Mitsubishi Grandis. Manual - part 140

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-22

F.WIPER HI 
(high speed)

Windshield 
intermittent wiper 
switch

05

INT WIPER SW

OFF

Windshield 
low-speed wiper 
switch

06

LO WIPER SW

OFF

Windshield 
high-speed wiper 
switch

07

HI WIPER SW

ON

Wind shield mist 
wiper switch

08

MIST WIPER SW

OFF

Windshield washer 
switch

09

FRONT WASH. SW

OFF

Ignition switch 
(ACC)

31

IG SW(ACC)

ON

Response by the 
front-ECU

70

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

F.WIPER MIST Windshield 

intermittent wiper 
switch

05

INT WIPER SW

OFF

Windshield 
low-speed wiper 
switch

06

LO WIPER SW

OFF

Windshield 
high-speed wiper 
switch

07

HI WIPER SW

OFF

Wind shield mist 
wiper switch

08

MIST WIPER SW

ON

Windshield washer 
switch

09

FRONT WASH. SW

OFF

Ignition switch 
(ACC)

31

IG SW(ACC)

ON

Response by the 
front-ECU

70

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

F.WIPER 
WASH

Wind shield mist 
wiper switch

08

MIST WIPER SW

OFF

Windshield washer 
switch

09

FRONT WASH. SW

ON

Ignition switch 
(ACC)

31

IG SW(ACC)

ON

Response by the 
front-ECU

70

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

Item

Input signal

Item No. Display on MUT-III

Normal condition

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-23

REAR WIPER

LIGHTING

HD WASHER

Headlamp washer 
switch

16

HD WASHER SW

ON

Ignition switch 
(ACC)

31

IG SW(ACC)

ON

Response by the 
front-ECU

70

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

Item

Input signal

Item No. Display on MUT-III

Normal condition

Item

Input signal

Item No. Display on MUT-III

Normal condition

REAR WIPER

Rear wiper switch

13

REAR WIPER SW

ON

Rear washer switch 14

REAR WASH. SW

OFF

Ignition switch 
(ACC)

31

IG SW(ACC)

ON

REV. 
INTERLOCK

Rear wiper switch

13

REAR WIPER SW

ON

Ignition switch 
(ACC)

31

IG SW(ACC)

ON

Back-up lamp 
switch <M/T> or 
inhibitor switch 
<A/T>

41

INHIBITOR SW

ON

REAR 
WASHER

Rear washer switch 14

REAR WASH. SW

ON

Ignition switch 
(ACC)

31

IG SW(ACC)

ON

Item

Input signal

Item No. Display on MUT-III

Normal condition

OFF

Headlamp switch

00

HEADLAMP SW

OFF

Tail lamp switch

01

TAIL LAMP SW

OFF

Passing lamp 
switch

03

PASSING SW

OFF

Ignition switch 
(IG1)

30

IG SW(IG1)

ON

Headlamp 
automatic-shutdow
n function

35

HD AUTO-CUT

OFF

Response by the 
front-ECU

70

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-24

TAIL LAMP

Headlamp switch

00

HEADLAMP SW

OFF

Tail lamp switch

01

TAIL LAMP SW

ON

Passing lamp 
switch

03

PASSING SW

OFF

Ignition switch 
(IG1)

30

IG SW(IG1)

ON

Headlamp 
automatic-shutdow
n function

35

HD AUTO-CUT

OFF

Response by the 
front-ECU

70

FRONT ECU ACK

NORMAL ACK

HEADLAMP 
LO (low-beam)

Headlamp switch

00

HEADLAMP SW

ON

Passing lamp 
switch

03

PASSING SW

OFF

Ignition switch 
(IG1)

30

IG SW(IG1)

ON

Headlamp 
automatic-shutdow
n function

35

HD AUTO-CUT

OFF

Response by the 
front-ECU

70

FRONT ECU ACK

NORMAL ACK

HEADLAMP HI 
(high-beam)

Headlamp switch

00

HEADLAMP SW

ON

Dimmer switch

02

DIMMER SW

ON

Ignition switch 
(IG1)

30

IG SW(IG1)

ON

Headlamp 
automatic-shutdow
n function

35

HD AUTO-CUT

OFF

Response by the 
front-ECU

70

FRONT ECU ACK

HI-BEAM ACK

PASSING 
LAMP

Passing lamp 
switch

03

PASSING SW

ON

Response by the 
front-ECU

70

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

F.FOG LAMP

Headlamp switch

00

HEADLAMP SW

Either of items is ON

Tail lamp switch

01

TAIL LAMP SW

Ignition switch 
(IG1)

30

IG SW(IG1)

ON

Headlamp 
automatic-shutdow
n function

35

HD AUTO-CUT

OFF

Request of fog 
lamp illumination

36

F.FOG LAMP

ON

Response by the 
front-ECU

70

FRONT ECU ACK

NORMAL ACK

Item

Input signal

Item No. Display on MUT-III

Normal condition

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-25

NOTE: 

.

1. 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 headlamp automatic-shutdown function. However, the titles on the MUT-III 
screen will not be highlighted as this has nothing to do with actual lamp operation.

2. For checking item "HEADLAMP HI", the MUT-III displays "OFF" on the item No.2 "DIMMER SW" when the 

headlamps are at high-beam. Therefore, the MUT-III should display "ON" momentarily when the dimmer 
switch is operated.

TURN SIGNAL LAMP

REAR FOG 
LAMP

Headlamp switch

00

HEADLAMP SW

ON

Tail lamp switch

01

TAIL LAMP SW

ON

Headlamp 
automatic-shutdow
n function

35

HD AUTO-CUT

OFF

Response by the 
front-ECU

70

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

HD AUTO-CUT Headlamp switch

00

HEADLAMP SW

Either is on

Tail lamp switch

01

TAIL LAMP SW

Ignition switch 
(IG1)

30

IG SW(IG1)

OFF

Driver's door switch 32

DR DOOR SW

ON

Headlamp 
automatic-shutdow
n function

35

HD AUTO-CUT

ON

Response by the 
front-ECU

70

FRONT ECU ACK

NORMAL ACK or HI-BEAM 
ACK

Item

Input signal

Item No. Display on MUT-III

Normal condition

Item

Input signal

Item No. Display on MUT-III

Normal condition

Turn-signal 
lamp (RH)

Turn-signal lamp 
switch (RH)

10

TURN SIGNAL RH SW

ON

Turn-signal lamp 
switch (LH)

11

TURN SIGNAL LH SW

OFF

Ignition switch 
(IG1)

30

IGNITION SW IG1

ON

Turn-signal 
lamp (LH)

Turn-signal lamp 
switch (RH)

10

TURN SIGNAL RH SW

OFF

Turn-signal lamp 
switch (LH)

11

TURN SIGNAL LH SW

ON

Ignition switch 
(IG1)

30

IGNITION SW IG1

ON