Principles Of Operation - Without Intelligent Access (IA)

Handles, Locks, Latches and Entry Systems

Principles of Operation - Without Intelligent Access (IA)

Transport Mode

The vehicle is placed in a transport mode at the end of production to reduce the drain on the battery. Various systems may be altered in how they operate or are disabled when in the transport mode. Verify the vehicle has exited Transport Mode before attempting to diagnose a Handles, Locks, Latches and Entry Systems concern. For additional information, Refer to Instrumentation, Message Center, and Warning Chimes in Instrument Panel, Gauges and Warning Indicators.

Power Door Locks

The Body Control Module (BCM) monitors the door lock control switch and the driver door lock cylinder. When the BCM (Body Control Module) receives an unlock/lock command from either the door lock control switch or the driver door lock cylinder, the BCM (Body Control Module) energizes a relay (internal to the SJB (Smart Junction Box)) to supply the correct power and grounds for the door lock actuators. The power door locks function independently of ignition status or vehicle speed.

Door Lock Indicator

For a visual indication of the door lock status, the BCM (Body Control Module) controls the door lock indicator on the door lock control switch. If all four doors are locked, the indicator is illuminated. If any one door is unlocked, the indicator turns off. The BCM (Body Control Module) monitors the door lock status through the unlock switches inside each of the 4 door latches. The BCM (Body Control Module) uses the input from the unlock switches to determine if the indicator should be illuminated or off.

Luggage Compartment Lid/Liftgate Release

The luggage compartment lid/liftgate release system is inhibited when the vehicle speed exceeds 8 km/h (5 mph) and when the vehicle doors are locked. The luggage compartment lid/liftgate latch releases the luggage compartment lid/liftgate when the release switch on the luggage compartment lid/liftgate or on the Remote Keyless Entry (RKE) transmitter is pressed. When the BCM (Body Control Module) receives a signal to release the luggage compartment lid/liftgate, the BCM (Body Control Module) supplies voltage to the latch. The luggage compartment lid/liftgate latch then actuates to release the luggage compartment lid/liftgate.

Remote Keyless Entry (RKE)

The BCM (Body Control Module) interprets radio frequency signals from the RKE (Remote Keyless Entry) transmitters. The BCM (Body Control Module) requests the illuminated entry feature to turn the interior lamps on when an unlock command is received. If a lock command is received, the illuminated entry feature turns off.

The RKE (Remote Keyless Entry) transmitter supplies a signal to the antenna internal to the BCM (Body Control Module) when any button is pressed. The BCM (Body Control Module) then supplies voltage to the appropriate door lock actuator(s) to lock or unlock the doors or release the luggage compartment lid/liftgate.