Mitsubishi Montero (2002-2004). Manual - part 234

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54Ba-13

<FUNCTION DIAGNOSIS>
The table below shows the service data and their 
normal condition, which are displayed during the 
"FUNCTION DIAG." The row "Normal condition" 
shows values, which are shown when each opera-
tion is made.

• WIPER

ITEM

ITEM 
NO.

INPUT SIGNAL

DISPLAY ON SCAN TOOL NORMAL CONDITION

F.WIPER HI

05

Windshield 
intermittent wiper 
switch

INT WIPER SW

OFF

06

Windshield low-
speed wiper switch

LO WIPER SW

OFF

07

Windshield high-
speed wiper switch

HI WIPER SW

ON

08

Windshield mist 
wiper switch

MIST WIPER SW

OFF

09

Windshield washer 
switch

FRONT WASH.SW

OFF

31

Ignition switch 
(ACC)

IG SW (ACC)

ON

70

Response by the 
front-ECU

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

F.WIPER INT

05

Windshield 
intermittent wiper 
switch

INT WIPER SW

ON

06

Windshield low-
speed wiper switch

LO WIPER SW

OFF

07

Windshield high-
speed wiper switch

HI WIPER SW

OFF

08

Wind shield mist 
wiper switch

MIST WIPER SW

OFF

09

Windshield washer 
switch

FRONT WASH.SW

OFF

31

Ignition switch 
(ACC)

IG SW (ACC)

ON

37

Windshield 
intermittent wiper 
interval

INT WIPE TIME

The scan tool displays 
intermittent wiper interval in 
response to the intermittent 
wiper adjusting knob 
positions

70

Response by the 
front-ECU

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54Ba-14

F.WIPER LO

05

Windshield 
intermittent wiper 
switch

INT WIPER SW

OFF

06

Windshield low-
speed wiper switch

LO WIPER SW

ON

07

Windshield high-
speed wiper switch

HI WIPER SW

OFF

08

Wind shield mist 
wiper switch

MIST WIPER SW

OFF

09

Windshield washer 
switch

FRONT WASH.SW

OFF

31

Ignition switch 
(ACC)

IG SW (ACC)

ON

70

Response by the 
front-ECU

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

F.WIPER MIST 05

Windshield 
intermittent wiper 
switch

INT WIPER SW

OFF

06

Windshield low-
speed wiper switch

LO WIPER SW

OFF

07

Windshield high-
speed wiper switch

HI WIPER SW

OFF

08

Wind shield mist 
wiper switch

MIST WIPER SW

ON

09

Windshield washer 
switch

FRONT WASH.SW

OFF

31

Ignition switch 
(ACC)

IG SW (ACC)

ON

70

Response by the 
front-ECU

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

F.WIPER 
WASH

08

Wind shield mist 
wiper switch

MIST WIPER SW

OFF

09

Windshield washer 
switch

FRONT WASH.SW

ON

31

Ignition switch 
(ACC)

IG SW (ACC)

ON

70

Response by the 
front-ECU

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

ITEM

ITEM 
NO.

INPUT SIGNAL

DISPLAY ON SCAN TOOL NORMAL CONDITION

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54Ba-15

• REAR WIPER

• LIGHTING

ITEM

ITEM 
NO.

INPUT SIGNAL

DISPLAY ON SCAN TOOL NORMAL CONDITION

REAR 
WASHER

14

Rear washer switch REAR WASH.SW

ON

31

Ignition switch 
(ACC)

IG SW (ACC)

ON

REAR WIPER

13

Rear wiper switch

REAR WIPER SW

ON

14

Rear washer switch REAR WASH.SW

OFF

31

Ignition switch 
(ACC)

IG SW (ACC)

ON

REV.INTERLO
CK

13

Rear wiper switch

REAR WIPER SW

ON

31

Ignition switch 
(ACC)

IG SW (ACC)

ON

41

Transmission 
range switch ("R" 
position)

PNP SW (R)

ON

ITEM

ITEM 
NO.

INPUT SIGNAL

DISPLAY ON SCAN TOOL NORMAL CONDITION

H/L AUTO-CUT 00

Headlight switch

HEADLIGHT SW

Either is on

01

Tail light switch

TAILLIGHT SW

30

Ignition switch 
(IG1)

IG SW (IG1)

OFF

32

Front door switch

FRONT DOOR SW

ON

35

Headlight 
automatic 
shutdown function

H/L AUTO-CUT

ON

70

Response by the 
front-ECU

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

OFF

00

Headlight switch

HEADLIGHT SW

OFF

01

Tail light switch

TAILLIGHT SW

OFF

03

Passing light switch PASSING SW

OFF

04

Automatic lighting 
switch

AUTOLAMP SW

OFF

30

Ignition switch 
(IG1)

IG SW (IG1)

ON

35

Headlight 
automatic 
shutdown function

H/L AUTO-CUT

OFF

70

Response by the 
front-ECU

FRONT ECU ACK

NORMAL ACK or SLEEP 
ACK

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54Ba-16

NOTE: When checking the input signals (off, tail, 
low-beam or high-beam), turn the ignition switch to 
the "ON" position in order to disable the headlight 
automatic shutdown function. However, the headlight 
operation does not depend on the ignition switch 
positions, the scan tool does not display the title 
"IGNITION SWITCH."

For checking item "HI (High-beam)," the scan tool 
displays "OFF" on the item No.2 "Dimmer SW" when 
the headlights are at high-beam. Therefore, the scan 
tool should display "ON" momentarily when the dim-
mer switch is operated.

HEADLIGHT HI 00

Headlight switch

HEADLIGHT SW

ON

02

Dimmer switch

DIMMER SW

ON

03

Passing light switch PASSING SW

ON

30

Ignition switch 
(IG1)

IG SW (IG1)

ON

35

Headlight 
automatic 
shutdown function

H/L AUTO-CUT

OFF

70

Response by the 
front-ECU

FRONT ECU ACK

HI-BEAM ACK

HEADLIGHT 
LO

00

Headlight switch

HEADLIGHT SW

ON

03

Passing light switch PASSING SW

OFF

30

Ignition switch 
(IG1)

IG SW (IG1)

ON

35

Headlight 
automatic 
shutdown function

H/L AUTO-CUT

OFF

70

Response by the 
front-ECU

FRONT ECU ACK

NORMAL ACK

PASSING 
LIGHT

03

Passing light switch PASSING SW

ON

70

Response by the 
front-ECU

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

TAILLIGHT

00

Headlight switch

HEADLIGHT SW

OFF

01

Tail light switch

TAILLIGHT SW

ON

03

Passing light switch PASSING SW

OFF

30

Ignition switch 
(IG1)

IG SW (IG1)

ON

35

Headlight 
automatic 
shutdown function

H/L AUTO-CUT

OFF

70

Response by the 
front-ECU

FRONT ECU ACK

NORMAL ACK

ITEM

ITEM 
NO.

INPUT SIGNAL

DISPLAY ON SCAN TOOL NORMAL CONDITION