Principles of Operation

Locks, Latches and Entry Systems






Principles Of Operation

Power Locks

The power lock/unlock feature requests all of the vehicle doors to lock or unlock upon a request from the door lock control switch, the keyless entry keypad, or the Remote Keyless Entry (RKE) transmitter. Power locking and unlocking functions independently of the key position, the vehicle speed, or the transmission position. The Driver Door Module (DDM) activates internal relays to supply the correct power and grounds for the door lock actuators.

Remote Keyless Entry (RKE) Transmitter

The RKE transmitter can be programmed using a scan tool or by using the ignition lock cylinder method. Refer to Remote Keyless Entry (RKE) Transmitter Programming Transmitter for programming information.

The RKE transmitter does not operate if the transmission is out of PARK (P) or NEUTRAL (N).

The RKE transmitter initiates the following electronic system functions:

- Unlocks the driver door.
- Unlocks all doors.
- Locks all doors.
- Arms/disarms the perimeter alarm or inhibits the alarm for the luggage compartment.
- Activates/deactivates the panic alarm.
- Commands the interior lamps on (when unlocking) and off (when locking).
- Sounds the horn once when LOCK is pressed twice within 3 seconds and the doors are closed.
- Releases the luggage compartment lid latch on vehicles without a power luggage compartment lid.
- Opens/closes the luggage compartment lid on vehicles with a power luggage compartment lid.

The RKE transmitter has a normal operating range of 10 m (33 ft).

Keyless Entry Keypad

The keypad does not operate if the driver door is ajar.

The keypad, located in the exterior of the driver door, provides a method for the customer to access the vehicle without a key or RKE transmitter. The keyless entry keypad feature:

- locks all doors.
- unlocks only the driver door.
- unlocks all doors.
- programs/erases the customer key code.
- enables/disables autolocking and auto-unlocking.
- arms/disarms the perimeter alarm.
- releases the luggage compartment lid latch on vehicles without a power luggage compartment.
- opens/closes the power luggage compartment lid.

The keypad feature operates independently of the key position status, the vehicle speed, or the transmission position. When a keypad button is pressed, the keypad buttons illuminate to provide better visibility. If LOCK ALL DOORS is entered or 5 seconds have elapsed since the last button was pressed, the illumination is turned off.

Each vehicle equipped with a keypad is programmed with a 5-digit entry code. This code is provided to the customer through a wallet card. In addition, this code is available through a scan tool. When entering codes, each digit must be entered within 5 seconds of the previous button press.