Door Locks: Description and Operation
OPERATIONThe Power Door Locks are powered at all times by Circuit Breaker 12. When either the Left or Right Door Lock Control Switch is placed in the "LOCK" position, current flows from Circuit Breaker 12, through the 171 (BK/W) wire, the closed switch contacts, and the 118 (PK/O) wire to the Door Lock Motors, locking all the Doors.
When either the Left or Right Door Lock Control Switch is placed in the "UNLOCK" position, current flows from Circuit Breaker 12, through the 171 (BK/W) wire, the closed switch contacts, and the 117 (PK/BK) wires to the Door Lock Motors, causing the Door Lock Motors to reverse direction and unlock all the doors.
In the "REST" position, both Door Lock Motors are grounded through separate switch contacts.