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 misdiagnosis 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.
The column labeled Data List indicates where a parameter is located on the scan tool. Review 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 data lists indicated below.CH: Cooling/HVAC Data
CMP: CMP Actuator Data
CT: Cruise/Traction Data
Eng: Engine Data
ET: Electrical/Theft Data
EVAP: EVAP Data
FF: Freeze Frame Data
FR: Failure Records
FT: Fuel Trim Data
HO2S: HO2S Data
Ign: Ignition Data
IM: I/M Data
IND: Induction Data
IPC: Instrument Panel Cluster Data
MF: Misfire Data
TAC: TAC Data
Trans: Auto Trans Data
Scan Tool Parameter | Data List | Parameter Range/Units | Typical Data Values |
|---|---|---|---|
Operating Conditions: Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off | |||
5-Volt Reference 1, 2, or 3 Circuit Status | EVAP, IGN, IND, TAC, CH | OK/Fault | OK |
A/C Disengage 1-8 History | Cooling/HVAC | Reason for A/C Disengagement | Varies |
A/C High Side Pressure | Cooling/HVAC | 0-5 Volts | Varies |
A/C High Side Pressure | Cooling/HVAC | kPa/psi | Varies |
A/C Off for WOT | Cooling/HVAC | Yes/No | No |
A/C Pressure Disable | Cooling/HVAC | Yes/No | No |
A/C Relay Circuit Status | Cooling/HVAC | OK/Fault/Indeterminate | OK |
A/C Relay Command | Eng, TAC, CH, IND, MF | On/Off | Off |
A/C Request Signal | Cooling/HVAC | Yes/No | No |
Air Flow Calculated | ENG, EVAP, FT, HO2S, IND, MF, TAC | g/s | -- |
Air Fuel Ratio | ENG, FT, HO2S, IND | 14.7:1 | Varies |
Ambient Air Temperature | ENG, EVAP | °C/°F | Varies |
APP Indicated Angle | CMP,CT, Eng, ET, EVAP, FT, HO2S, Ign, IND, MF, TAC, Trans | 0-100% | 0% |
APP Sensors | TAC | 0-100% | 0% |
APP Sensor 1 | TAC | 0.9-4.5 Volts | 1 Volt |
APP Sensor 2 | TAC | 0.40-2.25 Volts | 0.4 Volt |
APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
BARO | CMP , Eng, EVAP, FT, HO2S, Ign,IM, IND, Trans | 65-104 kPa (8-16 psi) | Varies with altitude |
BARO | IND | Volts | Varies |
Brake Pedal Signal Status | CT, Eng, ET, TAC, Trans | Valid/Invalid | Valid |
Calculated ECT - Closed Loop Fuel Control | CH | -39 to +40°C (-38 to +104°F) | 40°C (104°F) |
Calculated ECT - Thermostat Diagnosis | CH | -39 to +140°C (-38 to +284°F) | 89°C (192°F) |
Calc. TWC Temp. Bank 1 and 2 Sensor 1 and 2 | FT, MF | Temperature | Varies |
Catalytic Converter Protection Active | FT, HO2S | Yes/No | No |
Catalyst Monitor Complete This Ignition | IM | Yes/No | Varies |
Catalyst Monitor Enabled this Ignition | IM | Yes/No | Varies |
CKP Resync Counter | Ign | Counts | 0 Counts |
CKP Active Counter | Ign | Counts | 0 Counts |
CMP Sensor | CMP, IGN, MF | RPM | Engine idle speed |
Cold Startup | ENG, EVAP, IM | YES/NO | Varies |
Crank Request Signal | ET | Yes/No | No |
Cruise Control Active | ENG, TAC | Active/Inactive | Inactive |
Cruise Control Active | CT, Eng, IPC, TAC, | Yes/No | No |
Cruise Disengage 1-8 History | CT | Reason | Varies |
Cruise Inhibited | CT | Yes/No | No |
Cruise On/Off Switch | CT | On/Off | Off |
Cruise Resume/Accel. Switch | CT | ON/OFF | OFF |
Cruise Set/Coast Switch | CT | ON/OFF | OFF |
Cylinder 1-6 IC Circuit Status | MF | OK/Fault/Indeterminate | OK |
Cylinder 1-6 Injector Circuit Status | MF | OK/Fault/Indeterminate | OK |
Cylinder 1-6 Knock Retard | Ign | Degree | 0 Degrees |
Decel. Fuel Cutoff | Eng, FT, HO2S | Active/Inactive | Inactive |
Desired Exh. CMP Bank 1 or 2 | CMP | Degree | Varies |
Desired Idle Speed | Eng, EVAP, CMP, CT, IND | 0-7,000 RPM | 650 RPM |
Desired Int. CMP Bank 1 or 2 | CMP | Degrees | Varies |
Distance Since DTC Cleared | ENG | Miles/Kilometers | Varies |
DTC Set This Ignition | Eng | Yes/No | No |
EC Ignition Relay Command | Eng, ET,TAC | On/Off | On |
EC Ignition Relay Circuit Status | ET | OK/Fault/Indeterminate | OK |
EC Ignition Relay Feedback Signal | Eng, TAC, ET | 0-25.5 Volts | 12.0-14.5 Volts |
ECM in VTD Fail Enable | ET | Yes/No | No |
ECT Sensor | ALL | -39°C to +140°C (-38°F to +284°F) | Varies |
Engine Load | CH, CMP, Eng, EVAP, FF, FR, FT, ,HO2S, Ign, IND, MF, TAC, Trans | 0-99% | 25-45% - Idle 40-60% - 2500 RPM |
Engine OFF EVAP Test Conditions Met | EVAP | Yes/No | Varies |
Engine Off Time | EVAP, IM | 0:00:00 Seconds | Varies |
Engine Oil Life Remaining | CMP, IPC | % | Varies |
Engine Oil Pressure Sensor | IPC | 1-5 Volts | Varies |
Engine Oil Pressure Sensor | CMP, Eng, ET, IPC, MF, | kPa/psi | Varies |
Engine Oil Temperature Calculated | CH, CMP, IPC | °C (°F) | Varies |
Engine Run Time | Eng, Ign, EVAP, FT, HO2S, IM, MF, TAC, CMP, CH, CT, IND, Trans | 0:00:00 | Varies |
Engine Speed | CH, CMP, CT, Eng, ET, EVAP, FF, FR, FT, ,HO2S, Ign, IND, IPC, MF, TAC, Trans | RPM | 575-700 RPM |
EVAP Fault History | EVAP | Vacuum/Purge Valve Leak/Small Leak/Weak Vacuum/No Test Result | No Test Result |
EVAP Monitor Complete This Ignition | IM | Yes/No | Varies |
EVAP Monitor Enabled This Ignition | IM | Yes/No | Varies |
EVAP Purge Solenoid Circuit Status | EVAP | OK/Fault/Indeterminate | OK |
EVAP Purge Solenoid Command | Eng, EVAP, FT, H02S | 0-100% | Varies |
EVAP Vent Solenoid Circuit Status | EVAP | OK/Fault/Indeterminate | OK |
EVAP Vent Solenoid Command | Eng, EVAP, FT | Venting/Not Venting | Venting |
Exh. CMP Angle Bank 1 or 2 | CMP | Degrees | Varies |
Exh. CMP Bank 1 or Bank 2 Active Counter | CMP, IGN | Counts | Varies |
Exh. CMP Bank 1 or 2 Command | CMP | 0-99% | Varies |
Exh. CMP Angle Bank 1 or 2 Variance | CMP | Degrees | Varies |
Exh. CMP Solenoid Bn. 1 or 2 Circuit Status | CMP | OK/Fault/Indeterminate | OK |
FC Relay 1 Circuit Status | CH | OK/Fault/Indeterminate | OK |
FC Relay 2 and 3 Circuit Status | CH | OK/Fault/Indeterminate | OK |
FC Relay 1 Command | CH | On/Off | Varies |
FC Relay 2 and 3 Command | CH | On/Off | Varies |
Fuel Level Sensor Left Tank (Secondary) Fuel Level Sensor Right Tank (Primary) | EVAP | 0-5 Volts | Varies |
Fuel Pump Relay Circuit Status | Eng | OK/Fault/Indeterminate | OK |
Fuel Pump Relay Command | Eng | On/Off | On |
Fuel Tank Level Remaining | Eng, EVAP, FT, IM, IPC MF, | Liter/Gallon/Percent | Varies |
Fuel Tank Pressure Sensor | Eng, EVAP | in H2O/mm Hg | Varies |
Fuel Tank Pressure Sensor | EVAP | 0-5 Volts | Varies |
Fuel Tank Rated Capacity | EVAP | Liter/Gallon | 19.9 Gallons (75.3 Liters) |
Fuel Trim Learn | FT | Enabled/Disabled | Enabled |
GEN L-Terminal Signal Command | ET | ON/OFF | ON |
Generator F-Terminal Signal | ET | 0-100% | Varies |
HO2S Bank 1 or 2 Sensor 1 | Eng, EVAP, FT, HO2S, IND | 0-1,006 mV | Varies 400-700 mV |
HO2S Bank 1 or 2 Sensor 2 | Eng, EVAP, FT, HO2S, IND | 0-1,006 mV | Varies 400-700 mV |
HO2S Heater Monitor Complete This Ignition | IM | Yes/No | Varies |
HO2S Heater Monitor Enabled This Ignition | IM | Yes/No | Varies |
HO2S Htr. Bn. 1 or 2 Sensor 1 or 2 Circuit Status | H02S | OK/Fault/Indeterminate | OK |
HO2S Bank 1 or 2 Sensor 1 or 2 Heater Command | HO2S | 0-99% | Varies |
HO2S Bank 1 or 2 Sensor 1 or 2 Heater Command | HO2S | ON/OFF | ON |
HO2S/O2S Monitor Complete This Ignition | IM | Yes/No | Varies |
HO2S/O2S Monitor Enabled This Ignition | IM | Yes/No | Varies |
HO2S Sensing Element Bn. 1 or 2 Sensor 1 | HO2S | Ohms | 70-90 Ohms Depends on Temperature |
HO2S Sensing Element Bn. 1 or 2 Sensor 2 | HO2S | Ohms | 20-300 Ohms Depends on Temperature |
IAT Sensor | CH, CMP, Eng, EVAP, FF, FR, FT, HO2S, Ign, IM, IND, MF, TAC,Trans | -39° to +140°C (-38° to +284°F) | Varies |
Ignition Off Time | ENG, EVAP, IM | 0:00:00 | Varies |
Ignition 0 Signal | Eng, ET, Ign, IM, IPC, TAC | On/Off | On |
Ignition 1 Signal | ALL | Volts | B+ |
Ignition 1 Signal | Eng, ET, EVAP | On/Off | On |
IMRC Solenoid Circuit Status | IND | OK/Fault/Indeterminate | OK |
IMRC Solenoid Command | IND | On/Off | Off |
Initial Brake Apply Signal | CT, Eng, ET, IM, TAC, Trans | Applied/Released | Released |
Injector 1-6 Command | FT, MF | ms | Varies |
Injector 1-6 Disabled Due to Misfire | FT, MF | YES/NO | NO |
Int. CMP Angle Bank 1 or 2 | CMP | Degrees | Varies |
Int. CMP Bank 1 or Bank 2 Active Counter | CMP, IGN | Counts | Varies |
Int. CMP Angle Bank 1 or 2 Variance | CMP | Degrees | Varies |
Int. CMP Bank 1 or 2 Command | CMP | 0-99% | Varies |
Int. CMP Solenoid Bn. 1 or 2 Circuit Status | CMP | OK/Fault/Indeterminate | OK |
Knock Detected Cyl. 1-6 | IGN | YES/NO | NO |
Knock Retard | Ign | Degrees | Varies |
KS 1 or 2 Signal | Ign | Volts | Varies |
Long Term FT Bank 1 or Bank 2 | CMP, ENG, EVAP, FT, HO2S | -100 to +100% | 7-9% |
Loop Status Bn 1 or 2 Sen. 1 | Eng, EVAP, FF, FR, FT, HO2S, | Open Loop/Closed Loop | Closed Loop |
Loop Status Bn 1 or 2 Sen. 2 | Eng, EVAP, FF, FR, FT, HO2S, | Open Loop/Closed Loop | Open Loop |
LT FT Bn. 1 or Bn. 2 Idle/Decel. | Eng, EVAP, FT, HO2S | -100% to +100% | 0% |
MAF Performance Test | IND, TAC | OK/Fault | OK |
MAF Sensor | CMP, Eng, EVAP, FF, FR, FT, HO2S, Ign, IND, MF, TAC, Trans | 0-655 g/s | 3.4-6.3 g/s |
MAF Sensor | IND | 0-9999 Hz | 28 Hz |
MIL Circuit Status | Eng, IPC | OK/Fault/Indeterminate | OK |
MIL Command | Eng, IPC, IM | On/Off | Off |
Mil Requested by DTC | CMP, Eng, EVAP, FF, FR, FT, IM, HO2S, Ign, IND, MF, TAC, Trans | Yes/No | No |
Mileage Since DTC First Failure | FF, FR | km - miles | Varies |
Mileage Since DTC Last Failure | FF, FR | km - miles | Varies |
Mileage Since MIL Requested | FF, FR | km - miles | Varies |
Misfire Current Cyl. 1-6 | MF | 0-255 Counts | 0 |
Misfire History Cyl. 1-6 | MF | 0-65,535 Counts | 0 |
Moderate Brake Apply Signal | CT, TAC | Applied/Released | Released |
PNP Switch | Eng | Park/Neutral/In Gear | P/N |
Power Enrichment | Eng, FT, HO2S, MF | Active/Inactive | Inactive |
Reduced Engine Power | TAC | Active/Inactive | Inactive |
RVS Disable 1-8 History | ET | None | Varies |
Short Term FT Bank 1 or Bank 2 | Eng, EVAP, FT, HO2S, FF, FR | -25% to +25% | -3% to +3% |
Spark | Eng, Ign, FT, HO2S, MF, CH, CT, IND, FF, FR | -20 to +40 Degrees | 2-10 Degrees |
Starter Relay Circuit Status | ET | OK/Fault/Indeterminate | OK |
Starter Relay Command | CT, ET | On/Off | Off |
Start Up ECT | CH, EVAP, HO2S, IM | -39° to +140°C (-38° to +284°F) | Varies |
Start Up IAT | CH, EVAP, HO2S, IM | -39° to +140°C (-38° to +284°F) | Varies |
Stoplamp Pedal Switch | CT, ET, IM, TAC | Applied/Released | Released |
System Power Mode | Eng, ET, EVAP, TAC | Off, Accessory, RAP, Run, or Crank Request | Run |
TAC Forced Engine Shutdown | TAC | YES/NO | NO |
TAC Motor | TAC | Enabled/Disabled | Enabled |
TAC System Learned Counts | TAC | 0-11 Counts | 11 |
TCC Status | MF | Locked/Unlocked | Unlocked |
TCM Requested Torque | Trans | N·m/lb ft | Varies |
TCM Torque Increase | CT, TAC, Trans | Yes/No | NO |
TCS Torque Increase | CT, TAC | Yes/No | NO |
TCS Torque Reduction Active | CT, TAC, Trans | Yes/No | NO |
TCM Torque Reduction Active | CT, TAC, Trans | Yes/No | NO |
TCS Torque Delivered Signal | CT, TAC | 0-100% | 0% |
TCS Torque Request Signal | CT, TAC, Trans | 0-100% | 90-98% |
Total Fuel Trim Avg. Bank 1 or Bank 2 | EVAP, FT, HO2S | -100 to +100% | Varies |
Total Knock Retard | IGN, CH | Degrees | 0 |
Total Misfire Count | MF | Counts | 0 |
TP Desired Angle | Eng, EVAP, TAC | 0-100% | Varies |
TP Indicated Angle | CMP, CT, Eng, EVAP, FT, ,FF, FR, HO2S, Ign, IND MF, TAC, Trans | 0-100% | Varies |
TP Performance Test | IND, TAC, FT | Active/Inactive | Inactive |
TP Sensor 1 | TAC | 4.5-5.0 Volts 4.0 | 0.5-4.50 Volts |
TP Sensor 1 Learned Minimum | TAC | 0-5 Volts | 0.5-4.50 Volts |
TP Sensor 2 | TAC | 0-5 Volts | 5.0-1.0 Volts |
TP Sensor 2 Learned Minimum | TAC | 0-5 Volts | 5.0-1.0 Volts |
TP Sensors 1 and 2 | TAC | Agree/Disagree | Agree |
Traction Control Status | TAC, CT | Active/Inactive | Inactive |
Vehicle Speed Sensor | All | Km/h mph | Varies |
Volumetric Efficiency | Eng, Ign, EVAP, FT, HO2S, MF, TAC, CMP, CH, Trans | 0-100% | 5-25% - Idle and at 2,500 RPM |
VTD Auto. Learn Timer | ET | Active/Inactive | Inactive |
VTD Fuel Disable | ET | Active/Inactive | Inactive |
VTD Fuel Enabled | ET | Yes/No | Yes |
VTD Fuel Disable Untill Ign. Off | ET | Yes/No | No |
VTD Password learned | ET | Yes/No | Yes |
Warm Ups Since DTC Cleared | Eng | Counts | Varies |
Wide Open Throttle | TAC | Yes/No | NO |
