Circuit Operation

The body control module (BCM) is designed with an internal antenna. The BCM picks up transmitted radio frequencies from a hand held remote control door lock transmitter. The transmitter has sufficient power for operating the system from up to 7-10 meters (22-33 ft) from the vehicle. The side door lock actuators and the rear compartment lid release actuator contain an Electronic Circuit Breaker (ECB). ECB resistance increases if the actuator is overloaded. Resistance returns to normal after the voltage is removed from the actuator terminals.