Use the Typical Scan Tool Data Values table under the following conditions:
| • | Powertrain On Board Diagnostic (OBD) System Check - Automatic Transmission has been completed. |
| • | The on-board diagnostics are functioning properly. |
| • | No DTCs are present. |
Important: Do not use a scan tool that displays faulty data. Report the condition to the scan tool manufacturer. The use of a faulty scan tool can result in misdiagnosis and the unnecessary replacement of parts.
Only the parameters listed below are used in this service manual for diagnosing. If a scan tool displays other parameters, the values are not recommended by General Motors for use in diagnosis.
Scan tool values below were recorded under the following conditions:
| • | Engine at idle |
| • | Upper radiator hose is hot |
| • | Closed throttle |
| • | Transmission in Park |
| • | Closed loop operation |
| • | Accessories OFF |
| • | Brake pedal not applied |
Scan Tool Parameter | Data List | Units Displayed | Typical Data Value |
|---|---|---|---|
1-2/3-4 Solenoid | F0, F2 | On/Off | Off |
2-3 Solenoid | F0, F2 | On/Off | On |
Accelerator Pedal Position | F0, F1, F2, F3 | % | 0 |
Band Apply Solenoid | F0, F2 | % | 0 |
Battery Voltage | F0 | Volts | 12.0-14.7 |
Brake Switch | F0, F1 | Applied/Released | Released |
Commanded Gear | F0, F1, F2, F3 | 1-2-3-4 | 1 |
DTC #1 | F0 | Code Number | 0 |
DTC #2 | F0 | Code Number | 0 |
Default Mode | F0 | Active/Inactive | Inactive |
ECT | F0, F1 | °C/°F | 85-115°C (185-239°F) |
Engine Speed | F0, F1, F2, F3 | RPM | 650-800 RPM |
Engine Torque | F0, F1 | N·m/lb ft | 0-13 N·m(lb ft) |
Engine Torque Reduction | F0 | N·m/lb ft | 0 |
MIL Request | F0 | Active/Inactive | Inactive |
Number of DTCs | F0 | 1-20 | 0 |
PC Sol. Actual Current | F0, F3 | Amps | Varies |
PRNDL A | F0 | High/Low | High |
PRNDL B | F0 | High/Low | Low |
PRNDL C | F0 | High/Low | Low |
PRNDL P | F0 | High/Low | High |
Power Relay Status | F0, F2 | On/Off | On |
Shift Pattern Mode | F0, F2 | Economy/Sport | Economy |
Sport Mode Lamp | F0 | On/Off | Off |
Sport Mode Switch | F0 | On/Off | Off |
TCC Slip Speed | F0, F1 | RPM | Varies |
TCC Solenoid | F0 | On/Off | Off |
TCM Torque Red. Req. | F0 | Yes/No | No |
TFT Sensor | F0, F1, F3 | Volts | Approx 2.70 volts |
TP Angle | F0, F1, F3 | % | 0 |
TR Switch P/A/B/C | F0 | On/Off | On/On/Off/Off |
Trans. Fluid Temp | F0, F1, F3 | °C/°F | Approx 81°C (177°F) |
Transmission OSS | F0, F1, F2 | RPM | 0 |
Transmission Range | F0, F2 | Park, Reverse, Neutral, Drive, 3rd, 2nd, 1st | Park |
Vehicle Speed | F0, F1, F2 | km/h/MPH | 0 |
WOT Switch | F0 | On/Off | Off |
Winter Mode Lamp | F0 | On/Off | Off |
Winter Mode Switch | F0 | On/Off | Off |
