Mitsubishi Grandis. Manual — part 147

OPERATION AND FUNCTION QUICK-REFERENCE TABLE FOR INPUT SIGNAL INSPECTION

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-50

OPERATION AND FUNCTION QUICK-REFERENCE TABLE

FOR INPUT SIGNAL INSPECTION PROCEDURES

M1549020300302

If troubles have occurred in the functions which use
the SWS simultaneously, observe the table below to
check input signals.

(This table shows only the input signals which will
cause troubles in at least two functions
simultaneously).

The passenger’s door lock key switch signal is not detected. <LH drive
vehicles>

Q-16

P.54C-521

The passenger’s door lock key switch signal is not detected. <RH drive
vehicles>

P.54C-525

The tailgate key switch signal is not detected.

Q-17

P.54C-528

The tailgate lock release handle signal is not detected.

Q-18

P.54C-533

The driver's seat belt switch signal is not received <LH drive vehicles>

Q-19

P.54C-537

The driver's seat belt switch signal is not received <RH drive vehicles>

P.54C-540

The front passenger's seat belt switch signal is not received <LH drive
vehicles>

Q-20

P.54C-543

The front passenger's seat belt switch signal is not received <RH drive
vehicles>

P.54C-546

Signal is not received from the electric remote controlled mirror switch
(folding/unfolding switch).

Q-21

P.54C-549

The interior lamp "all on" or "all off" switch signal is not sent to the
ETACS-ECU.

Q-22

P.54C-553

Each switch signal of the keyless entry transmitter is not received.

Q-23

P.54C-562

The interior lamp loaded signal is not detected.

Q-24

P.54C-563

Vehicle speed signal is not received.

Q-25

P.54C-568

Symptom

Inspection
procedure
number

Reference
page

Function

Q-1

Q-2

Q-5

Q-6

Q-7

Q-11 Q-12 Q-14 Q-15 Q-23 Q-24

Q-25

Lamp reminder
function

−

×

×

×

−

−

−

−

−

−

−

−

Seat belt warning
buzzer function

×

−

−

−

−

−

−

−

−

−

−

×

Door-ajar warning
buzzer function

×

×

×

−

−

−

−

×

−

−

−

×

Turn-signal lamp
operation sound
function

−

×

−

−

−

−

×

−

−

−

−

−

Control of central
door locking

−

−

−

−

−

−

−

−

×

−

−

−

Power window
control

−

×

−

−

−

−

−

−

−

−

−

−

Keyless entry system −

−

×

−

−

×

×

×

−

×

−

−

OPERATION AND FUNCTION QUICK-REFERENCE TABLE FOR INPUT SIGNAL INSPECTION PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-51

Keyless entry hazard
warning lamp
answerback

−

−

−

−

−

×

×

−

−

×

−

−

Multi-mode keyless
entry system

−

−

−

−

−

−

−

−

−

×

−

−

Sunroof control

×

−

×

−

−

−

−

−

−

−

−

−

Control of windshield
wiper washer

×

−

−

−

×

−

−

−

−

−

−

×

Rear wiper washer
control

×

−

−

−

×

−

−

−

−

−

−

−

Headlamp washer
control

×

−

−

×

×

−

−

−

−

−

−

−

Electric retractable
remote controlled
door mirror

×

−

×

−

−

−

−

−

−

−

−

−

Ignition key cylinder
illumination lamp
function

−

×

×

−

−

×

−

−

−

−

−

−

Seat belt indicator
lamp

−

×

−

−

−

−

−

−

−

−

−

×

Headlamp control

−

×

−

×

−

−

−

−

−

−

−

−

Tail lamp control

−

×

−

×

−

−

−

−

−

−

−

−

Headlamp
automatic-shutdown
function

−

×

×

×

−

−

−

−

−

−

−

−

Front fog lamp
control

−

−

−

×

−

−

−

−

−

−

−

−

Rear fog lamp control −

×

−

×

−

−

−

−

−

−

−

−

Turn-signal lamp
control

−

×

−

×

−

−

×

−

−

−

−

−

Interior lamp control

−

×

×

−

−

×

×

×

×

−

×

−

Interior lamp
automatic-shutdown
function

×

×

×

−

−

−

−

×

−

−

×

−

Door-ajar warning
lamp

−

−

×

−

−

−

×

×

−

−

−

−

Function

Q-1

Q-2

Q-5

Q-6

Q-7

Q-11 Q-12 Q-14 Q-15 Q-23 Q-24

Q-25

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-52

SYMPTOM PROCEDURES

Inspection Procedure A-1: Communication with the SWS monitor is not possible.

CAUTION

Whenever the ECU is replaced, ensure that the
power supply circuit, the earthing circuit and the
communication circuit are normal.

MUT-III Communication and ETACS-ECS Earth Circuit <LHD>

ETACS-
ECU

J/B SIDE

DIAGNOSIS
CONNECTOR

FRONT SIDE

Wire colour code
B : Black LG : Light green G : Green L : Blue
W : White Y : Yellow SB : Sky blue BR : Brown
O : Orange GR : Gray R : Red P : Pink V : Violet

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-53

COMMENTS ON TROUBLE SYMPTOM

The SWS monitor may be connected improperly.

POSSIBLE CAUSES

• Malfunction of the SWS monitor body (I/F

cartridge)

• Malfunction of the SWS monitor harness

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check that the MUT-III communicates with
the other systems.

Check whether the MUT-III can communicate with
the other systems.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Diagnose the system, which cannot
communicate with the MUT-III.

Step 2. Check that the MUT-III can communicate
with the system.

When the ignition switch is turned ON, check if the
MUT-III can communicate with the system.

Q: Is the check result normal?

YES :

Refer to Inspection Procedure A-3

"Communication with the ETACS-ECU is
not possible

P.54C-63

."

NO :

Go to Step 3.

ETACS-
ECU

J/B SIDE

DIAGNOSIS
CONNECTOR

FRONT SIDE

Wire colour code
B : Black LG : Light green G : Green L : Blue
W : White Y : Yellow SB : Sky blue BR : Brown
O : Orange GR : Gray R : Red P : Pink V : Violet

MUT-III Communication and ETACS-ECS Earth Circuit <RHD>