Mitsubishi Montero (2004+). Manual — part 691

SWS DIAGNOSIS

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-21

NOTE: The headlight automatic shutdown function
works in approximately one second after the lighting
monitor tone alarm starts sounding, and then the
tone alarm ceases sounding.

• SUNROOF

• THEFT-ALARM

PULSE CHECK

M1549015100216

1. The input signals (signals other than SWS

communication line signals), which are
compatible with the SWS monitor by using the
scan tool or voltmeter, can be confirmed by the
Pulse Check. (Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points

P.00-6

.)

2. Use the scan tool or voltmeter to check the

following input signals.
NOTE: If a problem is found the Pulse Check,
proceed to the Problems during Input Signal
Check <Scan tool or voltmeter> (Refer to

P.54B-500

).

Switches and their conditions, which are applicable

for Pulse Check

KEY
REMND.ALM

30

Ignition switch
(IG1)

IG SW (IG1)

OFF

32

Front door switch

FRONT DOOR SW

ON

43

Tone alarm

BUZZER

ON

LGT
MONI.ALM

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

OFF

43

Tone alarm

BUZZER

ON

OTHER
ALARM

30

Ignition switch
(IG1)

IG SW (IG1)

ON

43

Tone alarm

BUZZER

ON

ITEMS

ITEM
NO.

INPUT SIGNAL

DISPLAY ON SCAN TOOL NORMAL CONDITION

ITEM

ITEM
NO.

INPUT SIGNAL

DISPLAY ON SCAN TOOL NORMAL CONDITION

SUNROOF
OPE.

30

Ignition switch
(IG1)

IG SW (IG1)

ON

72

Response by the
sunroof-ECU

S/R ECU ACK

INPUT CHECK (only
momentarily when switch is
operated)

ITEM

ITEM
NO.

INPUT SIGNAL

DISPLAY ON SCAN TOOL NORMAL CONDITION

THEFT-ALARM 45

Theft-alarm
headlight

THEFTALM. H/L

ON

70

Response by the
front-ECU

FRONT ECU ACK

NORMAL ACK

SYMPTOM CHART

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-22

SYMPTOM CHART

M1549000800800

<ECU communication system>

<Function system>

INPUT SIGNAL

REQUIREMENT FOR SOUNDING
TONE ALARM

Key reminder switch

When the inserted ignition key is pulled
out

Hazard light switch

When the switch is turned from off to on

Seat belt which

When the seat belt is fastened

All door switches (excluding front door switch)

Either of the doors (excluding front door)
is opened

Driver's, front passenger's or back door lock key cylinder switch When the key cylinder is locked or

unlocked

Driver's, front passenger's, rear or back door lock actuator

When the driver's key cylinder or inside
lock knob is unlocked or locked

Door lock switch (incorporated in the power window main
switch)

When a door is locked or unlocked by a
door lock switch

Hood switch

When the hood is opened

Keyless entry system transmitter

Switches

When the switch is turned from off to on

SYMPTOM

INSPECTION
PROCEDURE

REFERENCE
PAGE

Communication with the SWS monitor kit is not possible.

A-1

P.54B-27

Communication with the column switch (column-ECU) is not possible.

A-2

P.54B-35

Communication with the ETACS-ECU is not possible.

A-3

P.54B-42

Communication with the front-ECU is not possible.

A-4

P.54B-48

Communication with the sunroof motor assembly (sunroof-ECU) is not
possible.

A-5

P.54B-56

Communication with the RV meter is not possible.

A-6

P.54B-69

SYSTEM

SYMPTOM

INSPECTION
PROCEDURE

REFERENCE
PAGE

Tone alarm

General description concerning the tone
alarm function

−

P.54B-73

Ignition key reminder tone alarm function
does not work normally.

B-1

P.54B-78

Light reminder tone alarm function does
not work normally.

B-2

P.54B-81

Seat belt tone alarm function does not
work normally.

B-3

P.54B-85

RV meter operating sound function does
not work normally.

B-4

P.54B-88

SYMPTOM CHART

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-23

Central door locking
system

General description concerning the central
door locking system

−

P.54B-91

Central door locking system does not work. C-1

P.54B-95

Some doors do not lock or unlock.

C-2

P.54B-105

All the doors do not lock or unlock with just
the door lock switch operation.

C-3

P.54B-133

All the doors do not lock or unlock by
rotating the door lock key cylinder.

C-4

P.54B-135

All the doors do not lock or unlock with just
the driver's inside lock knob operation.

C-5

P.54B-137

Forgotten key prevention function does not
work normally.

C-6

P.54B-139

Power windows

General description concerning the power
windows function

−

P.54B-143

Power windows do not work at all.

D-1

P.54B-147

The power window timer function does not
work normally.

D-2

P.54B-159

Only the front power window (LH) does
work normally by operating the power
window main switch.

D-3

P.54B-162

Power windows do not work normally by
operating the passenger's and rear power
window switches.

D-4

P.54B-165

Passenger's and rear power windows do
not work normally by operating the power
window main switch.

D-5

P.54B-199

Keyless entry system

General description concerning keyless
entry system

−

P.54B-201

Keyless entry system does not work.

E-1

P.54B-206

The turn-signal light and interior light
answerback function of the keyless entry
system does not work normally.

E-2

P.54B-208

Encrypted code cannot be registered.

E-3

P.54B-209

Sunroof

General description concerning the sunroof −

P.54B-211

Sunroof does not operate.

F-1

P.54B-213

Any of the sunroof switch positions is
defective.

F-2

P.54B-222

Sunroof timer function does not work
normally.

F-3

P.54B-224

Safety mechanism does not function.

F-4

P.54B-226

SYSTEM

SYMPTOM

INSPECTION
PROCEDURE

REFERENCE
PAGE

SYMPTOM CHART

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-24

Windshield wiper and
washer

General description concerning the
windshield wiper and washer function

−

P.54B-227

The windshield wipers do not work at all.

G-1

P.54B-231

The windshield wipers do not work when
the windshield wiper switch is at "INT" or
"MIST" position or the windshield washer
switch is at "ON" position. However, the
wipers work at low speed when the
windshield wiper switch is at "LO" or "HI."

G-2

P.54B-240

The windshield wipers do not work
normally.

G-3

P.54B-242

The windshield wipers do not stop at the
specified park position.

G-4

P.54B-248

The windshield intermittent wiper interval is
not changed by operating the windshield
intermittent wiper interval adjusting knob or
according to the vehicle speed.

G-5

P.54B-254

The windshield washer does not work.

G-6

P.54B-256

Rear wiper and washer

General description concerning the rear
wiper and washer function

−

P.54B-262

Rear wiper does not work at all.

H-1

P.54B-265

Rear wiper does not stop at the
predetermined park position.

H-2

P.54B-273

When the selector lever is moved to "R"
position during the rear wiper operation,
the rear wiper does not operate at the
continuous mode.

H-3

P.54B-275

Rear washer does not work.

H-4

P.54B-277

Seat belt warning light

General description concerning the seat
belt warning light function

−

P.54B-284

The seat belt warning light does not
illuminate.

I-1

P.54B-286

SYSTEM

SYMPTOM

INSPECTION
PROCEDURE

REFERENCE
PAGE