Description & Operation

CAUTION: When battery is disconnected, vehicle computer and memory systems may lose memory data. Driveability problems may exist until computer systems have completed a relearn cycle. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION before disconnecting battery.

The power door lock system consists of a door lock relay, door lock control unit, switches and door lock actuators. Battery voltage is routed through fuse No. 11 (15-amp), located in the junction block. If the inside lock knobs of the front door are placed in the LOCK (or UNLOCK) position, the switch in the door lock actuator will be OFF (or ON), and the output transistor will be ON for 0.5 second according to the timer function in the door lock control unit. As a result, the LOCK side (or UNLOCK side) of the door lock relay will be ON, operating the actuators of all the doors.

The door lock actuator contains a PTC thermistor to prevent damage caused by overheating of the motor. If the central door lock is frequently used, the actuator may temporarily fail to operate. If it returns to normal in a few minutes, it is not defective.