GM Service Manual Online
For 1990-2009 cars only

Engine Control Module Scan Tool Information 3.6L Engine

Table 1: ECM Control Module Scan Tool Output Controls

The Engine Scan Tool Data List contains all engine related parameters that are available on the scan tool. The list is arranged in alphabetical order. A parameter may appear in any one of the data lists and in some cases may appear more than once or in more than one data list in order to group certain related parameters together.

Use the Engine Scan Tool Data List only after the following conditions are determined:

    •  The Diagnostic System Check - Vehicle is completed.
    •  There are no diagnostic trouble codes (DTCs).
    • The on-board diagnostics are functioning correctly.

Scan tool values from an engine that is operating correctly may be used for comparison with the engine you are diagnosing. The Engine Scan Tool Data List represents the values that would be seen on a normal operating engine.

Important: Do not use a scan tool that displays faulty data. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool may result in mis-diagnosis and unnecessary parts replacement.

Only the parameters listed below are referenced in this service information for use in diagnosis. If all values are within the typical range described below, refer to Symptoms - Engine Controls , for diagnosis.

ECM Control Module Scan Tool Data Parameters

Parameter

Operating Conditions

Expected Value

Definition

Ignition is ON, engine OFF, and vehicle is stationary

1-2 Shift Time

--

0.00 Sec

The scan tool will display the time taken to shift from 1st to 2nd gear.

1-2 Shift Time Error

--

0.00 Sec

 

1-2 TAP Cell 1

--

kPa

 

1-2 TAP Cell 2

--

kPa

 

1-2 TAP Cell 3

--

kPa

 

1-2 TAP Cell 4

--

kPa

 

1-2 TAP Cell 5

--

kPa

 

1-2 TAP Cell 6

--

kPa

 

1-2 TAP Cell 7

--

kPa

 

1-2 TAP Cell 8

--

kPa

 

1-2 TAP Cell 9

--

kPa

 

1-2 TAP Cell 10

--

kPa

 

1-2 TAP Cell 11

--

kPa

 

1-2 TAP Cell 12

--

kPa

 

1-2 TAP Cell 13

--

kPa

 

1-2 TAP Cell 14

--

kPa

 

1-2 TAP Cell 15

--

kPa

 

1-2 TAP Cell 16

--

kPa

 

1-2 TAP Cell 17

--

kPa

 

2-3 Shift Time

--

0.00 Sec

The scan tool will display the time taken to shift from 2nd to 3rd gear.

2-3 Shift Time Error

--

0.00 Sec

 

2-3 TAP Cell 1

--

kPa

 

2-3 TAP Cell 2

--

kPa

 

2-3 TAP Cell 3

--

kPa

 

2-3 TAP Cell 4

--

kPa

 

2-3 TAP Cell 5

--

kPa

 

2-3 TAP Cell 6

--

kPa

 

2-3 TAP Cell 7

--

kPa

 

2-3 TAP Cell 8

--

kPa

 

2-3 TAP Cell 9

--

kPa

 

2-3 TAP Cell 10

--

kPa

 

2-3 TAP Cell 11

--

kPa

 

2-3 TAP Cell 12

--

kPa

 

2-3 TAP Cell 13

--

kPa

 

2-3 TAP Cell 14

--

kPa

 

2-3 TAP Cell 15

--

kPa

 

2-3 TAP Cell 16

--

kPa

 

2-3 TAP Cell 17

--

kPa

 

3-2 Downshift Solenoid

--

On/Off

 

3-2 Downshift Solenoid Circuit

--

On/Off

 

3-4 Shift Time

--

0.00 Sec

The scan tool will display the time taken to shift from 3rd to 4th gear.

3-4 Shift Time Error

--

0.00 Sec

 

3-4 TAP Cell 1

--

kPa

 

3-4 TAP Cell 2

--

kPa

 

3-4 TAP Cell 3

--

kPa

 

3-4 TAP Cell 4

--

kPa

 

3-4 TAP Cell 5

--

kPa

 

3-4 TAP Cell 6

--

kPa

 

3-4 TAP Cell 7

--

kPa

 

3-4 TAP Cell 8

--

kPa

 

3-4 TAP Cell 9

--

kPa

 

3-4 TAP Cell 10

--

kPa

 

3-4 TAP Cell 11

--

kPa

 

3-4 TAP Cell 12

--

kPa

 

3-4 TAP Cell 13

--

kPa

 

3-4 TAP Cell 14

--

kPa

 

3-4 TAP Cell 15

--

kPa

 

3-4 TAP Cell 16

--

kPa

 

3-4 TAP Cell 17

--

kPa

 

5V Reference Voltage Circuit 1

Valid

This parameter displays the voltage sensed on the 5-volt reference 1 circuit at the engine control module.

Invalid

5V Reference Voltage Circuit 2

Valid

This parameter displays the voltage sensed on the 5-volt reference 2 circuit at the engine control module.

Invalid

5V Reference Voltage Circuit 3

Valid

This parameter displays the voltage sensed on the 5-volt reference 3 circuit at the engine control module.

Invalid

A/C Cutoff Mode (Air Conditioning)

Inactive

This parameter displays whether the engine control module is commanding the A/C compressor clutch relay off for max acceleration or pressure issues.

Pressure

Max. Acceleration

Active

A/C Disengagement 1st History

Present

The parameter displays the last 8 air conditioning (A/C) compressor disengages in order from 1 to 8 with 8 being the most recent. There are about 8 possible causes for the A/C compressor to disengage.

Not Present

A/C Disengagement 2nd History

Present

Not Present

A/C Disengagement 3rd History

Present

Not Present

A/C Disengagement 4th History

Present

Not Present

A/C Disengagement 5th History

Present

Not Present

A/C Disengagement 6th History

Present

Not Present

A/C Disengagement 7th History

Present

Not Present

A/C Disengagement 8th History

Present

Not Present

A/C Pressure Sensor

--

0 - 3,450 kPa

This parameter displays the pressure from the A/C high side pressure sensor signal circuit to the engine control module.

A/C Pressure Sensor

--

0 - 5 Volts

The scan tool displays 0-5 Volts. The scan tool displays approximately ?? Volts when the ignition is on.

A/C Request (Air Conditioning)

A/C button pressed

On

This parameter displays the state of the A/C request input to the engine control module from the heating, ventilation, and air conditioning (HVAC) controls.

A/C button depressed

Off

Actual Air/Flow Ratio

--

0.00 :1 Ratio

This parameter displays the ratio of air to fuel as calculated by the engine control module based on various sensor inputs. The scan tool will display a lower air fuel ratio when a richer air to fuel mixture is commanded. The scan tool will display a higher air fuel ratio when a leaner air to fuel mixture is commanded. In closed loop operation the air fuel ratio should normally be around 14.2-14.7 to 1.

Actual Gear

Gear selector in Park position

P/N

The scan tool will display the gear that is currently selected as determined by the engine control module form the information received from the TR switch.

Gear selector in Reverse position

R

Gear selector in Neutral position

P/N

Gear selector in Drive position

D

Actual Torque

--

0 - 100%

This parameter indicates the percentage of available torque requested from the engine to the transmission as calculated by the engine control module. The scan tool will display a higher value for higher torque, and a lower value for lower torque.

Alternator F Terminal

--

0 - 100%

This parameter displays the commanded state of the generator by the engine control module. A High value indicates a high charging command, and a low value indicates a low charging command.

Alternator L Terminal Circuit

--

Complete

This parameter displays if the engine control module is allowing the generator to operate. The scan tool displays Complete if the engine control module is allowing the generator to operate, or Incomplete if the engine control module is disabling the generator.

--

Incomplete

Alternator L Terminal Duty Cycle

--

0 - 100%

 

Ambient Temperature

--

°C

This parameter displays the ambient, outside, air temperature as calculated by the engine control module.

APP Sensor (Acceleration)

--

0 - 100%

This parameter displays the angle of the accelerator pedal position (APP) sensor 1 as calculated by the engine control module using the signal from the APP sensor 1. APP sensor 1 is a range of values indicating a low percentage when the accelerator pedal is not pressed to a high percentage when the accelerator pedal is fully pressed.

APP Sensor 1 (Acceleration)

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is on.

APP Sensor 1-2 (Acceleration)

--

Okay

The scan tool displays Fault if the engine control module detects the signal voltage from APP sensor 1 is not in correct relationship to APP sensor 2. The scan tool displays Okay under the normal operating conditions.

--

Fault

APP Sensor 2 (Acceleration)

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is on.

AT Input Speed (Automatic)

--

RPM

The scan tool displays the AT Input Speed in revolutions per minute.

AT Output Speed (Automatic)

--

RPM

The scan tool displays the AT Output Speed in revolutions per minute.

B1 Actual Exhaust Camshaft Position

--

° CA

This parameter displays the actual bank 1 exhaust camshaft position in degrees.

B1 Actual Intake Camshaft Position

--

° CA

This parameter displays the actual bank 1 intake camshaft position in degrees.

B1 Catalyst Temperature

--

°C

This parameter displays the B1 catalytic converter temperature as calculated by the engine control module.

B1 Commanded Exhaust Camshaft Position

--

0 - 100%

This parameter displays the exhaust camshaft position as a percentage of the range as commanded by the engine control module.

B1 Commanded Exhaust Camshaft Position

--

° CA

This parameter displays the actual exhaust camshaft position in degrees.

B1 Command Intake Camshaft Position

--

0 - 100%

This parameter displays the intake camshaft position in percent of range as commanded by the engine control module.

B1 Command Intake Camshaft Position

--

° CA

This parameter displays the actual intake camshaft position in degrees.

B1 Exhaust Camshaft Position Sensor Active Counter

--

Counts

 

B1 Exhaust Camshaft Position Solenoid Circuit Status

--

OK

This parameter displays the state of the exhaust camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Undefined

B1 Intake Camshaft Position Sensor

--

Counts

 

B1 Intake Camshaft Position Solenoid Valve Circuit Status

--

OK

This parameter displays the state of the intake camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Undefined

B1 LTFT Cruise/Acceleration

--

0 - 100%

The scan tool displays in %. This parameter is the long term fuel trim for this bank as calculated by the control module. The scan tool will display more than 0 percent indicating that time is being added to the injector pulse width, increasing the amount of fuel to this bank of the engine. The scan tool will display a value less than 0 indicating time is being subtracted from the injector pulse width, reducing the amount fuel to this bank of the engine. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.

B1 LTFT Idle/Deceleration

--

0 - 100%

The scan tool displays in %. This parameter is the long term fuel trim for this bank as calculated by the control module. The scan tool will display more than 0 percent indicating that time is being added to the injector pulse width, increasing the amount of fuel to this bank of the engine. The scan tool will display a value less than 0 indicating time is being subtracted from the injector pulse width, reducing the amount fuel to this bank of the engine. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.

B1 Short Term Fuel Trim

--

0 - 100%

The scan tool displays percentage. This parameter indicates the current short term fuel trim for this bank. The scan tool will display a value higher than 0 if the time is being added to the injector pulse width, increasing the amount of fuel to that bank of the engine to compensate for a lean condition sensed by the oxygen sensors on that bank. The scan tool will display a value lower than 0 if time is being subtracted from the injector pulse width, reducing the amount of fuel to the engine to compensate for a rich condition sensed by the oxygen sensors on that bank. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.

B1 Total Fuel Trim

--

0 - 100%

This parameter displays the total fuel trim from the long term idle/decel parameter and the long term fuel trim cell.

B1S1 o2 Sensor - Bank 1 Sensor 1

--

Ratio

 

B1S1 o2 Sensor - Bank 1 Sensor 1

--

0 - 100%

 

B1S2 o2 Sensor - Bank 1 Sensor 2

--

mV

This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor catalyst efficiency for cylinder bank 1. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.

B1S1 o2 Sensor Heater

--

Ohms

This parameter displays the resistance of the sensing element within the engine control module.

B1S1 o2 Sensor Heater

--

Active

This parameter displays the status of the o2 sensor heater. If the scan tool displays Active the o2 sensor heater has been activated.

--

Inactive

B1S1 o2 Sensor Heater Circuit Status

--

Okay

This parameter displays the state of the oxygen sensor heater control circuit. The parameter displays Fault if the oxygen sensor heater control circuit is open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Undefined

B1S2 o2 Sensor - Bank 1 Sensor 2

--

mV

This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor catalyst efficiency for cylinder bank 1. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.

B1S2 o2 Sensor Heater

--

Active

This parameter displays the status of the o2 sensor heater. If the scan tool displays Active the o2 sensor heater has been activated.

--

Inactive

B1S2 o2 Sensor Heater Circuit Status

--

Okay

This parameter displays the state of the oxygen sensor heater control circuit. The parameter displays Fault if the oxygen sensor heater control circuit is open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Incomplete

B2 Actual Exhaust Camshaft Position

--

° CA

This parameter displays the actual bank 2 exhaust camshaft position in degrees.

B2 Actual Intake Camshaft Position

--

° CA

This parameter displays the actual bank 2 intake camshaft position in degrees.

B2 Catalyst Temperature

--

°C

This parameter displays the B1 catalytic converter temperature as calculated by the engine control module.

B2 Commanded Exhaust Camshaft Position

--

0 - 100%

This parameter displays the exhaust camshaft position as a percentage of the range as commanded by the engine control module.

B2 Commanded Exhaust Camshaft Position

--

° CA

This parameter displays the actual exhaust camshaft position in degrees.

B2 Command Intake Camshaft Position

--

0 - 100%

This parameter displays the intake camshaft position in percent of range as commanded by the engine control module.

B2 Command Intake Camshaft Position

--

° CA

This parameter displays the actual intake camshaft position in degrees.

B2 Exhaust Camshaft Position Active Counter

--

Counts

 

B2 Exhaust Camshaft Position Solenoid Circuit Status

--

OK

This parameter displays the state of the exhaust camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Undefined

B2 Intake Camshaft Position Sensor

--

Counts

 

B2 Intake Camshaft Position Solenoid Circuit Status

--

OK

This parameter displays the state of the intake camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Undefined

B2 LTFT Cruise/Acceleration

--

0 - 100%

The scan tool displays in %. This parameter is the long term fuel trim for this bank as calculated by the engine control module. The scan tool will display of more than 0 percent indicating that time is being added to the injector pulse width, increasing the amount of fuel to this bank of the engine. The scan tool will display a value of less than 0 indicating time is being subtracted from the injector pulse width, reducing the amount fuel to this bank of the engine. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.

B2 LTFT Idle/Deceleration

--

0 - 100%

The scan tool displays in %. This parameter is the long term fuel trim for this bank as calculated by the engine control module. The scan tool will display more than 0 percent indicating that time is being added to the injector pulse width, increasing the amount of fuel to this bank of the engine. The scan tool will display a value less than 0 indicating time is being subtracted from the injector pulse width, reducing the amount fuel to this bank of the engine. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.

B2 Short Term Fuel Trim

--

0 - 100%

The scan tool displays percentage. This parameter indicates the current short term fuel trim for this bank. The scan tool will display a value higher than 0 if the time is being added to the injector pulse width, increasing the amount of fuel to that bank of the engine to compensate for a lean condition sensed by the oxygen sensors on that bank. The scan tool will display a value lower than 0 if time is being subtracted from the injector pulse width, reducing the amount of fuel to the engine to compensate for a rich condition sensed by the oxygen sensors on that bank. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.

B2 Total Fuel Trim

--

0 - 100%

This parameter displays the total fuel trim from the long term idle/decel parameter and the long term fuel trim cell.

B2S1 o2 Sensor - Bank 2 Sensor 1

--

Ratio

 

B2S1 o2 Sensor - Bank 2 Sensor 1

--

0 - 100%

 

B2S2 o2 Sensor - Bank 2 Sensor 2

--

mV

This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor catalyst efficiency for cylinder bank 2. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.

B2S1 o2 Sensor Heater - Bank 2 Sensor 1

--

Ohm

This parameter displays the resistance of the sensing element within the engine control module.

B2S1 o2 Sensor Heater - Bank 2 Sensor 1

--

Active

This parameter displays the status of the o2 sensor heater. If the scan tool displays Active the o2 sensor heater has been activated.

--

Inactive

B2S1 o2 Sensor Heater Circuit Status

--

Okay

This parameter displays the state of the intake camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Undefined

B2S2 o2 Sensor - Bank 2 Sensor 2

--

mV

This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor catalyst efficiency for cylinder bank 2. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.

B2S2 o2 Sensor Heater

--

Active

This parameter displays the status of the o2 sensor heater. If the scan tool displays Active the o2 sensor heater has been activated.

--

Inactive

B2S2 o2 Sensor Heater Circuit Status

--

Okay

This parameter displays the state of the intake camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Undefined

Barometer Pressure

--

kPa

This parameter displays the barometric pressure as calculated by the engine control module using the signal from the manifold absolute pressure (MAP) sensor measured when the ignition is turned on with the engine not running. The engine control module will update the barometric pressure during wide-open throttle (WOT) conditions. The scan tool will display a low value when the barometric pressure is low, and a high value when the barometric pressure is high.

Barometer Pressure

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.

Brake Lamp Switch

Brake pedal depressed

Active

This parameter displays the state of the brake pedal position switch as determined by the brake pedal switch. The scan tool will display Active when the brake pedal is depressed, and Inactive when the brake pedal is not depressed.

Brake pedal not depressed

Inactive

Calculated Air Flow

--

g/s

This parameter displays the air flow of the engine as calculated by the control module using information from the manifold absolute pressure (MAP) sensor. The scan tool will display a range of values indicating a high air flow when MAP pressure is high and a low air flow when MAP pressure is low. This value is listed in grams per second (g/s).

Calculated ECT - Closed

--

[ordm ]C

This parameter displays the modeled temperature that the engine control module calculates from air entering the engine, coolant temperature, and ambient air temperature. If the actual engine coolant temperature does not reach this calculated temperature within a predetermined amount of time, a DTC will set.

Calculated ECT - Thermostat

--

[ordm ]C

This parameter displays the modeled temperature that the engine control module calculates from air entering the engine, coolant temperature, and ambient air temperature. If the actual engine coolant temperature does not reach this calculated temperature within a predetermined amount of time, a DTC will set.

Calculated Pedal Position

--

0 - 100%

This parameter displays the angle of the accelerator pedal as calculated by the engine control module using the signals from the accelerator pedal position sensors. The APP indicated angle is a range of values indicating a low percentage when the accelerator pedal is not pressed to a high percentage when the accelerator pedal is fully pressed.

Calculated Throttle Position

--

0 - 100%

This parameter displays the angle of the throttle position (TP) sensor in percent. This information is calculated by the engine control module using the signal from the throttle position sensor. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

Camshaft Active Count

--

Counts

This parameter displays an incrementing counter when the engine control module receives a signal form the camshaft position (CMP) sensor.

CC Disengagement 1st History

--

On

The parameter displays the last 8 cruise control disengages in order from 1 to 8, with 8 being the most recent. There are about 33 possible causes for the cruise control to disengage.

--

Off

CC Disengagement 2nd History

--

On

--

Off

CC Disengagement 3rd History

--

On

--

Off

CC Disengagement 4th History

--

On

--

Off

CC Disengagement 5th History

--

On

--

Off

CC Disengagement 6th History

--

On

--

Off

CC Disengagement 7th History

--

On

--

Off

CC Disengagement 8th History

--

On

--

Off

Cold Start

--

Yes

This parameter indicates whether the engine meets the conditions for a cold start-up during the present ignition cycle. The scan tool displays Yes when the conditions for a cold start-up are met during this ignition cycle. The scan tool displays No when the conditions for a cold start-up are not met during the present ignition cycle. Conditions for a cold start-up require the coolant temperature and the intake air temperature to be below a predetermined temperature and within a certain range of each other. These conditions must occur after the engine was warmed up to a specific temperature during the previous ignition cycle.

--

No

Commanded B1S1 o2 Sensor Heated

--

0 - 100%

This parameter displays the commanded state of the bank 1 sensor 1 heater by the control module. The scan tool will display 100% when the heater command is at the maximum, and a 0% value if the heater command is off.

Commanded B1S1 o2 Sensor Valve

--

Ratio

 

Commanded B1S2 o2 Sensor Heated

--

0 - 100%

This parameter displays the commanded state of the bank 1 sensor 2 heater by the control module. The scan tool will display 100% when the heater command is at the maximum, and a 0% value if the heater command is off.

Commanded B1S2 o2 Sensor Valve

--

Ratio

 

Commanded B2S1 o2 Sensor Heated

--

0 - 100%

This parameter displays the commanded state of the bank 1 sensor 1 heater by the control module. The scan tool will display 100% when the heater command is at the maximum, and a 0% value if the heater command is off.

Commanded B2S2 o2 Sensor Heated

--

0 - 100 %

This parameter displays the commanded state of the bank 2 sensor 1 heater by the control module. The scan tool will display 100% when the heater command is at the maximum, and a 0% value if the heater command is off.

Commanded Gear

--

 

Coolant Temperature

--

[ordm ]C

This parameter displays the temperature of the engine coolant based on a voltage input from the engine coolant temperature (ECT) sensor to the engine control module. The scan tool will display a low value when the coolant temperature is low, and a high value when the coolant temperature is high.

Crank Request

--

Active

This parameter displays whether the ignition switch has been cycled to the crank position requesting the engine control module to activate the starter relay.

--

Inactive

Crankshaft Active Count

--

Counts

This parameter displays an incrementing counter when the engine control module receives a signal from the crankshaft position (CKP) sensor.

Crankshaft Resynchronis

--

Counts

This parameter displays the number of times the engine control module re-syncs with the crankshaft position (CKP) sensor.

Cruise Control

--

On

This parameter displays the status of the cruise control system as determined by the engine control module. The scan tool will display On when the cruise control system is in control of vehicle speed. The scan tool will display Off when the cruise control system is not operating.

--

Off

Cruise Control Active

--

Yes

This parameter displays the status of the cruise control system as determined by the engine control module. The scan tool will display Yes when the cruise control system is in control of vehicle speed. The scan tool will display No when the cruise control system is not operating.

--

No

Cruise Control Disengagement Reason

--

Off

This parameter displays the status of the cruise control disengagement reason.

--

Brake Applied

Cruise Control Switch

Cruise control switch activate

Active

This parameter displays the status of the cruise control switch.

Cruise control switch deactivated

Inactive

Cruise Resume/Acceleration Switch

Cruise resume/accel button pressed

Active

This parameter displays the status of the cruise resume/acceleration switch.

Cruise resume/accel button in idle position

Inactive

Cruise Set/Deceleration Switch

Cruise set/decel button pressed

Active

This parameter displays the status of the cruise set/deceleration switch.

Cruise set/decel button pressed

Inactive

Current TAP Cell

--

Counts

 

Cycles of Misfire

--

Number

This parameter displays the number of cylinder firing events that were recorded as misfires as determined by the control module.

Cylinder 1 Ignition Circuit Status

--

OK

This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. The parameter displays indeterminate until the control circuit has been commanded on.

--

Fault

--

Indeterminate

Cylinder 1 Injector Circuit Status

--

OK

This parameter displays the status of the output driver for the injector control circuit. The scan tool displays OK, Incomplete and Fault. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Incomplete

Cylinder 1 Knock Detected

--

Yes

This parameter displays the knock retard as commanded by the engine control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

--

No

Cylinder 2 Ignition Circuit Status

--

OK

This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. The parameter displays indeterminate until the control circuit has been commanded on.

--

Fault

--

Indeterminate

Cylinder 2 Injector Circuit Status

--

OK

This parameter displays the status of the output driver for the injector control circuit. The scan tool displays OK, Incomplete and Fault. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Indeterminate

Cylinder 2 Knock Detected

--

Yes

This parameter displays the knock retard as commanded by the engine control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

--

No

Cylinder 3 Ignition Circuit Status

--

OK

This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. The parameter displays indeterminate until the control circuit has been commanded on.

--

Fault

--

Indeterminate

Cylinder 3 Injector Circuit Status

--

OK

This parameter displays the status of the output driver for the injector control circuit. The scan tool displays OK, Incomplete and Fault. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Incomplete

Cylinder 3 Knock Detected

--

Yes

This parameter displays the knock retard as commanded by the engine control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

--

No

Cylinder 4 Ignition Circuit Status

--

OK

This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. The parameter displays indeterminate until the control circuit has been commanded on.

--

Fault

--

Indeterminate

Cylinder 4 Injector Circuit Status

--

OK

This parameter displays the status of the output driver for the injector control circuit. The scan tool displays OK, Incomplete and Fault. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Indeterminate

Cylinder 4 Knock Detected

--

Yes

This parameter displays the knock retard as commanded by the engine control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

--

No

Cylinder 5 Ignition Circuit Status

--

OK

This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. The parameter displays indeterminate until the control circuit has been commanded on.

--

Fault

--

Indeterminate

Cylinder 5 Injector Circuit Status

--

OK

This parameter displays the status of the output driver for the injector control circuit. The scan tool displays OK, Incomplete and Fault. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Incomplete

Cylinder 5 Knock Detected

--

Yes

This parameter displays the knock retard as commanded by the engine control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

--

No

Cylinder 6 Ignition Circuit Status

--

OK

This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. The parameter displays indeterminate until the control circuit has been commanded on.

--

Fault

--

Indeterminate

Cylinder 6 Injector Circuit Status

--

OK

This parameter displays the status of the output driver for the injector control circuit. The scan tool displays OK, Incomplete and Fault. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.

--

Fault

--

Incomplete

Cylinder 6 Knock Detected

--

Yes

This parameter displays the knock retard as commanded by the engine control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

--

No

Dec. Fuel Cutoff (Deceleration)

--

Active

This parameter displays the status of the operating mode of the engine control module used to turn off the fuel injectors and the evaporative emission (EVAP) canister purge valve during certain deceleration conditions.

--

Inactive

Desired Engine Idle Speed

--

744 RPM

This parameter displays the desired engine idle speed as commanded by the engine control module.

Desired Throttle Position

--

0 - 100 %

This parameter displays the angle of the throttle position (TP) in percent. This information is calculated by the engine control module using the signals from the throttle position sensors. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

Distance Since DTC Cleared

--

Km

This parameter displays the distance accumulated since an emission diagnostic trouble code was cleared. The scan tool will display increasing distance as the vehicle is driven.

DTC Set this Ignition

--

No DTC/(#) DTCs

The scan tool will display the number of DCT's set during this ignition cycle.

Electronic Throttle Control Learn

--

Counts

 

Engine Control Ignition Relay

--

On

This parameter displays the state of the control circuit engine control module power relay as commanded by the engine control module. The scan tool displays On with the engine running.

--

Off

Engine Control Ignition Relay Circuit Status

--

Complete

This parameter displays the status of the output driver for the EC Ignition Relay control circuit. The scan tool will display Complete, Incomplete. The scan tool will display Complete if the circuit is operating correctly. The scan tool will display Incomplete if there is an open, short to ground, or a short to voltage on the circuit.

--

Incomplete

Engine Control Ignition

--

Volts

The scan tool displays 0-13 Volts. The scan tool displays approximately 12 Volts when the ignition is on.

Engine Coolant Temperature

--

[ordm ]C

This parameter displays the temperature of the engine coolant based on a voltage input from the engine coolant temperature (ECT) sensor to the engine control module. The scan tool will display a low value when the coolant temperature is low, and a high value when the coolant temperature is high.

Engine Load

--

0 - 100 %

This parameter displays the calculated engine load in percent based on inputs to the engine control module from various engine sensors.

Engine Oil Level Low Indicator

--

On

The scan tool will display ON when the oil pressure is low which activates the Indicator light.

--

Off

Engine Oil Level Switch

Normal engine oil level

OK

This parameter displays if the level of the engine oil is within range as determined by the engine control module from information received from the engine oil level switch.

Low engine oil level

Low

Engine Oil Life Remaining

--

0 - 100%

This parameter displays the percent of engine oil life remaining. The controller calculates the engine oil life by monitoring engine load, coolant temperature, and engine speed.

Engine Oil Pressure

--

kPa

This parameter displays the engine oil pressure.

Engine Oil Pressure Sensor

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is on.

Engine Oil Pressure Sensor

--

OK

This parameter displays OK if the engine oil pressure is within the correct range. If the engine control module detects that the engine oil pressure is not within the correct range, the scan tool displays Low.

--

Low

Engine Oil Temperature

--

[ordm ]C

This parameter displays the temperature of the engine oil.

Engine Oil Temperature

--

[ordm ]C

This parameter displays the engine oil temperature as calculated by the engine control module

Engine Run Time

--

hh:mm:ss

This parameter displays the time elapsed since the engine was started. The scan tool will display the time in hours, minutes and seconds. The engine run time will reset to zero as soon as the engine stops running.

Engine Speed

--

RPM

This parameter displays the speed of the crankshaft as calculated by the engine control module based on inputs from the Crankshaft Position (CKP) Sensor. The scan tool will display the engine speed in revolutions per minute (RPM).

Engine Torque

--

Nm

 

Estimated Gear Ratio

--

0.00 : 1 Ratio

 

EVAP Purge Solenoid EVAP Emission

--

0 - 100%

This parameter displays the on-time or duty cycle of the EVAP canister purge solenoid commanded by the engine control module. Zero percent indicates no purge. One hundred percent indicates full purge.

EVAP Purge Solenoid Valve Circuit Status

--

OK

This parameter displays the state of the EVAP purge solenoid valve control circuit. The parameter displays Fault if the EVAP purge solenoid valve control circuit is short to voltage. This parameter may not change if the scan tool is used to command the EVAP purge solenoid valve on.

--

Fault

--

Undefined

Fan Relay 1

--

OK

This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is open, short to ground, or short to voltage. The parameter displays Indeterminate until the circuit has been commanded on.

--

Fault

--

Indeterminate

Fan 1 Relay Circuit Status

--

OK

This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit has an open, short to ground, or a short to voltage on the circuit

--

Fault

--

Undefined

Fan Relay 2 and 3

--

On

This parameter displays the engine control module commanded state of the fan relay control circuit.

--

Off

Fan 2 and 3 Relay Circuit Status

--

OK

This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is open, short to ground, or a short to voltage on the circuit

--

Fault

--

Undefined

Fuel Level

--

0 - 100%

This parameter displays the amount of fuel remaining in tall of the fuel tanks of the vehicle as a percentage. The engine control module calculates this level using the signals from the sensors used to monitor the fuel level in the fuel tanks. The scan tool will display a low reading when the total fuel level in the vehicle is low or near empty. The scan tool will display a high reading when the fuel level in the tank is high or near full.

Fuel Level

--

Litres

This parameter displays the amount of fuel remaining in all fuel tanks of the vehicle as measured in litres or gallons. The engine control module calculates the amount of fuel remaining in the tank by using information from the fuel level sensors.

Fuel Level Sensor 1

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is on.

Fuel Level Sensor 2

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is on.

Fuel Pump Relay

--

On

This parameter displays the commanded state of the fuel pump relay control circuit. The fuel pump relay should be On when the scan tool indicates the fuel pump relay command is On. The fuel pump relay should be Off when the scan tool indicates the fuel pump relay command is Off.

--

Off

Fuel Pump Relay Circuit Status

--

OK

This parameter displays the state of the fuel pump relay control circuit. The parameter displays Fault if the fuel pump relay control circuit is open, short to ground, or a short to voltage on tThe scan tool displays Closed Loop if the engine control module is controlling the fuel delivery according to the heated oxygen sensor (HO2S) voltages. The scan tool displays Open Loop if the engine control module is not adjusting for HO2S inputs. In Open Loop the engine control module bases fuel deliver on throttle position, engine coolant temperature, and mass airflow sensor inputs.he circuit

--

Fault

--

Undefined

Fuel System Status

--

Open Loop

The scan tool displays Open Loop or Closed Loop. The scan tool displays Closed Loop if the engine control module is controlling the fuel delivery according to the heated oxygen sensor (HO2S) voltages. The scan tool displays open loop if the engine control module is not adjusting for HO2S inputs. In open loop the engine control module bases fuel deliver on throttle position, engine coolant temperature, and mass airflow sensor inputs.

--

Closed Loop

Fuel Trim Learn

--

Enable

The scan tool displays Enabled or Disabled. When conditions are appropriate for enabling long term fuel trim corrections, the scan tool displays Enabled. If the scan tool displays Disabled, then long term fuel trim will not respond to changes in short term fuel trim.

--

Disable

Gear 1 TAP Cell

--

kPa

 

Gear 2 TAP Cell

--

kPa

 

Gear 3 TAP Cell

--

kPa

 

Ignition Accessory Signal

Ignition is in ACC position

On

This parameter displays the state of the ignition input to the engine control module from the ignition switch. The scan tool will display On when the ignition switch is in the ignition accessory position. The scan tool will display Off when the ignition switch is in any other position.

Ignition is in OFF/RUN/CRANK positions

Off

Ignition Time Off

--

hh:mm:ss

This parameter displays the time which the ignition has been switched off.

Ignition On Signal

--

On

 

--

Off

Ignition Voltage

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is on.

IMRC Solenoid (Intake Man)

--

On

This parameter displays the engine control modules commanded state of the IMRC solenoid.

--

Off

IMRC Solenoid Circuit Staus

--

OK

This parameter displays the state of the intake manifold runner control (IMRC) circuit. The parameter displays Fault if the IMRC circuit is open, short to ground, or short to voltage. The parameter displays Indeterminate until the circuit has been commanded on. This parameter may not change if the scan tool is used to command the IMRC solenoid on.

--

Fault

--

Indeterminate

IMRC Solenoid Feedback

--

0 - 100%

 

Injection Time Cylinder 1

--

milliseconds

This parameter displays the amount of fuel injector ON time or pulse width as commanded by the engine control module.

Injection Time Cylinder 2

--

milliseconds

Injection Time Cylinder 3

--

milliseconds

Injection Time Cylinder 4

--

milliseconds

Injection Time Cylinder 5

--

milliseconds

Injection Time Cylinder 6

--

milliseconds

Injector 1 Disabled Due to Misfire

--

Yes

This parameter displays the status of the fuel injector driver by the control module. The scan tool will display Yes if the fuel injector is being disabled due to a misfires detection. The scan tool will display No if the fuel injector is not being disabled by the control module due to a misfire.

--

No

Injector 2 Disabled Due to Misfire

--

Yes

--

No

Injector 3 Disabled Due to Misfire

--

Yes

--

No

Injector 4 Disabled Due to Misfire

--

Yes

--

No

Injector 5 Disabled Due to Misfire

--

Yes

--

No

Injector 6 Disabled Due to Misfire

--

Yes

--

No

Intake Air Temp

--

[ordm ]C

This parameter displays the temperature of the intake air calculated by the engine control module based on the input from the intake air temperature (IAT). The scan tool will display a low value for a low intake air temperature, and a high value for a high intake air temperature.

Knock Retard

--

[ordm ] CA

The scan tool displays in ° CA. This parameter indicates the amount of timing retard commanded by the engine control module. The scan tool will display a lower value if no knock is detected, and a higher value as more knock is detected and the control module retards the ignition timing.

Knock Retard Cylinder 1

--

[ordm ] CA

This parameter indicates the amount of timing retard commanded by the engine control module. The scan tool will display a lower value if no knock is detected, and a higher value as more knock is detected and the engine control module retards the ignition timing.

Knock Retard Cylinder 2

--

[ordm ] CA

Knock Retard Cylinder 3

--

[ordm ] CA

Knock Retard Cylinder 4

--

[ordm ] CA

Knock Retard Cylinder 5

--

[ordm ] CA

Knock Retard Cylinder 6

--

[ordm ] CA

Knock Sensor Circuit 1 Test Status

--

Complete

This parameter displays the knock sensor 1 test status. The scan tool displays Complete if the knock sensor 1 test is completed and operating normally.

--

Incomplete

Knock Sensor Circuit 2 Test Status

--

Complete

This parameter displays the knock sensor 2 test status. The scan tool displays Complete if the knock sensor 2 test is completed and operating normally.

--

Incomplete

Knock Sensor Circuit Test Status

--

Complete

This parameter displays the knock sensor circuit test status. The parameter displays Complete if the knock sensor circuit test is completed and operating normally.

--

Incomplete

Latest Shift

--

0.00 Seconds

 

Loop Status Bank 1 or 2 Sensor 1

--

Open Loop

This parameter displays the state of the fuel control system as commanded by the engine control module. Closed Loop operation indicates that the engine control module is controlling the fuel delivery based off the oxygen sensors input signal. In Open Loop operation the engine control module ignores the oxygen sensor input signal and bases the amount of fuel to be delivered on other sensor inputs.

--

Closed Loop

Loop Status Bank 1 or 2 Sensor 2

--

Open Loop

This parameter displays the state of the rear heated oxygen sensors as commanded by the engine control module. The rear sensors will not go into Closed Loop until the engine control module (ECM) determines that the HO2S is ready for operation.

--

Closed Loop

Malfunction Indicator

--

On

This parameter displays the commanded state of the malfunction indicator lamp (MIL) control circuit by the engine control module.

--

Off

Mass Air Flow

--

g/s

The scan tool displays g/s. This parameter indicates the airflow into the engine as calculated by the engine control module based on mass airflow (MAF) sensor inputs. The scan tool will display a high value at higher engine speeds, and a low value at idle.

Mass Air Flow Sensor

--

Hz

The scan tool displays in Hz. This parameter indicates the frequency signal sent from the MAF sensor to the engine control module. the scan tool will display a high value indicates a higher engine speed. The scan tool will display a low value at idle.

Misfire Current Cylinder 1

--

(#)

The scan tool will display in counts. This parameter indicates the number of cylinder firing events detected as possible misfires on each cylinder during the last 200 crankshaft revolutions as calculated by the engine control module. The scan tool will display a low number for a low number of cylinder misfire events. The scan tool will display a high number for a high number of cylinder misfire events.

Misfire Current Cylinder 2

--

(#)

Misfire Current Cylinder 3

--

(#)

Misfire Current Cylinder 4

--

(#)

Misfire Current Cylinder 5

--

(#)

Misfire Current Cylinder 6

--

(#)

Misfire History Cylinder 1

--

(#)

The scan tool displays in counts. This parameter displays the total level of cylinder misfires that have been calculated for each cylinder by the engine control module. This parameter will not update or show activity until a misfire DTC has become active. The misfire history counters will update every 200 cylinder firing events.

Misfire History Cylinder 2

--

(#)

Misfire History Cylinder 3

--

(#)

Misfire History Cylinder 4

--

(#)

Misfire History Cylinder 5

--

(#)

Misfire History Cylinder 6

--

(#)

Oil Level

--

Normal

his parameter displays if the level of the engine oil is within range as determined by the engine control module from information received from the engine oil level switch.

--

Low

PCS Actual Current

--

0 mA

 

PCS Desired Current

--

0 mA

 

PCS Duty Cycle

--

0 - 100%

 

Power Enrichment

--

Yes

Scan tool displays Yes or No. Yes displayed indicates that the engine control module has detected conditions appropriate to operate in power enrichment mode. The engine control module commands power enrichment mode when a large increase in throttle position and load is detected. While in power enrichment, the engine control module will increase the amount of fuel delivered by entering open loop and increasing the injector pulse width.

--

No

Powertrain Immobiliser

--

Standby

This parameter displays the current status of the powertrain immobiliser as Active, Inactive or Standby

--

Active

--

Inactive

Reduced Engine Power

--

Active

The scan tool displays Active or Inactive. The scan tool displays Active when the engine control module receives a signal from the throttle actuator control (TAC) module that a TAC system fault is occurring. The scan tool displays inactive when the engine is operating normally.

--

Inactive

Requested Torque

--

0 - 100%

This parameter displays the calculated amount torque requested of the controller.

Reverse Gear TAP Cell

--

kPa

 

RVC Override Command

--

 

Shift Pattern

--

Normal/

 

Shift Solenoid A

--

On

 

--

Off

Shift Solenoid A Circuit

--

 

Shift Solenoid B

--

On

 

--

Off

Spark Advance

--

[ordm ] CA

This parameter displays the amount of spark advance the engine control module is commanding on the ignition control circuits. The engine control module determines the desired advance.

Speed Ratio

--

0.00 : 1

 

Starter Relay

--

On

This parameter displays the control modules commanded state of the starter motor relay control circuit.

--

Off

Starter Relay Circuit Status

--

OK

This parameter displays the state of the starter relay control circuit. The parameter displays Fault if the starter relay control circuit is open, short to ground, short to voltage on the circuit.

--

Fault

--

Undefined

Start-Up ECT

--

[ordm ]C

This parameter indicates the engine coolant temperature at start-up, as calculated by the engine control module based on the input from the engine coolant temperature sensor. The scan tool will display a higher value at higher engine start-up temperatures, and a lower value at lower start-up temperatures.

Start-Up IAT

--

[ordm ]C

Indicates the intake air temperature (IAT) at the time that the vehicle was started. Used to determine if the last start-up was a cold start. The scan tool range is -39 to +140°C (-38 to +284°F). This parameter indicates the ambient air temperature at start-up.

System Power Mode

Ignition is in OFF position

Off

This parameter displays Off/Accessory/Run/Crank. This is the status of the system power mode dependent on the ignition position.

Ignition is in ACC position

Accessory

Ignition is in RUN position

Run

Ignition is in CRANK position

Crank

TAC Motor PWM Command

--

0 - 100%

This parameter indicates the commanded state of the TCC PWM Solenoid by the engine control module. The scan tool displays a high percentage value when the TAC Motor PWM is commanded on.

TCC 1 TAP Cell

--

kPa

 

TCC 2 TAP Cell

--

kPa

 

TCC 3 TAP Cell

--

kPa

 

TCC Duty Cycle Circuit

--

 

TCC PWM Solenoid

--

0 - 100%

This parameter indicates the commanded state of the TCC PWM Solenoid by the engine control module. The scan tool displays ON or OFF. The scan tool displays ON when the commanded state of the solenoid is ON. The scan tool displays OFF when the solenoid is OFF.

TCC Slip Speed

--

RPM

 

TCC Solenoid

--

On

This parameter displays the commanded status of the TCC.

--

Off

TFP Gear

--

Park/Neutral

 

TFP Switch A (Transmission Fluid)

--

Closed - Volts

Open 12V

--

Open - Volts

TFP Switch B (Transmission Fluid)

Closed - Volts

Closed 12V

--

Open - Volts

TFP Switch C (Transmission Fluid)

--

Closed - Volts

Open 12V

--

Open - Volts

Throttle Position

--

0 - 100%

This parameter displays the percent of throttle opening as calculated by the engine control module using information from the two TP sensors.

Time Since Engine Off

--

hh:mm:ss

 

Torque Converter Efficiency

--

0.00 : 1

 

Total Knock Retard

--

[ordm ] CA

This parameter indicates how much ignition spark timing is being retarded due to all control systems monitored by the engine control module. The scan tool will display a high value during extreme conditions such as high temperatures and antilock braking. The scan tool will display a lower value during lighter driving conditions.

Total Misfire

--

(#)

The scan tool range is 0-255 counts. This parameter indicates the total level of misfire that has been detected on each cylinder. The misfire history counters will not update or show any activity until a misfire or DTC P0300 has become active. The misfire history counter will update every 200 cylinder firing events.

TP Sensor 1 (Throttle Position)

--

0 - 100%

This parameter displays the angle of the throttle position (TP) sensor 1 in percent. This information is calculated by the engine control module using the signal from the throttle position sensor 1. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

TP Sensor 1 (Throttle Position)

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is on.

TP Sensor 1 Learned Lower

--

Volts

This parameter displays the learned minimum value of TP sensor 1 as recorded by the engine control module during the last learn procedure.

TP Sensor 1-2 Correlation

--

OK

This parameter displays the results of a engine control module test that compares signals from the throttle position (TP) sensors 1 and 2 . The scan tool will display Agree when the signal from TP sensor 1 corresponds with the signal from TP sensor 2. The scan tool will display Disagree when the signal from TP sensor 1 conflicts with the signal from TP sensor 2.

--

Fault

TP Sensor 2 (Throttle Position)

--

0 - 100%

This parameter displays the angle of the throttle position (TP) sensor 2 in percent. This information is calculated by the engine control module using the signal from the throttle position sensor 2. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

TP Sensor 2 (Throttle Position)

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is on.

TP Sensor 2 Learned Lower

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is on.

TR Switch A

--

Closed - Volts

Open 12V

--

Open - Volts

TR Switch B

--

Closed - Volts

Open 12V

--

Open - Volts

TR Switch C

--

Closed - Volts

Closed 12V

--

Open - Volts

TR Switch P

--

Closed - Volts

Closed 12V

--

Open - Volts

Traction Control

--

Active

This parameter displays Active if the EBTCM is commanding traction control.

--

Inactive

Transmission Fluid Temperature

--

[ordm ]C

 

Transmission Gear

Gear selector in Park position

P/N

This parameter indicates the current state of the gear select switch on the transmission/transaxle as calculated by the engine control module based on the TR switch.

Gear selector in Reverse position

R

Gear selector in Neutral position

P/N

Gear selector in Drive position

D

Transmission Hot Mode

--

On

 

--

Off

Transmission Range (TR)

--

 

Vehicle Speed Circuit Status

--

OK

This parameter displays the status of the Vehicle Speed Circuit. The scan tool will display Fault if the vehicle speed circuit is open, short to ground or short to voltage. This parameter displays Incomplete until the circuit has been commanded on. The scan tool will display OK if the circuit is operating correctly.

--

Fault

--

Incomplete

Vehicle Speed Sensor

--

Km/h

This parameter indicates the vehicle speed calculated by the engine control module based on an input from the vehicle speed sensor (VSS). the scan tool will display a high value at higher vehicle speeds, and a low value at lower vehicle speeds.

Volumetric Efficiency

--

5 - 25%

This parameter displays the calculated volumetric efficiency of the engine as calculated by the engine control module.

ECM Control Module Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

Camshaft Actuator

Special Functions/Engine Output Controls/CMP Actuator System

This function controls the selected camshaft actuator. The normal commanded state is NONE. The system will increase or decrease the angle of the selected camshaft in 5 degree increments up to 40 crankshaft degrees. The scan tool initiates the test when the following conditions are met:

    • The vehicle speed is 0 km/h (0 mph).
    • The transmission is in park or neutral.
    • The engine speed is between 1,000-1,400 RPM.

The system remains in the commanded state until cancelled by the scan tool.

Camshaft Actuator Solenoid

Special Functions/Engine Output Controls/CMP Actuator System

This function controls the selected camshaft actuator solenoid. The normal commanded state is NONE. When commanded ON/OFF, the ECM turns the camshaft actuator solenoid ON/OFF. The scan tool initiates the test when the following conditions are met:

    • The ignition is ON with the engine OFF.
    • No engine speed is detected.

The system remains in the commanded state until cancelled by the scan tool.

Cylinder Power Balance

Special Functions/Fuel System

Important: The Misfire Current and Misfire History parameters may not increment when using this function.

This function disables the selected fuel injector. The normal commanded state is None. The scan tool initiates the test when the following conditions are met:

    • The engine is operating and the engine idle is stable.
    • The vehicle speed is 0 km/h (0 mph).
    • There are no DTCs set for the vehicle speed sensor.

If the fuel injector was disabled for 30 seconds, fuel injector control is not allowed again on the same fuel injector for 60 seconds.

Engine Speed Control

Special Functions/TAC System

This function controls the idle speed override in 25 RPM, 100 RPM, and 500 RPM increments, from the base idle speed to 1,400 RPM. The scan tool initiates the test when the following conditions are met:

    • The transmission is in park or neutral.
    • The engine speed is less than 1,000 RPM.

The engine speed will remain in the commanded state until cancelled by the scan tool.

EVAP Purge Solenoid

Special Functions/Engine Output Controls/EVAP System

Important: The EVAP Purge Solenoid Command parameter may not change states when using this output control.

This function controls the EVAP purge solenoid valve. The normal commanded state is NONE. The system will increase or decrease the amount of purge by changing the duty cycle of the purge valve in 10 percent increments within a range of 0-100 percent. The system remains in the commanded state until cancelled by the scan tool or the fuel tank pressure (FTP) sensor exceeds -24 mm Hg (-12 inch H20).

EVAP Purge/Seal

Special Functions/Engine Output Controls/EVAP System

Important: The EVAP Purge and Vent Solenoid Command parameters may not change states when using this output control.

This function activates both the EVAP purge solenoid valve and EVAP vent solenoid to seal the EVAP system. When activated, the purge valve is commanded to 0 percent and the vent valve is commanded ON, Not-venting. The normal commanded state for both solenoids is None. Both of the solenoids remain in the commanded state until cancelled by the scan tool or the FTP sensor exceeds -24 mm Hg (-12 inch H20).

EVAP Test

Service Bay Test

This function activates the Service Bay Test to verify the integrity of the EVAP system. The scan tool initiates the test when the following conditions are met:

    • All instructions on the scan tool have been completed.
    •  ECT is less than a specified value.
    • No EVAP DTCs are set.

EVAP Vent Solenoid

Special Functions/Engine Output Controls/EVAP System

Important: The EVAP Vent Solenoid Command parameter may not change states when using this output control.

This function controls the EVAP vent solenoid. The normal commanded state is NONE. When commanded ON, the vent valve switches to Not-venting. The system remains in the commanded state unless one of the following conditions occur:

    • Cancelled by the scan tool
    • The EVAP canister purge solenoid is more than 0 percent, and the FTP sensor exceeds -24  mm Hg (-12 inch H20).

Fuel Injector Balance

Special Functions/Fuel System

This function enables the fuel injector in order to verify the correct fuel injector flow. The ECM will pulse the selected fuel injector when the following conditions are met:

    • All instruction on the scan tool is complete.
    • A fuel injector is selected.
    • The ignition is ON with the engine OFF.

The selected fuel injector can only be flowed/pulsed once per ignition cycle.

Fuel Pump

Special Functions/Engine Output Controls

This function controls the fuel pump relay. The normal commanded state is NONE. The scan tool initiates the test when the following conditions are met:

    • There are no vehicle speed sensor DTCs set.
    • The vehicle speed is 0 km/h (0 mph).

When commanded ON/OFF, the engine Control Module (ECM) turns the fuel pump relay ON/OFF. If the engine is running and the fuel pump relay is commanded OFF, the engine will stall. The system remains in the commanded state for about 2 seconds or until cancelled by the scan tool or the ECM detects a vehicle speed.

Fuel Trim Reset

Special Functions/Fuel System

This function resets the fuel trim data and the learned values for the rear heated oxygen sensors.

Idle Learn Reset

Special Functions/TAC System

This function allows the throttle position and the idle speed to be relearned by the ECM, once the following conditions have been met.

    • The ignition is ON with the engine OFF.
    • The engine coolant temperature (ECT) is between 5-85°C (41-185°F).
    • No TAC system DTCs are set.

IMRC Solenoid

Special Functions/Engine Output Controls

This function controls the intake manifold runner control (IMRC) solenoid. The normal commanded state is NONE. When commanded ON/OFF, the ECM turns the IMRC solenoid ON/OFF. The scan tool initiates the test when the following conditions are met:

    • There are no vehicle speed sensor DTCs set.
    • The vehicle speed is 0 km/h (0 mph).

The system remains in the commanded state until cancelled by the scan tool.

Loop Status

Special Functions/Engine Output Controls

This function controls the heated oxygen sensor (HO2S) loop status. The commanded states include NONE, OPEN, and CLOSED. The normal commanded state is NONE. The loop status changes as commanded, OPEN or CLOSED.

The system remains in the commanded state until cancelled by the scan tool.

Malfunction Indicator Lamp

Special Functions/Engine Output Controls

This function controls the malfunction indicator lamp (MIL). The normal commanded state is NONE. When commanded ON/OFF, the ECM turns the MIL ON/OFF. The system remains in the commanded state until cancelled by the scan tool.

Throttle Position

Special Functions/TAC System

This function controls the throttle valve in 10 percent increments. The scan tool initiates the test when the following conditions are met:

    • There are no vehicle speed sensor DTCs set.
    • The vehicle speed is 0 km/h (0 mph).
    • The ignition is ON, with the engine OFF.
    • The ECM is not commanding a throttle learn.

The system remains in the commanded state until cancelled by the scan tool.

Engine Control Module Scan Tool Information 6.0L Engine

Table 1: Engine Control Module Scan Tool Output Controls

The Engine Scan Tool Data List contains all engine related parameters that are available on the scan tool. The list is arranged in alphabetical order. A parameter may appear in any one of the data lists and in some cases may appear more than once or in more than one data list in order to group certain related parameters together.

Use the Engine Scan Tool Data List only after the following conditions are determined:

    •  The Diagnostic System Check - Vehicle is completed.
    •  There are no diagnostic trouble codes (DTCs).
    • The on-board diagnostics are functioning correctly.

Scan tool values from an engine that is operating correctly may be used for comparison with the engine you are diagnosing. The Engine Scan Tool Data List represents the values that would be seen on a normal operating engine.

Important: Do not use a scan tool that displays faulty data. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool may result in mis-diagnosis and unnecessary parts replacement.

Only the parameters listed below are referenced in this service information for use in diagnosis. If all values are within the typical range described below, refer to Symptoms - Engine Controls ..

Engine Control Module Scan Tool Data Parameters

Scan Tool Parameter

Data List

Parameter Range/Units

Typical Data Values

Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off

5V Reference Voltage Circuit 1

Valid

This parameter displays the voltage sensed on the 5-volt reference 1 circuit at the control module.

Invalid

5V Reference Voltage Circuit 2

Valid

This parameter displays the voltage sensed on the 5-volt reference 2 circuit at the control module.

Invalid

A/C Cutoff Mode (Air Conditioning)

Inactive

 

Pressure

Max. Acceleration

Active

A/C Disengagement 1st History

Present

The parameter displays the last 8 air conditioning (A/C) compressor disengages in order from 1 to 8 with 8 being the most recent. There are about 8 possible causes for the A/C compressor to disengage.

Not Present

A/C Disengagement 1st History

Present

Not Present

A/C Disengagement 2nd History

Present

Not Present

A/C Disengagement 3rd History

Present

Not Present

A/C Disengagement 4th History

Present

Not Present

A/C Disengagement 5th History

Present

Not Present

A/C Disengagement 6th History

Present

Not Present

A/C Disengagement 7th History

Present

Not Present

A/C Disengagement 8th History

Present

Not Present

A/C Pressure Sensor

--

0 - 3,450 kPa

This parameter displays the pressure from the A/C high side pressure sensor signal circuit to the control module.

A/C Pressure Sensor

--

0 - 5 Volts

The scan tool displays 0-5 Volts. The scan tool displays approximately ?? Volts when the ignition is ON.

Accelerator Pedal Position Sensor 1-2 Correlation

--

Okay

This parameter displays Disagree if the control module detects the signal voltage from APP sensor 1 is not in correct relationship to APP sensor 2. The scan tool displays Agree under the normal operating conditions.

--

Not Okay

A/C Request (Air Conditioning)

Not Present

This parameter displays the state of the air conditioning (A/C) request input to the control module from the heating, ventilation, and air conditioning (HVAC) controls. The scan tool will display Not Present indicates the control module is not receiving a request from the HVAC system to ground the A/C clutch relay control circuit.

Actual Torque

--

0 - 100 %

This parameter displays the engine load in percent based on inputs to the control module from various engine sensors. The scan tool will display a low percentage when the engine is at idle with little or no load. The scan tool will display a high percentage when the engine is running at a high RPM under a heavy load

Alternator F Terminal

0 - 100 %

This parameter displays the commanded state of the generator by the control module. A High value indicates a high charging command, and a low value indicates a low charging command.

Alternator L Terminal Circuit

--

On/Off

This parameter displays if the control module is allowing the generator to operate. The scan tool displays ON if the generator is allowed to operate. The scan tool displays OFF if the control module is disabling the generator.

Alternator L Terminal Duty Cycle

--

 

Amibent Temperature

--

° C

This parameter displays the ambient, outside, air temperature as calculated by the control module.

APP Sensor (Acceleration)

--

0 - 100 %

This parameter displays the position of the Accelerator Pedal as calculated by the Accelerator Pedal Position Sensor.

APP Sensor 1 (Accelerator Pedal Position)

--

%

This parameter displays the voltage signal sent to the control module from accelerator pedal position (APP) sensor 1 of the APP sensor assembly. APP sensor 1 is a range of values indicating a low voltage when the accelerator pedal is not pressed to a high voltage when the accelerator pedal is fully pressed.

APP Sensor 1 (Accelerator Pedal Position)

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.

APP Sensor 1 (Accelerator Pedal Position)

--

%

This parameter displays the angle of the accelerator pedal position (APP) sensor 1 as calculated by the control module using the signal from the APP sensor 1. APP sensor 1 is a range of values indicating a low percentage when the accelerator pedal is not pressed to a high percentage when the accelerator pedal is fully pressed.

APP Sensor 2 (Accelerator Pedal Position)

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.

APP Sensor 2 (Accelerator Pedal Position)

--

%

This parameter displays the angle of the accelerator pedal position (APP) sensor 1 as calculated by the control module using the signal from the APP sensor 1. APP sensor 1 is a range of values indicating a low percentage when the accelerator pedal is not pressed to a high percentage when the accelerator pedal is fully pressed.

Auto Learn Counter

Counts

 

Auto Learn Timer

h:m:s

 

B1 Average Injection Time (Bank 1)

ms

 

B1 Catalyst Temperature

--

° C

This parameter displays the B1 catalytic converter temperature as calculated by the control module.

B1 LTFT Cruise/Acceleration (Bank 1 Long Term Fuel Trim)

%

The scan tool displays in %. This parameter is the long term fuel trim for this bank as calculated by the control module. The scan tool will display of more than 0 percent indicating that time is being added to the injector pulse width, increasing the amount of fuel to this bank of the engine. The scan tool will display a value of less than 0 indicating time is being subtracted from the injector pulse width, reducing the amount fuel to this bank of the engine. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.

B1S1 O2 Sensor (Bank 1 Sensor 1)

--

mV

This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor fuel trim for cylinder bank 1. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.

B1S1 O2 Sensor Heater (Bank 1 Sensor 1)

--

On/Off

This parameter displays the commanded state of the bank 1 sensor 1 heater by the control module. The scan tool will display ON when the heater is commanded ON. The scan tool will display OFF when the heater is commanded OFF.

B1S1 O2 Sensor Heater Circuit Status (Bank 1 Sensor 1)

--

Passed_Failed_Incomplete

This parameter displays the commanded state of the bank 1 sensor 1 heater by the control module. The scan tool will display ON when the heater is commanded ON. The scan tool will display OFF when the heater is commanded OFF.

B1S2 O2 Sensor (Bank 1 Sensor 2)

mV

This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor catalyst efficiency for cylinder bank 1. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.

B1S2 O2 Sensor Heater (Bank 1 Sensor 2)

On/Off

This parameter displays the commanded state of the bank 1 sensor 2 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.

B1S2 O2 Sensor Heater Circuit Status (Bank 1 Sensor 2)

Passed_Failed_Incomplete

This parameter displays the commanded state of the bank 1 sensor 2 heater by the control module. The scan tool will display ON when the heater is commanded ON. The scan tool will display OFF when the heater is commanded OFF.

B2 Average Injection Time (Bank 2)

ms

 

B2 Catalyst Temperature (Bank 2)

--

° CA

This parameter displays the B1 catalytic converter temperature as calculated by the control module.

B2 LTFT Cruise/Acceleration (Bank 2 Long Term Fuel Trim)

--

0 - 100 %

The scan tool displays in %. This parameter is the long term fuel trim for this bank as calculated by the control module. The scan tool will display of more than 0 percent indicating that time is being added to the injector pulse width, increasing the amount of fuel to this bank of the engine. The scan tool will display a value of less than 0 indicating time is being subtracted from the injector pulse width, reducing the amount fuel to this bank of the engine. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.

B2 Short Term Fuel Trim (Bank 2)

--

0 - 100 %

 

B2S1 O2 Sensor (Bank 2 Sensor 1)

--

mV

This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor fuel trim for cylinder bank 2. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.

B2S1 O2 Sensor Heater (Bank 2 Sensor 1)

--

On/Off

This parameter displays the commanded state of the bank 2 sensor 1 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.

B2S1 O2 Sensor Heater Circuit Status (Bank 2 Sensor 1)

--

Passed_Failed_Incomplete

This parameter displays the commanded state of the bank 2 sensor 1 heater by the control module. The scan tool will display ON when the heater is commanded ON. The scan tool will display OFF when the heater is commanded OFF.

B2S2 O2 Sensor (Bank 2 Sensor 2)

mV

This parameter displays the voltage from the signal produced by the heated oxygen sensor used to catalyst efficiency for cylinder bank 2. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.

B2S2 O2 Sensor Heater (Bank 2 Sensor 2)

On/Off

his parameter displays the commanded state of the bank 2 sensor 2 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.

B2S2 O2 Sensor Heater (Bank 2 Sensor 2)

mA

 

B2S2 O2 Sensor Heater Circuit Status (Bank 2 Sensor 2)

Passed_Failed_Incomplete

This parameter displays the commanded state of the bank 2 sensor 2 heater by the control module. The scan tool will display ON when the heater is commanded ON. The scan tool will display OFF when the heater is commanded OFF.

Barometer Pressure

--

kPa

This parameter displays the barometric pressure as calculated by the control module using the signal from the manifold absolute pressure (MAP) sensor measured when the ignition is turned on with the engine not running. The control module will update the barometric pressure during wide-open throttle (WOT) conditions. The scan tool will display a low value when the barometric pressure is low, and a high value when the barometric pressure is high.

Brake Lamp Switch

--

Active/Inactive

This parameter displays the state of the brake pedal as determined by the control module based on an input from the stop lamp pedal switch. This switch turns on the stop lamps when the brake pedal is depressed. The scan tool will display Active when the brake pedal is depressed.

Calculated Air Flow

--

g/s

 

Calculated APP Sensor 1 (Accelerator Pedal Position)

--

0 - 100 %

This parameter displays the angle of the throttle position (TP) sensor 1 in percent. This information is calculated by the control module using the signal from the throttle position sensor 1. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

Calculated APP Sensor 2 (Accelerator Pedal Position)

--

0 - 100 %

This parameter displays the angle of the throttle position (TP) sensor 2 in percent. This information is calculated by the control module using the signal from the throttle position sensor 2. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

Calculated Pedal Position

--

0 - 100 %

This parameter displays the angle of the accelerator pedal as calculated by the control module using the signals from the accelerator pedal position sensors. The APP indicated angle is a range of values indicating a low percentage when the accelerator pedal is not pressed to a high percentage when the accelerator pedal is fully pressed.

Calculated Throttle Position

--

0 - 100 %

This parameter displays the angle of the throttle position (TP) sensor in percent. This information is calculated by the control module using the signal from the throttle position sensor. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

Camshaft Active Counter

--

Counts

This parameter displays an incrementing counter when the control module receives a signal form the camshaft position (CMP) sensor.

Camshaft Sensor Engine Speed

--

RPM

This parameter displays the speed of the engine as calculated by the signal from the camshaft position (CMP) sensor.

Catalyst Protection Mode

--

No_Yes

This parameter displays if the control module is commanding catalytic converter protection.

CC Disengagement 1st History

--

On/Off

The parameter displays the last 8 cruise control disengages in order from 1 to 8, with 8 being the most recent. There are about 33 possible causes for the cruise control to disengage.

CC Disengagement 2nd History

--

On/Off

CC Disengagement 3rd History

--

On/Off

CC Disengagement 4th History

--

On/Off

CC Disengagement 5th History

--

On/Off

CC Disengagement 6th History

--

On/Off

CC Disengagement 7th History

--

On/Off

CC Disengagement 8th History

--

On/Off

Clutch Pedal Start Switch

--

Inactive_Active

This parameter displays the state of the clutch pedal as determined by the control module from the clutch start switch.

Clutch Pedal Switch

--

Inactive_Active

This parameter displays the current state of the clutch pedal as determined by the control module.

Cold Start Up

--

Yes/No

This parameter indicates whether the engine meets the conditions for a cold start-up during the present ignition cycle. The scan tool displays Yes when the conditions for a cold start-up are met during this ignition cycle. The scan tool displays No when the conditions for a cold start-up are not met during the present ignition cycle. Conditions for a cold start-up require the coolant temperature and the intake air temperature to be below a predetermined temperature and within a certain range of each other. These conditions must occur after the engine was warmed up to a specific temperature during the previous ignition cycle.

Commanded Air/Fuel Equivalence Ratio

--

0.0:1

This parameter displays the ratio of air to fuel as calculated by the control module based on various sensor inputs. The scan tool will display a lower air fuel ratio when a richer air to fuel mixture is commanded. The scan tool will display a higher air fuel ratio when a leaner air to fuel mixture is commanded. In closed loop operation the air fuel ratio should normally be around 14.2-14.7 to 1.

Commanded B1S1 O2 Sensor Heater (Bank 1 Sensor 1)

--

0 - 100 %

This parameter displays the commanded state of the bank 1 sensor 1 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.

Commanded B1S2 O2 Sensor Heater (Bank 1 Sensor 2)

--

0 - 100 %

This parameter displays the commanded state of the bank 1 sensor 2 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.

Commanded B2S1 O2 Sensor Heater (Bank 2 Sensor 1)

--

0 - 100 %

This parameter displays the commanded state of the bank 2 sensor 1 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.

Commanded B2S2 O2 Sensor Heater (Bank 2 Sensor 2)

--

0 - 100 %

This parameter displays the commanded state of the bank 2 sensor 2 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.

Coolant Temperature

--

Degrees

This parameter displays the temperature of the engine coolant based on a voltage input from the engine coolant temperature (ECT) sensor to the control module. The scan tool will display a low value when the coolant temperature is low, and a high value when the coolant temperature is high.

Crank Request

--

Active/Inactive

This parameter displays whether the ignition switch has been cycled to the crank position requesting the control module to activate the starter relay.

Crankshaft Active Count

--

Counts

This parameter displays an incrementing counter when the control module receives a signal from the crankshaft position (CKP) sensor.

Crankshaft Resynchronise

--

Counts

This parameter displays the number of times the control module re-syncs with the crankshaft position (CKP) sensor.

Crankshaft Speed

--

RPM

This parameter displays the engine speed as calculated by the control module using the signal form the crankshaft position (CKP) sensor.

Cruise Control

--

On/Off

This parameter displays the status of the cruise control system as determined by the control module. The scan tool will display On when the cruise control system is in control of vehicle speed. The scan tool will display Off when the cruise control system is not operating.

Cruise Control Active

--

Yes/No

This parameter displays the status of the cruise control system as determined by the control module. The scan tool will display Yes when the cruise control system is in control of vehicle speed. The scan tool will display No when the cruise control system is not operating.

Cruise Control Cancel

--

Active/Inactive

This parameter displays the status of the Cruise Control Cancel.

Cruise Resume/Acceleration Switch

--

Active/Inactive

This parameter displays the status of the Cruise Resume/Acceleration switch.

Cruise Set / Decel Switch

--

Active/Inactive

This parameter displays the status of the Cruise Set/Deceleration switch.

Cycles of Misfire

--

Counts

This parameter displays the number of cylinder firing events that were recorded as misfires as determined by the control module.

Cylinder 1 Ignition Circuit Status

--

This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.

Cylinder 1 Injector Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.

Cylinder 1 Knock Detected

--

Yes/No

This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

Cylinder 2 Ignition Circuit Status

--

This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.

Cylinder 2 Injector Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.

Cylinder 2 Knock Detected

--

Yes/No

This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

Cylinder 3 Ignition Circuit Status

--

This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.

Cylinder 3 Injector Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.

Cylinder 3 Knock Detected

--

Yes/No

This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

Cylinder 4 Ignition Circuit Status

--

This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.

Cylinder 4 Injector Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.

Cylinder 4 Knock Detected

--

Yes/No

This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

Cylinder 5 Ignition Circuit Status

--

This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.

Cylinder 5 Injector Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.

Cylinder 5 Knock Detected

--

Yes/No

This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

Cylinder 6 Ignition Circuit Status

--

This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.

Cylinder 6 Injector Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.

Cylinder 6 Knock Detected

--

Yes/No

This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

Cylinder 7 Ignition Circuit Status

--

This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.

Cylinder 7 Injector Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.

Cylinder 7 Knock Detected

--

Yes/No

This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

Cylinder 8 Injector Circuit Status

--

This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.

Cylinder 8 Injector Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.

Cylinder 8 Knock Detected

--

Yes/No

This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.

Dec. Fuel Cutoff (Deceleration)

--

Active/Inactive

This parameter displays the status of the operating mode of the control module used to turn off the fuel injectors and the evaporative emission (EVAP) canister purge valve during certain deceleration conditions.

Desired Engine Idle Speed

--

RPM

This parameter displays the desired engine idle speed as commanded by the control module.

Desired Throttle Position

--

0 - 100 %

This parameter displays the angle of the throttle position (TP) in percent. This information is calculated by the control module using the signals from the throttle position sensors. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

Distance Since DTC Cleared

--

Km

This parameter displays the distance accumulated since an emission diagnostic trouble code was cleared. The scan tool will display increasing distance as the vehicle is driven.

ECM Immobilised

--

No_Yes

The scan tool displays Yes or No. The scan tool displays Yes if the body control module (BCM) and the control module lose communications with each other after the BCM sends the correct password. The scan tool displays No if the BCM is communicating the correct password to the ECM.

Engine Control Ignition Relay

--

On/Off

This parameter displays the state of the control circuit control module power relay as commanded by the control module. The scan tool displays ON with the engine running.

Engine Control Ignition Relay Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the status of the output driver for the EC Ignition Relay control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.

Engine Control Ignition Relay Feedback

--

V

This parameter displays the voltage available at the EC ignition relay pin of the control module.

Engine Load

--

%

This parameter displays the calculated engine load in percent based on inputs to the control module from various engine sensors.

Engine Oil Life Remaining

--

0 - 100 %

This parameter displays the percent of engine oil life remaining. The controller calculates the engine oil life by monitoring engine load, coolant temperature, and engine speed.

Engine Oil Pressure

--

kPa

This parameter displays the engine oil pressure.

Engine Oil Pressure Sensor

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.

Engine Oil Temperature

--

Degree

This parameter displays the temperature of the engine oil.

Engine Run Time

--

hh:mm:ss

This parameter displays the time elapsed since the engine was started. The scan tool will display the time in hours, minutes and seconds. The engine run time will reset to zero as soon as the engine stops running.

Engine Speed

--

RPM

This parameter displays the speed of the crankshaft as calculated by the control module based on inputs from the Crankshaft Position (CKP) Sensor. The scan tool will display the engine speed in revolutions per minute (RPM).

Engine Speed Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the status of the engine speed circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK/Incomplete if the circuit is operating correctly.

EVAP Purge Solenoid (Evaporative Emission)

--

%

This parameter displays the on-time or duty cycle of the EVAP canister purge solenoid commanded by the control module. Zero percent indicates no purge. One hundred percent indicates full purge.

EVAP Purge Solenoid Valve Circuit Status (Evaporative Emission)

--

Passed_Failed_Incomplete

This parameter displays the status of the output driver for the evaporative emission purge solenoid control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK/Incomplete if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.

Fan Relay 1

--

On/Off

This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is open, shorted to ground, or shorted to voltage. The parameter displays Indeterminate until the circuit has been commanded ON.

Fan Relay 1 Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is open, shorted to ground, or shorted to voltage. The parameter displays Indeterminate until the circuit has been commanded ON.

Fan Relay 2 and 3

--

On/Off

This parameter displays the control module commanded state of the fan relay control circuit.

Fan Relay 2 and 3 Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is open, shorted to ground, or shorted to voltage. The parameter displays Indeterminate until the relay control circuit has been commanded ON.

Fuel Level

--

0 - 100 %

This parameter displays the amount of fuel remaining in tall of the fuel tanks of the vehicle as a percentage. The control module calculates this level using the signals from the sensors used to monitor the fuel level in the fuel tanks. The scan tool will display a low reading when the total fuel level in the vehicle is low or near empty. The scan tool will display a high reading when the fuel level in the tank is high or near full.

Fuel Level Sensor 1 (Right)

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.

Fuel Level Sensor 2 (left)

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.

Fuel Pump Relay

--

On/Off

This parameter displays the commanded state of the fuel pump relay control circuit. The fuel pump relay should be ON when the scan tool indicates the fuel pump relay command is ON. The fuel pump relay should be OFF when the scan tool indicates the fuel pump relay command is OFF.

Fuel System Status

--

Closed Loop_Open Loop

The scan tool displays Open Loop or Closed Loop. The scan tool displays Closed Loop if the control module is controlling the fuel delivery according to the heated oxygen sensor (HO2S) voltages. The scan tool displays open loop if the control module is not adjusting for HO2S inputs. In open loop the control module bases fuel deliver on throttle position, engine coolant temperature, and mass airflow sensor inputs.

Fuel Pump Relay Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the state of the fuel pump relay control circuit. The parameter displays Fault if the fuel pump relay control circuit is open, shorted to ground, or shorted to voltage. The parameter displays Indeterminate until the circuit has been commanded ON.

Fuel Trim Cell

--

Index

This parameter displays the fuel trim cell as calculated by the control module based on many sensor inputs. The fuel trim cell indicates which cell is currently active.

Fuel Trim Learn

--

Enable/Disable

The scan tool displays Enabled or Disabled. When conditions are appropriate for enabling long term fuel trim corrections, the scan tool displays Enabled. If the scan tool displays Disabled, then long term fuel trim will not respond to changes in short term fuel trim.

Hot Open Loop

--

Inactive_Active

This parameter indicates the status of the fuel delivery system. The scan tool will display Active if the fuel system is running in Open Loop due to a temperature concern. The scan tool will display Inactive if the fuel system is operating normally.

Ignition Accessory Signal

--

On/Off

This parameter displays the state of the ignition input to the control module from the ignition switch. The scan tool will display ON when the ignition switch is in the ignition accessory position. The scan tool will display OFF when the ignition switch is in any other position.

Ignition Voltage

--

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.

Injector 1 Disabled Due

--

Yes/No

 

Injector 2 Disabled Due

--

Yes/No

 

Injector 3 Disabled Due

--

Yes/No

 

Injector 4 Disabled Due

--

Yes/No

 

Injector 5 Disabled Due

--

Yes/No

 

Injector 6 Disabled Due

--

Yes/No

 

Injector 7 Disabled Due

--

Yes/No

 

Injector 8 Disabled Due

--

Yes/No

 

Intake Air Temp

--

Degrees

This parameter displays the temperature of the intake air calculated by the control module based on the input from the intake air temperature (IAT). The scan tool will display a low value for a low intake air temperature, and a high value for a high intake air temperature.

Knock Retard

--

Degrees

The scan tool displays in °. This parameter indicates the amount of timing retard commanded by the control module. The scan tool will display a lower value if no knock is detected, and a higher value as more knock is detected and the control module retards the ignition timing.

MAF Performance Test (Mass Air Flow)

--

Okay_Fail

 

Malfunction Indicator (MI)

--

On_Off

This parameter displays the commanded state of the malfunction indicator lamp (MIL) control circuit. The malfunction indicator lamp should be on when the scan tool indicates the MIL Command is On. The malfunction indicator lamp should be off when the scan tool indicates the MIL Command is Off. The control module will command the MIL On when the ignition is ON with the engine OFF in order to perform a bulb check.

Malfunction Indicator (MI) Circuit Status

--

Passed_Failed_Incomplete

This parameter displays the status of the output driver for the malfunction indicator lamp control circuit. The scan tool will display Passed, Failed or Incomplete. The scan tool will display Pass/Fail if the circuit is operating correctly. The scan tool will display Incomplete if there is an open, short to ground, or a short to voltage on the circuit.

Manifold Absolute Pressure

--

kPa

The scan tool displays kPa. This parameter displays the pressure inside of the intake manifold as calculated by the control module based on the input from the MAP sensor. The scan tool will display a high value at cruising speed or wide open throttle (WOT). The scan tool will display a low value at idle speed.

Mass Air Flow Sensor

--

Hz

The scan tool displays in Hz. This parameter indicates the frequency signal sent from the MAF sensor to the control module. the scan tool will display a high value indicates a higher engine speed. The scan tool will display a low value at idle.

MI Requested by DTC (Malfunction Indicator)

--

No_Yes

This parameter indicates the reason the control module illuminated the MIL. The scan tool will display YES when the MIL is requested as a result of an A or B type DTC. The scan tool will display NO if the MIL is illuminated for another reason, such as transmission DTCs.

Misfire Current Cylinder 1

--

(#)

The scan tool will display in counts. This parameter indicates the number of cylinder firing events detected as possible misfires on each cylinder during the last 200 crankshaft revolutions as calculated by the control module. The scan tool will display a low number for a low number of cylinder misfire events. The scan tool will display a high number for a high number of cylinder misfire events.

Misfire Current Cylinder 2

--

(#)

Misfire Current Cylinder 3

--

(#)

Misfire Current Cylinder 4

--

(#)

Misfire Current Cylinder 5

--

(#)

Misfire Current Cylinder 6

--

(#)

Misfire Current Cylinder 7

--

(#)

Misfire Current Cylinder 8

--

(#)

Misfire History Cylinder 1

--

(#)

The scan tool displays in counts. This parameter displays the total level of cylinder misfires that have been calculated for each cylinder by the control module. This parameter will not update or show activity until a misfire DTC has become active. The misfire history counters will update every 200 cylinder firing events.

Misfire History Cylinder 2

--

(#)

Misfire History Cylinder 3

--

(#)

Misfire History Cylinder 4

--

(#)

Misfire History Cylinder 5

--

(#)

Misfire History Cylinder 6

--

(#)

Misfire History Cylinder 7

--

(#)

Misfire History Cylinder 8

--

(#)

Number of Warm-ups Since DTC Cleared

--

Counts

This parameter indicates the number of warm-up cycles that have occurred Since DTCs were cleared. The scan tool will display a higher counts as more warm-up cycles have occurred since the DTCs were cleared

Oil Change Symbol

--

On_Off

 

Oil Level

--

Normal_Low

This parameter displays the state of the engine oil level switch as determined by the control module. The scan tool will display Normal or Low. OK indicates that the engine oil level is not too low for safe operation of the engine. Low indicates the engine oil level is abnormally low and has closed the engine oil level switch.

Oil Temperature Sensor

--

°C

This parameter displays the engine oil pressure.

Power Enrichment

--

Active/Inactive

Scan tool displays ACTIVE or INACTIVE. ACTIVE displayed indicates that the control module has detected conditions appropriate to operate in Power Enrichment mode. The control module commands Power Enrichment mode when a large increase in throttle position and load is detected. While in Power Enrichment, the control module will increase the amount of fuel delivered by entering Open Loop and increasing the injector pulse width.

Powertrain Immobiliser Status

--

 

Reduced Engine Power

--

Active/Inactive

The scan tool displays Active or Inactive. The scan tool displays Active when the control module receives a signal from the throttle actuator control (TAC) module that a TAC system fault is occurring. The scan tool displays inactive when the engine is operating normally.

Requested Torque

--

0 - 100 %

This parameter indicates the percentage of available torque requested from the engine to the transmission as calculated by the control module. The scan tool will display a higher value for higher torque, and a lower value for lower torque.

Security Code Accepted

--

Yes_No

 

Security Code Lockout

--

Active_Inactive

 

Security Code Programmed

--

Yes_No

 

Spark Advance

--

Degrees CA

This parameter displays the amount of spark advance the control module is commanding on the ignition control circuits. The control module determines the desired advance.

Start-Up ECT

--

°C

This parameter indicates the engine coolant temperature at start-up, as calculated by the control module based on the input from the engine coolant temperature sensor. The scan tool will display a higher value at higher engine start-up temperatures, and a lower value at lower start-up temperatures.

Start-Up IAT

--

°C

Indicates the intake air temperature (IAT) at the time that the vehicle was started. Used to determine if the last start-up was a cold start. The scan tool range is -39 to +140°C (-38 to +284°F). This parameter indicates the ambient air temperature at start-up.

Starter Relay

--

On/Off

This parameter displays the control modules commanded state of the starter motor relay control circuit.

Starter Relay Circuit Status

--

Incomplete_Pass_Fail

This parameter displays the status of the output driver for the starter relay control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK/Incomplete if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.

TAC Forced Engine Shutdown (Throttle Actuator Control)

--

No_Yes

This parameter indicates the status of TAC control by the control module. The scan tool will display YES if the engine has been shut down due to a throttle control fault. The scan tool will display NO if the engine has not been shut down by a throttle control fault.

TAC Motor (Throttle Actuator Control)

--

Enabled_Disabled

This parameter indicates the status of the TAC motor driver. The scan tool will display Enabled if TAC motor operation is allowed. The scan tool will display disabled if the TAC motor is disabled.

TAC Motor Command (Throttle Actuator Control)

--

%

This parameter indicates the required duty cycle to maintain a desired throttle position. The scan tool will display a higher value if more effort is required to move the throttle to the desired position, such as physical resistance. The scan tool will display a lower value if less effort is required to move the throttle to the desired position.

Torque Management Spark Retard

--

°CA

his parameter indicates how much the ignition spark timing is being retarded to control torque by the control module. The scan tool will display a higher value under extreme torque control conditions such as spinning wheels. The scan tool will display a lower value under low torque control conditions such as light driving.

Total Knock Retard

Degrees CA

This parameter indicates how much ignition spark timing is being retarded due to all control systems monitored by the control module. The scan tool will display a high value during extreme conditions such as high temperatures and antilock braking. The scan tool will display a lower value during lighter driving conditions.

Total Misfire

(#)

The scan tool range is 0-255 counts. This parameter indicates the total level of misfire that has been detected on each cylinder. The misfire history counters will not update or show any activity until a misfire or DTC P0300 has become active. The misfire history counter will update every 200 cylinder firing events.

TP Sensor 1 (Throttle Position)

0 - 100 %

This parameter displays the angle of the throttle position (TP) sensor 1 in percent. This information is calculated by the control module using the signal from the throttle position sensor 1. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

TP Sensor 1 (Throttle Position)

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.

TTP Sensor 1- 2 Correlation (Throttle Position)

Okay_Not Okay

This parameter displays the results of a control module test that compares signals from the throttle position (TP) sensors 1 and 2 . The scan tool will display Agree when the signal from TP sensor 1 corresponds with the signal from TP sensor 2. The scan tool will display Disagree when the signal from TP sensor 1 conflicts with the signal from TP sensor 2.

TP Sensor 1 Learned Lower Position (Throttle Position)

V

This parameter displays the learned minimum value of TP sensor 1 as recorded by the control module during the last learn procedure.

TP Sensor 2 (Throttle Position)

%

This parameter displays the angle of the throttle position (TP) sensor 2 in percent. This information is calculated by the control module using the signal from the throttle position sensor 2. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

TP Sensor 2 (Throttle Position)

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.

TP Sensor 2 Learned Lower Position (Throttle Position)

Volts

The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.

Transmission Gear

P-N_In Gear

This parameter indicates the current state of the gear select switch on the transmission/transaxle as calculated by the control module based on the TR switch. The scan tool status will switch from High to Low as different combinations are met. On the scan tool in Park, the PRNDL would read P and A will be Low, and B and C will be High.

Transmission Oil Temperature

°C

 

Vehicle Speed

Km/h

This parameter indicates the vehicle speed calculated by the control module based on an input from the vehicle speed sensor (VSS). the scan tool will display a high value at higher vehicle speeds, and a low value at lower vehicle speeds.

Vehicle Speed Circuit Status

This parameter displays the status of the Vehicle Speed Circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK/Incomplete if the circuit is operating correctly.

Warm-ups without Emission Related DTC's

(w/o unit)

Faults: The scan tool displays in counts. This parameter counts the number of warm-up cycles without an emission fault present. The parameter increments until a fault occurs. If a fault occurs, the counter reverts to 0 until the fault is corrected. Clearing information with a scan tool or a loss of power to the ECM also resets the counter to 0.

Warm-ups without Non-Emission Related DTC'S

(w/o unit)

The scan tool displays in counts. This parameter counts the number of warm-up cycles without a non-emission fault present. The parameter increments until a fault occurs. If a fault occurs, the counter reverts to 0 until the fault is corrected. Clearing information with a scan tool or a loss of power to the ECM also resets the counter to 0.

Wide Open Throttle

No_Yes

This parameter indicates the throttle status commanded by the control module. The scan tool will display YES is the vehicle throttle is commanded to wide open. The scan tool will display NO if the vehicle throttle is commanded to an amount less than 100 percent.

Engine Control Module Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

Crankshaft Position Variation Learn

--

Enables the powertrain control module (ECM) to learn the variations in the crankshaft position (CKP) system. The ECM will learn the variations once the following conditions are met:

    • Engine coolant temperature (ECT) is more than a specified value.
    • All instructions on the scan tool have been completed.
    • The accelerator pedal is smoothly applied until the fuel cut-OFF, as specified on the scan tool, is achieved, and then immediately released.

The ECM learns the variation values on the deceleration from fuel cut-OFF.

Cylinder Power Balance

Fuel System

Enables/Disables a cylinder by turning OFF the fuel injector to the cylinder. The fuel injector is normally enabled. The ECM disables the fuel injector when the following conditions are met:

    • All instruction on the scan tool are completed
    • Stabilized engine speed
    • The fuel injector is selected

When Disable is selected the ECM turns the injector OFF for 30 seconds. During this period, the engine operates with a misfire.

Engine Controls Ignition Relay

Engine Output Controls

Enables or disables the Engine Controls Ignition Relay. The scan tool will command the engine controller to turn the relay ON or OFF. The normal commanded state is ON.

Engine Speed Control

TAC System

Activates the throttle activation control (TAC) system to change engine RPM. The normal commanded state is None. To enable the RPM control, all instruction on the scan tool must be completed. The system will increase or decrease the RPM within a range of 350-2000 RPM. The set step value changes the RPM by increments of 25 RPM, 100 RPM, and 500 RPM. The system remains in the commanded state until cancelled by the scan tool.

EVAP Purge Solenoid

Engine Output Controls/EVAP System

Activates the evaporative emission (EVAP) purge valve. The normal commanded state is None. The system will increase or decrease the amount of EVAP purge valve opening by 10 percent increments within a range of 0-100 percent. The system remains in the commanded state until cancelled by the tool or the fuel tank pressure (FTP) exceeds 32 mm Hg (17 in H20).

EVAP Purge/Seal

Engine Output Controls/EVAP System

This control enables two functions. One function increases or decreases the amount of purge by changing the duty cycle of the purge valve and commanding the vent ON, non-venting. The normal commanded state of both valves is None. The system will increase or decrease the amount of EVAP purge valve opening by 10 percent increments within a range of 0-100 percent. The second function seals the system after using the purge function to obtain a specific amount of FTP. When activated the purge valve is commanded to 0 percent and the vent valve is commanded ON, non-venting. Both functions remain in the commanded state until one of the following conditions occurs:

    • Cancelled by the tool
    • The FTP exceeds 32 mm Hg (17 in H20)

EVAP Service Bay Test

Engine Output Controls/EVAP System

Activates the On-board EVAP Diagnostic test.

EVAP Vent Solenoid

Engine Output Controls/EVAP System

Activates the EVAP vent solenoid. The normal commanded state is None. When commanded ON, the vent valve switches to non-venting. The system remains in the commanded state until one of the following conditions occurs:

    • Cancelled by the tool
    •  Purge is greater than 0 percent, and the fuel tank pressure exceeds 32 mm Hg (17 in H20)

Fuel Injector Balance

Fuel System

Enables the fuel injector in order to verify proper fuel injector flow. The ECM will pulse the selected injector when the following conditions are met:

    • All instruction on the scan tool completed
    • Fuel injector selected
    • Key ON, engine OFF

The selected fuel injector can only be flowed/pulsed once per ignition cycle.

Fuel Pump

Engine Output Controls/Fuel Pump

Controls the fuel pump relay. The normal commanded state is None. When commanded ON/OFF, the ECM turns the fuel pump ON/OFF. If the engine is running, and the fuel pump is commanded OFF, the engine will stall. The system remains in the commanded state until cancelled by the scan tool.

Fuel Trim Enable

Fuel System

Disables the PCMs ability to learn new fuel trim parameters. The system remains in the commanded state until cancelled by the scan tool.

Fuel Trim Reset

Fuel System

Activates the reset of fuel trim data in all of the fuel trim cells.

HO2S Bnk 1 Sensor 1 Heater

Engine Output Controls/Heated Oxygen Sensors

Commands HO2S heater ON, 0-100 percent in 10-percent increments while the engine is running.

HO2S Bnk 1 Sensor 2 Heater

Engine Output Controls/Heated Oxygen Sensors

Commands HO2S heater ON, 0-100 percent in 10-percent increments while the engine is running.

HO2S Bnk 2 Sensor 1 Heater

Engine Output Controls/Heated Oxygen Sensors

Commands HO2S heater ON, 0-100 percent in 10-percent increments while the engine is running.

HO2S Bnk 2 Sensor 2 Heater

Engine Output Controls/Heated Oxygen Sensors

Commands HO2S heater ON, 0-100 percent in 10-percent increments while the engine is running.

Idle Spark

Engine Output Controls/Spark Control

Enables or disables idle spark command. When commanded ON, the idle spark will be controlled to 13 degrees before top dead centre. The normal commanded state is OFF.

Loop Status

Engine Output Controls

Controls the system loop status. The commanded states include None, Open, or Closed. The normal commanded state is None. When commanded Open or Closed, the system remains in the commanded state until cancelled by the scan tool.

Malfunction Indicator Lamp

Engine Output Controls

Controls the malfunction indicator lamp (MIL). The commanded states include None, ON, and OFF. When commanded ON or OFF, the system remains in the commanded state until cancelled by the scan tool.

Misfire Graphic

--

Graphs the accumulated misfires occurring in each cylinder. The scan tool allows for a reset of the misfire graph.

Spark Retard

Engine Output Controls/Spark Control

Controls the amount of spark retard. The scan tool will command an increase or decrease in the amount of spark retard in 1-degree increments, within a range of 1-10 degrees. The degrees of spark retard will remain in the commanded state until cancelled by the scan tool. The normal commanded states is NONE.

Throttle Position

TAC System/Throttle Blade Control

Operates TAC motor in 10-percent increments to open or close the throttle blade. The test operates during key ON, engine OFF.