Jeep Liberty KJ. Manual — part 1457
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 ECM or PCM?
Yes
>> Replace/update the ECM or PCM in accordance with the service information.
Perform POWERTRAIN VERIFICATION TEST. Refer to 9 - ENGINE - DIAGNOSIS AND TESTING.
No
>> Using the schematics as a guide, check the BCM pins, terminals, and connectors for corrosion, dam-
age, and terminal push out. Pay particular attention to all Communication circuits. If no problems are
found, replace and program the BCM in accordance with the Service Information.
Perform BODY VERIFICATION TEST – VER 1. (Refer to 8 - ELECTRICAL/ELECTRONIC CONTROL
MODULES - STANDARD PROCEDURE).
8E - 40
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTIC
KJ
U0001-CAN C BUS CIRCUIT
For a complete wiring diagram Refer to Section 8W.
KJ
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTIC
8E - 41
•
When Monitored:
With the ignition on.
•
Set Condition:
A module detects a short in either CAN C Bus circuit.
Perform the CAN C Bus Communication Failure diagnostic test procedure. (Refer to 8 - ELECTRICAL/ELEC-
TRONIC CONTROL MODULES - DIAGNOSIS AND TESTING).
8E - 42
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTIC
KJ
U0002–CAN C BUS OFF PERFORMANCE
For a complete wiring diagram Refer to Section 8W.
KJ
ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTIC
8E - 43
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