Control Door Lock Receiver

The power door locks/remote control door lock receiver system allows the driver to operate the vehicle door locks. The driver can operate the door lock from the outside of the vehicle. The driver uses a hand-held radio transmitter. The transmitter operates in the UHF band. The transmitter sends coded signals to the remote control door lock receiver. The remote control door lock receiver detects and decodes the signal. The remote control door lock receiver issues signals in order to control the following locks:
^ The front doors
^ The side doors
^ The rear door
These systems also operate in the usual manner. The door locks will respond to the power door lock switches. For more information on the operation of the liftgate release system refer to Release Systems Schematics the schematics in Body Rear End.

Lock
The remote control door lock receiver receives a signal with a valid vehicle access code (VAC) when you press the LOCK button on the transmitter. Upon receiving the signal, the remote control door lock receiver locks all of the doors.

Battery voltage is available at cavity R of the remote control door lock receiver. The voltage energizes the door lock relay. The door lock relay activates the door lock motors. The ground path for the left front door lock is through the remote control door lock receiver cavity A. The right front door lock motor and the side door lock motor ground through the remote control door lock receiver cavity H. The rear door lock motor grounds through the remote control door lock receiver cavity G. The remote control door lock receiver grounds through G200.

Unlock
The UNLOCK function separates into 2 operations. The separation depends on how you press the UNLOCK button on the transmitter. If you press the UNLOCK button once, the left front door unlocks. If you press the UNLOCK button twice Within 1-5 seconds, all of the doors will UNLOCK, including the rear door.

The remote control door lock receiver unlock function sequence performs when the following conditions occur:
1. The remote control door lock receiver receives a valid VAC.
2. You press the UNLOCK button once on the transmitter.
3. You press twice within 1-5 seconds on the unlock button on the transmitter.

Press Once
The remote control door lock receiver supplies the battery voltage to the left front door lock motor through CKT 694 (TAN). The motor grounds through the contacts of the lock switch. The lock switch is inside the door lock relay. The left front door lock motor runs in order to unlock the left front door.

Press Twice
The remote control door lock receiver activates the door unlock output at cavity B in order to unlock all of the doors. The remote control door lock receiver .Supplies the battery voltage to the coil of the unlock relay in the door lock relay. Battery voltage applies through CKT 194 (WHT). The unlock relay energizes and closes the contacts. Battery voltage is available to the following motors:
^ The right front door
^ The side door
^ The motors ground through the contacts of the lock switch The lock switch is inside the door lock relay assembly. The motors run unlocking the following doors:
^ The right front door
^ The side door
^ The remote control door lock receiver supplies battery voltage to the door lock motors. The left front door lock motor receives voltage from cavity A. Voltage from the unlock side of the lock relay is supplied on CKT 294 (TAN) to cavity H of the receiver. The receiver is then signaled to supply voltage to the rear door motor through cavity G on CKT 246 (TAN). The rear door motor is then grounded through the lock side of the relay.