Diagnostic Test
- CHECK FOR TIPM CAN BUS DTCS
- With the scan tool, read TIPM DTCs.
Are there any TIPM CAN BUS DTCs present?
Yes
- Refer to the TIPM DTC Based Diagnostics and perform the appropriate diagnostic procedure. Perform the diagnostic procedure for U0001-CAN C BUS first if it is present.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Go to step 2
- With the scan tool, read TIPM DTCs.
- CHECK IF ECM/PCM DTCS ARE PRESENT
- With the scan tool, read ECM/PCM DTCs.
Are there any ECM/PCM DTCs present?
Yes
- Refer to the ECM/PCMDTC Based Diagnostics and perform the appropriate diagnostic procedure.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- 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.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- With the scan tool, read ECM/PCM DTCs.