Keyless Entry System Circuit Description Luxury

When the unlock button on the transmitter is depressed once, the body control module (BCM) sends a voltage signal through CKT 694 (TAN) to the LF door lock motor. Since CKT 295 (GRY) grounds through the door lock relay to CKT 150 (BLK) to G202, the drivers door unlocks.

When the unlock button on the transmitter is depressed twice, the BCM unlocks the driver door as described above and also sends a voltage signal through CKT 781 (ORN/BLK) to the door lock relay. This energizes the door unlock coil and voltage is sent through CKT 294 (TAN) to the RF, RR and LR door lock motors

When the rear unlock button is depressed twice, the BCM sends a voltage signal through CKT 253 (BRN) to the liftgate release relay. When the relay energizes voltage is applied through CKT 1576 (BLK) to the liftgate release motor, since CKT 1737 (YEL) grounds through the Park/Netural Position Switch to CKT 150 (BLK) to G105, the liftgate is released. The vehicle must be in Park or Netural for the liftgate to release.

When the rear unlock button is depressed twice, the BCM sends a voltage signal through CKT 253 (BRN) to the cargo door lock relay. When the relay energizes voltage is applied through CKT 56 (BLK) to the cargo door lock motor, since CKT 295 (GRY) grounds through the door lock relay to CKT 150 (BLK) to G202, the cargo door lock motor unlocks.

When the lock button on the transmitter is depressed, the BCM sends a voltage signal through CKT 780 (ORN/BLK) to the door lock relay. This energizes the door lock coil and voltage is sent through CKT 295 (GRY) to the LF, RF, RR, LR and the cargo door lock motors. Since CKT 694 (TAN) internally grounds the LF door lock motor in the BCM, CKT 294 (TAN) grounds the RF, RR and LR door lock motors through the door lock relay to CKT 150 (BLK) to G202 and CKT 56 (BLK/WHT) grounds the cargo door lock motor through the remote control door lock receiver back to CKT 294 (TAN), all doors lock.

When the door lock button is depressed, all doors will lock as described above and also the BCM will provide a ground signal through CKT 28 (BLK) to the horn relay which will sound the horn.

Keyless Entry System Circuit Description Except Luxury

The remote control door lock receiver is supplied battery voltge at all times from the PWR ACCY circuit breaker in the I/P fuse block through CKT 540 (ORN) to cavity E and also cavity F if equipped with cargo doors. If equipped with a liftgate, cavity F is powered from the CIG LTR fuse 13 through CKT 640 (ORN).

The remote control door lock receiver is supplied KEY ON power from the GAUGES fuse 4 in the I/P fuse block through CKT 39 (PNK) to cavity J

The remote control door lock receiver is supplied ground from G202 through CKT 150 (BLK) to cavity N

When the unlock button on the transmitter is depressed once, the remote control door lock receiver sends a voltage signal through CKT 694 (TAN) to the LF door lock motor. Since CKT 295 (GRY) grounds through the door lock relay to CKT 150 (BLK) to G202, the drivers door unlocks.

When the unlock button on the transmitter is depressed twice, the remote control door lock receiver un locks the driver door as described above and also sends a voltage signal through CKT 194 (WHT) to the door lock relay. This energizes the door unlock coil and voltage is sent through CKT 294 (TAN) to the RF, RR and LR door lock motors and to the remote control door lock receiver cavity H. The remote control door lock receiver then sends a voltage signal through CKT 56 (BLK/WHT) to the cargo door lock motor. Since CKT 295 (GRY) grounds through the door lock relay to CKT 150 (BLK) to G202, the passenger and cargo door lock motors unlock.

When the rear unlock button is depressed twice, the remote control door lock receiver sends a voltage signal through CKT 1576 (BLK) to the liftgate release motor. Since CKT 1737 (YEL) grounds through the Park/Netural Position Switch to CKT 150 (BLK) to G105, the liftgate is released. The vehicle must be in Park or Netural for the liftgate to release.

When the rear unlock button is depressed twice, the remote control door lock receiver sends a voltage signal through CKT 56 (BLK/WHT) to the cargo door lock motor. Since CKT 295 (GRY) grounds through the door lock relay to CKT 150 (BLK) to G202, the cargo door lock motor unlocks.

When the lock button on the transmitter is depressed, the remote control door lock receiver sends a voltage signal through CKT 195 (LT BLU) to the door lock relay. This energizes the door lock coil and voltage is sent through CKT 295 (GRY) to the LF, RF, RR, LR and the cargo door lock motors. Since CKT 694 (TAN) internally grounds the LF door lock motor in the remote control door lock receiver, CKT 294(TAN) grounds the RF, RR and LR door lock motors through the door lock relay to CKT 150 (BLK) to G202 and CKT 56 (BLK/WHT) grounds the cargo door lock motor through the remote control door lock receiver back to CKT 294 (TAN), all doors lock.

When the door lock button is depressed, all doors will lock as described above and also the remote control door lock receiver will provide a ground signal through CKT 28 (BLK) to the horn relay which will sound the horn.

This feature can be turned ON or OFF when programming the remote control door lock receiver. Refer to Transmitter Programming

When the door unlock button on the transmitter is depressed, the remote control door lock receiver provides a ground on CKT 156 (WHT) to turn the courtesy lamps on. This provides courtesy lighting for approximately 30 seconds before timing out. Courtesy lighting can also be cancelled by a KEY ON ignition cycle. The dome lamp defeat switch has no effect on the courtesy lighting that is activated by a remote transmission from the transmitter. The remote control door lock receiver acts in much the same way as the interior lamp control module in that it receives a switched ground signal on CKT 157 (GRY) through the dome lamp defeat switch to CKT 328 (PPL) from the door jamb switches and in turn grounds CKT 156 (WHT) to turn the courtesy lamps on. However if the dome lamp defeat switch is ON the remote control door lock receiver will not see the switched ground signal from the door jamb switches when a door is opened and no courtesy lighting will be activated.

The remote control door lock receiver is connected to the DLC through CKT 1455 (BLK/WHT). When this circuit is grounded it allows the remote control door lock receiver to be programmed. Refer to Transmitter Programming .