Diagnostic Test

WARNING: This page is about a different car, the 2015 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

CHECK IF TRANSMISSION CONTROL MODULE (TCM) IS PROGRAMMABLE

With the scan tool, program the TCM with the latest software. Perform the TCM PROGRAMMING PROCEDURE. Refer to 8HP45/845RE TCM PROGRAMMING PROCEDURE .
Were you able to program the TCM successfully?

Yes
- Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .
No
- Using the schematics as a guide, check the Transmission Control Module (TCM) connector and all related in-line connector terminals for corrosion, damage, or pushed out terminals. Pay particular attention to the power and ground circuits. If no problems are found, replace and program the TCM in accordance with the Service Information. Refer to MODULE, TRANSMISSION CONTROL . Refer to MODULE, TRANSMISSION CONTROL, MODULE PROGRAMMING .
- Perform the TRANSMISSION VERIFICATION TEST. Refer to TRANSMISSION VERIFICATION TEST .