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 DIAGNOSTIC CODE INDEX for diagnostic procedures and other possible causes.
- Perform NAG1 TRANSMISSION VERIFICATION TEST. Refer to 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 NAG1 TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .