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
The door lock control switches provide a ground circuit GD179 (BK/VT) for the Smart Junction Box (SJB) lock and unlock signal circuits CPK19 (BU/GN) and CPK23 (YE/VT). The door lock actuator output circuits CPL11 (GY/BN), CPL13 (BN/GN) and CPL43 (VT/GY) are at ground on circuit GD179 (BK/VT) through the SJB when the lock and unlock relays are not energized.
When the SJB receives a lock request through circuit CPK19 (BU/GN), the SJB processes the lock request and energizes the all lock relay, supplying voltage to circuit CPL11 (GY/BN) to lock the doors. Circuits CPL13 (BN/GN) and CPL43 (VT/GY) are at ground on circuit GD179 (BK/VT) through the SJB.
When the SJB receives an unlock request through circuit CPK23 (YE/VT), the SJB processes the unlock request and energizes the all unlock relay and driver unlock relay supplying voltage to circuits CPL13 (BN/GN) and CPL43 (VT/GY) to unlock the doors. Circuit CPL11 (GY/BN) is at ground on circuit GD179 (BK/VT) through the SJB.
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.
- Is the door lock control switch OK?
Yes
REPAIR circuit 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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