Mitsubishi Grandis. Manual — part 138

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-14

ECU CHECK

M1549014900446

1. Use the MUT-III and the SWS monitor to check

ECUs.

2. The following ECUs can be checked by using the

MUT-III and the SWS monitor.

NOTE: If a malfunction is found by the "ECU check",
proceed "Symptom Procedure" (Refer to

P.54C-44

).

SWS monitor-compatible ECUs and their conditions

AC310632BA

Connectors: C-14, C-16

C-16

C-14

C-14

C-16

<RHD>

AC310628AC

Connector: C-27 <RHD>

AC310205

AB

Connector: D-03 <RHD>

D-03(B)

AC310207

AB

Connector: D-16

AC310209

Connector: F-02

F-02(B)

AB

Harness side

AC310213

Connector: F-05

Harness side

<RHD>

10

1

6

14

5

12

13

4

11

7

2

3

8

9

F-05(B)

AB

AC310216

Connector: F-18

F-18(B)

AB

Harness side

AC310211

AB

Connector: F-26

Harness side

<RHD>

F-26(B)

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-15

NOTE:

.

•

*1

: If "NG" is displayed beside the ETACS-ECU while the ignition switch is off, "NG" is also displayed

beside the column-ECU.

•

*2

: If the MUT-III shows "NG" beside the ETACS-ECU, it also shows "NG" beside the power window main

switch (power window module).

DATA LIST CHECK

M1549015000479

1. Use the MUT-III and the SWS monitor to check

"DATA LIST." This "DATA LIST" check is
applicable for signals, which are transmitted and
received through the SWS communication line
and the communication lines routed from one
door to another. For the input signals which are
not applicable for the SWS monitor check, refer
to pulse check procedure

P.54C-48

.

NOTE: If a problem is found in the "DATA LIST"

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

P.54C-48

).

2. The following input signals can be checked by

using the MUT-III and the SWS monitor.

Item No.

ECUs to be checked Display on

MUT-III

Normal
condition

ECU conditions

Item 80

Column switch
(column-ECU)

COLUMN ECU

OK

*1

All of the column switch,
power supply, earth and
interconnecting
communication line are
normal

Item 81

Multi-centre display

CENTRE DISP

NG

The MUT-III always displays
"NG" due to CAN
communication.

Item 83

ETACS-ECU

ETACS ECU

OK

All of the ETACS-ECU switch,
power supply, earth and
interconnecting
communication line are
normal

Item 84

Front-ECU

FRONT ECU

OK

*2

All of the front-ECU, power
supply, earth and
interconnecting
communication line are
normal

Item 85

Power window main
switch (power window
module)

P/W MODULE

OK

*2

(when the

ignition switch
is ON)

All of the power window main
switch, power supply, earth
and interconnecting
communication line are
normal

Item 86

Sunroof motor
assembly
(sunroof-ECU)

SUNROOF ECU

OK

*2

All of the sunroof motor
assembly, power supply, earth
and interconnecting
communication line are
normal

−

Other SWS-related
ECUs

Other ECUs

NG

ECUs are not used

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-16

DATA LIST REFERENCE TABLE
COLUMN SWITCH (COLUMN-ECU)

Item No. Check item

Display on
MUT-III

Check condition

Normal condition

00

Headlamp
switch

HEADLAMP
SW

lighting switch: HEAD

ON

lighting switch: Other than HEAD

OFF

01

Tail lamp
switch

TAIL LAMP SW Lighting switch: TAIL

ON

Lighting itch: OFF

OFF

02

Dimmer
switch

DIMMER SW

Dimmer switch: ON

ON

Dimmer switch: OFF

OFF

03

Passing lamp
switch

PASSING SW

Passing lamp which: ON

ON

Passing lamp which: OFF

OFF

05

Windshield
intermittent
wiper switch

INT WIPER SW Wiper switch: INT

ON

Wiper switch: Other than INT

OFF

06

Windshield
low-speed
wiper switch

LO WIPER SW Wiper switch: LO

ON

Wiper switch: Other than LO

OFF

07

Windshield
high-speed
wiper switch

HI WIPER SW

Wiper switch: HI

ON

Wiper switch: Other than HI

OFF

08

Wind shield
mist wiper
switch

MIST WIPER
SW

Wiper switch: Mist

ON

Wiper switch: Other than mist

OFF

09

Windshield
washer
switch

FRONT WASH.
SW

Windshield washer switch: ON

ON

Windshield washer switch: OFF

OFF

10

Turn-signal
lamp switch
(RH)

TURN SIG. RH Turn-signal lamp switch: RH

ON

Turn-signal lamp switch: Other than RH

OFF

11

Turn-signal
lamp switch
(LH)

TURN SIG. LH Turn-signal lamp switch: LH

ON

Turn-signal lamp switch: Other than LH

OFF

13

Rear wiper
switch

REAR WIPER
SW

Rear wiper switch: INT

ON

Rear wiper switch: Other than INT

OFF

14

Rear washer
switch

REAR WASH.
SW

Rear wiper switch: Washer

ON

Rear wiper switch: Other than washer

OFF

15

With or
without
windshield
intermittent
wiper control

INT WIP KNOB Vehicles with intermittent wiper control

EQUIP

Vehicles without intermittent wiper control

NONE

16

Headlamp
washer
switch

HD WASHER
SW

Headlamp washer switch: ON

ON

Headlamp washer switch: OFF

OFF

TROUBLESHOOTING

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-17

ETACS-ECU

Item No. Check item

Display on
MUT-III

Check condition

Normal condition

30

Ignition
switch (IG1)

IG SW(IG1)

Ignition switch: ON or START

ON

Ignition switch: LOCK (OFF) or ACC

OFF

31

Ignition
switch (ACC)

IG SW(ACC)

Ignition switch: ACC or ON

ON

Ignition switch: LOCK (OFF) or START

OFF

32

Driver's door
switch

DR DOOR SW Driver's door switch ON (The driver’s door

is open).

ON

Driver's door switch OFF (The driver's door
is closed).

OFF

33

Reception of
power
window
switch

P/W SW
ACCEPT

Ignition switch: ON or START

PERMIT

Ignition switch: from ON or START to LOCK
(OFF) or ACC

from PERMIT to
PROHIBIT (after
approximately 30
seconds)

34

Multimode
keyless entry
system

KEYLESS
ENTRY

1. Keyless entry transmitter LOCK switch:

ON

2. Turn ON the keyless entry transmitter

LOCK switch again (For the second
switch operation, hold pressing the
switch for at least one second within 30
seconds after the switch is turned on at
first)

Multi-close (only
momentarily when
switch is operated)

Other than the conditions above

WAITING

35

Headlamp
automatic-sh
utdown
function

HD AUTO-CUT 1. Lighting switch: Other than OFF

2. Ignition switch: from ON or START to

LOCK (OFF) or ACC

3. Driver's door switch: ON (driver's door

open)

OFF to ON (after
approximately one
second)

When requirements for the headlamp
automatic-shutdown are not satisfied

OFF

36

Request of
fog lamp
illumination

F.FOG LAMP

1. Lighting switch: "TAIL" or "HEAD"
2. Fog lamp switch: ON

ON

Other than the conditions above

OFF

37

Windshield
intermittent
wiper interval

INT WIPE
TIME

1. Ignition switch: ACC or ON
2. Operate the intermittent wiper control,

and change the wiper interval

The MUT-III
displays
intermittent wiper
interval in
response to the
intermittent wiper
control positions

41

Back-up
lamp switch

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

switch <A/T>: ON

ON

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

OFF