Mitsubishi 380. Manual — part 6

SWS DIAGNOSIS

SIMPLIFIED WIRING SYSTEM (SWS)

54B-21

LAMPING

ITEM

ITEM NO. INPUT SIGNAL

DISPLAY ON
DIAGNOSTIC TOOL

NORMAL CONDITION

H/L AUTO-CUT 00

Headlight switch

HEADLAMP SW (COLUMN
ECU)

Either is ON

01

Taillight switch

TAILLAMP SW (COLUMN
ECU)

30

Ignition switch
(IG1)

IG SW (IG1) (ETACS ECU)

OFF

32

Front door switch

FRONT DOOR SW (ETACS
ECU)

ON

35

Headlight
automatic shutoff
function

H/L AUTO-CUT (ETACS
ECU)

ON

70

Response by the
front-ECU

FRONT ECU ACK (FRONT
ECU)

NORMAL ACK or SLEEP
ACK

OFF

00

Headlight switch

HEADLAMP SW (COLUMN
ECU)

OFF

01

Tail lamp switch

TAILLAMP SW (COLUMN
ECU)

OFF

03

Passing lamp
switch

PASSING SW (COLUMN
ECU)

OFF

30

Ignition switch
(IG1)

IG SW (IG1) (ETACS ECU)

ON or OFF

35

Headlight
automatic shutoff
function

H/L AUTO-CUT (ETACS
ECU)

OFF

70

Response by the
front-ECU

FRONT ECU ACK (FRONT
ECU)

NORMAL ACK or SLEEP
ACK

HEADLAMP HI 00

Headlight switch

HEADLAMP SW (COLUMN
ECU)

ON

02

Dimmer switch

DIMMER SW (COLUMN
ECU)

ON or OFF

03

Passing lamp
switch

PASSING SW (COLUMN
ECU)

OFF

30

Ignition switch
(IG1)

IG SW (IG1) (COLUMN
ECU)

ON

35

Headlight
automatic shutoff
function

H/L AUTO-CUT (COLUMN
ECU)

OFF

70

Response by the
front-ECU

FRONT ECU ACK
(COLUMN ECU)

HI-BEAM ACK

SWS DIAGNOSIS

SIMPLIFIED WIRING SYSTEM (SWS)

54B-22

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 headlamp
automatic shutoff function. However, since the
headlamp operation does not depend on the ignition
switch positions, the diagnostic tool MB991958
(MUT-III Sub Assembly) does not display the title

"IGNITION SWITCH".

HEADLAMP
LO

00

Headlight switch

HEADLAMP SW (COLUMN
ECU)

ON

03

Passing lamp
switch

PASSING SW (COLUMN
ECU)

OFF

30

Ignition switch
(IG1)

IG SW (IG1) (ETACS ECU)

ON or OFF

35

Headlight
automatic shutoff
function

H/L AUTO-CUT (ETACS
ECU)

OFF

70

Response by the
front-ECU

FRONT ECU ACK (FRONT
ECU)

NORMAL ACK

PASSING
LAMP

03

Passing lamp
switch

PASSING SW (COLUMN
ECU)

ON

70

Response by the
front-ECU

FRONT ECU ACK (FRONT
ECU)

NORMAL ACK or HI-BEAM
ACK

F.FOG LAMP

00

Headlight switch

HEADLAMP SW (COLUMN
ECU)

ON

36

Front fog lamp
switch

F.FOG LAMP (COLUMN
ECU)

ON

35

Headlight
automatic shutoff
function

H/L AUTO-CUT (ETACS
ECU)

OFF

30

Ignition switch
(IG1)

IG SW (IG1) (ETACS ECU)

ON or OFF

70

Response by the
front-ECU

FRONT ECU ACK (FRONT
ECU)

NORMAL ACK or HI-BEAM
ACK

TAIL LAMP

00

Headlight switch

HEADLAMP SW (COLUMN
ECU)

OFF

01

Tail lamp switch

TAILLAMP SW (COLUMN
ECU)

ON

03

Passing lamp
switch

PASSING SW (COLUMN
ECU)

OFF

30

Ignition switch
(IG1)

IG SW (IG1) (ETACS ECU)

ON or OFF

35

Headlight
automatic shutoff
function

H/L AUTO-CUT (ETACS
ECU)

OFF

70

Response by the
front-ECU

FRONT ECU ACK (FRONT
ECU)

NORMAL ACK

ITEM

ITEM NO. INPUT SIGNAL

DISPLAY ON
DIAGNOSTIC TOOL

NORMAL CONDITION

SWS DIAGNOSIS

SIMPLIFIED WIRING SYSTEM (SWS)

54B-23

For checking item "HEADLAMP HI", the diagnostic
tool MB991958 (MUT-III Sub Assembly) displays
"OFF" on the item No.2 "DIMMER SW" when the
headlamps are at high-beam. Therefore, the
diagnostic tool MB991958 (MUT-III Sub Assembly)
should display "ON" momentarily when the dimmer
switch is operated.

.

TURN SIGNAL

.

BUZZER

NOTE: The headlamp automatic shutoff function
operates approximately one second after the lighting
monitor tone alarm starts sounding, and then the
tone alarm ceases sounding.

.

ITEM

ITEM NO. INPUT SIGNAL

DISPLAY ON
DIAGNOSTIC TOOL

NORMAL CONDITION

TURN-SIG.LH

10

Turn-signal lamp
switch (RH)

T/S RH SW (COLUMN
ECU)

OFF

11

Turn-signal lamp
switch (LH)

T/S LH SW (COLUMN
ECU)

ON

30

Ignition switch
(IG1)

IG SW (IG1) (ETACS ECU)

ON

TURN-SIG.RH

10

Turn-signal lamp
switch (RH)

T/S RH SW (COLUMN
ECU)

ON

11

Turn-signal lamp
switch (LH)

T/S LH SW (COLUMN
ECU)

OFF

30

Ignition switch
(IG1)

IG SW (IG1) (ETACS ECU)

ON

ITEM

ITEM NO. INPUT SIGNAL

DISPLAY ON DIAGNOSTIC
TOOL

NORMAL CONDITION

LGT
MONI.ALRM

00

Headlamp switch

HEADLAMP SW (COLUMN
ECU)

Either is ON

01

Tail lamp switch

TAILLAMP SW (COLUMN
ECU)

30

Ignition switch
(IG1)

IG SW (IG1) (ETACS ECU)

OFF

32

Front door switch

FRONT DOOR SW (ETACS
ECU)

ON

35

Headlamp
automatic shutoff
function

H/L AUTO-CUT (ETACS
ECU)

OFF

43

Tone alarm

BUZZER (ETACS ECU)

ON

OTHER
ALARM

30

Ignition switch
(IG1)

IG SW (IG1) (ETACS ECU)

ON

43

Tone alarm

BUZZER (ETACS ECU)

ON

SWS DIAGNOSIS

SIMPLIFIED WIRING SYSTEM (SWS)

54B-24

SUNROOF

PULSE CHECK

M1549015100562

1. The input signals (signals other than SWS

communication line signals), which are
compatible with the SWS monitor by using the
diagnostic tool MB991958 (MUT-III Sub
Assembly) or voltmeter, can be confirmed by the
Pulse Check.

2. Use the diagnostic tool MB991958 (MUT-III Sub

Assembly) or voltmeter to check the following
input signals.

NOTE: If a problem is found in the Pulse Check,
refer to Input Signal Chart

P.54B-61

.

Switches and their conditions, which are applicable
for Pulse Check

ITEM

ITEM NO. INPUT SIGNAL

DISPLAY ON
DIAGNOSTIC TOOL

NORMAL CONDITION

SUNROOF
OPE.

30

Ignition switch
(IG1)

IG SW (IG1) (ETACS ECU)

ON

72

Response by the
sunroof-ECU

S/R ECU ACK (SUNROOF
ECU)

INPUT CHECK (only
momentarily when switch is
operated)

INPUT SIGNAL

REQUIREMENTS FOR SOUNDING TONE
ALARM

Key reminder switch

When the ignition key is pulled out

Hazard warning lamp switch

When the switch is turned from off to on

Door switches

A door is opened when all the doors are
closed

Door lock key cylinder switch

When a door is locked or unlocked by a key
cylinder

Door lock actuators

Move the door lock knob from lock position
to unlock position or vice versa

Door lock switch (incorporated in the power window main
switch and front power window sub switch)

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

Keyless entry transmitter

When the switch is turned from off to on

Interior lamp loaded signal

Illuminates the interior lamps