Mitsubishi Lancer Evolution IX. Manual - part 238

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-211

Step 4. Check the wiring harness between C-226 
ETACS-ECU connector terminal No.11 and the 
battery.

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connector C-129 and junction block connector 
C-210, and repair if necessary.

• Check the power supply line for open circuit.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

Cope with Intermittent Malfunction 

P.00-5

).

NO : 

Repair the wiring harness.

AC310450

Connector: C-226

AB

Junction block side

Junction block (rear view)

<LHD>

AC310461

Junction block (rear view)

Connector: C-226

AB

<RHD>

Junction block side

AC310446

Connector: C-129
<LHD>

AI

AC310454

Connector: C-129
<RHD>

AJ

AC310448

Junction block (front view)

Connector: C-210

AK

<LHD>

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

AC310458

Junction block (front view)

Connector: C-210

AH

<RHD>

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-212

Step 5. Retest the system.
Check that the turn-signal lamps illuminate normally.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

Cope with Intermittent Malfunction 

P.00-5

).

NO : 

Replace the ETACS-ECU.

Step 6. Function diagnosis by using the SWS 
monitor.
Check the SWS communication signal, which are 
related to the right turn-signal lamps.

<Selected item> TURN SIGNAL - TURN-SIG. RH

• Turn-signal lamp switch: RH

• Ignition switch: ON

OK: Normal conditions displayed for all the 
items

Q: Is the check result normal?

Normal conditions are displayed for all the items. : 

Go to Step 7.

Normal condition is not displayed for item 10 or 11. 
: 

Refer to Inspection Procedure L-4 "The 
column switch (lighting and turn-signal lamp 
switch) signal is not received 

P.54C-267

."

Normal condition is not displayed for item No.30. : 

Refer to Inspection Procedure L-2 "The 
ignition switch (IG1) signal is not received 

P.54C-261

."

Step 7. Function diagnosis by using the SWS 
monitor.
Check the SWS communication signal, which are 
related to the left turn-signal lamps.

<Selected item> TURN SIGNAL - TURN-SIG. LH

• Turn-signal lamp switch: LH

• Ignition switch: ON

OK: Normal condition is displayed.

Q: Is the check result normal?

Normal conditions are displayed for all the items. : 

Go to Step 8.

Normal condition is not displayed for item 10 or 11. 
: 

Refer to Inspection Procedure L-4 "The 
column switch (lighting and turn-signal lamp 
switch) signal is not received 

P.54C-267

."

Step 8. Retest the system.
Check that the turn-signal lamps illuminate.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

Cope with Intermittent Malfunction 

P.00-5

).

NO : 

Replace the ETACS-ECU.

Item No.

Item name

Normal condition

Item 10

TURN SIG.RH

ON

Item 11

TURN SIG.LH

OFF

Item 30

IG SW(IG1)

ON

Item No.

Item name

Normal condition

Item 10

TURN SIG.RH

OFF

Item 11

TURN SIG.LH

ON

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-213

INSPECTION PROCEDURE I-2: The hazard warning lamps do not illuminate.

CAUTION

Whenever the ECU is replaced, ensure that the 
input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

If the hazard warning lamps do not illuminate, the 
hazard warning lamp input signal circuit or the 
ETACS-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the hazard warning lamp switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

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

BATTERY

· COMBINATION METER

ETACS-ECU

HAZARD
WARNING
LAMP SWITCH

RELAY
BOX

TURN-SIGNAL
LAMP RELAY: LH

TURN-SIGNAL
LAMP RELAY: RH

INPUT SIGNAL

· HEADLAMP
  ASSEMBLY (LH)

· SIDE TURN SIGNAL
  LAMP (LH)

· REAR COMBINATION
  LAMP (LH)

· COMBINATION METER
· HEADLAMP
  ASSEMBLY (RH)

· SIDE TURN SIGNAL
  LAMP (RH)

· REAR COMBINATION
  LAMP (RH)

J/B SIDE

Hazard Warning Lamp Circuit

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-214

DIAGNOSIS PROCEDURE

Step 1. Check that the turn-signal lamps operate.
Check that the turn-signal lamps illuminate normally.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Inspection Procedure I-1 "The turn 
signal lamps do not illuminate 

P.54C-208

."

Step 2. Pulse check
Check the input signal from the hazard warning lamp 
switch.

OK: The M.U.T.-II/III sounds or the voltmeter 
needle fluctuates.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Refer to Inspection Procedure L-10 "The 
hazard warning lamp switch signal is not 
received 

P.54C-285

."

Step 3. Retest the system.
Check that the hazard warning lamps illuminate.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

Cope with Intermittent Malfunction 

P.00-5

).

NO : 

Replace the ETACS-ECU.

System switch

Check condition

Hazard warning 
lamp switch

When the hazard warning lamp 
switch is turned from off to on