2007 Liberty KJ Factory Service Manual 8 - ELECTRICAL

*ANY PCI BUS INDICATOR INOPERATIVE

For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
INDICATOR MESSAGE NOT RECEIVED
 
NO RESPONSE - INSTRUMENT CLUSTER
 
NO RESPONSE - PCI BUS
 
NO RESPONSE - PCI BUS - POWERTRAIN CONTROL MODULE
 
INSTRUMENT CLUSTER
 




Diagnostic Test

1. NO RESPONSE - INSTRUMENT CLUSTER

Turn the ignition on.
With the scan tool, select System Monitors, then J1850 Module Scan.

Does the scan tool display: MIC PRESENT on the BUS?

Yes


No

2. NO RESPONSE - INSTRUMENT CLUSTER

Turn the ignition on.
With the scan tool, select MIC, then MODULE DISPLAY.

Does the scan tool display: NO RESPONSE from MIC?

Yes


No

3. NO RESPONSE - PCI BUS

Turn the ignition on.
With the scan tool, select Body, MIC, MONITORS, PCI BUS MONITORS.

Does the scan tool display: PCM INACTIVE on the BUS?

Yes


No

4. INDICATOR MESSAGE NOT RECEIVED

NOTE: Diagnose and repair any PCM or BCM DTCs before proceeding with this test.


Perform the Instrument Cluster Self Test.
Depress and hold the Trip Odometer button while turning the ignition from the off to the on position.
Observe the indicator in question.

Did the indicator illuminate?

Yes


No