Pinpoint Test D: All Door Locks Are Inoperative From One Switch

Handles, Locks, Latches and Entry Systems

Pinpoint Tests

Pinpoint Test D: All Door Locks Are Inoperative From One Switch

Refer to Wiring Diagram Set 110, Power Door Locks for schematic and connector information. Diagrams By Number

Normal Operation

The Body Control Module (BCM) sends voltage signals to the door lock control switches through the lock and unlock input circuits. When the lock or unlock switch is pressed, the corresponding voltage signal is routed to ground, signaling the BCM to lock or unlock the doors. The door lock control switches have a dedicated ground circuit.

This pinpoint test is intended to diagnose the following:

- Wiring, terminals or connectors
- Door lock control switch

PINPOINT TEST D: ALL DOOR LOCKS ARE INOPERATIVE FROM ONE SWITCH

NOTICE: Use the correct probe adapter(s) when making measurements. Failure to use the correct probe adapter(s) may damage the connector.

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D1 CHECK THE SUSPECT DOOR LOCK CONTROL SWITCH FOR CORRECT OPERATION

- Disconnect: Suspect Door Lock Control Switch .
- Carry out the door lock control switch component test.

- Does the door lock control switch pass the component test?

Yes
REPAIR circuit GD133 (BK) or GD179 (BK/VT) for an open. TEST the system for normal operation.

No
INSTALL a new door lock control switch. REFER to Door Lock Control Switch Service and Repair. TEST the system for normal operation.

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