2007 Liberty KJ Factory Service Manual 8 - ELECTRICAL

NO PCM MESSAGES RECEIVED

For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
DTC PRESENT
 
NO RESPONSE - PCI BUS - PCM
 
ELECTRONIC VEHICLE INFORMATION CENTER
 




Diagnostic Test

1. DTC PRESENT

With the scan tool, erase DTCs.
Cycle the ignition and wait approximately 1 minute.
With the scan tool, read DTCs.

Did this DTC reset?

Yes


No

2. ELECTRONIC VEHICLE INFORMATION CENTER

Turn the ignition on.
With the scan tool, enter Body Computer, System Tests, then PCM Monitor.

Does the scan tool display PCM Active on the Bus?

Yes


No