Service Procedure

TRANSMISSION HARNESS REPLACEMENT

1. Disconnect battery.

2. Remove transmission connector from Power Train Electronic Controller (PTEC), center pocket.

3. Remove transmission harness (7C078) from retainers along dash panel.

4. Ensure the transmission wiring harness is loosened at the rear of the engine.

5. Attach a length of wire or string to the PTEC connector to assist in pulling/routing of the new transmission wiring harness back up from below the vehicle in repair Steps 14 and 16.

6. Raise vehicle on hoist.

7. Pull the transmission harness down from above leaving the wire/string in place for repair Steps 14 and 16.

8. Remove the old transmission harness from the rest of the transmission.

9. Carefully clean around the solenoid body connector prior to disconnecting to prevent contamination from getting into the connector.

10. Blow out the solenoid body connector to ensure it is dry.

11. Lubricate the 0-rings in the solenoid body connector with dielectric grease to ease assembly.

12. Torque the solenoid body connector screw to 5 Nm (44 lb-in). DO NOT OVERTIGHTEN.

13. Reroute the new harness onto the transmission.

14. Using the previously routed wire/string, attach to the PTEC connector.

15. Lower the vehicle off the hoist.

16. Pull the transmission harness back up from below.





17. Reroute the wiring along the dash panel and attach in the retainers.

18. Reconnect transmission connector to PTEC, center pocket. Torque the PTEC connector screw at 6 N.m (53 lb-in).

19. Raise the vehicle on the hoist to install one (1) pushpin for the harness at the back of the engine that is not accessible at Step 17.

20. Lower the vehicle off the hoist.

21. Reconnect battery.

22. Verify repair.

NOTE
AN ADAPTIVE LEARNING STRATEGY IN THE PCM CONTROLS THE SHIFT FEEL AND TIMING ON THE TRANSMISSION. THIS FEATURE IS DESIGNED TO INCREASE DURABILITY AND PROVIDE CONSISTENT SHIFT FEEL OVER THE LIFE OF THE VEHICLE. AS A RESULT OF THE BATTERY BEING DISCONNECTED, THE TRANSMISSION MAY HAVE FIRM AND/OR SOFT SHIFTS. THIS OPERATION IS CONSIDERED NORMAL AND WILL NOT AFFECT FUNCTION OR DURABILITY OF THE TRANSMISSION. ONCE THE VEHICLE IS AT OPERATING TEMPERATURE IT MAY TAKE SEVERAL SHIFTS AT THE SAME OPERATING CONDITION FOR THE TRANSMISSION TO PROPERLY ADAPT. OVER TIME, THE ADAPTIVE LEARNING PROCESS WILL FULLY UPDATE TRANSMISSION OPERATION. THE MORE VARIED THE DRIVING HABITS, SPEED AND TORQUE, THE LONGER IT MAY TAKE TO ADAPT BUT THE MORE COMPLETE THE PROCESS WILL BE. ADDITIONALLY, THE RESETTING OF KEEP ALIVE MEMORY (KAM) SUCH AS PCM DISCONNECT, BATTERY DISCONNECT, OR INSTALLATION OF A NEW BATTERY, THE STRATEGY MUST RELEARN.