TCM Initialization

When one or more operations as listed below are performed, all learned contents which are stored in the TCM memory should be erased after the operations.

• When the automatic transmission harness wiring is replaced in the vehicle.
• When a used TCU is installed.
• When a vehicle condition is unstable (engine Idle, TPS toggling).

1. Connect the scan tool.
2. Turn the ignition switch to the ON position.
IMPORTANT: Before pushing the Yes button for the TCM initialization on the scan tool, make sure the condition is as follows:
• Vehicle is in Park.
• Engine is at idle.
3. Follow the TCM Learned Initialize procedure on the scan tool.