Mitsubishi Montero (2002-2004). Manual — part 299
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
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INSPECTION PROCEDURE G-3: Windshield Wiper and Washer: Any of the windshield wiper switch
positions is defective.
NOTE: This troubleshooting procedure requires the
use of scan tool MB991502 and SWS monitor kit
MB991862. For details on how to use the SWS mon-
itor, refer to "How to use SWS monitor
.
Windshield Wiper Motor Drive Circuit
AC205142AB
CONNECTOR: A-05
A-05(B)
AC205138
CONNECTOR: A-08X
AB
BATTERY
FRONT-ECU
A-08X
AC205116 AB
CONNECTOR: B-12
B-12 (B)
SYMPTOM PROCEDURES
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TECHNICAL DESCRIPTION (COMMENT)
If either of the windshield wiper switch positions is
defective, the windshield wiper motor, column switch
(windshield wiper and washer switch) or the front-
ECU may be defective.
.
TROUBLESHOOTING HINTS
• The windshield wiper motor may be defective
• The column switch (windshield wiper and washer
switch) may be defective
• The front-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
• MB991502: Scan Tool (MUT-II)
• MB991862: SWS Monitor Kit
STEP 1. Check the input signal by using "DATA LIST"
menu of the SWS monitor.
Turn the ignition switch to the ACC position before checking
input signals from the windshield wiper 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) Connect SWS monitor kit MB991862 to the data link
connector (13-pin).
(3) Operate scan tool MB991502 according to the procedure
below to display "COLUMN ECU."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "DATA LIST."
5. Select "COLUMN ECU."
(4) Check that normal conditions are displayed on the items
described in the table below.
Q: Are normal conditions displayed for "INT WIPER SW",
"LO WIPER SW", "HI WIPER SW" and "MIST WIPER
SW"?
YES : Go to Step 2.
NO : Refer to Inspection Procedure O-7 "ETACS-ECU
does not receive a signal from the windshield mist
wiper switch
ITEM NO.
ITEM NAME
NORMAL
CONDITION
ITEM 05
INT WIPER SW
ON
ITEM 06
LO WIPER SW
ON
ITEM 07
HI WIPER SW
ON
ITEM 08
MIST WIPER SW
ON
AC204222AB
16-pin
13-pin
MB991502
MB991862
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
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STEP 2. Check the windshield wiper motor.
(1) Disconnect windshield wiper motor connector B-12.
(2) Connect a battery to the windshield wiper motor as shown.
Then check the windshield wiper motor operates normally
at high and low speeds.
Q: Does the windshield wiper motor operate normally?
YES : Go to Step 3.
NO : Replace the windshield wiper motor. Verify that the
windshield wiper operates normally when the
windshield wiper switch is moved to each position.
AC205116 AC
CONNECTOR: B-12
B-12 (B)
B-12 (B)
1
2 3
4
5
1
2 3
4
5
ACX02403
B-12
AB
LOW-SPEED
HIGH-SPEED
SYMPTOM PROCEDURES
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STEP 3. Check windshield wiper motor connector B-12 and
front-ECU connector A-08X for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are windshield wiper motor connector B-12 and front-
ECU connector A-08X in good condition?
YES : Go to Step 4.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the windshield wiper operates
normally when the windshield wiper switch is moved
to each position.
AC205138
CONNECTOR: A-08X
AC
BATTERY
FRONT-ECU
A-08X
A-08X
AC205116 AC
CONNECTOR: B-12
B-12 (B)
B-12 (B)
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