Mitsubishi Montero (2004+). Manual — part 755
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-277
INSPECTION PROCEDURE H-4: Rear Wiper and Washer: Rear washer does not operate.
NOTE: This troubleshooting procedure requires 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
Rear Washer Drive Circuit
AC000759
CONNECTOR: D-111
AC
ACX02285
CONNECTOR: D-221
AU
JUNCTION BLOCK (FRONT VIEW)
SYMPTOM PROCEDURES
TSB Revision
SIMPLIFIED WIRING SYSTEM (SWS)
54B-278
.
CIRCUIT OPERATION
The rear washer switch sends a signal through the
column-ECU (incorporated in the column switch) to
the ETACS-ECU. If the column-ECU sends a rear
washer switch "ON" signal to the ETACS-ECU, the
ETACS-ECU turns on the relay (incorporated in the
ETACS-ECU), thus causing the rear washer motor to
be turned on.
.
TECHNICAL DESCRIPTION (COMMENT)
If the rear washer does not work normally, the rear
washer motor, the column switch (windshield wiper
and washer switch) or the front-ECU may be defec-
tive.
.
TROUBLESHOOTING HINTS
• The rear washer motor may be defective
• The column switch (windshield wiper and washer
switch) may be defective
• The ETACS-ECU may be defective
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
STEP 1. Verify the rear wiper operation.
Q: Does the rear wiper operate normally?
YES : Go to Step 2.
NO : Refer to Inspection Procedure H-1 "Rear wiper does
not work at all
ACX02286
CONNECTOR: D-222
AC
JUNCTION BLOCK (REAR VIEW)
ACX02290
CONNECTOR: G-10
AB
ACX02293
CONNECTOR: I-08
AE
SYMPTOM PROCEDURES
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SIMPLIFIED WIRING SYSTEM (SWS)
54B-279
STEP 2. Check the input signal by using "FUNCTION
DIAG." menu of the SWS monitor.
Set each switch to the following condition before checking input
signals from the rear washer switch:
• Ignition switch: ACC
• Rear washer switch: ON
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 "REAR WASHER."
1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "REAR WIPER."
6. Select "REAR WASHER."
(4) Check that normal conditions are displayed on the item
described in the table below.
Q: Are normal conditions displayed?
YES : Go to Step 3.
NO : Refer to Inspection Procedure O-7 "ETACS-ECU
does not receive a signal from the rear washer switch
STEP 3. Check rear washer motor connector I-08 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is rear washer motor connector I-08 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 rear washer works normally.
ITEM NO. ITEM NAME
NORMAL CONDITION
ITEM 14
REAR WASH.SW ON
AC309091
MB991911
MB991827
MB991824
AB
MB991806
MB991862
DATA LINK
CONNECTOR
(16-PIN)
DATA LINK
CONNECTOR
(13-PIN)
ACX02293 AT
CONNECTOR: I-08
I-08 (B)
2
1
(HARNESS SIDE)
I-08 (B)
SYMPTOM PROCEDURES
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SIMPLIFIED WIRING SYSTEM (SWS)
54B-280
STEP 4. Check the rear washer motor.
(1) Disconnect rear washer motor connector I-08.
(2) Fill the washer tank with washer fluid.
(3) Connect rear washer motor connector terminal 2 to the
positive battery terminal, and terminal 1 to the negative
battery terminal, respectively. Washer fluid should spray
out.
Q: Does the rear washer motor operate normally?
YES : Go to Step 5.
NO : Replace the rear washer motor. Verify that the rear
washer works normally.
STEP 5. Check the ground circuit to the rear washer motor.
Test at rear washer motor connector I-08.
(1) Disconnect rear washer motor connector I-08 and measure
the resistance available at the wiring harness side of the
connector.
(2) Measure the resistance value between terminal 1 and
ground.
• The resistance should equal 2 ohm or less.
Q: Is the measured resistance 2 ohms or less?
YES : Go to Step 7.
NO : Go to Step 6.
ACX02293 AT
CONNECTOR: I-08
I-08 (B)
2
1
(HARNESS SIDE)
I-08 (B)
1
2
ACX00455
ACX02293 AT
CONNECTOR: I-08
I-08 (B)
2
1
(HARNESS SIDE)
I-08 (B)
AC200953
2
1
AD
CONNECTOR I-08
(HARNESS SIDE)
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