Diagnostic Test
- CHECK FOR BCM CAN BUS DTCS
- With the scan tool, read BCM DTCs.
Are there any BCM CAN BUS DTCs present?
Yes
- Refer to the DTC INDEX article and perform the appropriate diagnostic procedure. Perform the diagnostic procedure for DTC U0001-CAN C BUS first if it is present.
- Perform TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Go To 2
- With the scan tool, read BCM DTCs.
- ELECTRONIC SHIFT MODULE DTCS PRESENT
- With the scan tool, read Steering Control Module (SCM) DTCs.
Are there any SCM DTCs present?
Yes
- Refer to the SCM DIAGNOSTIC CODE INDEX and perform the appropriate diagnostic procedure.
- Perform 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 and program the TCM in accordance with the Service Information.
- Perform TRANSMISSION VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- With the scan tool, read Steering Control Module (SCM) DTCs.