Keyless Entry: Description and Operation

POWER SUPPLY AND GROUND
Body Control Module (BCM) is connected to Multi-remote control unit (LCU05) and each door control unit (LCU01, 02, 03 and 04) via DATA LINE A-1 or A-2.
Power is supplied at all times
^ through 7.5 A fuse [No. (40), located in the fuse block (J/B)]
^ to key switch terminal (1)
When the key switch is in ON position (ignition key is inserted in key cylinder), power is supplied
^ through key switch terminal (2)
^ to BCM terminal (31)
When any of the four door switches is in OPEN position, ground is supplied
^ to BCM terminal (35)
^ through door switches body grounds.
When the driver side door lock actuator (door unlock sensor) is in UNLOCKED position, ground is supplied
^ to driver door control unit (LCU01) terminal (4)
^ through driver side door lock actuator (door unlock sensor) terminal (2)
^ to driver side door lock actuator (door unlock sensor) terminal (4)
^ through body grounds (M13), (M73) and (M111).
When the passenger side door lock actuator (door unlock sensor) is in UNLOCKED position, ground is supplied
^ to passenger door control unit (LCU02) terminal (4)
^ through passenger side door lock actuator (door unlock sensor) terminal (2),
^ to passenger side door lock actuator (door unlock sensor) terminal (4)
^ through body grounds (M13), (M73) and (M111).
When the rear door lock actuator LH and/or RH (door unlock sensor) is in UNLOCKED position, ground is supplied
^ to rear LH and/or RH door control unit (LCU04/03) terminal (5)
^ through rear door lock actuator LH (door unlock sensor) terminal (2) and/or
^ through rear door lock actuator RH (door unlock sensor) terminal (2)
^ to rear door lock actuator LH (door unlock sensor) terminal (4) and/or
^ to rear door lock actuator RH (door unlock sensor) terminal (4)
^ through body grounds (B16) and (B19).
Remote controller signal input
^ through window antenna
^ to multi-remote control unit (LCU05) terminal (7).

OPERATING PROCEDURE
The multi-remote control system controls operation of the
^ power door lock
^ power window
^ hazard reminder
^ trunk lid opener
^ panic alarm
Multi-remote control unit (LCU05) can receive signals from remote controller when key switch is in OFF position (key not in cylinder). And it sends the signals to BCM and LCUs as DATA LINES A-1 or A-2.

Power door lock operation
^ Key switch OFF signal (ignition key is not in key cylinder)
^ Door switch CLOSE signal (all doors closed)
The two above signals are already input into BCM. At this point, multi-remote control unit receives a LOCK signal from remote controller. Multi-remote control unit (LCU05) will then send a LOCK signal to BCM via DATA LINE A-1.
When an UNLOCK signal is sent from remote controller, door lock actuators unlock all doors and interior lamp illuminates if interior lamp switch is in DOOR position.
For detailed description, refer to "POWER DOOR LOCK - IVMS".

Power window operation
When an UNLOCK signal from remote controller is input into multi-remote control unit (LCU05) continuously more than 1.5 seconds, front power windows lower the windows.

Hazard reminder
Power is supplied at all times
^ through 10 A fuse [No. (11), located in the fuse block (J/B)]
^ to multi-remote control relay-1 terminals (1), (3) and (6).
When multi-remote control unit (LCU05) receives a LOCK signal, ground is supplied
^ to multi-remote control relay-1 terminal (2)
^ through BCM terminal (18).
Multi-remote control relay is now energized and door lock actuators lock all doors. (Hazard warning lamps flash twice as a reminder.)

Trunk lid opener operation
Power is supplied at all times
^ through 15 A fuse [No. (37) ,located in the fuse block (J/B)]
^ to trunk lid opener actuator terminal (2).
When TRUNK OPEN signal is sent from remote controller, ground is supplied
^ to trunk lid opener actuator terminal (1)
^ through multi-remote control unit (LCU05) terminal (5)
When power and ground are supplied, trunk lid opener actuator opens trunk lid.

Panic alarm operation
Multi-remote control system activates horn and headlamps intermittently when an alarm signal is sent from remote controller to multi-remote control system.
For detailed description, refer to "THEFT WARNING SYSTEM - IVMS".