Maxima GXE V6-3.0L (VQ30DE) (1999)
/Page-2059001.png)
Power Locks: Description and Operation
POWER SUPPLY AND GROUND
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)
Power is supplied to BCM (Body Control Module) terminal (31) through key switch terminal (2) when key switch is in ON position (ignition key
is inserted in the key cylinder).
BCM is connected to LCU01, LCU02, LCU03 and LCU04 as DATA LINE A-1 or A-2.
Ground is supplied
^
to BCM terminal (29) or (16)
^
from front LH or RH door switch terminal (2)
^
through front LH or RH door switch terminal (3) when door switch is in OPEN position and
^
through body grounds (B16) and (B19).
Ground is supplied
^
to driver door control unit (LCU01) terminals (6) or (5)
^
from front LH door key cylinder switch terminals (1) or (2) when door key cylinder is in BETWEEN FULL STROKE AND N position
^
through front LH door key cylinder switch terminal (4) and
^
through body grounds (M13), (M73) and (M111).
Front RH door key cylinder switch will supply ground to passenger door control unit (LCU02) in the same manner as driver side.
Ground is supplied
^
to driver door control unit (LCU01) terminal (4)
^
from door unlock sensor (in the front LH door lock actuator) terminal (2) when door lock is in UNLOCKED position
^
through front LH door lock actuator terminal (4) and
^
through body grounds (M13), (M73) and (M111).
Front passenger door unlock sensors (in the door lock actuators) will supply ground to passenger door control unit (LCU02) in the same manner as
driver side.
When lock/unlock signal is sent to BCM or LCU, BCM sends a lock/unlock signal to LCUs via DATA LINE A-1 or A-2. LCUs then supply
power and ground to each door lock actuator.
OPERATION
^
The lock & unlock switch (SW) on driver's door trim can lock and unlock all doors.
^
With the lock knob on front LH or RH door set to "LOCK", all doors are locked. (Signals from front door unlock sensor)
^
With the door key inserted in the key cylinder on front LH or RH door, turning it to "LOCK", will lock all doors; turning it to "UNLOCK"
once unlocks the corresponding door; turning it to "UNLOCK" again within 5 seconds after the first unlock operation unlocks all of the other
doors. (Signals from door key cylinder switch)
However, if the ignition key is in the ignition key cylinder and one or more of the front doors are open, setting the lock & unlock switch, lock
knob, or the door key to "LOCK" locks the doors once but then immediately unlocks them. (Combination signals from key switch, front LH or
RH door switch and LH or RH door unlock sensor) - (KEY REMINDER DOOR SYSTEM)
