Mitsubishi Grandis. Manual — part 55

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-217

Prior to the wiring harness inspection, check the
intermediate connectors C-125 and junction block
connectors C-202, C-203, and repair if necessary.

• Check the power supply line to ignition switch

(ACC) for open circuit.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

Cope with Intermittent Malfunction

P.00-5

).

NO :

Repair the wiring harness.

Step 5. Connector check: A-15X front-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair the connector.

AC310613

AD

Connector: C-125 <LHD>

AC310628AB

Connector: C-125 <RHD>

AC310624

Connectors: C-202, C-203

AS

Junction block (Front view)

C-202

Harness side

C-202

C-203

Harness side

C-203

10

1

6

14

5

12

13

4

11

7

2

3

8

9

<LHD>

AC310619

Connectors: C-202, C-203

AS

Junction block (Front view)

C-203

C-202

Harness side

C-202

Harness side

C-203

10

1

6

14

5

12

13

4

11

7

2

3

8

9

<RHD>

AC311521AC

Connector: A-15X

Relay box side

21

22

23

24

25

26

27

28

29

30

31

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-218

Step 6. Check the wiring harness between A-01
windshield wiper motor connector terminal No.5
and A-15X front-ECU connector terminal No.23.

• Check the input signal lines.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the wiring harness.

Step 7. Retest the system.
Check that the windshield wipers stop at the
specified park position.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

Cope with Intermittent Malfunction

P.00-5

).

NO :

Replace the front-ECU.

AC310401

Connector: A-01 <LHD>

Harness side

AD

A-01 (GR)

AC310396

Connector: A-01 <RHD>

Harness side

AD

A-01 (GR)

AC311521AC

Connector: A-15X

Relay box side

21

22

23

24

25

26

27

28

29

30

31

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-219

Inspection Procedure G-4: The windshield wipers does not work normally.

CAUTION

Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

The windshield wiper motor, the column switch or the
front-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the windshield wiper motor

• Malfunction of the column switch

• Malfunction of the front-ECU

• Damaged harness wires and connectors

Windshield Washer Motor Circuit

FRONT-ECU

WINDSHIELD
WASHER MOTOR

WINDSHIELD
WASHER
RELAY

INPUT SIGNAL

WINDSHIELD WASHER

IGNITION
SWITCH (ACC)

Wire colour code
B : Black LG : Light green
G : Green L : Blue
W : White Y : Yellow
SB : Sky blue BR : Brown
O : Orange GR : Gray
R : Red P : Pink V : Violet

REAR
WASHER
RELAY

ETACS-ECU

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-220

Step 1. Pulse check
Check the input signals below which are related to
the windshield wiper.

OK: The MUT-III sounds or the voltmeter
needle fluctuates.

Q: Are the check result normal?

All the signals are received normally :

Go to Step

2.

The ignition switch (ACC) signal is not received. :

Refer to inspection procedure Q-1 "The
ignition switch (ACC) signal is not received

P.54B-416

."

Windshield mist wiper switch signal is not
received. :

Refer to inspection procedure Q-7 "The

column switch (windshield wiper washer
and rear wiper washer switch) signal is not
received

P.54B-439

."

Windshield intermittent wiper switch signal is not
received. :

Refer to inspection procedure Q-7 "The

column switch (windshield wiper washer
and rear wiper washer switch) signal is not
received

P.54B-439

."

Windshield low-speed wiper switch signal is not
received. :

Refer to inspection procedure Q-7 "The

column switch (windshield wiper washer
and rear wiper washer switch) signal is not
received

P.54B-439

."

Windshield high-speed wiper switch signal is not
received. :

Refer to inspection procedure Q-7 "The

column switch (windshield wiper washer
and rear wiper washer switch) signal is not
received

P.54B-439

."

Step 2. Connector check: A-01 windshield wiper
motor connector

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the defective connector.

Step 3. Check the windshield wiper motor
assembly.
Refer to GROUP 51

− Windshield wiper

P.51-25

.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Replace the windshield wiper motor
assembly.

Step 4. Retest the system.
Check that the windshield wipers work normally by
moving the switch to HI or MIST position.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Go to Step 8.

System switch

Check condition

Ignition switch (ACC)

When turned from the
LOCK (OFF) position to
the ACC position.

Windshield mist wiper
switch

When the switch is
turned from off to on.

Windshield intermittent
wiper switch

When the switch is
turned from off to on.

Windshield low-speed
wiper switch

When the switch is
turned from off to on.

Windshield high-speed
wiper switch

When the switch is
turned from off to on.

AC310401

Connector: A-01 <LHD>

Harness side

AD

A-01 (GR)

AC310396

Connector: A-01 <RHD>

Harness side

AD

A-01 (GR)