Power Locks: Description and Operation

CIRCUIT OPERATION
Battery voltage from I/P Fuse #39 PWR LK Fuse is applied at all times to the Door Lock Relay through CKT 1540. Battery voltage from I/P Fuse #35 PWR MIR Fuse is applied at all times to the Door Lock Switches through CKT 2040. The Door Lock Relay is permanently grounded at G200.

When the Ignition Key is placed into the Ignition Lock Cylinder, the Ignition Key Alarm Switch is closed. When the LH Front door is open, the LH Front Mini Wedge Switch closes the circuit to ground. This energizes the Ignition Door Lock Disable Relay, which will open CKT 903 to the Door Lock Relay. The Door Lock Actuators will not lock the doors. When any Door Lock Switch is pushed to the "LOCK" position, battery voltage is applied to the Ignition Door Lock Disable Relay through CKT 195. With the Ignition Key removed from the Ignition Lock Cylinder or when the ignition is in the "RUN" position, the Ignition Door Lock Disable Relay is de-energized. This allows voltage to be applied to the Door Lock Relay through CKT 295. Ground is provided to the Door Lock Relay. The Door Lock Actuators will lock the doors.

When any Door Lock Switch is pushed to the "UNLOCK" position, battery voltage is applied to the Door Lock Relay through CKT 194. This energizes the relay, which then applies battery voltage from I/P Fuse #39 PWR LK fuse to the Door Lock Actuators through CKT 294. Ground is provided to the Door Lock Relay. The Door Lock Actuators will rotate in the opposite direction and unlock the doors.