The Engine Scan Tool Data List contains all engine related parameters that are available on the scan tool. The list is arranged in the order shown on the scan tool.
Use the Engine Scan Tool Data List only after performing the following inspections:
| • | Powertrain On-Board Diagnostic System Check is completed. |
| • | No Diagnostic Trouble Codes (DTCs) are present. |
| • | 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. 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 service category Symptoms for diagnosis.
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 | |||
Engine Speed | Engine Data | RPM | 750-850 RPM |
Desired Idle Speed | Engine Data | RPM | 800 RPM |
ECT | Engine Data | °C (°F) | 80°C to 90°C (176°F to 194°F) |
IAT | Engine Data | °C (°F) | Varies with underhood and ambient air temperatures |
Engine Load | Engine Data | % | 14-24% |
MAP (Pressure) | Engine Data | kPa | 26 to 51 kPa (varies with barometric pressure and altitude) |
MAP (Voltage) | Engine Data | Volts | 1.32 to 1.90 Volts (varies with barometric pressure and altitude) |
BARO | Engine Data | kPa | 89 to 99 kPa (varies with barometric pressure and altitude) |
MAF | Engine Data | g/s | 2.2 to 3.1 g/s (varies) |
TP Sensor | Engine Data | Volts | 0.72-1.04 Volts |
TP Angle | Engine Data | % | 0% |
IAC Duty Cycle | Engine Data | % | 25-45% |
*Throttle Position Level | Engine Data | Counts | 0 |
Closed Throttle Switch | Engine Data | Idle/Not Idle | Idle |
HO2S 1 | Engine Data | mV | 35 to 950 mV (varies) |
HO2S 2 | Engine Data | mV | 35 to 950 mV (varies) |
Loop Status | Engine Data | Open/Closed | Closed |
HO2S 1 Ready | Engine Data | Yes/No | Yes |
HO2S 2 Ready | Engine Data | Yes/No | Varies |
Short Term FT | Engine Data | % | -25-32 |
Short Term FT | Engine Data | Counts | 128 (varies) |
Long Term FT | Engine Data | % | -16.4-20.8 (varies) |
Long Term FT | Engine Data | Counts | 128 (varies) |
Total Fuel Trim | Engine Data | % | -37.3-58.2% (varies) |
Injector PWM | Engine Data | ms | 2.7-4.3 ms |
Fuel Cutoff Signal | Engine Data | Yes/No | No |
Spark | Engine Data | degrees | 6 - 10° |
Spark Advance Adjust Test Switch | Engine Data | On/Off | Off |
EVAP Duty Cycle | Engine Data | % | 0-100% |
EVAP Vent Solenoid | Engine Data | On/Off | Off (varies with engine coolant temperature) |
EVAP Density Trim | Engine Data | Counts | varies |
Fuel Level | Engine Data | % | varies with fuel amount |
Fuel Tank Pressure | Engine Data | mmHg | varies |
Fuel Tank Pressure Control Solenoid | Engine Data | On/Off | varies |
EGR Sol. Vacuum Valve | Engine Data | On/Off | On |
EGR Bypass Solenoid | Engine Data | On/Off | Off |
Air Conditioning | Engine Data | On/Off | Off |
Fuel Pump | Engine Data | On/Off | On |
Power Steering Switch | Engine Data | On/Off | Off (with steering wheel straight ahead) |
Starter Switch | Engine Data | Release/Cranking | Release |
Battery Voltage | Engine Data | Volts | 14 Volts |
Charging Efficiency | Engine Data | % | varies with electrical load |
*PNP Switch | Engine Data | P-N/R-D-L | P-N |
Vehicle Speed | Engine Data | km/h/MPH | 0 km/h |
*TCC Solenoid | Engine Data | On/Off | Off |
*Monitor TCC Solenoid | Engine Data | On/Off | Off |
*Overdrive Switch | Engine Data | On/Off | varies on selection |
*Mode Select Switch | Engine Data | Normal/Power | varies on selection |
* Automatic Transmission Equipped Vehicles Only | |||
