Diagnostic Test

CHECK IF TCM IS FLASHABLE 

1. With the scan tool, record the vehicles controller part number.
2. Select Use Controller Part Number under the Flash Tab.
3. Flash the controller with the correct software.

   Were you able to update (flash) the controller successfully?

   Yes 

   • Test Complete.
   • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .

   No 

   NOTE:

   If this Electronic Control Unit (ECU) is being replaced with a new unit, a diagnostic scan tool MUST be used to align the PROXI configuration data into the new ECU. Follow the routine outlined in the diagnostic scan tool for PROXI Configuration Alignment under Body Control Module (BCM) Miscellaneous Functions menu.

   • Using the schematics as a guide, check the Transmission Control Module (TCM) terminals and connectors for corrosion, damage or pushed out terminals. Pay particular attention to the power and ground circuits. If no problems are found, replace the TCM and perform programming and PROXI Configuration Alignment procedures. Refer to MODULE, TRANSMISSION CONTROL, REMOVAL .
   • Perform the TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .