Diagnostic Test

CHECK IF TCM IS CORRECT
1. Flash and reprogram the TCM with the correct software in accordance with the Service Information.
2. Refer to STANDARD PROCEDURE and perform the NAG1 TRANSMISSION VERIFICATION TEST.
  Did the DTC reset after the Verification Test?
  
  Yes
  - Using the schematics as a guide, check the Transmission Control Module (TCM) connectors and terminals for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace and program the TCM in accordance with the Service Information.
  - Refer to STANDARD PROCEDURE and perform the NAG1 TRANSMISSION VERIFICATION TEST.
  No
  - Test Complete.