Diagnostic Test
- CHECK FOR TIPM/FCM CAN BUS DTCS
- With the scan tool, read TIPM/FCM DTCs.
Are there any TIPM/FCM CAN BUS DTCS present?
Yes
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
No
- Using the schematics as a guide, check the Transmission Control Module (TCM) terminals 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.
- Perform the NAG1 TRANSMISSION VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
- With the scan tool, read TIPM/FCM DTCs.