Transmission Control Module (TCM) Initial Learning
Transmission Control Module (TCM) Initial LearningSpecial Tools:
CAUTION: Do not raise the transmission fluid temperature by stalling the engine, internal transaxle damage will occur.
NOTE: Clear all DTC's 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 speed shock and shift shock on the scan tool.
4. With the engine idling, monitor the transmission fluid temperature. The fluid temperature should be between 66°C-110°C (151°F-230°F).
5. With your foot on the brake, move the shift lever to NEUTRAL and hold for 3 seconds. Then move the shift lever to DRIVE and hold for 3 seconds. Carry this out 5 times. Then move the shift lever to PARK.
6. With your foot on the brake, move the shift lever to NEUTRAL and hold for 3 seconds. Then move the shift lever to REVERSE and hold for 3 seconds. Carry this out 5 times. Then move the shift lever to PARK.
7. Drive the vehicle and monitor the scan tool.
8. Drive the vehicle with the throttle opening between 25-30%. 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. The speed shock and shift shock on the scan tool should have decreased.