Diagnostic Test
WARNING: This page is about a different car, the 2009 Jeep Patriot and 2009 Jeep Compass. However, it is still accessible from the selected car via links, so may be relevant.
- ACTIVE DTC NOTE: Diagnose all CAN B and C communication DTCs before continuing.
- Turn the ignition on.
- With a scan tool, view DTCs.
Is the status Active for this DTC?
Yes
- Go to step 2
No
- Perform the INTERMITTENT CONDITION diagnostic procedure. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
- TCM COMMUNICATION RELATED DTCS IN OTHER MODULES
- With a scan tool check for TCM communication related DTCs in other modules on the CAN Bus.
Are there any TCM communication related DTCs in other modules on the CAN Bus at this time?
Yes
- Replace and program the Transmission Control Module (TCM) in accordance with the Service Information.
- Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
No
- Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information.
- Perform the PCM Verification Test. See DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) - Standard Procedure .
- With a scan tool check for TCM communication related DTCs in other modules on the CAN Bus.