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-Engine Controls 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.Eng 1: Engine Data 1
Eng 2: Engine Data 2
EVAP: EVAP Data
FT: Fuel Trim Data
HO2S: HO2S Data
MF: Misfire Data
TAC: TAC Data
CMP: CMP Actuator Data
ODM: ODM Data
CH: Cooling/HVAC Data
CT: Cruise/Traction Data
ET: Electrical/Theft Data
IPC: IPC Data
FF: Freeze Frame Data
FR: Failure Records Data
Scan Tool Parameter | Data List | Parameter Range/Units | Typical Data Values |
|---|---|---|---|
Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off | |||
A/C Disengage 1-8 History | CH | Reason for A/C Disengagement | Varies |
A/C High Side Pressure Sensor | CH | 0-5 Volts | Varies |
A/C OFF for WOT | CH | Yes/No | No |
A/C Pressure Disable | CH | Yes/No | No |
A/C Relay Circuit Status | ODM | OK/Fault/Indeterminate | OK |
A/C Relay Command | Eng 1, 2, MF, FF, FR, CH | On/Off | Off |
A/C Request Signal | CH | Yes/No | No |
APP Indicated Angle | Eng 1, 2, CMP, CT, EVAP, HO2S, FF, FR, FT, TAC | 0-100% | 0% |
APP Sensor 1 | FF, FR, TAC | 0.9-4.5 Volts | 1 Volt |
APP Sensor 2 | FF, FR, TAC | 0.45-2.25 Volts | 0.5 Volt |
APP Sensor 1 and 2 | FF, FR, TAC | Agree/Disagree | Agree |
BARO | Eng 1, 2, CMP, EVAP, FF, FR, HO2S, FT, MF, TAC | 65-104 kPa (8-16 psi) | Varies with altitude |
Brake Pedal Signal Status | CT, TAC | Valid/Invalid | Valid |
Calculated ECT - Closed Loop Fuel Control | Eng 2 | -39°C to +40°C (-38°F to +104°F) | 40°C (104°F) |
Calculated ECT - Thermostat Diagnosis | Eng 2 | -39°C to +140°C (-38°F to +284°F) | 89°C (192°F) |
Catalytic Converter Protection Active | FF, FR, FT, MF | Yes/No | No |
Crank Request Signal | ET | Yes/No | No |
Cruise Control Active | CT, IPC, FF, FR | Yes/No | No |
Cruise Disengage 1-8 History | CT | Reason | Varies |
Cruise Inhibit Reason | CT | Reason | Varies |
Cruise On/Off Switch | CT | On/Off | Off |
Cruise Resume/Accel. Switch | CT | On/Off | Off |
Cruise Set/Coast Switch | CT | On/Off | Off |
Current Gear | Eng 1, 2, FF, FR, FT, MF, CT, ET, IPC | P/N/Reverse/1st-5th | P/N |
Current Gear Signal | ET, FF, FR | Valid/Invalid | Valid |
Cycles of Misfire Data | FF, FR, MF | 0-200 counts | Varies |
Cylinder 1-6 Injector Circuit Status | ODM | OK/Fault/Indeterminate | OK |
Cylinder 1-6 Knock Retard | Eng 1 | Degree | 0 Degrees |
Decel. Fuel Cutoff | Eng 2, FF, FR, FT, HO2S | Active/Inactive | Inactive |
Desired Exh. CMP Bank 1 or 2 | CMP, FF, FR, | Degree | Varies |
Desired HO2S Bank 1 or 2 Sensor 1 | HO2S, FF, FR | Lambda | Varies |
Desired Idle Speed | Eng 1, 2, EVAP, CMP, FF, FR, TAC | 0-7,000 RPM | 650 RPM |
Desired Int. CMP Bank 1 or 2 | CMP, FF, FR, | Degrees | Varies |
DTC Set This Ignition | Eng 1, CMP, EVAP, FT, HO2S, TAC | Yes/No | No |
EC Ignition Relay Command | Eng 1, TAC, ET, FF, FR | On/Off | On |
EC Ignition Relay Feedback Signal | Eng 1, TAC, ET, FF, FR | 0-25.5 Volts | 12.0-14.5 Volts |
ECM Reset | Eng 1, EVAP, FT, FF, FR | Yes/No | No |
ECT Sensor | Eng 1, 2, CMP, EVAP, HO2S, FF, FR, FT, MF, TAC, CH, IPC | -39°C to +140°C (-38°F to +284°F) | Varies |
Engine Load | Eng 1, 2, CMP, EVAP, HO2S, FF, FR, FT, MF, TAC, CH | 0-99% | 0-5% - Idle 3-7% - 2500 RPM |
Engine OFF EVAP Test Conditions Met | EVAP | Yes/No | Varies |
Engine Off Time | EVAP, FF, FR | 0:00:00 Seconds | Varies |
Engine Oil Level Switch | CMP, IPC | OK/Low | OK |
Engine Oil Pressure Sensor | IPC, FF, FR | OK, Low | OK |
Engine Oil Pressure Sensor | MF, CMP, IPC, FF, FR | kPa/psi | Varies |
Engine Run Time | Eng 1, 2, EVAP, FT, HO2S, MF, TAC, CMP, ODM, CH, FF, FR | 0:00:00 | Varies |
Engine Speed | ALL | RPM | 575-700 RPM |
EVAP Purge Solenoid Circuit Status | ODM | OK/Fault/Indeterminate | OK |
|
Important: This parameter may not change states when using the EVAP Purge Solenoid output control. EVAP Purge Solenoid Command | Eng 1, EVAP, FF, FR, FT | 0-100% | Varies |
EVAP Vent Solenoid Circuit Status | ODM | OK/Fault/Indeterminate | OK |
|
Important: This parameter may not change states when using the EVAP Vent Solenoid output control. EVAP Vent Solenoid Command | Eng 1, EVAP, FF, FR, FT | Venting/Not Venting | Varies |
Exh. CMP Angle Bank 1 or 2 | CMP, FF, FR | Degrees | Varies |
Exh. CMP Bank 1 or 2 Command | CMP, FF, FR | 0-99% | Varies |
Exh. CMP Solenoid Bn. 1 or 2 Circuit Status | ODM | OK/Fault/Indeterminate | OK |
Extended Travel Brake Pedal Switch | Eng 1, TAC, CT | Applied/Released | Released |
Fail Counter | FF, FR | Counts | Varies |
FC Relay 1 Circuit Status | ODM | OK/Fault/Indeterminate | OK |
FC Relay 1 Command | Eng 2, CH, FF, FR | ON/OFF | Varies |
|
Important: This parameter may not change from OFF to ON or ON to OFF when using the Fan output control. FC Relays 2 and 3 Command | Eng 2, CH, FF, FR | ON/OFF | Varies |
FC Relays 2 and 3 Circuit Status | ODM | OK/Fault/Indeterminate | OK |
Fuel Level Sensor Left Tank (Secondary) | EVAP, IPC, FF, FR | 0-5 Volts | Varies |
Fuel Level Sensor Right Tank (Primary) | EVAP, IPC, FF, FR | 0-5 Volts | Varies |
Fuel Pump Relay Circuit Status | ODM | OK/Fault/Indeterminate | OK |
|
Important: This parameter may not change from OFF to ON or ON to OFF when using the Fuel Pump output control. Fuel Pump Relay Command | Eng 1, 2, FF, FR | On/Off | On |
Fuel Tank Level Remaining | Eng 1, EVAP, IPC, MF | Liter/Gallon | Varies |
Fuel Tank Pressure Sensor | EVAP, FF, FR | in H2O/mm Hg | Varies |
Fuel Tank Pressure Sensor | EVAP, FF, FR | 0-5 Volts | Varies |
Fuel Tank Rated Capacity | EVAP | Liter/Gallon | 17.8 Gallons (67.3 Liters) |
Fuel Trim Learn | Eng 1, EVAP, FT, HO2S, FF, FR | Enabled/Disabled | Enabled |
GEN L-Terminal Signal Command | ET | 0-100% | Varies |
Generator F-Terminal Signal | ET | 0-100% | Varies |
HO2S Bank 1 or 2 Sensor 1 | Eng 1, EVAP, FT, HO2S, FF, FR | Lambda | 1.0 Lambda |
HO2S Bank 1 or 2 Sensor 2 | Eng 1, FT, HO2S, FF, FR | 0-1,006 mV | Varies 400-700 mV |
HO2S Htr. Bn. 1 or 2 Sensor 1 or 2 Circuit Status | ODM | OK/Fault/Indeterminate | OK |
HO2S Htr. Bn. 1 or 2 Sensor 1 Command | HO2S, FF, FR | 0-99% | Varies |
HO2S Sensing Element Bn. 1 or 2 Sensor 1 | HO2S | Ohms | 70-90 Ohms Depends on Temperature |
IAT Sensor | Eng 1, 2, EVAP, FT, HO2S, TAC, CMP, CH, FF, FR | -39° to +140°C (-38° to +284°F) | Varies |
Ignition 0 Signal | Eng 1, 2 EVAP, TAC, ET, IPC, FF, FR | On/Off | On |
Ignition 1 Signal | Eng 1, 2 EVAP, FT, MF, TAC, CMP, ET, IPC, FF, FR | On/Off | On |
IMRC Solenoid Circuit Status | ODM | OK/Fault/Indeterminate | OK |
|
Important: This parameter may not change from OFF to ON or ON to OFF when using the IMRC Solenoid output control. IMRC Solenoid Command | Eng 1 | On/Off | Off |
Initial Brake Apply Signal | TAC, CT | Applied/Released | Released |
Injector 1-6 Command | Eng 2, FT, MF | ms | Varies |
Injector PWM Bank 1 or 2 Average | FT, MF, FF, FR | 0-9 ms | 4.6-5.4 ms |
Int. CMP Angle Bank 1 or 2 | CMP, FF, FR | Degrees | Varies |
Int. CMP Bank 1 or 2 Command | CMP, FF, FR | 0-99% | Varies |
Int. CMP Solenoid Bn. 1 or 2 Circuit Status | ODM | OK/Fault/Indeterminate | OK |
Knock Retard | Eng 1, CH, FF, FR | Degrees | Varies |
KS 1 or 2 Signal | Eng 1 | Volts | Varies |
Loop Status Bn 1 or 2 Sen. 1 | Eng 1, 2, EVAP, FT, HO2S, FF, FR | Open Loop/Closed Loop | Closed Loop |
Loop Status Bn 1 or 2 Sen. 2 | Eng 1, 2, EVAP, FT, HO2S, FF, FR | Open Loop/Closed Loop | Open Loop |
LT FT Bn. 1 or Bn. 2 Cruise/Accel. | Eng 1, 2, EVAP, FT, HO2S, FF, FR | -100% to +100% | 0% |
LT FT Bn. 1 or Bn. 2 Idle/Decel. | Eng 1, 2, EVAP, FT, HO2S, FF, FR | -100% to +100% | 0% |
MAF Sensor | Eng 1, 2, FT, HO2S, MF, TAC, CMP, FF, FR | 0-655 g/s | 3.4-6.3 g/s |
MAF Sensor | Eng 2, EVAP, FT, HO2S, MF, TAC, CMP, FF, FR | 0-5 Volts | 0.9-1.7 Volts |
MIL Circuit Status | ODM | OK/Fault/Indeterminate | OK |
|
Important: This parameter may not change from OFF to ON or ON to OFF when using the MIL output control. MIL Command | Eng 1, IPC | On/Off | Off |
Mileage Since DTC Cleared | Eng 2, FF, FR | km - miles | Varies |
Mileage Since First Failure | FF, FR | km - miles | Varies |
Mileage Since 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 |
Moderate Brake Apply Signal | TAC, CT | Applied/Released | Released |
Not Run Counter | FF, FR | Counts | Varies |
Pass Counter | FF, FR | Counts | Varies |
PNP Switch | Eng 2, ET, FF, FR | Park/Neutral/In Gear | P/N |
Power Enrichment | Eng 2, FT, HO2S, MF, FF, FR | Active/Inactive | Inactive |
Reduced Engine Power | Eng 1, 2, TAC, IPC, FF, FR | Active/Inactive | Inactive |
Short Term FT Bank 1 or Bank 2 | Eng 1, 2, EVAP, FT, HO2S, FF, FR | -25% to +25% | -3% to +3% |
Spark | Eng 1, 2, FT, HO2S, MF, CH, CT, FF, FR | -20 to +40 Degrees | 2-10 Degrees |
Starter Relay Circuit Status | ODM | OK/Fault/Indeterminate | OK |
|
Important: This parameter may not change from OFF to ON or ON to OFF when using the Starter Relay output control. Starter Relay Command | ET | On/Off | Off |
Start Up ECT | Eng 2, EVAP, FT, HO2S, CH, FF, FR | -39° to +140°C (-38° to +284°F) | Varies |
Start Up IAT | Eng 2, EVAP, FT, HO2S, CH, FF, FR | -39° to +140°C (-38° to +284°F) | Varies |
Stoplamp Pedal Switch | Eng 1, CT, TAC, FF, FR | Applied/Released | Released |
System Power Mode | Eng 2, EVAP, TAC, ET, FF, FR | Off, Accessory, RAP, Run, or Crank Request | Run |
TAC System Learned Counts | TAC | 0-11 Counts | 0 |
Torque Delivered Signal | FT, TAC, CT, FF, FR | 0-100% | Varies |
Torque Request Signal | FT, TAC, CT, FF, FR | 0-100% | 90-98% |
Total Fuel Trim Avg. Bank 1 or Bank 2 | EVAP, FT, HO2S, FF, FR | -100 to +100% | Varies |
Total Misfire Count | MF, FF, FR | Counts | 0 |
TP Desired Angle | Eng 1, 2, EVAP, TAC, CT, FF, FR | 0-100% | Varies |
TP Indicated Angle | Eng 1, 2, EVAP, FT, HO2S, MF, TAC, CMP, CT, FF, FR | 0-100% | Varies |
TP Sensor 1 | TAC, FF, FR | 0-5 Volts | 0.5-0.8 Volts |
TP Sensor 1 Learned Minimum | TAC, FF, FR | 0-5 Volts | 0-0.6 Volts |
TP Sensor 2 | TAC, FF, FR | 0-5 Volts | 4.7-4.1 Volts |
TP Sensor 2 Learned Minimum | TAC, FF, FR | 0-5 Volts | 5-3.7 Volts |
TP Sensors 1 and 2 | TAC, FF, FR | Agree/Disagree | Agree |
Traction Control Status | TAC, CT, FF, FR | Active/Inactive | Inactive |
Transmission Gear Selector Signal | Eng 2 | Valid/Invalid | Valid |
TWC Temperature Calculated Bank 1 or Bank 2 | FT, MF, FF, FR | 316-1,095°C (600-2,000°F) | 316-485°C (600-900°F) |
Vehicle Security Status | Eng 2, ET, IPC | Password Learning, VTD Fail-Enable, Auto Learn Timer, Fuel Disable Until Ign Off, Fuel Disable Timeout, and Fuel Continue | Fuel Continued |
Vehicle Speed Sensor | Eng 1, 2, EVAP, FT, HO2S, MF, TAC, CMP, CH, CT, IPC, FF, FR | Km/h mph | Varies |
Volumetric Efficiency | Eng 1, 2, EVAP, FT, HO2S, MF, TAC, CMP, CH, FF, FR | 0-100% | 5-25% - Idle and at 2500 RPM |
