Automatic Door Locks

AUTOMATIC DOOR LOCK PROGRAMMING
The vehicle is initially programmed at the factory to lock all doors when the gear selector is shifted out of park, and to unlock all doors when the gear selector is shifted back into park. However, this function can be overridden by reprogramming the RAC module as follows:

Close all doors and turn ignition switch to RUN. Depress brake pedal. Press and hold the power door lock switch in the LOCK position and cycle the gear selector out of and back into park, release lock switch. All doors will now lock when the gear selector is shifted out of park and remain locked until unlocked manually or the power door lock switch is operated.

The initial lock/unlock feature can be reprogrammed as follows:

Close all doors and turn ignition switch to RUN. Depress brake pedal. Press and hold the power door lock switch in the UNLOCK position and cycle the gear selector out of and back into park, release lock switch.

CIRCUIT OPERATION
The automatic door locks are controlled by the Remote Accessory Control (RAC) Module. The RAC Module receives a signal from the Park/Neutral Position Switch stating whether the shift select lever is in "PARK" or not. When the LH door is closed, the vehicle is in "RUN" and the gear selector lever is shifted out of "PARK," the RAC Module applies battery voltage to the Door Lock Relay Assembly, thus locking the doors. If programmed to do so, the RAC Module will also unlock the doors when the gear selector lever is put back in to "PARK."