Power Door Lock Actuator: Description and Operation

POWER DOOR LOCK MOTORS

A power door lock motor is contained within each door lock actuator. Each door module supplies battery voltage and ground, through the door lock actuator motor control circuits to its associated door lock actuator motor. The power door lock motors are reversible. The function performed by the lock motor, Lock or Unlock, depends on which motor control circuit the voltage is applied to, and which motor control circuit the ground is applied to. To perform a lock function, the module applies voltage to the door lock motor lock circuit, and ground to the door lock motor unlock circuit. To perform an unlock function, the door module reverses the polarity and applies voltage to the door lock motor unlock circuit, and ground to the door lock motor lock circuit.