Symptom:
*ALL DOOR LOCKS INOPERATIVE
POSSIBLE CAUSES
DTC PRESENT
FUSE #22 OPEN
FUSE B+ CIRCUIT OPEN
INSTRUMENT CLUSTER - OPEN CIRCUIT
TEST ACTION APPLICABILITY
1 Turn the ignition on.
With the DRBIIIt, read DTC’s.
Does the DRBIIIt display any Door Lock related DTC’s?
All
Yes → Refer to symptom list for problems related to Power Door Locks.
Perform BODY VERIFICATION TEST - VER 1.
No → Go To 2
2 Test both sides of fuse #22 in the PDC.
Is there 12 volts on both sides of fuse #22?
All
Yes → Go To 3
No → Replace the fuse if open and retry the system. If the fuse blows,
locate and repair a short to the Instrument Cluster. The 12 volt
supply to the fuse is a bus bar in the PDC.
Perform BODY VERIFICATION TEST - VER 1.
3 Remove the instrument cluster.
Measure the voltage between the Fused B+ circuit and ground (cavity 2 in the C1
connector to ground).
Is the voltage above 10.0 volts on the Fused B+ circuit?
All
Yes → Replace the Instrument Cluster.
Perform BODY VERIFICATION TEST - VER 1.
No → Repair the Fused B+ circuit for an open.
Perform BODY VERIFICATION TEST - VER 1.
483
POWER DOOR LOCKS/RKE
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