Mitsubishi Outlander GS45X. Manual — part 1353
WINDSHIELD WIPER AND WASHER
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EXTERIOR
51-35
.
CIRCUIT OPERATION
• The windshield wiper and washer switch sends a
signal through the column-ECU (incorporated in
the column switch) to the ETACS-ECU. If the col-
umn-ECU sends a windshield wiper and washer
switch "ON" signal to the ETACS-ECU, the
ETACS-ECU turns on the relay (incorporated in
the ETACS-ECU), thus causing the windshield
wiper and washer motor to be turned on.
• If the LIN communication line is defective, the
ETACS-ECU operates windshield wiper motor by
using the other communication lines (wiper
backup circuit) instead of that line. In this case,
the windshield wiper works at low speed regard-
less of the windshield wiper and washer switch
positions ("LO" or "HIGH").
.
TECHNICAL DESCRIPTION (COMMENT)
If the windshield wiper does not work at all, the wind-
shield wiper motor, column switch (windshield wiper
and washer switch) or the ETACS-ECU may be
defective.
.
TROUBLESHOOTING HINTS
• Trouble in input signal system
• The wiring harness or connectors may have
loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector
• The wiper motor may be defective
• The column switch may be defective
• The ETACS-ECU may be defective
DIAGNOSIS
Required Special Tools:
• MB991223: Harness Set
• MB992006: Extra Fine Probe
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: M.U.T.-III USB Cable
• MB991910: M.U.T.-III Main Harness A
AC901214
Connector: A-08
AB
ACA02655AK
Connectors: C-304, C-309
C-309 (B)
C-304
WINDSHIELD WIPER AND WASHER
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EXTERIOR
51-36
STEP 1. Use the scan tool MB991958 to check if an
ETACS-related diagnostic trouble code is set.
Connect the scan tool. Refer to GROUP 54A ETACS, "Diag-
nostic function
."
Q: Is the diagnostic trouble code set?
YES : Diagnose the ETACS-ECU. Refer to GROUP 54A
ETACS, "Diagnostic trouble code chart
."
NO : Go to Step 2.
STEP 2. Check the input signal related to the windshield
wiper operation.
• Ignition switch: ACC
OK: Normal condition is displayed.
Q: Is the check result normal?
NO : Go to Step 3.
YES : Refer to GROUP 54A
− ETACS, Input signal
procedures
.
STEP 3. Check windshield wiper motor connector A-08 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is windshield wiper motor connector A-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 windshield wiper works
normally.
ZC501967
AC404789
AC701411AB
MB991824
MB991827
MB991910
Data link
connector
Item No.
Item name
Normal condition
Item 288
ACC switch
ON
Item 235
Front wiper ACT
ON
WINDSHIELD WIPER AND WASHER
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EXTERIOR
51-37
STEP 4. Check the windshield wiper motor.
(1) Disconnect windshield wiper motor connector A-08.
(2) Connect a battery to the windshield wiper motor as shown.
Then check that the windshield wiper motor operates
normally at high and low speeds.
Q: Does the windshield wiper motor operate normally?
YES : Go to Step 5.
NO : Replace the windshield wiper motor. Verify that the
windshield wiper works normally.
STEP 5. Check the ground circuit to the windshield wiper
motor. Measure the resistance at the windshield wiper
motor connector A-08.
(1) Disconnect windshield wiper motor connector A-08 and
measure the resistance available at the wiring harness side
of the connector.
(2) Measure the resistance value between terminal 5 and
ground.
• The resistance should be 2 Ω or less.
Q: Is the measured resistance 2
Ω or less?
YES : Go to Step 7.
NO : Go to Step 6.
STEP 6. Check the wiring harness between windshield
wiper motor connector A-08 (terminal 5) and ground.
Q: Is the wiring harness between windshield wiper motor
connector A-08 (terminal 5) and ground 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 the
windshield wiper works normally.
4
5
3
1 2
4
5
3
1 2
4
5
3
1 2
AC702469 AB
High speed
Operation check
Low speed
AC702473AB
A-08
Harness side:
WINDSHIELD WIPER AND WASHER
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EXTERIOR
51-38
STEP 7. Check ETACS-ECU connector C-309 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector C-304 in good condition?
YES : Go to Step 8.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Harness Connector Inspection
. Verify that the windshield wiper works
normally.
STEP 8. Measure the voltage at ETACS-ECU connector
C-309.
(1) Disconnect ETACS-ECU connector C-309 and measure the
resistance available at the wiring harness side of the
connector.
(2) Measure the voltage between terminal 1 and ground.
• The voltage should measure approximately 12 volts
(battery positive voltage).
Q: Is the measured voltage approximately 12 volts (battery
positive voltage)?
YES : Go to Step 10.
NO : Go to Step 9.
STEP 9. Check the wiring harness between ETACS-ECU
connector C-309 (terminal 1) and the fusible link (34).
• Check the power supply line for open circuits.
Q: Is the wiring harness between ETACS-ECU connector
C-309 (terminal 1) and the fusible link (34) in good
condition?
YES : Intermittent malfunction. Refer to GROUP 00, How to
cope with intermittent malfunction
.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Cables and wire check
.
STEP 10. Check the wiring harness between ETACS-ECU
connector C-304 (terminals 5, 6) and windshield wiper
motor connector A-08 (terminals 1, 4).
• Check the input and output lines for open or short circuit.
Q: Is the wiring harness between ETACS-ECU connector
C-304 (terminals 5, 6) and windshield wiper motor
connector A-08 (terminals 1, 4) in good condition?
YES : Go to Step 11.
NO : Repair or replace the damaged component(s). Refer
to GROUP 00E, Cables and wire check
.
AC702474
Connector C-309
AD
(harness side)
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