Diagnostic Test
- CHECK FOR OTHER DTCS
- With the scan tool, read Engine DTCs.
Are there any related Engine Speed, Cam, or Crank Sensor DTCs present?
Yes
- Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Diagnosis and Testing for gasoline engine applications and perform the appropriate diagnostic procedure.
No
- Go to step 2
- With the scan tool, read Engine DTCs.
- CHECK FOR CAN BUS DTCS
- With the scan tool, read DTCs.
Are there any CAN BUS DTCs present?
Yes
- Refer to DTC-Based Diagnostics/MODULE, Totally Integrated Power (TIPM) - Diagnosis and Testing and perform the appropriate diagnostic procedure.
No
- Using the schematics as a guide, check the Transmission Control Module (TCM) terminals and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. Check for any Service Information Tune-ups or Service Bulletins for possible causes that may apply. If no problems are found, replace and program the Transmission Control Module Assembly (TCMA) in accordance with the Service Information.
- Perform the MPS6 VERIFICATION TEST. See DTC-Based Diagnostics/MODULE, Transmission Control (TCM) - Standard Procedure .
- With the scan tool, read DTCs.