Mitsubishi Outlander XL. Manual - part 845

INSPECTION PROCEDURE 1: The windshield wipers do not work at all.

M15102100008USA0000010001

WINDSHIELD
WIPER
MOTOR

ACC
RELAY3

WINDSHIELD
WIPER
AUTOMATIC
STOP RELAY

CIRCUIT
BRAKER

ZC603306

WINDSHIELD
WIPER
SPEED
SWITCHING
RELAY

ETACS-ECU

C-309

A-08

BLA

CK-

WHITE

BLUE

GREEN

YELLO

W

WHITE

BLA

CK

1

4

3

5

Windshield Wiper Power Supply Circuit

FUSIBLE
LINK

34

0000

WIPER AND WASHER

51B-13

DIAGNOSIS

ZC6008720003

Connector: A-08

ZC6008780022

Connector: C-304

 

ZC600878

Connector: C-309

C-309 (B)

0009

 

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 column-
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 regardless of
the windshield wiper and washer switch positions
("LO" or "HIGH").

TECHNICAL DESCRIPTION (COMMENT)
If  the  windshield  wiper  does  not  work  at  all,  the
windshield  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  terminals
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

51B-14

WIPER AND WASHER

DIAGNOSIS

STEP 1. Use the scan tool MB991958 to check if an ETACS-
related diagnostic trouble code is set.

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

Connect  the  scan  tool.  Refer  to  GROUP  54Ad  ETACS,
"Diagnostic function P.54Ad-5."

Q:Is the diagnostic trouble code set?

YES:

 Diagnose the ETACS-ECU. Refer to GROUP 54Ad ETACS,

"Diagnostic trouble code chart P.54Ad-8."

NO:

 Go to Step 2.

STEP 2. Check the input signal related to the windshield
wiper operation.

｠

Ignition switch: ACC

Item No.

Item name

Normal condition

Item 288

ACC switch

ON

Item 235

Front wiper ACT

ON

OK: Normal condition is displayed.

Q:Is the check result normal?

NO:

 Go to Step 3.

YES:

 Refer to GROUP 54Ad - ETACS, Input signal

procedures P.54Ad-61.

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 P.00E-2. Verify
that the windshield wiper works normally.

STEP 4. Check the windshield wiper motor.

(1)

Disconnect windshield wiper motor connector A-08.

WIPER AND WASHER

51B-15

DIAGNOSIS

4

5

3

1 2

4

5

3

1 2

4

5

3

1 2

ZC6002730000

Operation check

Low speed

High speed

(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.

ZC6033610000

Harness side: A-08

(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.

51B-16

WIPER AND WASHER

DIAGNOSIS