Diagnostic Test

CHECK IF TCM IS PROGRAMMABLE 

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

   Were you able to program (flash) the TCM successfully?

   Yes 

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

   No 

   • Using the schematics as a guide, check the Transmission Control Module A (TCMA) connector 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 TCMA in accordance with the Service Information. Refer to VALVE BODY, REMOVAL .
   • Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .