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: Engine Data
EGR: EGR Data
EVAP: EVAP Data
FT: Fuel Trim Data
HO2S: O2S/HO2S Data
MF: Misfire Data
CH: Cooling/HVAC 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 | |||
5 Volt Reference 1 | EGR, EVAP, CH | 0-5 Volts | 5.0 Volts |
A/C High Side Pressure Sensor | CH | 0-5 Volts | Varies |
A/C High Side Pressure Sensor | CH | kPa/psi | Varies |
A/C Relay Command | Eng, EGR, MF, CH | On/Off | Off |
A/C Request Signal | CH | Yes/No | No |
Air Flow Calculated | Eng , FT, HO2S, MF, FF, FR | g/s | 3-6 g/s |
Air Fuel Ratio | Eng, FT, HO2S, FF, FR | Ratio | 14.7:1 |
BARO | Eng , EGR, EVAP, HO2S, FT, FF, FR, MF | 65-104 kPa | Varies with altitude |
Catalytic Converter Protection Active | HO2S, FT, MF | Yes/No | No |
CMP Active Counter | Eng, MF | 1-3 Counts | Varies |
Coolant Hot Lamp (If Equipped) | IPC | On/Off | Off |
Decel. Fuel Cutoff | EGR, FT, HO2S | Active/Inactive | Inactive |
Desired EGR Position | EGR | % | Varies |
Desired IAC Position | Eng | Counts | Varies |
Desired Idle Speed | Eng, EVAP, FF, FR | 0-7,000 RPM | 800-950 RPM |
ECT Sensor | Eng , EGR, EVAP, FT, HO2S, MF, CH, IPC, FF, FR | -39°C to +140°C (-38°F to +284°F) | Varies |
EGR Flow Test Count | EGR | Counts | Varies |
EGR Learned Minimum | EGR | Volts | Varies |
EGR Position Sensor | Eng, EGR, FT, MF | % | Varies |
EGR Position Sensor | EGR | Volts | Varies |
EGR Position Variance | EGR | Counts | Varies |
EGR Solenoid Command | EGR | % | Varies |
Engine Load | Eng , EGR, EVAP, FT, HO2S, MF, CH, FF, FR | 0-99% | 25-40% - Idle 25-40% - 2500 RPM |
Engine Run Time | ALL | 0:00:00 | Varies |
Engine Speed | ALL | RPM | 750-950 RPM |
EVAP Purge Solenoid Command (If Equipped) | Eng, EVAP, FT, HO2S | 0-100% | Varies |
EVAP Vent Solenoid Command (If Equipped) | Eng, EVAP | Venting/Not Venting | Venting |
Fail Counter | FF, FR | Counts | Varies |
Fans High Speed | CH | ON/OFF | Varies |
Fans Low Speed | CH | ON/OFF | Varies |
Fuel Level to Cluster | EVAP, IPC | % | Varies |
Fuel Level Sensor | Eng, EVAP, FT, IPC | 0-5 Volts | Varies |
Fuel Level Sensor | Eng, EVAP, FT, IPC | % | Varies |
Fuel Pump Relay Command | Eng, FT | On/Off | On |
Fuel Tank Pressure Sensor (If Equipped) | Eng, EVAP | in H2O/mm Hg | Varies |
Fuel Tank Pressure Sensor (If Equipped) | Eng, EVAP, FF, FR | 0-5 Volts | Varies |
Fuel Trim Cell | Eng, FT, FF, FR | Cell Number | Varies |
Fuel Trim Learn | Eng, FT, FF, FR | Enabled/Disabled | Enabled |
O2S/HO2S 1 | Eng, EVAP, FT, HO2S, FF, FR | 0-1,006 mV | Varies 400-800 mV |
O2S/HO2S 1 Ready | HO2S | Yes/No | Yes |
O2S/HO2S 2 | Eng, EVAP, FT, HO2S, FF, FR | 0-1,006 mV | Varies 400-800 mV |
IAC Position | Eng, EGR, FT, HO2S, CH, FF, FR | Counts | 15-40 Counts |
IAT Sensor | Eng, EGR, EVAP, FT, HO2S, MF, CH, FF, FR | -39° to +140°C (-38° to +284°F) | Varies |
Ignition 1 Signal | Eng, EGR, EVAP, FT, HO2S, MF, CH, IPC | Volts | 12.0-14.5 Volts |
IMT Valve Command (If Equipped) | Eng | On/Off | Off |
Injector PWM | Eng, FT, HO2S, MF, FF, FR | 0-9 ms | 4.6-5.4 ms |
Knock Retard | Eng, EGR, CH | Degrees | Varies |
KS Active Counter | Eng | Counts | Varies |
Long Term FT | Eng, EVAP, FT, HO2S, FT, FF, FR | -100% to +100% | 0% |
Long Term FT Avg. | FT | -100% to +100% | 0% |
Loop Status | Eng, EVAP, FT, HO2S, FF, FR | Open Loop/Closed Loop | Closed Loop |
Low Fuel Lamp Command (If Equipped) | IPC | On/Off | Off |
MAP Sensor | Eng, EGR, EVAP, FT, HO2S, MF, FF, FR | kPa | 38-50 kPa Varies with Altitude |
MAP Sensor | Eng, MF, FF, FR | 0-5 Volts | 0.9-1.7 Volts |
MIL Command | Eng, IPC | On/Off | Off |
Mileage Since First Failure | FF, FR | km - miles | Varies |
Mileage Since Last Failure | FF, FR | km - miles | Varies |
Misfire Current Cyl. 1-4 | MF | 0-255 Counts | 0 |
Misfire History Cyl. 1-4 | MF | 0-65,535 Counts | 0 |
Not Run Counter | FF, FR | Counts | Varies |
Pass Counter | FF, FR | Counts | Varies |
PNP Switch | Eng, EGR, IPC | Park/Neutral/In Gear | Park/Neutral |
Power Enrichment | FT, HO2S, MF, FF, FR | Active/Inactive | Inactive |
Power Steering Switch (If Equipped) | Eng, CH | High Pressure/Normal Pressure | Normal Pressure |
Rich/Lean to Lean/Rich Ratio Sensor 1 | FT, HO2S | Counts | Varies |
Rich/Lean Transition Sensor 1 | FT, HO2S | Counts | Varies |
Rough Road Sensor (If Equipped) | MF | 0-5 Volts | 2-3 Volts |
Short Term FT Avg. | FT | -25% to +25% | -3% to +3% |
Short Term FT | Eng, EVAP, FT, HO2S, FF, FR | -25% to +25% | -3% to +3% |
Spark | Eng, FT, HO2S, MF, CH | -20 to +40 Degrees | 2-10 Degrees |
Start Up ECT | EVAP, HO2S, CH, FF, FR | -39° to +140°C (-38° to +284°F) | Varies |
Start Up IAT | EVAP, HO2S, CH, FF, FR | -39° to +140°C (-38° to +284°F) | Varies |
SVS Lamp Command (If Equipped) | IPC | On/Off | Off |
TCC Enable Solenoid Command (If Equipped) | Eng, MF | On/Off | Off |
Total Fuel Trim Average | EVAP, FT, HO2S | -100 to +100% | Varies |
Total Misfire | MF | Counts | 0 |
TP Sensor | Eng, EGR, EVAP, FT, HO2S, MF, FF, FR | 0-5 Volts | 0.0-0.3 Volts |
TP Sensor | Eng, EGR, EVAP, FT, HO2S, MF, FF, FR | % | 5-15 % |
TWC Temperature Calculated | MF | Temperature | Varies |
Vehicle Security Status (If Equipped) | Eng, IPC | Enabled/Disabled | Disabled |
Vehicle Speed Sensor | Eng, EGR, EVAP, FT, HO2S, MF, CH, IPC, FF, FR | Km/h mph | 0 km/h (0 mph) |
