Mitsubishi Montero (2002-2004). Manual — part 236

CHECK AT ECU TERMINAL

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54Ba-21

2. COLUMN SWITCH

50

Input of driver's and front
passenger's door lock key
cylinder switch (LOCK) signals

Driver's or front passenger's door
lock key cylinder switch: LOCK

0 V

51

Input of front passenger's door
lock key cylinder switch
(UNLOCK) signal

Front passenger's door lock key
cylinder switch: UNLOCK

0 V

52

Input of driver's door lock key
cylinder switch (UNLOCK) signal

Driver's door lock key cylinder
switch: UNLOCK

0 V

53

Input of door lock switch signal
(LOCK)

Door lock switch: LOCK

0 V

54

Input of door lock switch signal
(UNLOCK)

Door lock switch: UNLOCK

0 V

55

Input of driver's door lock
actuator switch (LOCK) signal

Driver's door lock actuator
switch: LOCK

0 V

56

Input of driver's door lock
actuator switch (UNLOCK) signal

Driver's door lock actuator
switch: UNLOCK

0 V

TERMINAL
NO.

INSPECTION ITEM

INSPECTION CONDITION

NORMAL VALUE

5

4

3

2

1

10

9

8

7

6

ACX01512

TERMINAL
NO.

INSPECTION ITEM

INSPECTION CONDITION

NORMAL VALUE

1

Battery power supply

Always

Battery positive voltage

2

Input of data request signal

Always

0

− 5 V (pulse signal)

3

SWS communication line

Always

0

− 12 V (pulse signal)

4

Ground

Always

0 V

6

Output of signal from windshield
intermittent wiper interval
adjusting knob

Igniting switch: "ACC,"
Windshield intermittent wipe
interval adjusting knob: "FAST"
to "SLOW"

0

→ 2.5 V

8

Output of backup signal from
windshield wiper switch

Windshield low-speed wiper
switch or windshield high-speed
wiper switch: ON

0 V (when the
windshield wiper motor
is on)
12 V (when the
windshield wiper motor
is off)

9

Power supply to ignition switch
(IG1)

Ignition switch: "ON"

Battery positive voltage

10

Output of backup signal from
headlight switch

Ignition switch: "ON,"
Headlight switch: ON

0

− 1 V

CHECK AT ECU TERMINAL

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54Ba-22

3. FRONT-ECU

NOTE: Terminal voltages can not be measured as
the front-ECU is installed directly on the relay box.
Therefore, this information is only for reference.

1 2 3 4 5

7

9 10

6

8

11

21 22 23 24 25

27

26

28 29 30 31

ACX01513

TERMINAL
NO.

INSPECTION ITEM

INSPECTION CONDITION

NORMAL VALUE

1

Output to the fog light relay

When the fog lights are on

2 V or less

2

Output to headlight (high-beam) When headlights (high-beam)

are on

Battery positive voltage

3, 4

Battery power supply (for
headlight)

Always

Battery positive voltage

5

Battery power supply (for
taillight)

Always

Battery positive voltage

6

Output to headlight (low-beam)

When headlights (low-beam) are
on

Battery positive voltage

7

Battery power supply (for ECU)

Always

Battery positive voltage

8

Output to taillights

When taillights are on

Battery positive voltage

9

Battery power supply (for
headlight washer)

Always

Battery positive voltage

11

Output to the headlight washer

When the headlight washer is
working

Battery positive voltage

21

Output to windshield washer

When windshield washer is on

Battery positive voltage

22

SWS communication line

Always

0

− 12 V (pulse signal)

23

Input of automatic stop signal to
windshield wiper

When windshield wiper is on

Battery positive voltage

24

Power supply to ignition switch
(ACC)

Ignition switch: ACC

Battery positive voltage

25

Input of backup signal from
headlight switch

Headlight switch: ON

0 V

26

Input of backup signal to
windshield wiper

Windshield low-speed wiper
switch or windshield high-speed
wipe switch: ON

0 V

27

Output to windshield wiper (low-
speed)

When windshield wiper is on (at
low speed)

Battery positive voltage

28

Output to windshield wiper (high-
speed)

When windshield wiper is on (at
high speed)

Battery positive voltage

30

Power supply to ignition switch
(IG2)

Ignition switch: ON

Battery positive voltage

31

Ground

Always

0 V

CHECK AT ECU TERMINAL

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54Ba-23

4. SUNROOF MOTOR ASSEMBLY

5. RV METER

Refer to GROUP 54A, RV Meter

P.54A-230

.

5

4

3

2

1

10

9

8

7

6

ACX01514

TERMINAL
NO.

INSPECTION ITEM

INSPECTION CONDITION

NORMAL VALUE

1

Battery power supply (for motor) Always

Battery positive voltage

2

Power supply to ignition switch
(IG2)

Ignition switch: ON

Battery positive voltage

3

Battery power supply (for ECU)

Always

Battery positive voltage

5

Ground

Always

0 V

6

Input signal ("CLOSE/DOWN")
from the sunroof switch

Sunroof switch: "CLOSE/DOWN" 0 V

7

Input signal ("UP") from the
sunroof switch

Sunroof switch: "UP"

0 V

8

Input signal ("OPEN") from the
sunroof switch

Sunroof switch: "OPEN"

0 V

10

SWS communication line

Always

0

− 12 V (pulse signal)

SPECIAL TOOL

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54Ba-24

SPECIAL TOOL

M1549000300388

TOOL

TOOL NUMBER
AND NAME

SUPERSESSION

APPLICATION

MB991502
Scan tool (MUT-II)

MB991496-OD

Checking the diagnostic trouble
code and input signal

MB991862
A: MB991806
B: MB991812
C: MB991822

SWS monitor kit
A: SWS monitor
cartridge
B: SWS monitor
harness (for column-
ECU)
C: Probe harness

SWS communication line check
(ECU check and service data)

B991502

B991862

A

B

C