All Door Locks Inoperative

ALL DOOR LOCKS INOPERATIVE

All Door Locks Inoperative:

POSSIBLE CAUSES
- DTC present
- Fuse #22 open
- (A941) Fuse B+ circuit open
- Instrument cluster

Diagnostic Test

1. DTC PRESENT
Turn the ignition on.
With the DRBIII(R), read DTC's.

Q: Does the DRBIII(R) display any Door Lock or Cluster related DTC's?

YES: Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Go To 2

2. FUSE #22 OPEN




Test both sides of fuse #22 in the PDC.

Q: Is there 12 volts on both sides of fuse #22?

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. Body Verification Test

3. (A941) FUSED B+ CIRCUIT OPEN




Turn the ignition off.
Remove the instrument cluster.
Measure the voltage between the (A941) Fused B+ circuit and ground (cavity 2 in the C1 connector to ground).

Q: Is the voltage above 10.0 volts on the Fused B+ circuit?

YES: Replace the Instrument Cluster. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
NO: Repair the Fused B+ circuit for an open. Perform BODY VERIFICATION TEST - VER 1. Body Verification Test