Diagnostic Test
WARNING: This page is about a different car, the 2012 Jeep Liberty. However, it is still accessible from the selected car via links, so may be relevant.
- VERIFY DTC IS ACTIVE NOTE:
Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
- With the scan tool, read active DTCs.
Is this DTC active?
Yes
- Go To 2.
No
- Refer to COMMUNICATION - DIAGNOSIS AND TESTING and perform the Stored Lost Communication DTCs diagnostic procedure.
- With the scan tool, read active DTCs.
- CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS
- With the scan tool, read all active DTCs from all modules.NOTE:
Check for TIPM configuration, CAN B or C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.
Does the scan tool display any active DTCs to the conditions listed above?
Yes
- Refer to TIPM - DIAGNOSIS AND TESTING and perform the appropriate diagnostic procedure.
No
- Go To 3.
- With the scan tool, read all active DTCs from all modules.
- VERIFY THAT THE TCM IS ACTIVE ON THE BUS
- Ignition on, engine not running.
- With the scan tool, select Network Diagnostics.
- Verify that the TCM is active on the bus.
Is the TCM active on the bus?
Yes
- Go To 4.
No
- Refer to COMMUNICATION - DIAGNOSIS AND TESTING and perform the No Response from TCM diagnostic procedure.
- CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
- With the scan tool, select Network Diagnostics.
Is there more than one module with active DTCs "Logged Against" the TCM?
Yes
- Replace/update the TCM in accordance with the service information.
- Perform the TCM VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Replace/update the module that set this DTC in accordance with the service information.
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
- With the scan tool, select Network Diagnostics.