Mitsubishi Grandis. Manual — part 21

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

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-81

OPERATION AND FUNCTION QUICK-REFERENCE TABLE

FOR INPUT SIGNAL INSPECTION PROCEDURES

M1549020300294

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.54B-484

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

P.54B-487

The tailgate key switch signal is not detected.

Q-17

P.54B-490

The tailgate lock release handle signal is not detected.

Q-18

P.54B-494

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

Q-19

P.54B-498

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

P.54B-501

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

Q-20

P.54B-504

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

P.54B-507

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

Q-21

P.54B-510

The interior lamp signal is not received.

Q-22

P.54B-514

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

Q-23

P.54B-523

The interior lamp loaded signal is not detected.

Q-24

P.54B-524

Vehicle speed signal is not received.

Q-25

P.54B-529

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

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-82

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) NOT USING SWS MONITOR

54B-83

SYMPTOM PROCEDURES

Inspection Procedure A-1: Communication with the MUT-III 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) NOT USING SWS MONITOR

54B-84

COMMENTS ON TROUBLE SYMPTOM

It is suspected that the power supply circuit to the
ETACS-ECU is defective, or the wiring harness
between the diagnosis connector and the
ETACS-ECU or their connector(s) is damaged.
NOTE: If the wiring harness between the
ETACS-ECU and body earth is defective, also check
C-219 ETACS-ECU connector terminal No.3, and
repair if necessary.

POSSIBLE CAUSES

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Check that the MUT-III communicates with
the other systems.
Use the MUT-III to confirm that it communicates with
the engine-ECU.

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-2 "Check

the ETACS-ECU battery power supply
circuit"

P.54B-87

.

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>