Pinion Factor Setting

PINION FACTOR SETTING

NOTE: This procedure must be performed if the PCM/TCM has been replaced with a NEW or replacement unit. Failure to perform this procedure will result in an inoperative or improperly calibrated speedometer.

The vehicle speed readings for the speedometer are taken from the output speed sensor. The PCM/TCM must be calibrated to the different combinations of equipment (final drive and tires) available. Pinion Factor allows the technician to set the Powertrain/ Transmission Control Module initial setting so that the speedometer readings will be correct. To properly read and/or reset the Pinion Factor, it is necessary to use a DRBIII(R) scan tool.
1. Plug the DRBIII(R) scan tool into the diagnostic connector located under the instrument panel.
2. Select the Transmission menu.
3. Select the Miscellaneous menu.
4. Select Pinion Factor. Then follow the instructions on the DRBIII(R) scan tool screen.

QUICK LEARN PROCEDURE
The quick learn procedure requires the use of the DRBIII(R) scan tool. This program allows the electronic transaxle system to recalibrate itself. This will provide the best possible transaxle operation.

NOTE: The quick learn procedure should be performed if any of the following procedures are performed:
- Transaxle Assembly Replacement
- Transmission Control Module Replacement
- Powertrain Control Module Replacement (NGC-Equipped Models)
- Solenoid/Pressure Switch Assembly Replacement
- Clutch Plate and/or Seal Replacement
- Valve Body Replacement or Recondition To perform the Quick Learn Procedure, the following conditions must be met:
- The brakes must be applied
- The engine speed must be above 500 rpm
- The throttle angle (TPS) must be less than 3 degrees
- The shift lever position must stay until prompted to shift to overdrive
- The shift lever position must stay in overdrive after the Shift to Overdrive prompt until the DRBIII(R) indicates the procedure is complete
- The calculated oil temperature must be above 60° and below 200°
1. Plug the DRBIII(R) scan tool into the diagnostic connector. The connector is located under the instrument panel.
2. Go to the Transmission screen.
3. Go to the Miscellaneous screen.
4. Select Quick Learn Procedure. Follow the instructions of the DRBIII(R) to perform the Quick Learn Procedure.