Mitsubishi Montero (2004+). Manual - part 743

 

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Mitsubishi Montero (2004+). Manual - part 743

 

 

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-229

AC200083AC

ON

OFF

ON

OFF

ON

OFF

ON

WINDSHIELD WASHER 
SWITCH

WINDSHIELD WASHER 
RELAY

WINDSHIELD WIPER 
AUTO-STOP SIGNAL

WINDSHIELD WIPER 
DRIVE SIGNAL

OFF

WHEN WINDSHIELD WIPER 
SWITCH IS OFF

WHEN WINDSHIELD INTERMITTENT 
WIPER IS OPERATING

T1: Intermittent time

T1

T1

T1

T

T

t

t

WHEN WIPER SWITCH IS OFF

WHEN WIPER SWITCH IS INT

WHEN WIPER 
SWITCH IS LO 
OR HI

t

0.3 
second 
or less

0.3 - 0.5 
second

0.5 - 0.7 
second

0.7 
second

Less 
than 0.2 
second

0.3 - 0.5 
second

0.5 - 0.7 
second

0.7 
second

T

0 second 1 second 2 

seconds


seconds

0 second 1 second 2 

seconds


seconds

3 seconds

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-230

General circuit diagram for the windshield wiper and washer

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-231

INSPECTION PROCEDURE G-1: Windshield Wiper and Washer: The windshield wiper does not work 
at all.

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 

P.54B-10

."

Windshield Wiper Motor Circuit

FRONT-ECU

CIRCUIT
BREAKER

IGNITION 
SWITCH (ACC)

JUNCTION
BLOCK

WINDSHIELD
WIPER MOTOR

RELAY
BOX

WIPER SPEED 
SWITCHING 
RELAY

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-232

.

CIRCUIT OPERATION

• The windshield wiper and washer switch sends a 

signal through the column-ECU (incorporated in 
the column switch) to the front-ECU. If the col-
umn-ECU sends a windshield wiper and washer 
switch "ON" signal to the front-ECU, the 
front-ECU turns on the relay (incorporated in the 
front-ECU), thus causing the windshield wiper 
and washer motor to be turned on.

• If the SWS communication line is defective, the 

front-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 front-ECU may be defec-
tive.

.

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

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)

AC204170

CONNECTOR : D-28

BB

ACX02285

CONNECTORS: D-208, D-221

AI

D-208

JUNCTION BLOCK (FRONT VIEW)

D-221

 

 

 

 

 

 

 

Content   ..  741  742  743  744   ..