Power Lock System

The power lock system includes the following major components, which are described in further detail elsewhere in this service information:

• Body Control Module  - The Body Control Module (BCM) is located under the driver side end of the instrument panel in the passenger compartment. Refer to DESCRIPTION .
• Electronic Vehicle Information Center  - The Electronic Vehicle Information Center (EVIC) is a digital display integral to the Instrument Panel Cluster (IPC), which is located on the instrument panel in front of the driver. Refer to DESCRIPTION .
• Instrument Panel Cluster  - The Instrument Panel Cluster (IPC) is located on the instrument panel in front of the driver. Refer to DESCRIPTION .
• Power Lock Motors  - A reversible electric power lock motor is integral to the latch of each door and the liftgate.
• Power Lock Switch  - A power lock switch is integral to the driver side door latch located within the driver side door and concealed behind the door inside trim panel.

These components and their controls are combined to provide the following power lock system central locking and unlocking features:

• Automatic Door Locking  - Automatic door locking (also known as rolling door locks) automatically locks any unlocked door when the vehicle speed exceeds about 20 kilometers per hour (12 miles per hour). This is a Customer Programmable feature.
• Customer Programmable Features  - The vehicle operator interfaces with the BCM, which is the power lock system controller, using the EVIC. EVIC switch push buttons located on the right side of the Instrument Panel Cluster (IPC) bezel allow the vehicle operator to set or change the power lock system Customer Programmable Features through the EVIC display.
• Enhanced Accident Response System  - In the event of a vehicle impact that causes airbag deployment but leaves vehicle electrical power intact, the Enhanced Accident Response System (EARS) automatically turns OFF the supply of fuel to the engine, turns ON the interior courtesy lamps, turns ON the hazard warning flashers and unlocks the doors after the vehicle speed has returned to zero. This helps emergency responders in their efforts to render the appropriate assistance. The courtesy lamps and hazard flashers remain ON as long as the battery has power or until the key is removed from the ignition.
• Illuminated Entry  - Automatic illumination of the interior courtesy lamps when the vehicle is unlocked using the power lock system.

Hard wired circuitry connects the power lock system components to the electrical system of the vehicle. These hard wired circuits are integral to several wire harnesses, which are routed throughout the vehicle and retained by many different methods. These circuits may be connected to each other, to the vehicle electrical system and to the power lock system components through the use of a combination of soldered splices, splice block connectors, and many different types of wire harness terminal connectors and insulators. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, further details on wire harness routing and retention, as well as pin-out and location views for the various wire harness connectors, splices and grounds.