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.

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.