Mitsubishi Grandis. Manual - part 141

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-26

BUZZER

NOTE: The headlamp automatic-shutdown function works in approximately one second after the lighting 
monitor buzzer starts sounding, and then the buzzer ceases sounding.

Power windows

Keyless entry system

Item

Input signal

Item No. Display on MUT-III

Normal condition

Lighting 
monitor buzzer

Headlamp switch

00

HEADLAMP SW

Either is on

Tail lamp switch

01

TAIL LAMP SW

Ignition switch 
(IG1)

30

IGNITION SW IG1

OFF

Driver's door switch 32

DRIVER DOOR SW

ON

Headlamp 
automatic-shutdow
n function

35

HD LAMP AUTOCUT

OFF

Buzzer

43

Buzzer

ON

Item

Input signal

Item No. Display on MUT-III

Normal condition

Power windows Ignition switch 

(IG1)

30

IG SW IG1

ON

Reception of power 
window switch

33

P/W SWACCEPT

PERMIT

Response by 
power window 
module

71

P/W ECU ACK

INPUT CHECK (only 
momentarily when switch is 
operated)

Item

Input signal

Item No. Display on MUT-III

Normal condition

Multi-close

Reception of power 
window switch

33

P/W SW ACCEPT

PERMIT

Multimode keyless 
entry system

34

KEYLESS ENTRY

Multi-close (only 
momentarily when switch is 
operated)

Response by 
power window 
module

71

P/W ECU ACK

NORMAL ACK or 
P/WLOCK ACK

Response by the 
sunroof-ECU

72

S/R ECU ACK

NORMAL ACK to INPUT 
CHECK (only when the 
switch is operated)

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-27

Sunroof

ETACS SWITCH DATA CHART

Item

Input signal

Item No. Display on MUT-III

Normal condition

SUNROOF 
OPE.

Ignition switch 
(IG1)

30

IG SW (IG1)

ON

Response by 
power window 
module

71

P/W ECU ACK

NORMAL ACK

Response by the 
sunroof-ECU

72

S/R ECU ACK

INPUT CHECK (only 
momentarily when switch is 
operated)

REAR S/R 
LOCK

Ignition switch 
(IG1)

30

IG SW (IG1)

ON

Buzzer

43

BUZZER

ON

Response by 
power window 
module

71

P/W ECU ACK

P/W LOCK ACK

Response by the 
sunroof-ECU

72

S/R ECU ACK

BUZZER ACK

Item No. Check items

Display on 
MUT-III

Check conditions

Normal 
condition
s

01

*

Specification 
switching terminal

SPEC.SW 1

OFF:Vehicles for Europe

OFF

02

*

Specification 
switching terminal

SPEC.SW 2

ON: Vehicles for Europe

ON

03

Key reminder 
switch

KEY REMIN SW Key reminder switch: ON (when the ignition 

key is pulled off)

ON

Key reminder switch: OFF (Insert the 
ignition key)

OFF

04

Hazard warning 
lamp switch

HAZARD LMP 
SW

Hazard warning lamp switch: ON (when the 
switch is operated)

ON

Hazard warning lamp switch: ON (when the 
switch is not operated)

OFF

05

Passenger's door 
switch

PASS DOOR SW Front passenger's door: open

ON

Front passenger's door: Closed

OFF

07

Tailgate switch

TRK LID LA SW

Tailgate: OPEN

ON

Tailgate: CLOSE

OFF

09

Rear wiper 
auto-stop switch

R.WIPER 
A/STOP

When rear wiper is operating

ON

When the rear wiper is not working

OFF

10

Front fog lamp 
switch

F.FOG LAMP SW Fog lamp switch: ON (when the switch is 

operated)

ON

Fog lamp switch: ON (when the switch is not 
operated)

OFF

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-28

11

Rear fog lamp 
switch

R.FOG LAMP 
SW

Fog lamp switch: ON (when the switch is 
operated)

ON

Fog lamp switch: ON (when the switch is not 
operated)

OFF

12

Driver’s seatbelt 
switch

SEAT BELT SW

Seat belt switch: ON (when the seat belt is 
unfastened)

ON

Seat belt switch: OFF (when the seat belt is 
fastened)

OFF

14

Electric 
remote-controlled 
door mirror 
(folding/unfolding ) 
switch

EL RET MIR SW Electric remote-controlled door mirror 

(folding/unfolding ) switch: ON (when the 
switch is operated)

ON

Electric remote-controlled door mirror 
(folding/unfolding ) switch: ON (when the 
switch is not operated)

OFF

18

Tailgate key unlock 
switch

TRK UNLOCK 
SW

Tailgate key unlock switch: ON (when the 
key is turned)

ON

Tailgate key unlock switch: OFF

OFF

19

Tailgate key lock 
switch

GATE LOCK SW Tailgate key lock switch: ON (when the key 

is turned)

ON

Tailgate key lock switch: OFF

OFF

21

Driver's door lock 
actuator lock 
switch

DR DOR LCK 
SW

Driver's door: Locked

ON

Driver's door: Other than "locked"

OFF

22

Driver's door lock 
actuator unlock 
switch

DR DOR ULK 
SW

Driver's door: Unlocked

ON

Driver's door: Other than "Unlocked"

OFF

26

Central door 
locking

CNTR DOOR 
LCK

When the central door locking operates

ON

When the central door locking does not 
operate

OFF

27

Central door 
unlock

CNTR DOOR 
ULCK

When the central door unlocking operates

ON

When the central door unlocking does not 
operate

OFF

30

Tailgate lock 
release handle 
switch

GTE OPENER 
SW

Tailgate lock release handle switch: When 
being operated

ON

Tailgate lock release handle switch: When 
not being operated

OFF

31

Room lamp "ON" 
switch

RM LMP ON SW Room lamp "ON" switch: ON

ON

Room lamp "ON" switch: OFF

OFF

32

Room lamp 
"ON/OFF" switch

RM LMP OFF 
SW

Room lamp "OFF" switch: ON

ON

Room lamp "OFF" switch: OFF

OFF

35

DRL changeover 
terminal

DRL

When DRL is equipped: ON

ON

When DRL is not equipped: OFF

OFF

Item No. Check items

Display on 
MUT-III

Check conditions

Normal 
condition
s

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-29

*

: Market can be changed by combination of item Nos. 01 and 02.

ETACS ANALOGUE DATA CHART

PULSE CHECK

M1549015100410

CAUTION

Before connecting or disconnecting the MUT-III, 
turn the ignition switch to the "LOCK" (OFF) 
position.

1. The input signals (signals other than 

communication line signals), which are 
compatible with the SWS monitor by using the 
MUT-III or voltmeter, can be confirmed by the 
Pulse Check.

NOTE: If a problem is found in the "Pulse Check", 

refer to the Problems during Input Signal Check 
<Service data, function diagnosis or pulse 
check> (Refer to 

P.54C-48

).

2. Use the MUT-III or voltmeter to check the 

following input signals.

36

Diagnosis 
connector

MUT DIAG CON. Diagnosis control line: Earthed

ON

Diagnosis control line: Not earthed

OFF

41

Rear door (RH) 
switch

R.DOOR(RH)SW Rear door (RH): open

ON

Rear door (RH): Closed

OFF

42

Rear door (LH) 
switch

R.DOOR(LH)SW Rear door (LH): open

ON

Rear door (LH): Closed

OFF

43

Front passenger's 
seat belt switch

As.SeatBeltSW

Front passenger's seat belt switch: ON 
(when the seat is occupied but the seat belt 
is unfastened)

ON

Front passenger's seat belt switch: OFF 
(when the seat belt is fastened)

OFF

Item No. Check items

Display on 
MUT-III

Check conditions

Normal 
condition
s

Item No. Check items

Display on MUT-III

How to check

02

Windshield 
intermittent wiper 
volume

WPR VOL VOLT

Displays the voltage in the windshield wiper 
intermittent volume.
Changes in accordance with the position of the 
windshield wiper intermittent volume.

03

Vehicle speed signal SPEED SENSER

Displays the vehicle speed
Changes in accordance with the vehicle speed.

04

Room lamp timer 
period

RM LMP TIMER

Displays room lamp timer period.

05

Headlamp automatic 
shutdown timer 
period

H/L A.CUT TMR

Displays headlamp automatic shutdown period 
(timing).

06

Power window 
key-off timer period

P/W KY OF TMR

Displays power window key-off timer period 
(timing).

08

Windshield 
intermittent wiper 
interval

WPR INT TIME

Displays windshield intermittent wiper interval (with 
chart)
Changes according to the windshield wiper 
intermittent volume position and the vehicle speed.