Mitsubishi Electric 55624R(S)-MF Service Manual page 174

6. DOOR LOCK ACTUATOR SWITCH INPUT CIRCUIT
Sub fusible link @
control unit
(electronic
control unit)
THEFT-ALARM SYSTEM
Description of operation
When a door is locked by the lock knob or the key, the door lock
actuator switch is switched
sent to the ECU. These signals activate the timer circuit of the
ECU, there by causing the activation circuit to function, thus
activating the door lock actuator of all doors.
ECU terminal voltage (Connection condition of the ECU
connector)
ECU
terminal No.
Measurement is not possible by using a voltmeter, but is possible
by using an oscilloscope.
Checking the door switch circuit (Disconnect the connector of
the ECU and check at the wiring harness side)
Checking individual part:
Door lock actuator switch - Refer to GROUP 42-Central door
locking system.
TSB Revision
Signal Condition
I
actuator _
switch
switch
(rear door)
Door lock
actuator
Resistance @-ground
Door lock
actuator
Resistance @-ground
switch
Door lock
actuator
Resistance @-ground
switch
Terminal
voltage
Lock:
OFF
Unlock:
ov
ON
Door lock
actuator
switch
Lock: No
Door lock
continuity
OFF
actuator
Unlock:
switch
Continuity
ON
Lock: No
Door lock
OFF continuity
actuator
Unlock:
switch
Continuity
ON