Door Locks: Description and Operation

The power door locks/remote keyless entry control system allows the driver to operate the vehicle door locks and endgate window release from outside the vehicle using a hand-held radio transmitter. The transmitter operates in the UHF band; it sends coded signals to the Keyless Entry Module. The Keyless Entry Module detects and decodes the signal and issues signals to control the door locks and endgate window release. These systems can also be operated in the usual manner; for instance, the door locks will respond to the power door lock switches.

DOOR LOCK OPERATION - SWITCHES

LOCK

When either the LH or RH Front Power Door Lock Switches are pressed to the LOCK position, voltage is supplied from the PWR ACC Circuit Breaker, through the ORN/BLK (60) wire, through the Door Lock Switch to terminal F of the Door Lock Relay Assembly. This voltage energizes the Lock Relay Coil, allowing voltage to flow through the relay to the Door Lock Motors, locking all doors. Ground for the LH Front Door Lock Motor is supplied through the Remote Keyless Entry Module. Ground for the other three motors is supplied through the Door Lock Relay Assembly.

UNLOCK

When either of the Front Door Lock Switches is pressed to the UNLOCK position, voltage is supplied from the PWR ACC unlocking the doors. Ground for the motors is supplied through the Door Lock Relay.