The power door lock system consists of the following components:

The power door lock system can be controlled by any of the following:

The vehicle is equipped with power door locks. Each lock actuator is powered and controlled by the door module mounted in the individual door, but the rear integration module (RIM), which is the master control for the door lock system, determines when the lock functions are permitted. The RIM receives and examines the requested lock function from the individual door modules, or from the remote function actuator (RFA) via the class 2 serial data circuit. The RIM also examines the transmission shift selector position and the ignition switch position information available over the Class 2 serial data circuits. If the RIM determines that a lock or unlock function is permitted, it sends a class 2 message back to the individual door modules commanding them to perform that Lock or Unlock function.

A power door lock motor is contained within each door lock actuator. Each door module supplies battery positive voltage and ground, through the door lock actuator motor drive 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 drive circuit the battery positive voltage is applied to, and which motor drive circuit the ground is applied to. To perform a lock function, the module applies battery positive voltage to the door lock motor lock circuit, and ground to the door lock motor unlock circuit. To perform a unlock function, the door module reverses the polarity and applies battery positive voltage to the door lock motor unlock circuit, and ground to the door lock motor lock circuit.

The passenger door power door lock switches are wired to the passenger door modules. In order to receive a signal from their associated door lock switches, battery positive voltage and ground are supplied by the passenger door modules. There are two circuits for battery positive voltage: one for a lock signal, and one for an unlock signal. The module supplies ground to the switch via a third circuit. When the switch is activated for a lock or unlock function, the normally open switch contacts are closed and battery positive voltage flows through the switch, providing the module with the appropriate signal input.

The driver door lock switch is the same as the passenger door lock switch, but it is wired to the driver door switch assembly (DDSA), and, for a ground circuit, to the driver door module. It also works the same way as the passenger lock switch works, but the switch signal input information is detected and processed by the DDSA. The DDSA has two circuits that supply 5 volts to the driver door lock switch, one for a lock signal, and one for an unlock signal. The driver door lock switch ground circuit is provided by the driver door module. When the door lock switch is activated, the normally open switch contacts are closed, the voltage flows through the switch and is detected by the DDSA. The DDSA then relays the switch information to the driver door module via the class 2 serial data circuit.

The automatic door lock system provides for locking or unlocking one, or, all of the doors when shifting the transmission. When the vehicle doors are closed, the ignition is turned to ON, and the transmission is shifted out of Park, all the doors will lock. When the vehicle is stopped and the transmission is shifted into Park one, or, all of the doors will unlock. This system is also commanded according to the information stored in the RIM. Automatic door locking is programmed during the manufacturing process but it can be custom programmed by the operator. For information concerning custom programming available and programming instructions, refer to Driver Personalization in Personalization.

Leaving the key in the ignition with any door open will disable the use of the power door locks and the Remote Keyless Entry (RKE) lock function.

The anti-lockout feature can be overridden by holding the lock switch in the LOCK position for more than 3 seconds.

With this feature, all doors can be unlocked from the driver door using the door key. The central door unlock feature is activated when the driver door key is inserted into the driver door lock cylinder and turned to the Unlock position. The doors will unlock when either of the following happens:

The DDM sends a class 2 message to the RIM indicating the above. The RIM sends a class 2 message to all of the door modules to unlock all doors.

The door key cylinder unlock switch is mounted to the driver door key cylinder. The DDM supplies battery positive voltage through the driver door key switch signal circuit, and ground via a ground circuit to the normally open contacts of the switch. When the switch is closed, voltage flows through the switch, providing the DDM with the neccessary signal input.