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 DIAGNOSTIC CODE INDEX 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 NAG1 TRANSMISSION VERIFICATION TEST .
No
- Go To 2.
- With the scan tool, read TIPM DTCs.
- CHECK IF ENGINE DTC'S ARE PRESENT
- With the scan tool, read engine DTCs.
Are there any engine DTCs present?
Yes
- Refer to 3.6L - DIAGNOSTIC CODE INDEX or 5.7L & 6.4L - DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to NAG1 TRANSMISSION VERIFICATION TEST .
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 NAG1 TRANSMISSION VERIFICATION TEST .
- With the scan tool, read engine DTCs.