Mitsubishi Lancer Evolution IX. Manual - part 191

TROUBLE SYMPTOM CHART

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-23

Flasher timer

The turn-signal lamps do not illuminate.

I-1

P.54C-208

The hazard warning lamps do not illuminate.

I-2

P.54C-213

Any of the turn-signal lamps does not illuminate. 
<LH drive vehicles>

I-3

P.54C-215

Any of the turn-signal lamps does not illuminate. 
<RH drive vehicles>

P.54C-223

Fog lamp

The rear fog lamp do not illuminate normally.

J-1

P.54C-231

The rear fog lamp or the rear fog lamp indicator 
does not illuminate normally.

J-2

P.54C-237

Room lamp

The front or rear room lamp does not illuminate 
or extinguish normally.

K-1

P.54C-244

Interior lamp automatic shutdown function does 
not work normally. 

K-2

P.54C-252

The door-ajar warning lamp does not 
illuminate/extinguish normally.

K-3

P.54C-254

Symptom

Inspection 
procedure 
number

Reference 
page

CHECK TROUBLE BY USING THE INPUT SIGNAL CHECK

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-24

CHECK TROUBLE BY USING THE INPUT SIGNAL CHECK

M1549024200329

If a problem is found in the Service Data or Pulse 
Check inspection, observe the table below.

Symptom

Inspection 
procedure 
number

Reference 
page

The ignition switch (ACC) signal is not received.

L-1

P.54C-258

The ignition switch (IG1) signal is not received.

L-2

P.54C-261

The door switch (front: LH) signal is not received. <LH drive vehicles>

L-3

P.54C-263

The door switch (front: RH) signal is not received. <RH drive vehicles>

P.54C-265

Column switch (lighting and 
turn-signal lamp switch)

The tail lamp switch signal is not 
received.

L-4

P.54C-267

The headlamp switch signal is not 
received.
The dimmer switch signal is not 
received.
The passing switch signal is not 
received.
The turn-signal lamp switch (LH) 
signal is not received.
The turn-signal lamp switch (RH) 
signal is not received.
The headlamp washer switch signal 
is not received.

Column switch (windshield 
wiper/washer and rear wiper washer 
switch)

The windshield mist wiper switch 
signal is not received.

L-5

P.54C-268

The windshield intermittent wiper 
switch signal is not received.
The windshield low-speed wiper 
switch signal is not received.
The windshield high-speed wiper 
switch signal is not received.
The windshield washer switch signal 
is not received.
The windshield intermittent wiper 
volume signal is not received.

L-6

P.54C-270

Power window main switch

When the power window main switch 
is operated, the switch signals are 
not received.

L-7

P.54C-274

The rear fog lamp switch signal is not received.

L-8

P.54C-277

The key reminder switch signal is not received.

L-9

P.54C-281

The hazard warning lamp switch signal is not received.

L-10

P.54C-285

All the door switch signals are not 
received.

LH drive vehicles

L-11

P.54C-289

RH drive vehicles

P.54C-292

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

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-25

OPERATION AND FUNCTION QUICK-REFERENCE TABLE 

FOR INPUT SIGNAL INSPECTION PROCEDURES

M1549020300324

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 simultane-
ously).

The front door lock actuator (LH) switch signal is not received. <LH drive 
vehicles>

L-12

P.54C-296

The front door lock actuator (RH) switch signal is not received. <RH drive 
vehicles>

P.54C-299

The vehicle speed sensor signal is not received.

L-13

P.54C-302

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

L-14

P.54C-306

The interior lamp loaded signal is not detected.

L-15

P.54C-307

The door lock key cylinder switch signal is not detected.

L-16

P.54C-312

Symptom

Inspection 
procedure 
number

Reference 
page

Function

L-1

L-2

L-3

L-4

L-9

L-11

L-12

L-15

Lamp reminder function

−

×

×

×

−

−

−

−

Control of central door locking

−

−

−

−

−

−

×

−

Key reminder function

−

−

×

−

×

−

×

−

Door locking released due to impact 
detection.

−

−

−

−

−

−

−

−

Keyless entry system

−

−

×

−

×

×

×

−

Keyless entry hazard warning lamp 
answerback

−

−

−

−

−

−

−

−

Power window control

−

×

−

−

−

−

−

−

Control of windshield wiper washer

×

−

−

−

−

−

−

−

Ignition key cylinder illumination lamp 
function

−

×

×

−

×

−

−

×

Headlamp control

−

×

−

×

−

−

−

−

Tail lamp control

−

×

−

×

−

−

−

−

Headlamp automatic shutdown function

−

×

×

×

−

−

−

−

Fog lamp control

−

−

−

×

−

−

−

−

Turn-signal lamp control

−

×

−

×

−

−

−

−

Dome lamp control

−

×

×

−

×

×

×

×

Interior lamp automatic shutdown function

×

−

−

−

−

−

−

×

Door-ajar indicator lamp

−

−

×

−

−

×

−

−

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-26

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.

COMMENTS ON TROUBLE SYMPTOM

The SWS monitor may be connected improperly.

POSSIBLE CAUSES

• Malfunction of the SWS monitor body (I/F car-

tridge)

• Malfunction of the SWS monitor harness

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check that the M.U.T.-II/III communicates 
with the other systems.
Use the M.U.T.-II/III to confirm that it communicates 
with the engine-ECU.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Diagnose the engine control system. Refer 
to GROUP 13A 

− Troubleshooting 

P.13A-237

.

ETACS-
ECU

DIAGNOSIS
CONNECTOR

LHD

RHD

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

J/B SIDE

MUT-II/III Communication Circuit and ETACS-ECU Ground Circuit