Handles, Locks, Latches and Entry Systems - System Operation and Component Description

Luggage Compartment Lid Passive Entry

With a programmed passive key within 1 m (3.28 ft) outside the luggage compartment lid, press the exterior luggage compartment lid release button (above the license plate) at the rear of the vehicle to open the luggage compartment lid.

Component Description

Door Lock Control Switches

The door lock control switches are dual pole, single throw momentary contact switches. The BCM (vehicles without memory seat) or the DDM and PDM (vehicles with memory seat) provide the voltage signals to the door lock control switches for the lock and unlock requests. When a switch is pressed to lock or unlock, the corresponding input circuit is routed to ground, indicating a request to lock or unlock the doors.

Door Latches

The door latches are sealed units and contain the door lock actuator, lock/unlock feedback switch, and the door ajar switch. The door lock actuators operate in 2 directions, depending on the polarity of the voltage. The door latches can be lubricated, if needed.

Interior Luggage Compartment Lid Release Switch

The interior luggage compartment lid release switch is a momentary contact switch that supplies a ground signal to the BCM. When the interior luggage compartment lid release switch is pressed, the signal is routed to ground indicating a request to the BCM to release the luggage compartment lid latch.

Exterior Luggage Compartment Lid Release Switch

The exterior luggage compartment lid release switch is a momentary contact switch that supplies a ground signal to the BCM. When the exterior luggage compartment lid release switch is pressed, the signal is routed to ground indicating a request to the BCM to release the luggage compartment lid latch.

Luggage Compartment Lid Latch

The luggage compartment lid latch contains the luggage compartment lid latch release motor and the luggage compartment lid ajar switch. The luggage compartment lid latch release motor is momentarily supplied voltage by the BCM when a valid request to open the luggage compartment lid is detected.

DDM or PDM

When equipped with a memory seat, the DDM and the PDM monitor the door lock control switches and control the operation of the power windows and the power mirrors. They communicate with each other and the BCM over the CAN.

The DDM and PDM require PMI when replaced.

Passive Key

The passive key incorporates both the PATS and RKE transmitter functions in a single device.

During key programming procedures, the PATS and RKE transmitter Identification (ID) of a passive key are both programmed. A maximum of 4 passive keys can be programmed.

The passive key also contains a removable key blade that unlocks the driver door in the event of an electrical failure (such as a drained battery). The passive key requires 2 batteries. They should always be replaced as a set. For battery replacement instructions, refer to the Owner's Manual.

To start the vehicle in the event of a passive key battery failure, place the passive key in the backup starting location. Refer to: Passive Anti-Theft System (PATS) - System Operation and Component Description (419-01B Passive Anti-Theft System (PATS), Description and Operation).

Exterior Door Handles

The exterior door handles contain a keyless entry antenna and capacitive touch sensor(s). The antennas and