CIRCUIT DIAGRAMS
-
Central Door Locking Circuit
237
OPERATION
/
L
i!
<Vehicles without
keyless
entry system>
l
When the door lock switch is set to the LOCK
side (or UNLOCK side), the LOCK side (or
UNLOCK side) of the door lock relay is turned
ON and the door actuators of all doors operate.
l
If the driver seat side door (or assistant seat
side door) is opened and the driver seat side
inside lock knob (or assistant seat side inside
<Vehicles
with
keyless
entry system>
0
,’
id
0
With the driver’s and front passenger’s doors
unlocked, press the LOCK switch of the
transmitter, and the door lock signal output (0
V) will be sent from the
keyless
entry control
unit terminal No. 12 closing the door lock power
relays 1 and 2 to lock the driver’s and front
passenger’s doors.
While the R.H. and L.H. doors are in the locked
state, press the UNLOCK switch of the
transmitter once, and the DOOR UNLOCK
switch signal (0 V) will be sent from the
keyless
entry control unit terminal No. 14 closing the
door lock power relay 2 to unlock the driver’s
door.
Under the above-mentioned conditions, further
press the UNLOCK switch of the transmitter,
and the DOOR UNLOCK signal output (0 V)
will be sent from the
keyless
entry control unit
terminal No. 13 closing the door lock power
relay 1 to lock the front passenger’s door.
When the
keyless
entry system is operated to
turn the driver’s door lock switch from the
UNLOCK position to the LOCK position, the
lock knob) is locked with the key inserted in
the ignition switch, the ETACS unit grounds the
unlock side circuit of the door lock relay to unlock
all doors. This way, failure to remove the key
is prevented.
dome light/foot light blinking signal output
(system voltage) will be sent twice from the
keyless
entry control unit terminal No. 11 when
the door lock switch is turned from the LOCK
position to the UNLOCK position, the lighting
signal output (0 V) will be provided for approx.
3
seconds.
NOTE
The dome light winks or comes on when the dome
light switch is in the DOOR interlock position.
However, the dome light does not wink while it
.is
ON for 6 seconds after closing the door by ETACS
function.
Besides the above-mentioned operations, the
keyless
entry control unit has the following functions.
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If any door is not opened or closed within 30
seconds from unlocking the door by means of
the
keyless
entry system, the door is
automatically locked.
In addition, if the
cryptographic code other than the code stored
in the receiver memory is received 30 times
in one minute continuously, operation of the
unit is suspended for 10 minutes.
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Operation is also suspended if the ignition key
remains inserted (key reminder switch: OFF)
and either door is left open (door switch: ON).
TROUBLESHOOTING HINTS
<Vehicles without
keyless
entry system>
Phenomenon
Inspection method
One of the door lock actuators fails to operate.
0
Check the door actuator which fails to operate.
No unlock operation can
be
made by pressing door lock
0
knob after fulfilment of following conditions.
Check the key reminder switch input signal.
0
Check the key reminder switch. (Refer to GROUP
0
Insertion of key in ignition switch (key reminder switch
54-Ignition Switch.)
OFF)
0
0
Opening of door (door switch ON)
Check the front door switch input signal.
0
Check the front door switch. (Refer to GROUP
42-Door Assembly)
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