54-226
CHASSIS ELECTRICAL
-
Theft-alarm System
5. DOOR LOCK ACTUATOR SWITCH INPUT CIRCUIT
Description of operation
When a door is locked by the lock knob or the key, the door
lock actuator switch is switched OFF, and HIGH-level signals
are sent to the ECU. These signals activate the timer circuit
of the
R
ECU, thereby causing the activation circuit to function,
thus
R
activating the door lock actuator of all doors.
ECU terminal voltage (Connection condition of the ECU con-
nector).
ECU
terminal
No.
13
14
!
I
t
(
(
Signal
Door lock ac-
tuator switch
(driver door)
loor
lock
ac-
uator switch
:passenger
joor)
Condition Terminal
voltage
Door
Lock:
5
V’
lock ac- OFF
tuator
switch
Unlock: ON 0 V
Door
Lock:
‘5
v*
lock ac- OFF
tuator
switch
Unlock: ON 0 V
*
Measurement is not possible by using a voltmeter, but is possible
by using an oscilloscope.
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