Mitsubishi Montero (2004+). Manual - part 694

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-33

NOTE: Also check junction block connector D-220 for loose, 
corroded, or damaged terminals, or terminals pushed back in 
the connector. If junction block connector D-220 is damaged, 
repair or replace the damaged component(s) as described in 
GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between ETACS-ECU connector 

D-224 (terminals 22 and 37) and data link connector 
D-118 (terminals 1 and 9) in good condition?
YES : Go to Step 8.
NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. The system 
should communicate with the SWS monitor kit 
normally.

STEP 8. Check data link connector D-117 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.

Q: Is data link connector D-117 in good condition?

YES : Go to Step 9.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. The system should communicate with the 

SWS monitor kit normally.

AC204173

CONNECTOR : D-220

AI

HARNESS SIDE

1

2

3

7

8

6

5

10

4

9

AC204170

CONNECTOR: D-117

HARNESS SIDE

AM

21

26

22

27 2829 30

23

31

24

32

25

33

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-34

STEP 9. Check the wiring harness between ETACS-ECU 
connector D-224 (terminal 21) and data link connector 
D-117 (terminal 31).

NOTE: Also check joint connector D-02 for loose, corroded, or 
damaged terminals, or terminals pushed back in the connector. 
If joint connector D-02 is damaged, repair or replace the dam-
aged component(s) as described in GROUP 00E, Harness 
Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between ETACS-ECU connector 

D-224 (terminal 21) and data link connector D-117 
(terminal 31) in good condition?
YES : Replace the ETACS-ECU. The system should 

communicate with the SWS monitor kit normally.

NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. The system 
should communicate with the SWS monitor kit 
normally.

AC204188

CONNECTORS : D-02, D-117

D-117

D-02

AD

D-02

D-117

HARNESS SIDE

9 10

8

6 7

31 32

30

29

18 19 20 21

5

4

2

1

3

27

26

24

23

25

12 13 14 15 16 17

28

11
22
33

21

26

22

27 2829 30

23

31

24

32

25

33

AC204174

CONNECTOR : D-224

AD

D-224(B)

D-224(B)

HARNESS SIDE

21

23

24

22

32

3433

31

26

27

28

3029

38

39

40

36

37

25

35

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-35

INSPECTION PROCEDURE A-2: Communication with the column switch (column-ECU) is not 
possible.

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

."

Column Switch Power Supply and SWS Communication Circuit

AC204170

CONNECTOR : D-28

BB

AC204172

CONNECTOR : D-203

AG

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-36

.

CIRCUIT OPERATION

• The power supply to the column switch is pro-

vided by the battery and the ignition switch (IG1).

• If the power supply system from the battery is 

defective, the system operates by the power sup-
ply from the ignition switch (IG1).

.

TECHNICAL DESCRIPTION (COMMENT)
The power supply circuit to the column switch (col-
umn-ECU) may be defective. If the battery power 
supply circuit (terminal 1 of the column switch) to the 
ECU is damaged, also check the power supply circuit 
from the ignition switch (IG1) (terminal 9 of the col-
umn switch), and repair if necessary.

.

TROUBLESHOOTING HINTS

• The ETACS-ECU may be defective

• The column switch may be defective

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

• MB991813: SWS Monitor Kit

• MB991806: SWS Monitor Cartridge

• MB991812: SWS Monitor Harness (For Column-ECU)

• MB991822: Probe Harness

AC204174

CONNECTOR : D-224

D-224(B)

AG