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 Diagnostic System Check-Engine Controls 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 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
Eng 3: Engine Data 3 List
EE: Enhanced EVAP Data
FT: Fuel Trim Data List
MF: Misfire Data List
TAC: Throttle Actuated Control Data List
CC: Cruise Control Data List
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 Relay Command | Eng 1, 2, 3, MF | On/Off | Off |
A/C Request Signal | Eng 2 | Yes/No | No |
Air Fuel Ratio | Eng 2, 3, FT, FF, FR | Ratio | 14.7:1 |
APP Average | TAC | Counts | Counts |
APP Indicated Angle | Eng 1, 2, EE, FT, TAC, CC | 0-96% | 0% |
APP Sensor 1 | TAC | %/Volts | 0%/1.02 Volts |
APP Sensor 2 | TAC | %/Volts | 0%/4.04 Volts |
APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
BARO | Eng 1, EE, FT, FF, FR | kPa | 65-104 kPa/ Varies w/Altitude |
Cam Phase Angle Actual | Eng 2 | Degrees | 0° |
Cam Phase Angle Desired | Eng 2 | Degrees | 0° |
Cam Phase Angle Variance | Eng 2 | Degrees | 0° |
Camshaft Phase Solenoid | Eng 2 | % | Varies |
CKP Active Counter | Eng 2 | 1-250 | 9-250 |
CMP Active Counter | Eng 2 | Counts | Varies |
Crank Request Signal | Eng 3 | Yes/No | No |
Cruise Control Active | Eng 1, 3, TAC, CC | Yes/No | No |
Cruise Disengage 1 History | CC | Varies | Varies |
Cruise Disengage 2 History | CC | Varies | Varies |
Cruise Disengage 3 History | CC | Varies | Varies |
Cruise Disengage 4 History | CC | Varies | Varies |
Cruise Disengage 5 History | CC | Varies | Varies |
Cruise Disengage 6 History | CC | Varies | Varies |
Cruise Disengage 7 History | CC | Varies | Varies |
Cruise Disengage 8 History | CC | Varies | Varies |
Cruise On/Off Switch | TAC, CC | On/Off | Off |
Cruise Release Clutch/TCC Pedal Switches | Eng 1, 2, 3, TAC, CC | Engaged/Released | Released |
Cruise Resume/Accel Switch | TAC, CC | On/Off | Off |
Cruise Set/Coast Switch | TAC, CC | On/Off | Off |
Cycles of Misfire Data | MF | 0-100 Counts | Varies |
Desired Idle Speed | Eng 1, 2, 3, EE, TAC | RPM | PCM Controlled |
ECT Sensor | Eng 1, 2, 3, EE, FT, MF | -40° to -40°C (+151° to +303°F) | 88-105°C (190-221°F) Depends on ambient temperature |
Engine Load | Eng 1, 2, 3, EE, FT, MF, TAC, CC | 0-100% | 23-24% @ Idle 7-42% @ 2500 RPM |
Engine Oil Level Switch | Eng 3 | OK/Low | OK |
Engine Oil Pressure Switch | Eng 3 | OK/Low | OK |
Engine Run Time | All | Hrs, Min, Sec | Varies |
Engine Speed | All | 0-10,000 RPM | 500-700 RPM |
Engine Torque | TAC | N-m/lb ft | 16-24 N-m/11-17 lb ft |
EVAP Purge Solenoid Command | Eng 1, EE, FT | 0-100% | 10-30% |
EVAP Test Abort Reason | EVAP | -- | Lost Enable |
EVAP Test Result | EVAP | -- | No Result |
EVAP Test State | EVAP | -- | Test Complete |
EVAP Vent Solenoid Command | Eng 1, EE, FT | Not Venting/Venting | Venting |
Fuel Tank Pressure Sensor | Eng 1 | mm/Hg / In H2O | Varies |
Fuel Tank Pressure Sensor | EE | mm/Hg / In H2O/Volts | Varies |
Fuel Tank Pressure Sensor | EVAP | mm/Hg/in H20 | -- |
Fuel Trim Cell | Eng 1, EE, FT | 0-23 | 16, 17, 21 |
Fuel Level Sensor | Eng 1 | 0-100 % | Varies |
Fuel Pump Relay Command | Eng 1 | On/Off | On |
Generator F-Terminal Signal | Eng 2 | Percent | Varies |
Generator L-Terminal Signal Command | Eng 2 | ON/OFF | OFF |
HO2S 1 | Eng 1, EE, FT | mV | 10-1,000 mV and Varying |
HO2S 2 | Eng 1, FT | mV | 10-1,000 mV and Varying |
HO2S 1 Heater Current | FT | Amps | Varies |
HO2S 2 Heater Current | FT | Amps | Varies |
IAT Sensor | Eng 1, 2, 3, EE, FT | -40 to +151°C (-40 to +303°F) | Depends on ambient temperature |
Ignition 1 Signal | Eng 1, 2, 3, EE, FT, TAC, CC | 0-25 volts | 11.5-14.5 Volts |
Injector PWM | Eng 2, FT, FF, FR, MF | Milliseconds | 2-6 ms |
Knock Retard | Eng 1 | 0°-16° | 0° |
Long Term FT | Eng 1, 2, 3, EE, FT | % | Near 0% |
Loop Status | Eng 1, 2, 3, EE, FT | Open/Closed | Closed |
MAF Sensor | Eng 1, 2, 3, EE, FT, MF, TAC | g/s | Varies |
MAP Sensor | Eng 1, 2, 3, EE, FT, TAC, MF | kPa | 20-48 kPa |
Medium Resolution Resync Counter | Eng 2 | Counts | 0 |
MIL Command | Eng 1 | Off/On | Off |
Misfire Current Cyl #1 | MF | Varies | 0 |
Misfire Current Cyl #2 | MF | Varies | 0 |
Misfire Current Cyl #3 | MF | Varies | 0 |
Misfire Current Cyl #4 | MF | Varies | 0 |
Misfire History Cyl #1 | MF | Varies | 0 |
Misfire History Cyl #2 | MF | Varies | 0 |
Misfire History Cyl #3 | MF | Varies | 0 |
Misfire History Cyl #4 | MF | Varies | 0 |
Power Enrichment | FT | Active/Inactive | Inactive |
Reduced Engine Power | Eng 1, 3, TAC, CC | Active/Inactive | Inactive |
Reference Voltage 1 Signal | TAC | Volts | 5.03 V |
Reference Voltage 2 Signal | TAC | Volts | 5.03 V |
Short Term FT | Eng 1, 2, 3, EE, FT | % | Near 0% |
Spark | Eng 1, 2, 3, FT, MF | Degrees | 11°-20° |
Start Up ECT | Eng 2, FT | °C/°F | Varies |
Starter Relay Command | Eng 3 | On/Off | Off |
TCC Enable Solenoid Command | Eng 1, MF, CC | ON/OFF | OFF |
Torque Delivered Signal | TAC | ft. lbs. | -- |
Torque Request Signal | TAC | ft. lbs | -- |
TP Desired Angle | Eng 1, 2, EE, TAC, CC | % | 4.2% |
TP Indicated Angle | Eng 1, 2, 3, EE, FT, TAC, MF, CC | % | 4.2% |
TP Sensors 1 and 2 | TAC | Agree/Disagree | Agree |
TP Sensor 1 | TAC | 0-100% | 4% |
TP Sensor 2 | TAC | 0-100% | 4% |
TP Sensor 1 | TAC | 0-5.0 volts | 4.24 volts |
TP Sensor 2 | TAC | 0-5.0 volts | 0.78 volts |
Traction Control Signal | TAC, CC | Active/Inactive | Inactive |
TWC Temperature Calculated | FT | C/F | 350°C |
VCM/PCM in VTD Fail Enable | Eng 3 | Yes/No | No |
Vehicle Speed Sensor | All | km/h mph | 0 |
VTD Fuel Disable | Eng 3 | Active/Inactive | Inactive |
VTD Password | Eng 3 | Fault/OK | OK |
VTD Auto. Learn Timer | Eng 3 | Active/Inactive | Inactive |
VTD Fuel Disable Until Ignition Off | Eng 3 | Yes/No | No |
