Symptom:
*NO RESPONSE FROM INSTRUMENT CLUSTER
POSSIBLE CAUSES
ATTEMPT TO COMMUNICATE WITH THE BCM
OPEN GROUND CIRCUIT
OPEN IOD B+ CIRCUIT
OPEN PCI BUS CIRCUIT
INSTRUMENT CLUSTER WAKE UP SENSE CKT OPEN
INSTRUMENT CLUSTER WAKE UP SENSE CKT INTERNALLY OPEN
INSTRUMENT CLUSTER WAKE UP SENSE CKT SHORTED TO VOLTAGE
INSTRUMENT CLUSTER WAKE UP SENSE CKT INTERNALLY SHORTED TO VOLTAGE
INSTRUMENT CLUSTER
BODY CONTROL MODULE
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRB, enter Body then Body Computer.
Was the DRB able to I/D or communicate with the BCM?
All
Yes → Go To 2
No → Refer to the symptom list for problems related to no communica-
tion with the BCM.
Perform BODY VERIFICATION TEST - VER 1.
2 Turn the ignition off.
Disconnect the Instrument Cluster C1 harness connector.
Using a 12-volt test light connected to 12-volts, probe both ground circuits.
Is the test light illuminated for each circuit?
All
Yes → Go To 3
No → Repair the ground circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
3 Turn the ignition off.
Disconnect the Instrument Cluster C1 harness connector.
Using a 12-volt test light connected to ground, probe the IOD B+ circuit.
Is the test light illuminated?
All
Yes → Go To 4
No → Repair the IOD B+ circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
162
COMMUNICATION
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