The Engine Scan Tool Data List contains all of the engine related parameters that are available on the scan tool. The list is arranged in alphabetical order.
Use the Engine Scan Tool Data List only after verifying the following:
| • | The Diagnostic System Check - Vehicle is completed. |
| • | No diagnostic trouble codes (DTCs) are present. |
| • | The on-board diagnostics are functioning properly. |
Scan tool values from a properly running engine may be used for comparison with the engine you are diagnosing. The Engine Scan Tool Data List represents values that would be seen on a normally running engine.
Important: A scan tool that displays faulty data should not be used. The scan tool problem should be reported to the manufacturer. The use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement.
Only the parameters listed below are referenced in this service manual 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 each term listed. The following is a description of each item listed:
All: The parameter is in all data lists indicated below.ENG: General Engine Data
EE: Evaporative Emissions (EVAP) Data
MF: Misfire
CMP: Camshaft Phaser (CMP) System Data
Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
Engine Idling/Upper Radiator Hose Hot/Closed Throttle/Transmission in Park or Neutral/Closed Loop | |||
AC Clutch | ENG | On/Off | Off |
AC Request Signal | ENG | Yes/No | No |
Auxiliary Intake Air Control Solenoid | ENG | On/Off | On |
Cam Phase Angle Actual | CMP | Degrees | 0° |
Cam Phase Angle Desired | CMP | Degrees | 0° |
Cam Phase Angle Variance | CMP | Degrees | 0° |
Camshaft Phase Solenoid DC | CMP | Percent | 35-45% |
Camshaft Phase Solenoid Command | ENG, MF | Active/Inactive | Active |
Decel Fuel Cutoff | ENG, MF | Active/Inactive | Inactive |
Diagnostic Mode | ENG | Normal/Check | Normal |
ECT Sensor | All | °C (°F) | 80-90°C (176-194°F) |
Engine Load | ENG | Percent | 9-20% |
Engine Speed | All | RPM | 750-850 RPM with M/T |
Engine Speed at Misfire | MF | RPM | 0 RPM |
EVAP Purge Solenoid | EE | On/Off | Off |
EVAP Vacuum Leak Pump | EE | On/Off | Off |
EVAP Vent Solenoid Command | EE | Venting/Not Venting | Venting |
Fuel Pump Relay Command | ENG | On/Off | On |
Fuel Tank Pressure Sensor | ENG, EE | Volts | Varies |
High Electrical Load | ENG, MF | Yes/No | No |
HO2S 1 | ENG, MF | mV | Varies |
HO2S 1 L/R Response Time | ENG | ms | Varies |
HO2S 1 R/L Response Time | ENG | ms | Varies |
HO2S 2 | ENG, MF | mV | Varies |
IAC Motor Command | ENG, MF | Percent | 27-47% |
IAT Sensor | ENG, MF | °C (°F) | Varies with underhood and ambient air temperatures |
Ign. Cycle Counter | ENG | Counts | 0-400 Counts |
Injector 1 Command | ENG, MF | ms | 1.10-2.20 ms |
Load at Misfire | MF | G/Rev | 0.00 G/Rev |
Long Term FT | ENG | Percent | -20% to +20% |
Loop Status | ENG, EE, MF | Open/Closed | Closed |
MAF Sensor | ENG, MF | g/s | 1.50-5.00 g/s |
MIL Command | ENG, MF | On/Off | Off |
Misfire Current Cyl #1 | MF | Counts | 0 |
Misfire Current Cyl #2 | MF | Counts | 0 |
Misfire Current Cyl #3 | MF | Counts | 0 |
Misfire Current Cyl #4 | MF | Counts | 0 |
Number of DTC(s) | ENG, MF | Varies | 0 |
Power Steering Switch | ENG | Normal/High Pressure | Normal, with steering straight ahead |
Secondary Air Injection (AIR) Pump | ENG | On/Off | Off |
Secondary Air Injection (AIR) Solenoid | ENG | On/Off | Off |
Short Term FT | ENG | Percent | -20% to +20% |
Spark | ENG, MF, CMP | Degrees | 4-14° |
Starter Switch | ENG | Released/Cranking | Released |
Total Fuel Trim Average | ENG | Counts | 0.25-0.75 (varies) |
Total Misfire Current Count | MF | Counts | 0 |
TP Sensor | All | Percent | 8-13% |
Vehicle Speed Sensor | All | km/h/mph | 0 km/h / 0 mph |
