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 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 Engine Controls Diagnostic Check is completed. |
| • | No diagnostic trouble codes (DTCs) |
| • | On-board diagnostics are functioning properly. |
Scan tool values from a properly running engine may be used for comparison with the engine that you are diagnosing. The Engine Scan Tool Data List represents values that would be seen on a normal running engine.
Important: A scan tool that displays faulty data should not be used. The scan tool problem 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. If all values are within the typical range described below, refer to Symptoms - Engine Controls for diagnosis.
The column labeled Data List indicates where a parameter can be located on the scan tool. Refer to the scan tool operating manual for the exact locations of the data lists. The following is a description of each term listed:
All: The parameter is in all of the data lists indicated below.Eng 1: Engine Data 1 List
Eng 2: Engine Data 2 List
EGR: Exhaust Gas Recirculation (EGR) Data
FF/FR: Freeze Frame/Failure Records
FT: Fuel Trim Data List
HO2S: HO2S Data List
MF: Misfire Data List
TAC: Throttle Actuator Control (TAC) Data
Scan Tool Parameter | Data List | Parameter Range/Units | Typical Data Values |
|---|---|---|---|
Engine Idling/Radiator Hose Hot/Closed Throttle/Park or Neutral/Closed Loop/Accessories Off | |||
A/C Clutch Feedback Signal | Eng 2 | Relay ON/Relay OFF | Relay OFF |
A/C Compressor Cycling Switch | Eng 2 | Low Pressure/Normal | Normal |
A/C Relay Command | Eng 1, Eng 2, EGR, MF | ON/OFF | OFF |
A/C Request Signal | Eng 2 | Yes/No | No |
APP Average | TAC | Counts | Varies |
APP Indicated Angle | Eng 1, Eng 2, EGR, FT, HO2S, TAC, CC | 0-100% | 0% |
APP Sensor 1 | TAC | 0-100% | 0% |
APP Sensor 1 | TAC | 0-5 V | 0.4-0.9 V |
APP Sensor 2 | TAC | 0-100% | 0% |
APP Sensor 2 | TAC | 5-0 V | 4.5-4.1 V |
APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
Auxiliary Fan Request-if equipped | Eng 2 | ON/OFF | OFF |
BARO | Eng 1, EGR, FT | kPa | 65-104 kPa varies w/altitude |
CMP Sensor-High to Low | Eng 2 | Counts | Varies |
CMP Sensor-Low to High | Eng 2 | Counts | Varies |
Cold Startup | Eng 2 | Yes/No | Varies |
Coolant Level Switch | Eng 2 | OK/Low | OK |
Crank Request Signal | Eng 1 | Yes/No | No |
Cruise Control Active | Eng 1, TAC, CC | Yes/No | No |
Cruise Disengage 1-8 History | CC | Varies | Varies |
Cruise On/Off Switch | TAC, CC | ON/OFF | OFF |
Cruise Release Brake Pedal Switch | CC | Applied/Released | Released |
Cruise Resume/Accel Switch | TAC, CC | ON/OFF | OFF |
Cruise Set/Coast Switch | TAC, CC | ON/OFF | OFF |
Current Gear-4 speed only | Eng 1, Eng 2, EGR, FT | 0-4 | 1 |
Cycles of Misfire Data | MF | 0-100 Counts | Varies |
Decel. Fuel Cutoff | HO2S | Active/Inactive | Inactive |
Desired EGR Position | Eng 1, EGR, MF | 0-100% | 0% |
Desired EGR Position | EGR | 0-5 V | Less than 1.3 V |
Desired Idle Speed | Eng 1, Eng 2, TAC, EE, FF/FR | RPM | PCM Controlled |
DTC Set This Ignition | Eng 1, Eng 2, FT, HO2S, CC | Yes/No | No |
ECT Sensor | Eng 1, Eng 2, EGR, FT, HO2S, MF | -39 to +140°C (-38 to +284°F) | 88-105°C (190-221°F) |
EGR Position Sensor | EGR | 0-5 V | Less than 1.3 V |
EGR Position Sensor | MF, EGR, Eng 1 | 0-100% | 0% |
Engine Load | All | 0-100% | 1-4% @ Idle 7-10% @ 2,500 RPM |
Engine Oil Level Switch-if equipped | Eng 2 | OK/Low | OK |
Engine Oil Life Remaining | Eng 2 | 0-100% | Varies |
Engine Oil Pressure Sensor | Eng 2 | 0-5 Volts | 1.25 Volts |
Engine Run Time | All | Hrs, Min, Sec | Varies |
Engine Speed | All | 0-10,000 RPM | 500-700 RPM |
EVAP Purge Solenoid Command | Eng 1, FT | 0-100% | 0-25% |
EVAP Vent Solenoid Command-if equipped | Eng 1, FT | Not Venting/Venting | Venting |
Fuel Level Sensor | EE | 0-5 V | 0.7-2.5 V |
Fuel Level Sensor Rear Tank-if equipped | Eng 1 | 0-5 V | 0.7-2.5 V |
Fuel Tank Level Remaining | EE | Gal/L | Varies |
Fuel Tank Level Remaining | EE | 0-100% | Varies |
Fuel Tank Pressure (FTP) Sensor-if equipped | Eng 1, | -32.7 to +13.96 mm/Hg (-17.4 to +7.5 in/H2O) | Varies |
FTP Sensor-if equipped | EE | 0-5 V | Varies |
Fuel Tank Rated Capacity | EE | 98 L (25.9 Gal) or 128 L (34 Gal) | Varies with fuel tank option |
Fuel Trim Cell | Eng 1, FT | 0-23 | 16, 20 |
Fuel Trim Learn | Eng 1, FT | Enabled/Disabled | Enabled-may toggle |
Generator F Terminal Signal | Eng 2 | % | Varies |
Generator L Terminal Signal Command | Eng 2 | ON/OFF | ON |
HO2S Bank 1 Sensor 1 | Eng 1, FT, HO2S | mV | 10-1,000 mV and Varying |
HO2S Bank 2 Sensor 1 | Eng 1, FT, HO2S | mV | 10-1,000 mV and Varying |
HO2S Heater Bn 1 Sen. 1 | HO2S | amps | 0.72-0.78 amps |
HO2S Heater Bn 2 Sen. 1 | HO2S | amps | 0.72-0.78 amps |
IAT Sensor | Eng 1, Eng 2, EGR, FT, HO2S | -39 to +140°C (-38 to +284°F) | Depends on ambient temperature |
Ignition 1 Signal | Eng 1, Eng 2, EGR, CC, FT, TAC | 0-25.5 V | 11.5-14.5 V |
Inj. PWM Bank 1 Average | Eng 2, FT, MF | ms | 2-6 ms |
Inj. PWM Bank 2 Average | Eng 2, FT, MF | ms | 2-6 ms |
Knock Retard | Eng 1, EGR | 0-16° | 0° |
Long Term FT Avg. Bn1 | FT | % | Near 0% |
Long Term FT Avg. Bn2 | FT | % | Near 0% |
Long Term FT Bank 1 | Eng 1, Eng 2, FT, HO2S | % | Near 0% |
Long Term FT Bank 2 | Eng 1, Eng 2, FT | % | Near 0% |
Loop Status | Eng 1, Eng 2, EGR, FT, HO2S | Open/Closed | Closed |
Low Oil Lamp Command-if equipped | Eng 2 | ON/OFF | OFF |
MAF Sensor | Eng 1, Eng 2, EGR, FT, HO2S, MF, TAC | 0-665 g/s | 1-9 g/s @ Idle-depends on altitude 15-26 g/s @ 2,500 RPM-depends on altitude |
MAF Sensor | Eng 2 | 0-31,999 Hz | 2,000-3,000 Hz |
MAP Sensor | Eng 1, Eng 2, EGR, FT, HO2S, MF, TAC | 10-105 kPa | 20-48 kPa |
MAP Sensor | Eng 1, Eng 2 | 0-5 V | 1.0-2.0 V Varies with altitude |
MIL Command | Eng 2 | ON/OFF | OFF |
Mileage Since DTC Cleared | Eng 2 | Miles/Km | Varies |
Misfire Current Cyl. 1-8 | MF | 0-255 Counts | 0 |
Misfire History Cyl. 1-8 | MF | 0-65,535 Counts | 0 |
PCM Reset | Eng 1, Eng 2, EGR, FT | Yes/No | No |
PCM/VCM in VTD Fail Enable-if equipped | Eng 1 | Yes/No | No |
PNP Switch-5 speed only | Eng 2, EGR, FT | Park/Neutral/In gear | Varies |
Power Enrichment | Eng 1, Eng 2, HO2S | Yes/No | No |
PTO Enable-if equipped | TAC | Yes/No | No |
Reduced Engine Power | Eng 1, EGR, TAC, CC | Active/Inactive | Inactive |
Short Term FT Avg. Bn1 | FT | % | Near 0% |
Short Term FT Avg. Bn2 | FT | % | Near 0% |
Short Term FT Bank 1 | Eng 1, Eng 2, FT, HO2S | % | Near 0% |
Short Term FT Bank 2 | Eng 1, Eng 2, FT, HO2S | % | Near 0% |
Spark | Eng 1, Eng 2, FT, HO2S, MF | Degrees | 15-20° |
Start Up ECT | Eng 2, FT | °C/°F | Varies |
Stoplamp Pedal Switch | TAC, CC | Applied/Released | Released |
TAC/PCM Communication Signal | Eng 1, TAC, CC | OK/Fault | OK |
TCC Brake Pedal Switch | Eng 1, Eng 2 | Applied/Released | Released |
TCC Enable Solenoid Command-4L80E only | Eng 1, Eng 2, MF, FF/FR | ON/OFF | OFF |
TCC PWM Solenoid Command-4L80E only | Eng 2 | ON/OFF | OFF |
TFP Sw-4L80E only | Eng 2, EGR, FT | Transmission Gear Position | Varies |
TP Desired Angle | Eng 1, Eng 2, EE, EGR, TAC, CC | 0-100% | 3-4.5% |
TP Indicated Angle | All | 0-100% | 3-7% |
TP Sensor 1 | TAC | 0-100% | 3% |
TP Sensor 1 | TAC | 0-5 V | 0.4-0.9 V |
TP Sensor 2 | TAC | 0-100% | 3% |
TP Sensor 2 | TAC | 5-0 V | 4.8-4.3 V |
TP Sensors 1 and 2 | TAC | Agree/Disagree | Agree |
TR Switch (4L80E only) | Eng 2, EGR, FT | Transmission Gear Position | Park |
Vehicle Speed Sensor | All | km/h mph | 0 |
VTD Auto Learn Timer (if equipped) | Eng 1 | Active/Inactive | Inactive |
VTD Fuel Disable (if equipped) | Eng 1 | Active/Inactive | Inactive |
VTD Fuel Disable Until Ign. Off (if equipped) | Eng 1 | Yes/No | No |
Warm-Ups w/o Emission Faults | Eng 2 | 0-255 Counts | Varies |
Warm-Ups w/o Non-Emission Faults | Eng 2 | 0-255 Counts | Varies |
