Pinpoint Test D: All Door Locks Are Inoperative From One Switch - Without Memory

Locks, Latches and Entry Systems

Pinpoint Tests

Pinpoint Test D: All Door Locks Are Inoperative From One Switch - Without Memory

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

Normal Operation

The Smart Junction Box (SJB) sends voltage signals to the door lock control switches through circuits CPL42 (GY/YE) and CPL43 (VT/GY) for the lock and unlock requests, respectively. When the lock or unlock switch is pressed, the voltage signal is routed to ground. The driver door lock control switch is grounded through circuit GD126 (BK/WH) and the passenger switch is grounded through circuit GD139 (BK/YE).

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 - WITHOUT MEMORY

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

NOTE: Failure to disconnect the battery when instructed will result in false resistance readings. Refer to Battery.

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D1 CHECK CIRCUIT GD126 (BK/WH) OR GD139 (BK/YE) FOR AN OPEN


- Disconnect: Negative Battery Cable.
- Disconnect: Inoperative Door Lock Control Switch.
- Measure the resistance between the driver door lock control switch C505-4, circuit GD126 (BK/WH), harness side and ground; or between the passenger door lock control switch C605-4, circuit GD139 (BK/YE), harness side and ground.




- Is the resistance less than 5 ohms?

Yes
INSTALL a new door lock control switch. REFER to Door Lock Control Switch Service and Repair. TEST the system for normal operation.

No
REPAIR the circuit in question. TEST the system for normal operation.

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