Mitsubishi Outlander (2003+). Manual - part 521

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-373

Step 4. Check the wiring harness between C-03 
fog lamp switch connector terminal No.2 and 
body earth.

•

Check the earth wires 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.00-6

).

NO : 

Repair the wiring harness.

Step 5. Connector check: C-220 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

AC308716

AE

1

5

6

4 3 2

Connector: C-03
<LHD>

Harness side

AC308769

AE

1

5

6

4 3 2

Connector: C-03 <RHD>

Harness side

AC308722

Connector: C-220

Junction block (Rear view)

AF

Harness side

28

37

43

29

44

38

23

32

41

24

25

26

27

34

42

3635

33

21

22

30

39

40

31

<LHD>

AC308776

Connector: C-220

Junction block (Rear view)

AD

Harness side

28

37

43

29

44

38

23

32

41

24

25

26

27

34

42

3635

33

21

22

30

39

40

31

<RHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-374

Step 6. Check the wiring harness between C-220 
ETACS-ECU connector terminal No.21 and C-03 
fog lamp switch connector terminal No.1.

•

Check the input line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

Step 7. Retest the system.

Check that the rear fog lamp switch signal is 
received 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.00-6

).

NO : 

Replace the ETACS-ECU.

AC308716

AE

1

5

6

4 3 2

Connector: C-03
<LHD>

Harness side

AC308769

AE

1

5

6

4 3 2

Connector: C-03 <RHD>

Harness side

AC308722

Connector: C-220

Junction block (Rear view)

AF

Harness side

28

37

43

29

44

38

23

32

41

24

25

26

27

34

42

3635

33

21

22

30

39

40

31

<LHD>

AC308776

Connector: C-220

Junction block (Rear view)

AD

Harness side

28

37

43

29

44

38

23

32

41

24

25

26

27

34

42

3635

33

21

22

30

39

40

31

<RHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-375

INSPECTION PROCEDURE N-17: The interior lamp loaded signal is not detected.

CAUTION

Whenever the ECU is replaced, ensure that the 
input signal circuit is normal.

IGNITION 
SWITCH (IG1)

IGNITION 
SWITCH (ACC)

COMBINATION 
METER

· FRONT LAMP
· REAR LAMP

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   

KEEP RELAY

INTERIOR LAMP CUT 
BACK-UP CIRCUIT

LOAD 
DETERMINATION 
CIRCUIT

POWER 
SOURCE

ETACS-ECU

BATTERY

RELAY
BOX

RELAY
BOX

Interior Lamp Automatic Shut-off Function Circuit <LHD> 

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-376

COMMENTS ON TROUBLE SYMPTOM
The interior lamp automatic-shutdown function 
operates in accordance with the interior lamp loaded 
signal. If this signal is abnormal, the functions below 
will not work normally.

•

Ignition key cylinder illumination lamp

•

Room lamps

POSSIBLE CAUSES

•

Malfunction of the ETACS-ECU

•

Damaged wiring harness or connector(s)

IGNITION 
SWITCH (IG1)

IGNITION 
SWITCH (ACC)

COMBINATION 
METER

· FRONT LAMP
· REAR LAMP

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   

KEEP RELAY

INTERIOR LAMP CUT 
BACK-UP CIRCUIT

LOAD 
DETERMINATION 
CIRCUIT

POWER 
SOURCE

ETACS-ECU

BATTERY

RELAY
BOX

Interior Lamp Automatic Shut-off Function Circuit <RHD>