Mitsubishi Grandis. Manual - part 195

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-242

Step 7. Connector check: A-15X front-ECU 
connector.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the connector.

Step 8. Check the wiring harness between A-34 
rear washer motor connector terminal No.1 and 
A-15X front-ECU connector terminal No.21.

• Check the earth line for open or short circuit.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the wiring harness.

AC311521AC

Connector: A-15X

Relay box side

21

22

23

24

25

26

27

28

29

30

31

AC311521AC

Connector: A-15X

Relay box side

21

22

23

24

25

26

27

28

29

30

31

AC310401

Connector: A-34 <LHD>

Harness side

A-34 (GR)

AF

AC310396

Connector: A-34 <RHD>

Harness side

A-34 (GR)

AF

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-243

Step 9. Connector check: C-220 ETACS-ECU 
connector.

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair the connector.

AC310626

Connector: C-220 <LHD>

Junction block (Rear view)

AE

Harness side

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

AC310620

Connector: C-220 <RHD>

Junction block (Rear view)

AD

Harness side

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-244

Step 10. Check the wiring harness between C-220 
ETACS-ECU connector terminal No.23 and A-34 
washer motor connector terminal No.2.

NOTE: 

Prior to the wiring harness inspection, check 
intermediate connector C-125, and repair if 
necessary.

• Check the output signal line.

Q: Is the check result normal?

YES : 

Go to Step 11.

NO : 

Repair the wiring harness.

Step 11. Retest the system.

Check that the rear washer works normally.

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 ETACS-ECU.

AC310401

Connector: A-34 <LHD>

Harness side

A-34 (GR)

AF

AC310396

Connector: A-34 <RHD>

Harness side

A-34 (GR)

AF

AC310626

Connector: C-220 <LHD>

Junction block (Rear view)

AE

Harness side

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

AC310620

Connector: C-220 <RHD>

Junction block (Rear view)

AD

Harness side

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

AC310613

AD

Connector: C-125 <LHD>

AC310628AB

Connector: C-125 <RHD>

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-245

HEADLAMP WASHER

Inspection Procedure I-1: The headlamp washer does not work.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The headlamp washer motor, the column switch or 
the front-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the headlamp washer motor

• Malfunction of the column switch

• Malfunction of the front-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. ECU check by using the SWS monitor.

Check that the power supply and earth lines to the 
column switch (column-ECU) and the front-ECU and 
the SWS communication lines are normal.

• Turn the ignition switch to the ON position.

ECUS TO BE CHECKED

• COLUMN ECU

• FRONT ECU

OK: "OK" are displayed for all the items

Q: Are the check result normal?

FRONT-ECU

HEADLAMP
WASHER MOTOR

INPUT SIGNAL

HEADLAMP WASHER

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

FUSIBLE
LINK

5

HEADLAMP
WASHER

Headlamp Washer Motor Circuit