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:
Ensure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.
- Ignition on, engine not running.
- With the scan tool, read and record DTCs.
- With the scan tool, read and record Environmental Data (EV Data).
- With the scan tool, erase DTCs.
- Cycle the ignition switch.
- With the scan tool, read DTCs.
Does this DTC reset?
Yes
- Go To 2.
No
- The condition that caused the symptom is currently not present. Inspect the related wiring for a possible intermittent condition. Look for any chafed, pierced, pinched, or partially broken wires.
- Perform the TRANSFER CASE VERIFICATION TEST. Refer to TRANSFER CASE VERIFICATION TEST .
- CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCs
- With the scan tool, read all active DTCs from all CAN C Bus modules.NOTE:
Check for CAN C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.
Does the scan tool display any active DTCs related to the conditions listed above?
Yes
- Diagnose and repair the DTCs. Refer to the appropriate Electrical Diagnostic Information.
- Perform the TRANSFER CASE VERIFICATION TEST. Refer to TRANSFER CASE VERIFICATION TEST .
No
- Go To 3.
- With the scan tool, read all active DTCs from all CAN C Bus modules.
- VERIFY THAT THE STEERING ANGLE SENSOR IS ACTIVE ON THE BUS
- With the scan tool, select ECU View.
- Verify that the Steering Angle Sensor is active on the bus.
Is the Steering Angle Sensor active on the bus?
Yes
- Perform the Stored Lost Communication diagnostic procedure. Refer to COMMUNICATION - DIAGNOSIS AND TESTING .
- Perform the BODY VERIFICATION TEST. Refer to STANDARD PROCEDURE .
No
- Go To 4.
- CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCs
- With the scan tool, select Network View and select Advanced.
Is there more than one module with active DTCs "Logged Against" the STEERING ANGLE SENSOR?
Yes
- Replace/update the Steering Angle Sensor in accordance with the service information.
- Perform the TRANSFER CASE VERIFICATION TEST. Refer to TRANSFER CASE VERIFICATION TEST .
No
- Replace the Final Drive Control Module (FDCM) in accordance with the service information.
- Perform the TRANSFER CASE VERIFICATION TEST. Refer to TRANSFER CASE VERIFICATION TEST .
- With the scan tool, select Network View and select Advanced.