Component Description
Handles, Locks, Latches and Entry Systems - with Intelligent Access (IA)
Component Description
Door Latch
The door latches are sealed units and contain the door lock actuator, lock/unlock feedback switch, and the door ajar switch. The door latches can be lubricated, if necessary. REFER to Latch Lubrication .
Liftgate or Luggage Compartment Lid Latch
The liftgate or luggage compartment lid latch is a sealed unit and contains the release motor and the ajar switch.
Door Lock Control Switch
The door lock control switch is a momentary contact switch that receives voltage from the BCM (Body Control Module) on the input circuit. When the switch is pressed, it routes the input circuit to ground, signaling the BCM (Body Control Module) to lock or unlock the doors. When the switch is pressed, the doors lock or unlock depending upon their current state.
The door lock control switch contains a door lock indicator that is used for indication of the door lock status.
Liftgate or Luggage Compartment Lid Release Switch
The liftgate or luggage compartment lid release switch is a momentary contact switch that receives voltage from the RFA (Remote Function Actuator) module on the input circuit. When the switch is pressed, the input circuit is routed to ground, signalling the RFA (Remote Function Actuator) module that there is an IA (Intelligent Access) request to release the liftgate or luggage compartment lid.
Intelligent Access (IA) Key
The IA (Intelligent Access) key incorporates both the PATS (Passive Anti-Theft System) and the RKE (Remote Keyless Entry) transmitter functions in a single device. The IA (Intelligent Access) key must be located inside the vehicle for engine starting and on the outside for IA (Intelligent Access) features. During key programming procedures, the PATS (Passive Anti-Theft System) and RKE (Remote Keyless Entry) transmitter of an IA (Intelligent Access) key are both programmed into the RFA (Remote Function Actuator) module and BCM (Body Control Module). The vehicle accepts programming of up to 4 IA (Intelligent Access) keys. REFER to Erase All Keys and Program Two Keys Erase All Keys and Program Two Keys or REFER to Key Programming Using Diagnostic Equipment Key Programming Using Diagnostic Equipment for the key programming procedures.
The IA (Intelligent Access) key also contains a removable mechanical key blade that can be used to unlock the driver door.
Exterior Front Door Handles
The exterior front door handles contain an IA (Intelligent Access) antenna and a capacitive touch lock and unlock sensor. The antennas and lock/unlock sensors are hardwired to the RFA (Remote Function Actuator) module. When a lock or unlock sensor is touched, it signals to the RFA (Remote Function Actuator) module there is an IA (Intelligent Access) request. When the RFA (Remote Function Actuator) module receives the request it activates the IA (Intelligent Access) antenna in the corresponding door handle. The low frequency signal from the IA (Intelligent Access) antenna activates an IA (Intelligent Access) key.
Exterior Rear Door Handles
The exterior rear door handles contain a capacitive touch unlock sensor. The unlock sensors are hardwired to the RFA (Remote Function Actuator) module. When a unlock sensor is touched, it signals the RFA (Remote Function Actuator) module there is an IA (Intelligent Access) request. When the RFA (Remote Function Actuator) module receives the request it activates the IA (Intelligent Access) antenna in the corresponding front exterior door handle. The low frequency signal from the IA (Intelligent Access) antenna activates an IA (Intelligent Access) key.
Liftgate or Luggage Compartment Intelligent Access (IA) Antenna
The liftgate or luggage compartment IA (Intelligent Access) antenna is hardwired to the RFA (Remote Function Actuator) module and, when activated by the RFA (Remote Function Actuator) module, transmits a low frequency signal that activates an IA (Intelligent Access) key.
Driver Door Module (DDM) or Passenger Door Module (PDM)
The DDM (Driver Door Module) and PDM (Passenger Door Module) control the operation of the power door locks, power windows, and the power mirrors. They communicate with each other and the BCM (Body Control Module) over the MS-CAN (Medium Speed Controller Area Network).
They also send commands and receive feedback from the DRDM (Driver Rear Door Module) and PRDM (Passenger Rear Door Module) over a dedicated LIN (Local Interconnect Network) for each module.
The DDM (Driver Door Module) and PDM (Passenger Door Module) do not require PMI (Programmable Module Installation) when replaced.
Driver Rear Door Module (DRDM) or Passenger Rear Door Module (PRDM)
The DRDM (Driver Rear Door Module) and PRDM (Passenger Rear Door Module) control the operation of the power door locks and power windows in the rear doors. They receive commands and send feedback with the corresponding DDM (Driver Door Module) or PDM (Passenger Door Module) over a dedicated LIN (Local Interconnect Network) for each module.
The DRDM (Driver Rear Door Module) and PRDM (Passenger Rear Door Module) do not require PMI (Programmable Module Installation) when replaced.
Remote Functions Receiver (RFR) Module
The RFR (Remote Functions Receiver) module has a dedicated power and ground. It communicates all IA (Intelligent Access) and RKE (Remote Keyless Entry) information to the RFA (Remote Function Actuator) module through a dedicated single circuit network. The RFR (Remote Functions Receiver) module is a receiving antenna that receives the high frequency signals from an IA (Intelligent Access) key. It also receives the signals from a RKE (Remote Keyless Entry) command.
Remote Function Actuator (RFA) Module
The RFA (Remote Function Actuator) module is responsible for obtaining the IA (Intelligent Access) key data and IA (Intelligent Access) lock/unlock requests. It uses the IA (Intelligent Access) antennas and the RFR (Remote Functions Receiver) module to receive the IA (Intelligent Access) key data. The RFA (Remote Function Actuator) module receives direct input from the RFR (Remote Functions Receiver) module over a dedicated single circuit network and is hardwired to the IA (Intelligent Access) antennas and lock/unlock sensors. The RFA (Remote Function Actuator) module communicates the IA (Intelligent Access) key and request data to the BCM (Body Control Module) over the MS-CAN (Medium Speed Controller Area Network).
If the RFA (Remote Function Actuator) module is replaced, at least two keys must be programmed to it and a parameter reset with the BCM (Body Control Module) must be performed to enable PATS (Passive Anti-Theft System). REFER to Remote Function Actuator (RFA) .
Body Control Module (BCM)
The BCM (Body Control Module) is the master module in control of the power door lock system. It is responsible for determining if the doors should be locked or unlocked, and releasing the liftgate or luggage compartment lid. The BCM (Body Control Module) receives direct input from the door lock control switch. It receives IA (Intelligent Access) and RKE (Remote Keyless Entry) commands from the RFA (Remote Function Actuator) module over MS-CAN (Medium Speed Controller Area Network).
REFER to Body Control Module (BCM) .