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/Indeterminate/Fault | OK |
A/C Relay Command | Eng 1, 2, MF, CH | On/Off | Off |
A/C Request Signal | CH | Yes/No | No |
APP Indicated Angle | Eng 1, 2, CMP, CT, EVAP, HO2S, FT, TAC | 0-100% | 0% |
APP Sensor 1 | TAC | 0.9-4.5 Volts | 1.0 Volt |
APP Sensor 2 | TAC | 0.45-2.25 Volts | 0.5 Volt |
APP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
BARO | Eng 1, 2, CMP, EVAP, HO2S, FT, MF, TAC | 65-104 kPa (8-16 psi) | Varies with altitude |
Calculated ECT - Closed Loop Fuel | 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 | FT, MF | Yes/No | No |
Crank Request Signal | ET | Yes/No | No |
Cruise Control Active | CT, IPC | 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, FT, MF, CT, ET, IPC | P/N/R/1-5 | P/N |
Current Gear Signal | ET | Valid/Invalid | Valid |
Cycles of Misfire Data | MF | Counts | Varies |
Cylinder 1-6 Fuel Injector Circuit Status | ODM | OK/Indeterminate/Fault | OK |
Cylinder 1-6 Knock Retard | Eng 1 | Degree | 0 Degrees |
Decel. Fuel Cutoff | Eng 2, 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 1, 2, EVAP, CMP, EVAP, TAC | 0-7,000 RPM | 650 RPM |
Desired Int. CMP Bank 1 or 2 | CMP | Degree | Varies |
DTC Set This Ignition | Eng 1, CMP, EVAP, FT, HO2S, TAC | Yes/No | No |
EC Ignition Relay Command | Eng 1, TAC, ET | On/Off | On |
EC Ignition Relay Feedback Signal | Eng 1, TAC, ET | 0-25.5 Volts | 12.0-14.5 Volts |
ECM Reset | Eng 1, EVAP, FT | 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 | 0:00:00 | Varies |
Engine Oil Level Switch | CMP, IPC | OK/Low | OK |
Engine Oil Life Remaining | CMP, IPC | 0-100% | Varies |
Engine Oil Pressure Sensor | IPC | OK, Low | OK |
Engine Oil Pressure Sensor | MF, CMP, IPC | kPa/psi | Varies |
Engine Run Time | Eng 1, 2, EVAP, FT, HO2S, MF, TAC, CMP, ODM, CH | 0:00:00 | Varies |
Engine Speed | Eng 1, 2, EVAP, FT, HO2S, MF, TAC, CMP, CH, CT, ET, IPC, FF, FR | RPM | 575-700 RPM |
EVAP Purge Solenoid Circuit Status | ODM | OK/Indeterminate/Fault | OK |
EVAP Purge Solenoid Command | Eng 1, EVAP, FT | 0-100% | Varies |
EVAP Vent Solenoid Circuit Status | ODM | OK/Indeterminate/Fault | OK |
EVAP Vent Solenoid Command | Eng 1, EVAP, FT | Venting/Not Venting | Varies |
Exh. CMP Angle Bank 1 or 2 | CMP | % | Varies |
Exh. CMP Command Bank 1 or 2 | CMP | Degree | Varies |
Exh. CMP Solenoid Bn. 1 or 2 Circuit Status | ODM | OK/Indeterminate/Fault | OK |
FC Relay 1 Circuit Status | ODM | OK/Indeterminate/Fault | OK |
FC Relay 1 Command | Eng 2, CH | ON/OFF | Varies |
FC Relays 2 and 3 Command | Eng 2, CH | ON/OFF | Varies |
FC Relays 2 and 3 Circuit Status | ODM | OK/Indeterminate/Fault | OK |
Fuel Level Sensor | EVAP, IPC | 0-5 Volts | Varies |
Fuel Pump Relay Circuit Status | ODM | OK/Indeterminate/Fault | OK |
Fuel Pump Relay Command | Eng 1, 2 | On/Off | On |
Fuel Tank Level Remaining | Eng 1, EVAP, IPC, MF | Liter/Gallon | Varies |
Fuel Tank Pressure | 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 | Eng 1, EVAP, FT, HO2S | Enabled/Disabled | Enabled |
GEN L-Terminal Signal Command | ET | % | Varies |
Generator F-Terminal Signal | ET | % | Varies |
HO2S 1 | Eng 1, EVAP, FT, HO2S | Lambda | 1.0 Lambda |
HO2S 2 | Eng 1, FT, HO2S | 0-4,998 mV | Varies 400-700 mV |
HO2S 1 or 2 Heater Circuit Status | ODM | OK/Indeterminate/Fault | OK |
HO2S 1 or 2 Heater Command | HO2S | 0-99% | 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 |
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 | On/Off | On |
Ignition 1 Signal | Eng 1, 2 EVAP, FT, MF, TAC, CMP, ET, IPC | On/Off | On |
IMRC Circuit Status | ODM | OK/Indeterminate/Fault | OK |
IMRC Solenoid Command | Eng 1 | On/Off | Off |
Injector 1-6 Command | Eng 2, FT, MF | ms | Varies |
Injector PWM Bank 1 or 2 Average | FT, MF | 0-9 ms | 4.6-5.4 ms |
Int. CMP Angle Bank 1 or 2 | CMP | Degrees | Varies |
Int. CMP Bank 1 or 2 Command | CMP | 0-99 % | Varies |
Int. CMP Solenoid Bn. 1 or 2 Circuit Status | ODM | OK/Indeterminate/Fault | OK |
Knock Retard | Eng 1, CH | Degrees | Varies |
KS Signal Bank 1 or 2 | Eng 1 | Volts | Varies |
Loop Status Sensor 1 | Eng 1, 2, EVAP, FT, HO2S, FF, FR | Open Loop/Closed Loop | Closed Loop |
Loop Status Sensor 2 | Eng 1, 2, EVAP, FT, HO2S | Open Loop/Closed Loop | Open Loop |
LT FT Cruise/Accel. | Eng 1, 2, EVAP, FT, HO2S, FF, FR | -100% to +100% | 0% |
LT FT Idle/Decel. | Eng 1, 2, EVAP, FT, HO2S | -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/Indeterminate/Fault | OK |
MIL Command | Eng 1, IPC | On/Off | Off |
Mileage Since DTC Cleared | Eng 2 | km - miles | Varies |
Misfire Current Cyl. 1-6 | MF | 0-255 Counts | 0 |
Misfire History Cyl. 1-6 | MF | 0-65,535 Counts | 0 |
PNP Switch | Eng 2, ET | P/N/1-5 | P/N |
Power Enrichment | Eng 2, FT, HO2S, MF | Active/Inactive | Inactive |
Reduced Engine Power | Eng 1, 2, TAC, IPC | Active/Inactive | Inactive |
Short Term FT | Eng 1, 2, EVAP, FT, HO2S | -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/Indeterminate/Fault | OK |
Starter Relay Command | ET | On/Off | Off |
Start Up ECT | Eng 2, EVAP, FT, HO2S, CH | -39° to +140°C (-38° to +284°F) | Varies |
Start Up IAT | Eng 2, EVAP, FT, HO2S, CH | -39° to +140°C (-38° to +284°F) | Varies |
Stoplamp Pedal Switch | Eng 1, CT, TAC | Applied/Released | Released |
System Power Mode | Eng 2, EVAP, TAC, ET | Off, Accessory, Run, or Crank Request | Run |
TAC System Learned Counts | TAC | 0-11 Counts | 0 |
TCC Brake Pedal Switch | CT | Applied/Released | Released |
Torque Delivered Signal | FT, TAC, CT | % | Varies |
Torque Request Signal | FT, TAC, CT | % | 90-98% |
Total Fuel Trim Average | EVAP, FT, HO2S | % | Varies |
Total Misfire Count | MF | Counts | 0 |
TP Desired Angle | Eng 1, 2, EVAP, TAC, CT | 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 | 0-5 Volts | 0.5-0.8 Volts |
TP 1 Learned Minimum | TAC | 0-5 Volts | 0-0.6 Volts |
TP Sensor 2 | TAC | 0-5 Volts | 4.7-4.1 Volts |
TP 2 Learned Minimum | TAC | 0-5 Volts | 5-3.7 Volts |
TP Sensor 1 and 2 | TAC | Agree/Disagree | Agree |
Traction Control Status | TAC, CT | Active/Inactive | Inactive |
Transmission Gear Selector Signal | Eng 2 | Valid/Invalid | Valid |
TWC Temperature Calculated | FT, MF | 370-1,095°C (700-2,000°F) | 370-485°C (700-900°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 Continue |
Vehicle Speed | 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 | % | 5-25% - Idle and at 2500 RPM |
