Mitsubishi Montero (2002-2004). Manual — part 298
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
54Bb-239
STEP 11. Check the wiring harness between windshield
wiper motor connector B-12 (terminal 1) and front-ECU
connector A-08X (terminal 28).
NOTE: Also check intermediate connector A-05 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connector A-05 is damaged, repair or
replace the damaged component(s) as described in GROUP
00E, Harness Connector Inspection
Q: Is the wiring harness between windshield wiper motor
connector B-12 (terminal 1) and front-ECU connector A-
08X (terminal 28) in good condition?
YES : Go to Step 12.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the windshield wiper operates normally when the
windshield wiper switch is moved to each position.
AC205116 AD
CONNECTOR: B-12
B-12 (B)
(HARNESS SIDE)
B-12 (B)
1
2
3
4
5
AC205138
CONNECTOR: A-08X
AC
BATTERY
FRONT-ECU
A-08X
A-08X
AC205142AC
CONNECTOR: A-05
A-05(B)
A-05(B)
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
54Bb-240
STEP 12. Check the wiring harness between windshield
wiper motor connector B-12 (terminal 4) and front-ECU
connector A-08X (terminal 27).
Q: Is the wiring harness between windshield wiper motor
connector B-12 (terminal 4) and front-ECU connector A-
08X (terminal 27) in good condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. Verify that
the windshield wiper operates normally when the
windshield wiper switch is moved to each position.
AC205116 AD
CONNECTOR: B-12
B-12 (B)
(HARNESS SIDE)
B-12 (B)
1
2
3
4
5
AC205138
CONNECTOR: A-08X
AC
BATTERY
FRONT-ECU
A-08X
A-08X
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
54Bb-241
INSPECTION PROCEDURE G-2: Windshield Wiper and Washer: The windshield wipers do not work
when the windshield wiper switch is at "INT" or "MIST" position or the windshield washer switch is at
"ON" position. However, the wipers work at low speed when the windshield wiper switch is at "LO" or
"HI."
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
.
TECHNICAL DESCRIPTION (COMMENT)
The system may be at fail-safe mode as the SWS
communication line is defective.
If the system can not receive any signal from the col-
umn switch (windshield wiper and washer switch)
due to a open circuit in the SWS communication line
or other reasons, the system will enter the fail-safe
mode when the ignition switch is at the "ACC" posi-
tion.
.
TROUBLESHOOTING HINTS
• 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
Windshield Wiper Motor Drive Circuit
SYMPTOM PROCEDURES
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SWS SYMPTOM PROCEDURES
54Bb-242
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB991502: Scan Tool (MUT-II)
• MB991862: SWS Monitor Kit
Use scan tool MB991502 to select "ECU COMM CHK" on
the SWS monitor display.
Check the following ECUs:
• Column-ECU
• Front-ECU
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) Turn the ignition switch to the "ON" position.
(4) Operate scan tool MB991502 according to the procedure
below to display "ECU COMM CHECK."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "ECU COMM CHK".
(5) Scan tool MB991502 should show "OK" on the "ECU
COMM CHK" menus for both the "COLUMN ECU" and the
"FRONT ECU" menus.
Q: Is "OK" displayed on the "COLUMN ECU" and "FRONT
ECU" menu?
"OK" is displayed for all the items : Replace the front-
ECU. Verify that the windshield wiper works normally.
"NG" is displayed on the "COLUMN ECU" menu : Refer
to Inspection Procedure A-2 "Communication with
column switch (column-ECU) is not possible
"NG" is displayed on the "FRONT ECU" menu : Refer to
Inspection procedure A-4 "Communication with front-
ECU is not possible
AC204222AB
16-pin
13-pin
MB991502
MB991862
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