Symptom:
BCM - IOD WAKE UP CLUSTER OUTPUT OPEN / SHORT TO
GROUND
When Monitored and Set Condition:
BCM - IOD WAKE UP CLUSTER OUTPUT OPEN / SHORT TO GROUND
When Monitored: With the ignition in all positions.
Set Condition: When the BCM output is off and the BCM detects that the Instrument
Cluster IOD Wake Up circuit is open or shorted to ground for at least 125 milliseconds.
Circuit is checked before Sleep Mode.
POSSIBLE CAUSES
INSTRUMENT CLUSTER WAKE UP SIGNAL CIRCUIT OPEN
INSTRUMENT CLUSTER WAKE UP SIGNAL CIRCUIT SHORT TO GROUND
BODY CONTROL MODULE
INSTRUMENT CLUSTER
TEST ACTION APPLICABILITY
1 Turn the ignition off.
Disconnect the BCM C4 harness connector.
Disconnect the Instrument Cluster C1 harness connector.
Measure the resistance of the Wake Up circuit between the BCM C4 connector and
the MIC C1 connector.
NOTE: If set, diagnose and repair IOD - B(+) OUTPUT SHORT DTC before
proceeding with this test.
Is the resistance above 5.0 ohms?
All
Yes → Repair the Instrument Cluster Wake Up Signal circuit for an
open.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 2
2 Turn the ignition off.
Disconnect the BCM C4 harness connector.
Disconnect the Instrument Cluster C1 harness connector.
Measure the resistance between ground and the Wake Up Signal circuit.
Is the resistance below 5.0 ohms?
All
Yes → Repair the Instrument Cluster Wake Up Signal circuit for a short
to ground.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 3
253
IGNITION, POWER, ACCESSORY
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