Transmission Control Module (TCM) Initial Learning

Transmission Control Module (TCM) Initial Learning





NOTICE: Do not raise the Transmission Fluid Temperature (TFT) by stalling the engine, internal transaxle damage will occur.

NOTE: Clear all DTCs first.

NOTE: When installing a new transmission, Transmission Control Module (TCM) or reflashing the TCM, the initialized learned values will need to be carried out.

NOTE: This procedure cannot be carried out if the transmission fluid is not within the correct temperature specification.

1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to Jacking and Lifting Service and Repair.

2. Install the scan tool.

3. Monitor and note the engagement and shift harshness.

4. With the engine idling, monitor the Transmission Fluid Temperature (TFT). The TFT should be between 66°C-110°C (151°F-230°F).

5. With a foot on the brake, move the selector lever to NEUTRAL and hold for 3 seconds. Then move the selector lever to DRIVE and hold for 3 seconds. Carry this out 5 times. Then move the selector lever to PARK.

6. With a foot on the brake, move the selector lever to NEUTRAL and hold for 3 seconds. Then move the selector lever to REVERSE and hold for 3 seconds. Carry this out 5 times. Then move the selector lever to PARK.

7. Drive the vehicle and monitor the scan tool.

8. Drive the vehicle with the throttle opening between 20-25%. Drive until the vehicle reaches 6th gear, not to exceed 80 km/h (50 mph). Then release the accelerator and coast to a stop within 60 seconds. Carry this out 10 times.

9. If engagements and/or shifts are harsh, repeat Steps 4 through 8 one more time.