Mitsubishi Montero (2002-2004). Manual — part 269
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SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
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INSPECTION PROCEDURE C-3: Central Door Locking System: All the doors do not lock or unlock
with the door lock switch operation.
.
TECHNICAL DESCRIPTION (COMMENT)
The door lock switch (built into the power window
switch) or the ETACS-ECU may be defective.
.
TROUBLESHOOTING HINTS
• The power window switch (door lock switch) may
be defective
• The ETACS-ECU may be defective
• The wiring harness or connectors may have
loose, corroded or damaged terminals, or termi-
nals pushed back in the connector
Central Door Lock (Door Lock Switch) Circuit
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SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
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DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991502: Scan Tool (MUT-II)
Check the input signal (by using the pulse check mode of
the monitor.)
Check the input signals from the door lock switch:
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector
(16-pin).
(2) Operate scan tool MB991502 as follows:
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."
(3) Move the driver's or the front passenger's door lock switch
from "LOCK" to "UNLOCK" or vice versa.
(4) Check scan tool MB991502 sounds or not.
Q: Does scan tool MB991502 sound when operating the
door lock switches as described?
YES : Replace the ETACS-ECU. Verify that all the doors
can now be locked and unlocked by the door lock
switch.
NO : Refer to Inspection Procedure O-7 "ETACS-ECU
does not receive a signal from the door lock switch
(incorporated in the power window main switch)
."
ACX01539
16-pin
MB991502
AI
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SYMPTOM PROCEDURES
TSB Revision
SWS SYMPTOM PROCEDURES
54Bb-125
INSPECTION PROCEDURE C-4: Central Door Locking System: All the doors do not lock or unlock
with just the door lock key cylinder key operation.
.
TECHNICAL DESCRIPTION (COMMENT)
The door lock switch (built into the power window
switch) or the ETACS-ECU may be defective.
.
TROUBLESHOOTING HINTS
• The door lock key cylinder switch may be defec-
tive
• The ETACS-ECU may be defective
• The wiring harness or connectors may have
loose, corroded or damaged terminals, or termi-
nals pushed back in the connector
Central Door Lock (Door Lock Key Cylinder Switch) Circuit
![](/vehicles/winoney/gang/ritherds/las.png)
SYMPTOM PROCEDURES
TSB Revision
SWS SYMPTOM PROCEDURES
54Bb-126
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991502: Scan Tool (MUT-II)
Check the input signal (by using the pulse check mode of
the monitor.)
Check the input signals from the door lock key cylinder switch.
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector
(16-pin).
(2) Operate scan tool MB991502 as follows:
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "PULSE CHECK."
(3) Use the driver's or passenger's door lock key cylinder to
lock and unlock the doors.
(4) Check that scan tool MB991502 sounds.
Q: Does scan tool MB991502 sound when operating the
door locks as described?
YES : Replace the ETACS-ECU. Verify that all the doors
can now be locked and unlocked by using each door
lock key cylinder switch.
NO : Refer to Inspection Procedure O-5 "ETACS-ECU
does not receive a signal from the driver's door, front
passenger's door lock key cylinder switch
ACX01539
16-pin
MB991502
AI
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