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

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

Ground is supplied to the door lock control switches at all times through circuit 57 (BK). The door lock control switches provide ground to the Driver Door Module (DDM) through circuits 119 (PK/YE) and 120 (PK/LG) for the lock and unlock requests. When the lock or unlock switch is pressed, the ground signal is routed to the DDM.

The DDM contains internal relays that are energized depending on input received. When the DDM receives a lock or unlock request from the door lock control switch, the DDM energizes the appropriate relay(s) to lock or unlock the doors.

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

- Is the door lock control switch OK?

Yes
REPAIR circuit 57 (BK) 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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