Mitsubishi Outlander (2003+). Manual - part 435

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-29

Step 6. Measure the resistance at A-12X 
front-ECU connector.

(1) Remove the front-ECU, and measure at the relay 

box side.

(2) Resistance between A-12X front-ECU connector 

terminal No.21 and body earth

OK: 2 

Ω

 or less

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Go to Step 7.

Step 7. Check the wiring harness between A-12X 
front-ECU connector terminal No.21 and the 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 8. Connector check: C-219 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the defective connector.

AC301515 AE

Connector: A-12X

24

29

30

31

2827

25

26

21

2322

Relay box side

AC301541AG

Connector A-12X
(Relay box side)

24

29

30

31

2827

25

26

21

2322

AC301515 AE

Connector: A-12X

24

29

30

31

2827

25

26

21

2322

Relay box side

AC308722

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<LHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

AC308776

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<RHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-30

Step 9. Check the wiring harness between C-219 
ETACS-ECU connector terminal No.59 and A-12X 
front-ECU connector terminal No.30.

NOTE: 

Prior to the wiring harness inspection, check joint 
connector C-02 and intermediate connector C-116, 
and repair if necessary.

•

Check the communication lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair the wiring harness.

AC301515 AE

Connector: A-12X

24

29

30

31

2827

25

26

21

2322

Relay box side

AC308722

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<LHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

AC308776

Connector: C-219

Junction block (Rear view)

Junction block side

AB

<RHD>

68

74

63

66

72

73

67

6564

61

70

71

62

69

60

57

58

59

5655

52

54 53

51

C-219 (GR)

AC308717

Connectors: C-02, C-116

C-116

C-02

C-02

C-116

9

21

33

35

24

12

3 4

7

8

5 6

39

28

41

30

18

4243

31

1920

32

40

29

1617

38

27

15

37

36

26

14

13

25

2

1

34

23

11

10

22

AB

<LHD>

AC308769

AD

33

22

11

28

17

16

15

14

13

12

25

2324

2627

3

1 2

4 5

21

20

19

18

2930

32

31

7

6

8

10

9

Connector: C-02 <RHD>

AC308735

AE

Connector: C-116

9

21

33

35

24

12

3 4

7

8

5 6

39

28

41

30

18

4243

31

1920

32

40

29

1617

38

27

15

37

36

26

14

13

25

2

1

34

23

11

10

22

<RHD>

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-31

Step 10. Check whether the diagnosis code is 
reset.

Replace the column switch, and then check that the 
diagnosis code is not reset.
(1) Replace the column switch.
(2) Ignition switch: ON

(3) On completion, check that diagnosis code No.13 

is not reset.

Q: Is diagnosis code No.13 set?

YES : 

Replace the ETACS-ECU.

NO : 

The procedure is complete.

Diagnosis code 21: Short circuit in SWS communication line

CAUTION

Whenever the ECU is replaced, ensure that the 
communication circuit is normal.

ETACS-ECU

COLUMN
SWITCH

FRONT-ECU

POWER
WINDOW
MAIN SWITCH

CPU

COLUMN-ECU

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   

SWS Communication Line <LHD>

DIAGNOSTIC TROUBLE CODE PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-32

DIAGNOSIS CODE SET CONDITIONS
If the SWS communication line voltage is kept at low 
level for 0.3 second, the diagnosis code will be set. If 
the ETACS-ECU data line voltage is kept at high 
level for 0.3 second, or the ETACS-ECU has 
received normal signal from the other ECUs or 
switches, the ETACS-ECU will stop sending the 
diagnosis code. While this code is set, the other 
codes will not be set.

POSSIBLE CAUSES

•

Malfunction of the column switch

•

Malfunction of the front-ECU

•

Malfunction of the power window main switch

•

Malfunction of the ETACS-ECU

•

Damaged harness wires and connectors

ETACS-ECU

COLUMN
SWITCH

FRONT-ECU

COLUMN-
ECU

CPU

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   

POWER 
WINDOW
MAIN SWITCH

SWS Communication Line <RHD>