Scan Tool Data List
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.
- Eng
-
Engine Data
- Ign
-
Ignition Data
- EVAP
-
EVAP Data
- FT
-
Fuel Trim Data
- HO2S
-
HO2S Data
- MF
-
Misfire Data
- TAC
-
TAC Data
- CMP
-
CMP Actuator Data
- CH
-
Cooling/HVAC Data
- CT
-
Cruise/Traction Data
- ET
-
Electrical/Theft Data
- IPC
-
Instrument Panel Cluster Data
- IM
-
I/M Data
- IND
-
Induction Data
- Trans
-
Auto Trans Data
- FF
-
Freeze Frame Data
- FR
-
Failure Records
Scan Tool Data List
| 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 Relay Circuit Status | Cooling/HVAC | OK, Incomplete, Short B+, Short | OK |
| A/C Relay Command | Eng, TAC, CH, IND | On/Off | Off |
| Ambient Air Temperature | Eng, EVAP | °C (°F) | Varies w/outside Temperature |
| APP Indicated Angle | Eng, Ign, EVAP,CMP,CT, HO2S, MF, FT, TAC, IND, Trans | 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 | Eng, Ign, EVAP, HO2S, IM, FT, IND, Trans | 65-104 kPa (8-16 psi) | Varies with altitude |
| BARO | Eng, IND | Volts | Varies |
| Catalytic Converter Protection Active | FT, MF | 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, MF | Counts | 0 Counts |
| Commanded A/F Equivalence Ratio | FT, HO2S, IND | 14.71 | Varies |
| Component Monitor Enable This Ignition | IM | Yes/No | Varies |
| Cruise Control Active | Eng, TAC, CT, IPC | Yes/No | No |
| Cycles of Misfire Data | MF | 0-200 counts | Varies |
| 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 HO2S 1 | HO2S | Lambda | Varies |
| Desired Idle Speed | Eng, EVAP, CMP, TAC, CT, IND | 0-7,000 RPM | 650 RPM |
| Desired Int. CMP Bank 1 or 2 | CMP | Degrees | Varies |
| DTC Set This Ignition | Eng | Yes/No | No |
| EC Ignition Relay Command | Eng, TAC, ET | On/Off | On |
| EC Ignition Relay Feedback Signal | Eng, TAC, ET | 0-25.5 Volts | 12.0-14.5 Volts |
| ECM Reset | Eng, EVAP | Yes/No | No |
| ECT Sensor | Eng, Ign, CMP, EVAP, HO2S, FF, FR, FT, MF, TAC, CH, CT, ET, IPC, IND, Trans | -39°C to +140°C (-38°F to +284°F) | Varies |
| Engine Load | Eng, Ign, CMP, EVAP, HO2S, FF, FR, FT, MF, TAC, CH, IND, 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 Level Switch | Eng, CMP | OK/Low | OK |
| Engine Oil Life Remaining | CMP | % | Varies |
| Engine Oil Pressure Sensor | Eng, MF | 1-5 Volts | Varies |
| Engine Oil Pressure Sensor | MF, CMP | kPa/psi | Varies |
| Engine Oil Temperature Sensor | CMP, CH, 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 | ALL | RPM | 575-700 RPM |
| 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 | Eng, CMP | Degrees | Varies |
| Exh. CMP Angle Bank 1 or 2 Variance | CMP | Degrees | Varies |
| Exh. CMP Bank 1 or 2 Command | CMP | 0-99% | 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 | EVAP | 0-100% | Varies |
| Fuel Level Sensor | 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, IM, MF, FT, CMP, IPC | Liter/Gallon | 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 | 17.8 Gallons (67.3 Liters) |
| Fuel Trim Learn | EVAP, FT, HO2S | Enabled/Disabled | Enabled |
| HO2S 1 | Eng, EVAP, FT, HO2S, IND | Lambda | 1.0 Lambda |
| HO2S 2 | Eng, FT, HO2S | 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 1 or 2 Heater Circuit Status | H02S | OK/Fault/Indeterminate | OK |
| HO2S 1 or 2 Heater Command | HO2S | 0-99% | Varies |
| HO2S/O2S Monitor Complete This Ignition | IM | Yes/No | Varies |
| HO2S/O2S Monitor Enabled This Ignition | IM | Yes/No | Varies |
| HO2S 1 Sensing Element | HO2S | Ohms | 70-90 Ohms Depends on Temperature |
| HO2S 2 Sensing Element | HO2S | Ohms | 20-300 Ohms Depends on Temperature |
| HO2S Sensor 1 Module Signal | HO2S | 1-5 Volts | Varies |
| IAT Sensor | Eng, Ign, EVAP, CMP, FT, FF, FR, HO2S, MF, TAC, CH, IND, Trans | -39° to +140°C (-38° to +284°F) | Varies |
| Ignition 0 Signal | Eng, TAC, ET, IPC | On/Off | On |
| Ignition 1 Signal | Eng, Ign, EVAP, FT, HO2S, CH, CT, ET, IPC, IM, TAC, CMP, IND, Trans | On/Off | On |
| Injector 1-6 Command | FT, MF | ms | Varies |
| Int. Brake Apply Signal | IM | Applied/Released | Released |
| Int. CMP Angle Bank 1 or 2 | CMP | Degrees | 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 Retard | Ing | Degrees | Varies |
| KS 1 or 2 Signal | Ign | Volts | Varies |
| Loop Status Sensor 1 or 2 | Eng, EVAP, FT, HO2S, FF, FR | Open Loop/Closed Loop | Closed Loop |
| LT FT Cruise/Accel. | Eng, EVAP, FT, HO2S | -100% to +100% | 0% |
| LT FT Idle/Decel. | Eng, EVAP, FT, HO2S | -100% to +100% | 0% |
| MAF Sensor | Eng, Ign, EVAP, FT, HO2S, MF, TAC, CMP, FF, FR, IND, Trans | 0-655 g/s | 3.4-6.3 g/s |
| MAF Sensor | IND | 0-5 Volts | 0.9-1.7 Volts |
| MIL Circuit Status | Eng, IPC | OK/Fault/Indeterminate | OK |
| MIL Command | Eng, IPC, IM | On/Off | Off |
| Mil Requested by DTC | Eng, Ign, EVAP, FT, HO2S, TAC, CMP, ET, IND, Trans | Yes/No | No |
| Mileage Since DTC Cleared | Eng, FF, FR | km - miles | Varies |
| 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 | TAC | Applied/Released | Released |
| PNP Switch | Eng | Park/Neutral/In Gear | P/N |
| Power Enrichment | Eng, FT, HO2S, CMP | Active/Inactive | Inactive |
| Reduced Engine Power | TAC | Active/Inactive | Inactive |
| Short Term FT | 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 |
| Start Up ECT | EVAP, HO2S, IM | -39° to +140°C (-38° to +284°F) | Varies |
| Start Up IAT | EVAP, HO2S, IM | -39° to +140°C (-38° to +284°F) | Varies |
| Stoplamp Pedal Switch | TAC, IM | Applied/Released | Released |
| System Power Mode | Eng, EVAP, TAC | Off, Accessory, RAP, Run, or Crank Request | Run |
| TAC System Learned Counts | TAC | 0-11 Counts | 0 |
| TCC Status | MF | Locked/Unlocked | Unlocked |
| TCM Requested Torque | TAC, Trans | N.m/lb ft | Varies |
| TCM Torque Increase | TAC, Trans | Yes/No | Varies |
| TCS Torque Increase | TAC | Yes/No | Varies |
| TCS Torque Reduction Active | TAC, Trans | Yes/No | Varies |
| TCM Torque Reduction Active | TAC, Trans | Yes/No | Varies |
| Torque Delivered Signal | FT, TAC | 0-100% | Varies |
| Torque Request Signal | FT, TAC, Trans | 0-100% | 90-98% |
| Total Fuel Trim Average | EVAP, FT, HO2S | -100 to +100% | Varies |
| Total Misfire Count | MF | Counts | 0 |
| TP Desired Angle | Eng, EVAP, TAC | 0-100% | Varies |
| TP Indicated Angle | Eng, Ign, EVAP, FT, HO2S, MF, TAC, CMP, CT, FF, FR, IND, Trans | 0-100% | Varies |
| TP Sensor 1 | TAC | 0-5 Volts | 0.5-0.8 Volts |
| TP Sensor 1 Learned Minimum | TAC | 0-5 Volts | 0-0.6 Volts |
| TP Sensor 2 | TAC | 0-5 Volts | 4.7-4.1 Volts |
| TP Sensor 2 Learned Minimum | TAC | 0-5 Volts | 5-3.7 Volts |
| TP Sensors 1 and 2 | TAC | Agree/Disagree | Agree |
| Traction Control Status | TAC | Active/Inactive | Inactive |
| TWC Temperature Calculated | FT, MF | Temperature | Varies |
| 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 |
| Warm Ups Since DTC Cleared | Eng | Counts | Varies |