Mitsubishi Montero (2004+). Manual — part 719
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-133
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
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
Central Door Lock (Door Lock Switch) Circuit
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-134
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 MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991502 to the data link connector
(16-pin).
(2) Operate scan tool MB991958 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 MB991958 sounds or not.
Q: Does scan tool MB991958 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)
AC307591 AB
MB991911
DATA LINK
CONNECTOR
MB991824
MB991827
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-135
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
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: Vehicle Communication Interface (V.C.I.)
• MB991827: MUT-III USB Cable
• MB991911: MUT-III Main Harness B
Central Door Lock (Door Lock Key Cylinder Switch) Circuit
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-136
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 MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991502 to the data link connector
(16-pin).
(2) Operate scan tool MB991958 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 MB991958 sounds.
Q: Does scan tool MB991958 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
AC307591 AB
MB991911
DATA LINK
CONNECTOR
MB991824
MB991827
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