Diagnostic Test
- PERFORM TCM REPLACEMENT PROCEDURE NOTE:
Controller is programmed with generic software and will not allow the correct vehicle Powertrain management.
- With the scan tool, perform the TCM replacement procedure.
Were you able to update the controller successfully?
Yes
- Test Complete.
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Using the schematics as a guide, check the Transmission Control Module (TCM) pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the TCM in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL, REMOVAL .
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- With the scan tool, perform the TCM replacement procedure.