Keyless Entry: Description and Operation

POWER SUPPLY AND GROUND
Power is supplied at all times
^ through 1O A fuse [No. (11) located in the fuse block (J/B)]
^ to multi-remote control relay-1 terminals (1), (3) and (6), and multi-remote control relay-2 terminal (2)
Terminals (2) of multi-remote control relay-1 and relay-2 are connected to BCM terminal (11). Power is supplied at all times
^ through 7.5 A fuse (No. (65) , located in the fuse and fusible link box)
^ to theft warning horn relay terminal (1).
Theft warning horn relay terminal (2) is connected to Body Control Module (BCM) terminal (13).
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).
Trunk lid opener actuator terminal (1) is connected to multi-remote control unit terminal (5) BCM is connected to Multi-remote control unit, driver door control unit, passenger door control unit, rear LH door control unit and rear RH door control unit as DATA LINES A and B.
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 (23).
When any of the four door switches is in OPEN position, ground is supplied
^ to BCM terminal (21)
^ 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) and (M73).
When the passenger side door lock actuator (door unlock sensor) is in UNLOCKED position, ground is supplied
^ to passenger door control unit (LCUO2) 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) and (M73).
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 terminal (4)
^ 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 (LCUO5) terminal (7).
The multi-remote control system controls operation of the
^ power window
^ power door lock
^ trunk lid opener
^ panic alarm
^ hazard reminder

OPERATING PROCEDURE
Multi-remote control unit 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 and B. Power door lock operation
Multi-remote control unit is connected to BCM, driver door control unit, passenger door control unit and rear LH/RH door control units as DATA LINES A and B.
^ 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 will then send a LOCK signal
^ from its terminals (1) and (3) (DATA LINES A and B)
^ to each door control unit terminal (1) and (2)
When multi-remote control unit (LCU05) receives a LOCK signal, ground is supplied
^ to multi-remote control relays-1 and -2 terminal (2)
^ through BCM terminal (11).
Multi-remote control relays are now energized and door lock actuators lock all doors. (Hazard warning lamps flash twice as a reminder - HAZARD REMINDER.)
When an UNLOCK signal is sent from remote controller, door lock actuators unlock all doors. For detailed description, refer to "POWER DOOR LOCK - IVMS".

Trunk lid opener operation
Ground is supplied
^ to trunk lid opener actuator terminal (1)
^ through multi-remote control unit.
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".