Mitsubishi Grandis. Manual - part 21

 

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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>

 

 

 

 

 

 

 

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