2007 Liberty KJ Factory Service Manual 8 - ELECTRICAL

*NO RESPONSE FROM CLUSTER





For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
(Z18) GROUND CIRCUIT OPEN
 
(A908) FUSED B(+) CIRCUIT OPEN
 
(F942) FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN
 
(D25) PCI BUS CIRCUIT OPEN
 
CLUSTER
 




Diagnostic Test

1. TEST FOR INTERMITTENT CONDITION

Turn the ignition on.

NOTE: Ensure the IOD fuse is installed and battery voltage is between 10.0 and 16.0 volts.


With the scan tool, select ECU view.

NOTE: A red X will be next to the module that is not communicating, indicating that the module is not active on the Bus network. A green check indicates that the module is active on the Bus network.



Does the scan tool display a red X next to the module?

Yes


No

2. (Z18) GROUND CIRCUIT OPEN



Turn the ignition off.
Disconnect the Cluster harness connector.
Using a 12-volt test light connected to 12-volts, probe the (Z18) ground circuit.

Does the test light illuminate brightly?

Yes


No

3. (A908) FUSED B(+) CIRCUIT OPEN



Using a 12-volt test light connected to ground, probe the (A908) Fused B(+) circuit.

Does the test light illuminate brightly?

Yes


No

4. (F942) FUSED IGNITION SWITCH OUTPUT CIRCUIT OPEN



Turn the ignition on.
Using a 12-volt test light connected to ground, probe the (F942) Fused Ignition Switch Output circuit.

Does the test light illuminate brightly?

Yes


No

5. (D25) PCI BUS CIRCUIT OPEN



Turn the ignition off.
Disconnect the scan tool from the DLC connector.
Measure the resistance of the (D25) PCI Bus circuit between the DLC and the cluster connector.

Is the resistance below 5.0 ohms?

Yes


No