Mitsubishi Montero (2004+). Manual — part 746
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-241
Use scan tool MB991958 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 MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect the special tool. Refer to "How to connect SWS
monitor
.
(2) Turn the ignition switch to the "ON" position.
(3) Operate scan tool MB991958 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".
(4) Scan tool MB991958 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
AC309091
MB991911
MB991827
MB991824
AB
MB991806
MB991862
DATA LINK
CONNECTOR
(16-PIN)
DATA LINK
CONNECTOR
(13-PIN)
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-242
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 MB991958 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
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-243
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
• 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
• MB991813: SWS Monitor Kit
• MB991806: SWS Monitor Cartridge
• MB991812: SWS Monitor Harness (For Column-ECU)
• MB991822: Probe Harness
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-244
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 MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect the special tool. Refer to "How to connect SWS
monitor
(2) Connect SWS monitor kit MB991862 to the data link
connector (13-pin).
(3) Operate scan tool MB991958 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
STEP 2. Check windshield wiper motor connector B-12 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is windshield wiper motor connector B-12 in good
condition?
YES : Go to Step 3.
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.
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
AC309091
MB991911
MB991827
MB991824
AB
MB991806
MB991862
DATA LINK
CONNECTOR
(16-PIN)
DATA LINK
CONNECTOR
(13-PIN)
AC205116 AD
CONNECTOR: B-12
B-12 (B)
(HARNESS SIDE)
B-12 (B)
1
2
3
4
5
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