Engine Control Module Scan Tool Information V6
| Table 1: | Engine Control Module Scan Tool Data |
| Table 2: | Engine Control Module (ECM) Scan Tool Output Controls |
The Engine Control Module Scan Tool Data List contains all engine-related parameters that are available on the scan tool. The list is arranged in alphabetical order. A given 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 is determined:
| • | The Diagnostic System Check - Vehicle is completed. |
| • | No diagnostic trouble codes (DTCs) |
| • | On-board diagnostics are functioning properly |
The scan tool values from a properly running engine may be used for comparison with the engine you are diagnosing. The Engine Scan Tool Data List represents values that would be seen on a normally running engine.
Note: A scan tool that displays faulty data should not be used. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.
Only the parameters listed below are referenced in this service manual for use in diagnosis.
Parameter | System State | Expected Value | Description | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Base Operating Conditions: Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop | |||||||||||||||
5-volt Reference 1, 2, or 3 Circuit Status | -- | OK | This parameter will display OK if the circuit is good or Fault if a short to ground, short to B+ or open circuit is present. | ||||||||||||
A/C Disengage 1-8 History | A/C ON | Reason for A/C Disengagement | The parameter displays reason for the last 8 air conditioning (A/C) compressor disengagements in order from 1 to 8 with 8 being the most recent. There are 8 possible causes for the A/C compressor to disengage. | ||||||||||||
A/C High Side Pressure | A/C OFF | 0.75-1.5 Volts* | This parameter displays the voltage signal from the A/C high side pressure sensor input to the control module. * Varies with temperature, humidity, and altitude. | ||||||||||||
A/C ON | 1.3-2.5 Volts* | ||||||||||||||
A/C High Side Pressure | A/C OFF | 450-827 kPa (65-120 psi)* | This parameter displays the pressure from the A/C high side pressure sensor signal circuit to the control module. * Varies with temperature, humidity, and altitude. | ||||||||||||
A/C ON | 827-2,350 kPa (120-341 psi)* | ||||||||||||||
A/C Off for WOT | A/C ON | No | This parameter displays whether the control module is commanding the A/C compressor clutch relay off for wide open throttle (WOT). | ||||||||||||
A/C Pressure Disable | A/C ON | No | This parameter displays whether the A/C pressure is out of range for normal operation as determined by the control module. | ||||||||||||
A/C Relay Ckt Short Gnd Test Status | A/C ON or OFF | OK/Not Run | This parameter displays the state of the air conditioning (A/C) clutch relay control circuit. It can display OK, Fault or Not Run. The parameter displays Fault if the A/C clutch relay control circuit is shorted to ground. | ||||||||||||
A/C Relay Ckt Open Test Status | A/C ON or OFF | OK/Not Run | This parameter displays the state of the air conditioning (A/C) clutch relay control circuit. It can display OK, Fault or Not Run. The parameter displays Fault if the A/C clutch relay control circuit is open. | ||||||||||||
A/C Relay Ckt Short Volts Test Status | A/C ON or OFF | OK/Not Run | This parameter displays the state of the air conditioning (A/C) clutch relay control circuit. It can display OK, Fault or Not Run. The parameter displays Fault if the A/C clutch relay control circuit is shorted to voltage. | ||||||||||||
A/C Relay Command | A/C ON | On | This parameter displays the state of the air conditioning (A/C) clutch relay control circuit as commanded by the control module. | ||||||||||||
A/C Request Signal | A/C ON | Yes | This parameter displays the state of the A/C request input to the control module from the heating, ventilation, and air conditioning (HVAC) controls. | ||||||||||||
Actual Fuel Rail Pressure (If Equipped) | -- | 3.4-5.5 mPa (500-800 psi) | This parameter displays the Actual Fuel Rail Pressure in a range from 0 to 2900 psi. | ||||||||||||
Air Flow Calculated | -- | g/s Varies | This parameter displays the air flow into the engine as calculated by the control module. | ||||||||||||
Ambient Air Temperature | -- | °C °F Varies | This parameter displays the outside air temperature as calculated by the control module. | ||||||||||||
APP Indicated Angle | Accelerator pedal not actuated | 0% | This parameter displays the angle of the accelerator pedal position (APP) as calculated by the control module using the signals from the APP sensors. | ||||||||||||
Accelerator pedal fully actuated | 100% | ||||||||||||||
APP Sensor 1 | Accelerator pedal not actuated | 0.7-1.2 Volts | This parameter displays the actual voltage on the accelerator pedal position (APP) sensor 1 signal circuit as measured by the control module. | ||||||||||||
Accelerator pedal fully actuated | 4.2-4.5 Volts | ||||||||||||||
APP Sensor 2 | Accelerator pedal not actuated | 0.3-0.5 Volts | This parameter displays the actual voltage on the accelerator pedal position (APP) sensor 2 signal circuit as measured by the control module. | ||||||||||||
Accelerator pedal fully actuated | 2.2-2.5 Volts | ||||||||||||||
APP Sensor 1 and 2 | -- | Agree | 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. | ||||||||||||
Aux. Coolant Pump Relay (If equipped) | -- | On/Off | This parameter displays the state of the Auxiliary coolant pump relay control circuit. | ||||||||||||
Aux. Coolant Pump Relay Ckt Short Gnd Test Status (If equipped) | -- | OK/Not Run | This parameter displays the state of the Auxiliary coolant pump relay control circuit. It can display OK, Fault or Not Run. The parameter displays Fault if the Auxiliary coolant pump relay control circuit is shorted to ground. | ||||||||||||
Aux. Coolant Pump Relay Ckt Open Test Status (If equipped) | -- | OK/Not Run | This parameter displays the state of the Auxiliary coolant pump relay control circuit. It can display OK, Fault or Not Run. The parameter displays Fault if the Auxiliary coolant pump relay control circuit is open. | ||||||||||||
Aux. Coolant Pump Relay Ckt Short Volts Test Status (If equipped) | -- | OK/Not Run | This parameter displays the state of the Auxiliary coolant pump relay control circuit. It can display OK, Fault or Not Run. The parameter displays Fault if the Auxiliary coolant pump relay control circuit is shorted to voltage. | ||||||||||||
Aux. Vac. Pump Relay Command (If equipped) | -- | On/Off | This parameter displays the state of the Auxiliary Vacuum pump relay control circuit. | ||||||||||||
Aux. Vac Pump Relay Ckt Short Gnd Test Status (If equipped) | -- | OK/Not Run | This parameter displays the state of the Auxiliary Vacuum pump relay control circuit. It can display OK, Fault or Not Run. The parameter displays Fault if the Auxiliary coolant pump relay control circuit is shorted to ground. | ||||||||||||
Aux. Vac Pump Relay Ckt Open Test Status (If equipped) | -- | OK/Not Run | This parameter displays the state of the Auxiliary Vacuum pump relay control circuit. It can display OK, Fault or Not Run. The parameter displays Fault if the Auxiliary coolant pump relay control circuit is Open. | ||||||||||||
Aux. Vac Pump Relay Ckt Short Volts Test Status (If equipped) | -- | OK/Not Run | This parameter displays the state of the Auxiliary Vacuum pump relay control circuit. It can display OK, Fault or Not Run. The parameter displays Fault if the Auxiliary coolant pump relay control circuit is shorted to voltage. | ||||||||||||
Average Injector PWM | -- | 1 Ms | This parameter displays the average ON time of all the Injectors. | ||||||||||||
BARO | -- | 65-104 kPa (8-16 psi) | This parameter displays the barometric pressure. The control module uses the barometric pressure sensor input for fuel control to compensate for altitude differences. | ||||||||||||
BARO | -- | 2.5-4.0 Volts | This parameter displays the barometric pressure sensor voltage. | ||||||||||||
Brake Pedal Signal Status | -- | Valid/Invalid | This parameter displays the serial data message of the brake signal from the electronic brake and traction control module (EBTCM). | ||||||||||||
Calculated ECT - Closed Loop Fuel Control | -- | -39 to +60°C (-38 to +140°F) | This parameter displays the modeled temperature that the 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 Diagnosis | -- | 40 to +95°C (104 to +203°F) | This parameter displays the modeled temperature that the control module calculates from the intake air temperature, 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. | ||||||||||||
Calc. TWC Temp. Bank 1 and 2 | -- | C° F° Varies | This parameter displays the catalytic converter temperature as calculated by the control module. | ||||||||||||
Catalytic Converter Protection Active | -- | No | This parameter displays if the control module is commanding catalytic converter protection. | ||||||||||||
Catalyst Monitor Complete This Ignition | -- | Yes | This parameter displays the monitor completion status during the current driving/monitoring cycle. | ||||||||||||
Catalyst Monitor Enabled this Ignition | -- | Yes | This parameter displays the monitor enable status during the current driving/monitoring cycle. | ||||||||||||
CKP Active Counter | -- | 0-255 Counts | This parameter displays an incrementing counter when the control module receives a signal from the crankshaft position sensor (CKP). | ||||||||||||
CKP Resync Counter | -- | 0 Counts | This parameter displays the number of times the control module has to resynchronize with the CKP sensor. The parameter will begin to increment if the control module does not detect a CKP reference pulse. The parameter will reset to 0 after the ignition is switched OFF. | ||||||||||||
Clutch Start Switch (If Equipped) | Clutch pedal not actuated | Off | This parameter displays the state of the clutch pedal as determined by the control module from the clutch start switch. | ||||||||||||
Clutch pedal fully actuated | On | ||||||||||||||
CMP Sensor | -- | 0 RPM | This parameter displays the speed of the engine as calculated by the signal from a camshaft position (CMP) sensor. This parameter will always display 0 unless a condition with the CKP sensor or CKP reluctor exists. If a CKP condition exists the control module will use a valid CMP sensor signal to determine engine speed and crank/camshaft position. | ||||||||||||
Cold Startup | -- | Yes/No | This parameter displays whether the engine meets the conditions for a cold startup during the present ignition cycle. The scan tool displays Yes when the conditions for a cold startup are met during the ignition cycle. The scan tool displays No when the conditions for a cold startup are not met during the present ignition cycle. Conditions for a cold startup 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 A/F Equivalence Ratio | -- | Varies | 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 approximately 14.7 to 1. | ||||||||||||
Component Monitor Enable This Ignition | -- | Yes | This parameter displays the diagnostic monitor enable status during the current driving/monitoring cycle. | ||||||||||||
Control Module Voltage | -- | 14.25 volts | This parameter displays the state of the ignition system voltage available at the control module. | ||||||||||||
CPP Switch (If Equipped) | Clutch pedal not actuated | Released | This parameter displays the state of the clutch pedal as determined by the control module from the clutch pedal switch. | ||||||||||||
Clutch pedal fully actuated | Applied | ||||||||||||||
Crank Request Signal | Ignition switch not in the crank position | No | This parameter displays whether the ignition switch has been cycled to the crank position requesting the control module to activate the starter relay. | ||||||||||||
Ignition switch in the crank position | Yes | ||||||||||||||
Cruise Control Active | -- | No | This parameter displays the status of the cruise control system as determined by the control module. | ||||||||||||
Cruise Disengage 1-8 History | Cruise ON | Reason for Cruise Disengagement | The parameter displays the last 8 cruise control disengages in order from 1 to 8, with 8 being the most recent. There are approximately 30 possible causes for the cruise control to disengage | ||||||||||||
Cruise Inhibited | Cruise ON | Yes | The parameter displays Yes until all of the conditions required to activate the cruise control system are met. | ||||||||||||
Cruise Inhibit Reason | Cruise OFF | OFF | The parameter displays the reason the cruise control system cannot engage. | ||||||||||||
Cruise ON | Park/Neutral | ||||||||||||||
Cruise On/Off Switch | -- | On/Off | The engine control module (ECM) monitors the signal circuit of the cruise control switch. A closed switch is displayed as On. | ||||||||||||
Cruise Resume/Accel. Switch | -- | Active/Inactive | The scan tool displays On, when the cruise On/Off switch is ON and the resume/accel (+) button is pressed, the ECM detects a predetermined voltage value for the resume/accel. switch. | ||||||||||||
Cruise Set/Coast Switch | -- | Active/Inactive | The scan tool displays On, when the cruise on/off switch is ON and the ECM detects a predetermined voltage value for the set/coast (-) switch. | ||||||||||||
Current Gear | Transmission in Park/Neutral | P/N | This parameter displays the transmission gear commanded by the transmission control module. | ||||||||||||
Transmission not in Park/Neutral | Reverse/1st-5th | ||||||||||||||
Cycles of Misfire Data | -- | 0-3,000 counts | This parameter displays the number of cylinder firing events recorded by the control module. | ||||||||||||
Cyl. 1-6 IC Ckt Short Gnd Test Status | -- | OK/Not Run | This parameter displays the state of the Ignition control circuit. The parameter displays Fault if the Ignition control circuit is shorted to ground. | ||||||||||||
Cyl. 1-6 IC Ckt Open Test Status | -- | OK/Not Run | This parameter displays the state of the Ignition control circuit. The parameter displays Fault if the Ignition control circuit is open. | ||||||||||||
Cyl. 1-6 IC Ckt Short Volts Test Status | -- | OK/Not Run | This parameter displays the state of the Ignition control circuit. The parameter displays Fault if the Ignition control circuit is shorted to voltage. | ||||||||||||
Cyl. 1-6 Inj. Ckt Short Gnd Test Status | -- | OK/Not Run | This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is shorted to ground. | ||||||||||||
Cyl. 1-6 Inj. Ckt Open Test Status | -- | OK/Not Run | This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open. | ||||||||||||
Cyl. 1-6 Inj. Ckt Short Volts Test Status | -- | OK/Not Run | This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is shorted to voltage. | ||||||||||||
Cyl. 1-6 Knock Retard | -- | 0 Degrees | 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. | ||||||||||||
Decel. Fuel Cutoff | -- | Inactive | This parameter displays the status of the operating mode of the control module used to turn off the fuel injectors and the EVAP canister purge valve during certain deceleration conditions. | ||||||||||||
Desired Exh. CMP Bank 1 or 2 | Engine Idling | 0 Degrees | This parameter displays the desired exhaust camshaft angle as commanded by the control module. | ||||||||||||
Engine speed at 2000 RPM | 10 Degrees | ||||||||||||||
Desired Fuel Rail Pressure (If Equipped) | -- | Varies 3.4 mPa to 5.5 mPa ( 500 to 800 psi) | This parameter displays the desired Fuel Rail Pressure commanded by the control module. | ||||||||||||
Desired Idle Speed | -- | Approximately 650 RPM | This parameter displays the desired engine idle speed as commanded by the control module. The desired idle speed varies depending on engine load. | ||||||||||||
Desired Int. CMP Bank 1 or 2 | Engine Idling | 0 Degrees | This parameter displays the desired intake camshaft angle as commanded by the control module. | ||||||||||||
Engine speed at 2000 RPM | 10 Degrees | ||||||||||||||
Distance Since DTC Cleared | -- | 0 Km/mi | This parameter displays in kilometers or miles the distance traveled since a DTC was cleared. | ||||||||||||
DTC Set This Ignition | -- | No | This parameter displays Yes if a DTC set on the current ignition cycle. | ||||||||||||
EC Ignition Relay Command | -- | On | This parameter displays the state of the control circuit for control module power relay as commanded by the control module. | ||||||||||||
EC Ignition Relay Feedback Signal | -- | 12.0-14.9 Volts | This parameter displays the voltage available at the EC ignition relay pin of the control module. | ||||||||||||
ECM in VTD Fail Enable | -- | No | This parameter indicates whether or not the engine control module (ECM) is in failure enable mode for the vehicle theft deterrent (VTD) system. | ||||||||||||
ECT Sensor | -- | 88 to 105°C (190 to 221°F) | This parameter displays the temperature of the engine coolant based on input to the control module from the engine coolant temperature (ECT) sensor. | ||||||||||||
Engine Load | Engine Idling | 25-45% | This parameter displays the calculated engine load in percent based on inputs to the control module from various engine sensors. | ||||||||||||
Engine speed at 2,500 RPM | 40-60% | ||||||||||||||
Engine OFF EVAP Test Conditions Met | -- | No | This parameter displays Yes if the conditions for running the Engine Off EVAP diagnostic are met. | ||||||||||||
Engine Off Time | Engine OFF | 0:00:00 Seconds - Varies | This parameter displays the amount of time that has elapsed since the engine was last cycled OFF. | ||||||||||||
Engine Oil Level Switch | -- | OK | This parameter displays if the level of the engine oil is within range as determined by the control module from information received from the engine oil level switch. | ||||||||||||
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 Sensor (If Equipped) | -- | 103 kPa (15 psi) to 241 kPa (35 psi) | This parameter displays the engine oil pressure. | ||||||||||||
Engine Oil Temperature Calculated | -- | Varies | The parameter displays the temperature of the engine oil as calculated by the control module using various sensor inputs. | ||||||||||||
Engine Run Time | Engine Operating | 0:00:00 Increments when the engine is operating | This parameter displays the time elapsed since the engine was started. | ||||||||||||
Engine Speed | Engine Cranking | Greater than 60 RPM | This parameter displays the speed of the engine crankshaft rotation from information received from the crankshaft position (CKP) sensor. If there is a CKP sensor DTC, the ECM calculates the engine speed from one of the camshaft position (CMP) sensors. | ||||||||||||
Engine Idling | 550-700 RPM | ||||||||||||||
EVAP Fault History | -- | No Fault | This parameter displays the result of the evaporative emission (EVAP) system as determined by the control module. The scan tool will display the following:
| ||||||||||||
EVAP Monitor Complete This Ignition | -- | Yes/No | This parameter displays the diagnostic monitor completion status during the current driving/monitoring cycle. | ||||||||||||
EVAP Monitor Enabled This Ignition | -- | Yes/No | This parameter displays the diagnostic monitor enable status during the current driving/monitoring cycle. | ||||||||||||
EVAP Purge Sol Ckt Short Gnd Test Status | -- | OK/Not Run | This parameter displays the state of the evaporative emission (EVAP) purge solenoid control circuit. The parameter displays Fault if the EVAP purge solenoid control circuit is shorted to ground. | ||||||||||||
EVAP Purge Sol Ckt Open Test Status | -- | OK/Not Run | This parameter displays the state of the evaporative emission (EVAP) purge solenoid control circuit. The parameter displays Fault if the EVAP purge solenoid control circuit is open. | ||||||||||||
EVAP Purge Sol Ckt Short Volts Test Status | -- | OK/Not Run | This parameter displays the state of the evaporative emission (EVAP) purge solenoid control circuit. The parameter displays Fault if the EVAP purge solenoid control circuit is shorted to voltage. | ||||||||||||
EVAP Purge Solenoid Command | -- | 0-100% | 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 Vent Sol Ckt Short Gnd Test Status | -- | OK/Not Run | This parameter displays the state of the EVAP vent solenoid control circuit. The parameter displays Fault if the EVAP vent solenoid control circuit is shorted to ground. This parameter may not change if the scan tool is used to command the EVAP vent solenoid ON. | ||||||||||||
EVAP Vent Sol Ckt Open Test Status | -- | OK/Not Run | This parameter displays the state of the EVAP vent solenoid control circuit. The parameter displays Fault if the EVAP vent solenoid control circuit is open. This parameter may not change if the scan tool is used to command the EVAP vent solenoid ON. | ||||||||||||
EVAP Vent Sol Ckt Short Volts Test Status | -- | OK/Not Run | This parameter displays the state of the EVAP vent solenoid control circuit. The parameter displays Fault if the EVAP vent solenoid control circuit is shorted to voltage. This parameter may not change if the scan tool is used to command the EVAP vent solenoid ON. | ||||||||||||
EVAP Vent Solenoid Command | -- | Venting | This parameter displays the state of the control circuit for evaporative emission (EVAP) vent solenoid as commanded by the control module. | ||||||||||||
Exh. CMP Angle Bank 1 or 2 | Engine Idling | 0 Degrees | This parameter displays the actual exhaust camshaft position in degrees. | ||||||||||||
Engine speed at 2000 RPM | 10 Degrees | ||||||||||||||
Exh. CMP Angle Bank 1 or 2 Variance | Engine Idling | 0 Degrees | This parameter displays in degrees, the difference between the desired exhaust camshaft position and the actual exhaust camshaft position. | ||||||||||||
Engine speed at 2000 RPM | 0 Degrees | ||||||||||||||
Exh. CMP Bank 1 or 2 Active Counter | -- | 0-255 | This parameter displays an incrementing counter when the control module receives a signal from the exhaust camshaft position (CMP) sensor. | ||||||||||||
Exh. CMP Bank 1 or 2 Command | Engine Idling | 20% | This parameter displays the on-time or duty cycle of the exhaust camshaft position (CMP) actuator solenoid valve as commanded by the control module. | ||||||||||||
Engine speed at 2000 RPM | 50% | ||||||||||||||
Exh CMP Sol Bn 1 or 2 Ckt Short Gnd Test Status | -- | OK/Not Run | 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 shorted to ground. | ||||||||||||
Exh CMP Sol Bn 1 or 2 Ckt Open Test Status | -- | OK/Not Run | 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. | ||||||||||||
Exh CMP Sol Bn 1 Ckt or 2 Short Volts Test Status | -- | OK/Not Run | 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 shorted to voltage. | ||||||||||||
Extended Travel Brake Pedal Switch | -- | Released | This parameter will display the state of the brake pedal, applied or released. | ||||||||||||
FC Relay 1 Ckt Short Gnd Test Status | -- | OK/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is shorted to ground. | ||||||||||||
FC Relay 1 Ckt Open Test Status | -- | OK/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is open. | ||||||||||||
FC Relay 1 Ckt Short Volts Test Status | -- | OK/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is shorted to voltage. | ||||||||||||
FC Relays 2 and 3 Ckt Short Gnd Test Status | -- | OK/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is shorted to ground. | ||||||||||||
FC Relays 2 and 3 Ckt Open Test Status | -- | OK/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is open. | ||||||||||||
FC Relays 2 and 3 Ckt Short Volts Test Status | -- | OK/Not Run | This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is shorted to voltage. | ||||||||||||
FC Relay 1 Command | -- | Varies | This parameter displays the commanded state of the fan relay 1 control circuit. The cooling fan relay 1 should be ON when the scan tool indicates the FC Relay 1 Command is ON. The cooling fan relay 1 should be OFF when the scan tool indicates the FC Relay 1` Command is OFF. | ||||||||||||
FC Relay 2 and 3 Command | -- | Varies | This parameter displays the commanded state of the fan relay 2 and 3 control circuit. Cooling fan relays 2 and 3 should be ON when the scan tool indicates the FC Relay 2 and 3 Command is ON. Cooling fan relays 2 and 3 should be OFF when the scan tool indicates the FC Relay 2 and 3` Command is OFF. | ||||||||||||
Fuel Level Sensor | -- | 0-5 Volts | This parameter displays the voltage signal received by the control module from the fuel level sensor. | ||||||||||||
Fuel Level Sensor Left Tank (If Equipped) | -- | 0-5 Volts | This parameter displays the voltage signal received by the control module from the secondary fuel level sensor in the left side of the fuel tank. | ||||||||||||
Fuel Level Sensor Right Tank (If Equipped) | -- | 0-5 Volts | This parameter displays the voltage signal received by the control module from the primary fuel level sensor in the right side of the fuel tank. | ||||||||||||
Fuel Pump Relay Command | Ignition ON, engine OFF | Fuel pump on for 2 seconds | This parameter displays the control modules commanded state of the fuel pump relay control circuit. Or, the commanded state of the enable circuit for the fuel pump control module (FPCM), if equipped. | ||||||||||||
Engine idling | On | ||||||||||||||
FRP Regulator Command (If Equipped) | -- | 130 to 135 Degrees | The scan tool displays in degrees, the FRP Regulator ON time as commanded by the control module. | ||||||||||||
Fuel Rail Pressure Sensor (If Equipped) | -- | 0 to 5 volts | This parameter displays the voltage signal received by the control module from the fuel rail pressure (FRP) sensor. | ||||||||||||
Fuel Tank Level Remaining | -- | Liter/Gallon - Varies | This parameter displays the amount of fuel in liters/gallons that remains in the fuel tank as determined by the control module. | ||||||||||||
Fuel Tank Level Remaining | -- | 0-100% | This parameter displays the amount of fuel in the fuel tank in percent of range, as calculated by the control module. | ||||||||||||
Fuel Tank Pressure Sensor | Ignition ON, engine OFF | 0 in H2O/mm Hg | This parameter displays the pressure/vacuum inside the fuel tank. A negative value indicates a vacuum, while a positive value indicates a pressure. | ||||||||||||
Fuel Tank Pressure Sensor | Ignition ON, engine OFF | 0-5 Volts | This parameter displays the voltage signal received by the control module from the fuel tank pressure (FTP) sensor. | ||||||||||||
Fuel Tank Rated Capacity | -- | Varies | This parameter displays the capacity of the fuel tank in liters or gallons. The rated capacity displayed by the scan tool will varies with vehicle type. | ||||||||||||
Fuel Trim Learn | -- | Disabled | This parameter displays Enabled when conditions are appropriate for enabling long term fuel trim corrections. This indicates that the long term fuel trim is adapting continuing amounts of short term fuel trim. If the scan tool displays Disabled, then long term fuel trim will not respond to changes in short term fuel trim. | ||||||||||||
Fuel Volatility | -- | Varies | This parameter indicates the rate the fuel can be vaporized in the cylinder as calculated by the control module. The scan tool will display HIGH when the fuel volatility is high. The scan tool will display LOW when the fuel volatility is low. | ||||||||||||
GEN L-Terminal Ckt Short Gnd Test Status | -- | OK/Not Run | This parameter displays the state of the generator L circuit terminal. The parameter displays Fault if the generator L circuit is shorted to ground. | ||||||||||||
GEN L-Terminal Ckt Open Test Status | -- | OK/Not Run | This parameter displays the state of the generator L circuit terminal. The parameter displays Fault if the generator L circuit is open. | ||||||||||||
GEN L-Terminal Ckt Short Volts Test Status | -- | OK/Not Run | This parameter displays the state of the generator L circuit terminal. The parameter displays Fault if the generator L circuit is shorted to voltage. | ||||||||||||
GEN L-Terminal Signal Command | -- | 0-100% | This parameter displays the control modules commanded state of the voltage regulator on the generator. | ||||||||||||
Generator F-Terminal Signal | -- | 0-100% | This parameter displays the amount of generator on-time as commanded by the control module. The higher the percentage the greater the generator output. | ||||||||||||
HO2S Bank 1 or 2 Sensor 1 | -- | 50-900 mV - Varies | This parameter displays the voltage output from the HO2S to the control module. A lower voltage indicates a lean exhaust, while a higher voltage indicates a rich exhaust. | ||||||||||||
HO2S Bank 1 or 2 Sensor 2 | -- | 400-700 mV - Varies | This parameter displays the voltage output from the HO2S to the control module. A lower voltage indicates a lean exhaust, while a higher voltage indicates a rich exhaust. | ||||||||||||
HO2S Bn 1 or 2 Sen 1 or 2 Htr Ckt Short Gnd Test Status | -- | OK/Not Run | This parameter displays the state of the oxygen sensor heater control circuit. The parameter displays Fault if the oxygen sensor heater control circuit is shorted to ground. | ||||||||||||
HO2S Bn 1 or 2 Sen 1 or 2 Htr Ckt Open Test Status | -- | OK/Not Run | 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. | ||||||||||||
HO2S Bn 1 or 2 Sen 1 or 2 Htr Ckt Short Volts Test Status | -- | OK/Not Run | This parameter displays the state of the oxygen sensor heater control circuit. The parameter displays Fault if the oxygen sensor heater control circuit is shorted to voltage. | ||||||||||||
HO2S Bank 1 or 2 Sensor 1 or 2 Heater Command | -- | 0-100% | This parameter displays the HO2S heater ON time in percentage, as commanded by the control module. | ||||||||||||
HO2S Bank 1 or 2 Sensor 1 or 2 Heater Command | -- | ON/OFF | This parameter display the state of the HO2S heater control circuit as commanded by the control module. | ||||||||||||
HO2S/O2S Monitor Complete This Ignition | -- | Yes/No | This parameter displays the diagnostic monitor completion status during the current driving/monitoring cycle. | ||||||||||||
HO2S/O2S Monitor Enabled This Ignition | -- | Yes/No | This parameter displays the diagnostic monitor enable status during the current driving/monitoring cycle. | ||||||||||||
HO2S Sensing Element Bn. 1 or 2 Sensor 1 | -- | 70-90 Ohms Depends on Temperature | This parameter displays the resistance of the sensing element within the control module. | ||||||||||||
HO2S Sensing Element Bn. 1 or 2 Sensor 2 | -- | 20-300 Ohms Depends on Temperature | This parameter displays the resistance of the sensing element within the control module. | ||||||||||||
HO2S Bn. 1 or 2 Sensor 1 Module Signal | -- | 1-5 Volts | This parameter displays the voltage of the HO2S control transistor, which is internal to the ECM. | ||||||||||||
IAT Sensor | -- | -39° to +140°C (-38° to +284°F) | This parameter displays the temperature of the air entering the air induction system based on input to the control module from the intake air temperature (IAT) sensor. | ||||||||||||
Ignition Accessory Signal | -- | On | This parameter displays On when the control module detects a voltage at the ignition accessory input terminal. | ||||||||||||
Ignition 0 Signal | -- | On | This parameter displays On when the control module detects a voltage at the ignition 0 input terminal. | ||||||||||||
Ignition 1 Signal | -- | B+ | This parameter displays B+ when the control module detects a voltage at the ignition 1 input terminal. | ||||||||||||
Ignition 1 Signal | -- | On | This parameter displays On when the control module detects a voltage at the ignition 1 input terminal. | ||||||||||||
IMT (IMRC) Ckt Short Gnd Test Status (If equipped) | -- | OK/Not Run | This parameter displays the state of the intake manifold tuning (IMT) valve solenoid control circuit. The parameter displays Fault if the IMT Valve solenoid control circuit is shorted to ground. | ||||||||||||
IMT (IMRC) Ckt Open Test Status (If equipped) | -- | OK/Not Run | This parameter displays the state of the intake manifold tuning (IMT) valve solenoid control circuit. The parameter displays Fault if the IMT Valve solenoid control circuit is open. | ||||||||||||
IMT (IMRC) Ckt Short Volts Test Status (If equipped) | -- | OK/Not Run | This parameter displays the state of the intake manifold tuning (IMT) valve solenoid control circuit. The parameter displays Fault if the IMT Valve solenoid control circuit is shorted to voltage. | ||||||||||||
IMT (IMRC) Valve Solenoid Command (If equipped) | -- | Off | This parameter displays the control modules commanded state of the IMT Valve solenoid. | ||||||||||||
Initial Brake Apply Signal | Brake pedal not actuated | Released | This parameter displays the state of the brake pedal that is transmitted over the serial data circuit from the electronic brake control module (EBCM). | ||||||||||||
Brake pedal partially actuated | Applied | ||||||||||||||
Injector 1-6 Command | Engine idling | 0.82-1.50 ms | This parameter displays the amount of fuel injector ON time or pulse width as commanded by the control module. | ||||||||||||
Injector 1-6 Disabled Due To Misfire | Engine idling | No | 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 misfire detection. The scan tool will display NO if the fuel injector is not being disabled by the control module due to a misfire. | ||||||||||||
Int. CMP Angle Bank 1 or 2 | Engine Idling | 0 Degrees | This parameter displays the actual intake camshaft position in degrees. | ||||||||||||
Engine speed at 2000 RPM | 10 Degrees | ||||||||||||||
Int. CMP Angle Bank 1 or 2 Variance | Engine Idling | 0 Degrees | This parameter displays in degrees, the difference between the desired intake camshaft position and the actual intake camshaft position. | ||||||||||||
Engine speed at 2000 RPM | 0 Degrees | ||||||||||||||
Int. CMP Bank 1 or 2 Active Counter | -- | 0-255 | This parameter displays an incrementing counter when the control module receives a signal from the intake camshaft position (CMP) sensor. | ||||||||||||
Int. CMP Bank 1 or 2 Command | Engine Idling | 20 % | This parameter displays the on-time or duty cycle of the intake camshaft position (CMP) actuator solenoid valve as commanded by the control module. | ||||||||||||
Engine speed at 2000 RPM | 50 % | ||||||||||||||
Int CMP Sol Bn 1 or 2 Ckt Short Gnd Test Status | -- | OK/Not Run | 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 shorted to ground. | ||||||||||||
Int CMP Sol Bn 1 or 2 Ckt Open Test Status | -- | OK/Not Run | 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. | ||||||||||||
Int CMP Sol Bn 1 or 2 Ckt Short Volts Test Status | -- | OK/Not Run | 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 shorted to voltage. | ||||||||||||
Knock Detected Cyl. 1-6 | -- | No | This parameter displays Yes if the control module detects an abnormal noise or detonation that is particular to an individual cylinder. | ||||||||||||
Knock Retard | -- | 0 Degrees | This parameter indicates the amount of spark advance the control module removes from the ignition control (IC) spark advance in response to the signal from the knock sensors. | ||||||||||||
KS Reference Bn 1 or 2 | -- | 3-5 Volts | This parameter displays in voltage, the normal noise/vibration, learned by the control module. | ||||||||||||
KS 1 or 2 Signal | -- | 3.86-5.02 Volts | This parameters displays the voltage input to the control module from the knock sensor (KS). | ||||||||||||
Loop Status Bn 1 or 2 Sen. 1 | -- | Closed Loop | This parameter displays the state of the fuel control system as commanded by the control module. Closed Loop operation indicates that the control module is controlling the fuel delivery based off the oxygen sensors input signal. In Open Loop operation the control module ignores the oxygen sensor input signal and bases the amount of fuel to be delivered on other sensor inputs. | ||||||||||||
Loop Status Bn 1 or 2 Sen. 2 | -- | Open Loop | This parameter displays the state of the rear heated oxygen sensors as commanded by the control module. The rear sensors will not go into Closed Loop until the ECM determines that the HO2S is ready for operation. | ||||||||||||
Low EOP Indicator Command | -- | Off | This parameter displays the commanded state of the low EOP lamp control circuit by the control module. | ||||||||||||
Long Term FT Bank 1 or 2 | -- | 0% | This parameter displays the commanded Long Term Fuel Trim correction by the control module for bank 1 or bank 2 for cruise and acceleration conditions. | ||||||||||||
LT FT Bn. 1 or Bn. 2 Idle/Decel | -- | 0% | This parameter displays the commanded Long Term Fuel Trim correction by the control module for bank 1 or bank 2 for idle and deceleration conditions. | ||||||||||||
MAF Sensor | Engine Idling | 3.0-8.3 g/s | This parameter displays in grams per second, the measured quantity of air flowing into the engine during all operating conditions. | ||||||||||||
Engine speed at 2,500 RPM | 11.88 g/s | ||||||||||||||
MAF Sensor | Engine Idling | 2,000-2,500 Hz | The scan tool displays a range of 0-65,555 hertz. This parameter displays the frequency signal input to the control module, and represents measured quantity of air flowing into the engine during all operating conditions. | ||||||||||||
MIL Ckt Short Gnd Test Status | -- | OK/Not Run | This parameter displays the state of the MIL control circuit. The parameter displays Fault if the MIL control circuit is shorted to ground. | ||||||||||||
MIL Ckt Open Test Status | -- | OK/Not Run | This parameter displays the state of the MIL control circuit. The parameter displays Fault if the MIL control circuit is open. | ||||||||||||
MIL Ckt Short Volts Test Status | -- | OK/Not Run | This parameter displays the state of the MIL control circuit. The parameter displays Fault if the MIL control circuit is shorted to voltage. | ||||||||||||
MIL Command | -- | Off | This parameter displays the commanded state of the malfunction indicator lamp (MIL) control circuit by the control module. | ||||||||||||
Mil Requested by DTC | -- | No | 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. | ||||||||||||
Mileage Since DTC Cleared | -- | km - miles | This parameter displays the mileage that has elapsed since any diagnostic trouble code (DTC) has been cleared from the control modules memory. | ||||||||||||
Mileage Since DTC First Failure | -- | km - miles | This parameter displays the mileage that has elapsed since the first emission failure. | ||||||||||||
Mileage Since DTC Last Failure | -- | km - miles | This parameter displays the mileage that has elapsed since the last emission failure. | ||||||||||||
Mileage Since MIL Requested | -- | km - miles | This parameter displays the mileage that has elapsed since the control module has commanded the malfunction indicator lamp (MIL) On. | ||||||||||||
Misfire Current Cyl. 1-6 | -- | 0 | The scan tool displays a range of 0-255 counts. This parameter displays the number of misfires that have been detected during the last 255 cylinder firing events. The counters may normally display some activity, but the activity should be nearly equal for all of the cylinders, and in low numbers. | ||||||||||||
Misfire History Cyl. 1-6 | -- | 0 | The scan tool displays a range of 0-65,535 counts. The misfire history counters display 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 DTC P0300 has become active. The misfire history counters will update every 255 cylinder firing events. | ||||||||||||
Moderate Brake Apply Signal | Brake pedal not actuated | Released | This parameter displays the state of the brake pedal that is transmitted over the serial data circuit from the electronic brake control module (EBCM). | ||||||||||||
Brake pedal fully actuated | Applied | ||||||||||||||
PNP Switch | Transmission in Park/Neutral | Park/Neutral | This parameter displays whether the transmission range selector is in park/neutral or in gear. | ||||||||||||
Transmission not in Park/Neutral | In Gear | ||||||||||||||
Post Inj. Cyl. 1-6 Command | -- | 0 ms | This parameter displays the amount of fuel injector ON time or pulse width as commanded by the control module for catalyst heating. | ||||||||||||
Power Enrichment | -- | Inactive | This parameter displays the status of the operating mode of the control module used to increase fuel delivery during certain acceleration conditions. | ||||||||||||
Reduced Engine Power | -- | Inactive | This parameter displays Active if the control module is commanding reduced engine power due to a throttle actuator control (TAC) system condition. | ||||||||||||
RVS Disable 1-8 History | -- | Reason for RVS Disable | These parameters displays the last eight reasons the control module disabled remote vehicle start (RVS). | ||||||||||||
Short Term FT Bank 1 or Bank 2 | -- | -5% to +5% | This parameter displays the short-term correction to the fuel delivery by the control module in response to oxygen sensor 1 or 2. If the oxygen sensor indicates a lean air/fuel mixture, the control module will add fuel increasing the short term fuel trim above 0. If the oxygen sensor indicates a rich air/fuel mixture, the control module will reduce fuel decreasing the short term fuel trim below 0. | ||||||||||||
Spark | -- | 2-10 Degrees | 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. | ||||||||||||
Starter Relay Ckt Short Gnd Test Status | -- | OK/Not Run | This parameter displays the state of the starter relay control circuit. The parameter displays Fault if the starter relay control circuit is shorted to ground. This parameter may not change if the scan tool is used to command the relay control circuit ON. | ||||||||||||
Starter Relay Ckt Open Test Status | -- | OK/Not Run | This parameter displays the state of the starter relay control circuit. The parameter displays Fault if the starter relay control circuit is open. This parameter may not change if the scan tool is used to command the relay control circuit ON. | ||||||||||||
Starter Relay Ckt Short Volts Test Status | -- | OK/Not Run | This parameter displays the state of the starter relay control circuit. The parameter displays Fault if the starter relay control circuit is shorted to voltage. This parameter may not change if the scan tool is used to command the relay control circuit ON. | ||||||||||||
Starter Relay Command | Ignition switch not in the crank position | Off | This parameter indicates whether the control module is commanding the starter relay to go on or off. | ||||||||||||
Ignition switch in the crank position | On | ||||||||||||||
Start Up ECT | -- | -39° to +140°C (-38° to +284°F) | This parameter displays the temperature of the engine coolant on start up based on input to the control module from the ECT sensor. | ||||||||||||
Start Up IAT | -- | -39° to +140°C (-38° to +284°F) | This parameter displays the temperature of the intake air at start in the air induction system based on input to the control module from the IAT sensor. | ||||||||||||
Stoplamp Pedal Switch | Brake pedal not actuated | Released | This parameter displays the position of the stop lamp pedal switch input to the control module. | ||||||||||||
Brake pedal fully actuated | Applied | ||||||||||||||
System Power Mode | -- | Run | This parameter displays the position of the ignition switch. The scan tool will display the following:
| ||||||||||||
TAC Forced Engine Shutdown | -- | No | This parameter indicates the status of the TAC motor by the control module. The scan tool will display Yes if the engine has been shut down due to a throttle control fault. | ||||||||||||
TAC Motor | -- | Enabled | This parameter indicates the status of the throttle actuator control (TAC) motor driver in the control module. The scan tool will display Enabled if TAC motor operation is allowed. The scan tool will display Disabled if the control module detects a condition that affects TAC motor operation. | ||||||||||||
TAC System Learned Counts | -- | 0-11 | This parameter displays the steps counted in learning the throttle actuator control parameters. The last step learned is 11. | ||||||||||||
TCC Status | -- | Unlocked | This parameter displays the commanded status of the torque convertor clutch. | ||||||||||||
TCM Requested Torque | -- | N·m/lb ft | This parameter displays the calculated amount torque requested of the controller. | ||||||||||||
TCM Torque Increase | -- | No | This parameter displays whether or not the controller has responded to a request for a torque increase. | ||||||||||||
TCS Torque Increase | -- | No | This parameter displays whether or not the controller has responded to a request for a torque increase. | ||||||||||||
TCS Torque Reduction Active | -- | No | This parameter displays whether the transmission control module (TCM) is reducing torque. | ||||||||||||
TCM Torque Reduction Active | -- | No | This parameter displays whether EBTCM has determined a reduction in torque took place. | ||||||||||||
TCS Torque Delivered Signal | -- | 0-100% | This is the calculated torque output from the engine to the transmission used by the EBTCM for the traction control system operation. | ||||||||||||
TCS Torque Request Signal | -- | 0-100% | The EBTCM sends a Desired Torque Level signal request to the control module. This decreases torque from the powertrain in order to reduce wheel slip during acceleration for the traction control. | ||||||||||||
Total Fuel Trim Avg. Bank 1 or Bank 2 | -- | -100 to +100% | This parameter displays the overall fuel trim from the Long Term idle/decel parameter and the Long Term Fuel Trim cell. | ||||||||||||
Total Knock Retard | -- | 0° | This parameter displays how much ignition spark timing is being retarded due to all control systems monitored by the control module. | ||||||||||||
Total Misfire Count | -- | 0 | This parameter displays the total number of cylinder firing events that the control module detected as misfires for the last 200 crankshaft revolution sample period. | ||||||||||||
TP Desired Angle | -- | 0-100% | This parameter displays the desired TP angle commanded by the control module. | ||||||||||||
TP Indicated Angle | -- | 0-100% | This parameter displays the percent of throttle opening as calculated by the control module using the inputs from TP sensors 1 and 2. | ||||||||||||
TP Sensor 1 | -- | 3.7-4.3 Volts | This parameter displays the actual voltage on the TP sensor 1 signal circuit as measured by the control module. | ||||||||||||
TP Sensor 1 Learned Minimum | -- | 4.1-4.7 Volts | This parameter displays the learned minimum value of throttle position (TP) sensor 1 as recorded by the control module during the last learn procedure. | ||||||||||||
TP Sensor 2 | -- | 0.7-1.1 Volts | This parameter displays the actual voltage on the TP sensor 2 signal circuit as measured by the control module. | ||||||||||||
TP Sensor 2 Learned Minimum | -- | 0.5-0.9 Volts | This parameter displays the learned minimum value of TP sensor 2 as recorded by the control module during the last learn procedure. | ||||||||||||
TP Sensors 1 and 2 | -- | Agree | This parameter displays Disagree when the control module detects that TP sensor 1 voltage signal is not within the correct relationship to TP sensor 2. The scan tool displays Agree under the normal operating conditions. | ||||||||||||
Traction Control Status | -- | Inactive | This parameter displays Active if the electronic brake and traction control module (EBTCM) is commanding traction control. | ||||||||||||
Trans. Output Speed Signal | -- | 0 RPM | This parameter contains the Replicated Transmission Output Speed (Replicated TOS) received from the Transmission Control Module. Replicated TOS results from hardware in the TCM that re-transmits the Transmission Output Speed Sensor pulses to the ECM. | ||||||||||||
Vehicle Security Status | -- | Fuel Continued | This parameter displays the status of the vehicle theft deterrent system. | ||||||||||||
Vehicle Speed Sensor | -- | Km/h mph | This parameter displays the speed of the vehicle as calculated by the transmission control module (TCM) from information received from the vehicle speed sensor (VSS). | ||||||||||||
Volumetric Efficiency | Engine Idling | 5-25% | This parameter displays the calculated volumetric efficiency of the engine as calculated by the control module. | ||||||||||||
Engine speed at 2,500 RPM | 5-25% | ||||||||||||||
VTD Auto. Learn Timer | -- | Inactive | This parameter indicates that either the auto learn timer (used in the auto learn procedure to enable VTD password learning) or the seed and key timer (used in the seed and key procedure to enable VTD password learning) is active. | ||||||||||||
VTD Fuel Disable | -- | Inactive | This parameter indicates the VTD system has disabled fuel. | ||||||||||||
VTD Fuel Enabled | -- | YES | This parameter indicates that the VTD system has enabled the fuel system. | ||||||||||||
VTD Fuel Disable Until Ign. Off | -- | NO | This parameter indicates the VTD system has disabled fuel for the remainder of the ignition cycle. | ||||||||||||
VTD Password learned | -- | YES | This indicates learning of the VTD password received from the platform electronics is enabled. VTD password learning is first enabled in assembly plant (prior to the manufacturer’s enable counter being set to zero) may be re-enabled using 1 of 2 procedures. | ||||||||||||
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. | ||||||||||||
Wide Open Throttle | -- | NO | This parameter displays the throttle status commanded by the control module. The scan tool will display YES if the vehicle throttle is commanded to 100 percent. | ||||||||||||
Output Control | Description | ||||||||
|---|---|---|---|---|---|---|---|---|---|
A/C Relay | The engine must be running and the ECM must receive an A/C request from the HVAC control module in order to enable the output control. The ECM de-energizes the A/C compressor clutch relay when OFF is selected. The relay remains de-energized until ON is selected. | ||||||||
Auxiliary Coolant Pump Relay (If Equipped) | This function controls the auxiliary coolant pump relay. The normal commanded state is NONE. When commanded ON/OFF, the control module turns the auxiliary coolant pump relay ON and OFF. The scan tool initiates the test when the following conditions are met:
The system remains in the commanded state until cancelled by the scan tool. | ||||||||
Aux. Vac. Pump (If Equipped) | This function controls the brake booster auxiliary vacuum pump. The normal commanded state is NONE. When commanded ON/OFF, the control module turns the auxiliary vacuum pump ON and OFF. The scan tool initiates the test when the following conditions are met:
The system remains in the commanded state until cancelled by the scan tool. | ||||||||
CMP Actuator Intake/Exhaust Bank 1 or Bank 2 | This function controls the selected camshaft actuator solenoid. 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 system remains in the commanded state until cancelled by the scan tool. | ||||||||
CMP Sol. Intake/Exhaust Bank 1 or Bank 2 | 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 system remains in the commanded state until cancelled by the scan tool. | ||||||||
Cooling Fan Relay 1 | This function activates the cooling fan relay 1. The normal commanded state of the fan relay is NONE. The relay command status can also be monitored on the scan tool data parameter FC Relay 1 Command. The control module allows cooling fan relay control when the following conditions are met:.
| ||||||||
Cooling Fan Relay 2 & 3 | This function activates the cooling fan relay 2 and relay 3. The normal commanded state of the fan relays is NONE. The relay command status can also be monitored on the scan tool data parameter FC Relay 2 and 3 Command. The control module allows cooling fan relay control when the following conditions are met:
| ||||||||
Cooling Fan Relay 1, 2 & 3 | This function activates the cooling fan relay 1, 2 and 3. The normal commanded state of the fan relays is NONE. The relay command status can also be monitored on the scan tool data parameters FC Relay 1 Command and FC Relay 2 and 3 Command. The control module allows cooling fan relay control when the following conditions are met:
| ||||||||
Cylinder Power Balance |
Note: 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:
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 | 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 engine speed will remain in the commanded state until cancelled by the scan tool. | ||||||||
EVAP Purge Solenoid |
Note: The EVAP Purge Solenoid Command parameter may not change states when using this output control. This function controls the evaporative emission (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 |
Note: 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 Vent Solenoid |
Note: 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:
| ||||||||
Fuel Injector Balance Test ( If Available) | 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:
The selected fuel injector can only be flowed/pulsed once per ignition cycle. | ||||||||
Fuel Pressure Control | This function allows control of the fuel rail pressure (FRP) regulator which is integral to the high pressure fuel pump. The system will Increase or Decrease the fuel rail pressure in increments, as commanded within an approximate range of 414-17,237 kPa (60-2500 psi). The scan tool initiates the test when the following conditions are met:
The system remains in the commanded state for about 30 seconds or until cancelled by the scan tool or the ECM detects a vehicle speed. | ||||||||
Fuel Pump Relay (If Equipped) | 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:
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 Enable | This function disables the control modules ability to learn new fuel trim parameters. The commanded states are NONE, ENABLED, DISABLED. The normal commanded state is NONE. The system remains in the commanded state until cancelled by the scan tool. | ||||||||
Fuel Trim Reset | This function is used to reset the learned fuel trim values to their initial values. | ||||||||
Generator L-Terminal | Commands the generator L terminal On and Off. | ||||||||
Idle Learn Reset | This function allows the throttle position and the idle speed to be relearned by the ECM, once the following conditions have been met.
| ||||||||
Idle Spark | Disables and enables idle spark advance with the engine running. | ||||||||
IMT (IMRC) Valve Solenoid (If Equipped) | This function controls the intake manifold tuning valve (IMT) valve 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:
The system remains in the commanded state until cancelled by the scan tool. | ||||||||
Loop Status | 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 | 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. | ||||||||
Oil Life Reset | This output control is used to reset the engine oil life monitor from 0 to 100%. | ||||||||
RVS Disable History Reset | This function clears the remote vehicle start (RVS) disable history. When RESET is selected the reason the control module did not allow RVS in the last 8 attempts is cleared. | ||||||||
Starter Relay (If Available) | Commands the starter relay ON and OFF. | ||||||||
Throttle Blade Control | This function controls the throttle valve in 10 percent increments. The scan tool initiates the test when the following conditions are met:
The system remains in the commanded state until cancelled by the scan tool. |
