Mitsubishi Lancer Evolution IX. Manual - part 163

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-215

Step 5. Voltage measurement at the C-219 rear 
fog lamp relay connector

(1) Remove the rear fog lamp relay, and measure at 

the junction block side.

(2) Check the voltage between the rear fog lamp 

relay connector and body earth.

• Voltage between C-219 rear fog lamp relay 

connector terminal No.3 and body earth

• Voltage between C-219 rear fog lamp relay 

connector terminal No.4 and body earth

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Go to Step 6.

Step 6. Check the wiring harness between C-219 
rear fog lamp relay connector (terminal Nos.3 
and 4) and the battery.

AC310448

Junction block (front view)

Connector: C-219

AN

<LHD>

Junction block side

3

1

2
4

AC310458

Junction block (front view)

Connector: C-219

AK

<RHD>

Junction block side

3

1

2
4

AC301541HC

Connector C-219
(Junction block side)

4

2 1

3

AC310449

Connectors: C-209, C-212, C-214, C-219

AC

C-219

<LHD>

C-209

Junction block side

3

1

2
4

C-209

Harness side

C-219

C-214

Harness side

21

7

16 15

17

18

20 19

1

2

3

4

5

6

23 22

24

25

28

26

27

9

8

10

11

14

12

13

C-212(B)

C-214

C-212

Harness side

Junction block (front view)

AC310459

Connectors: C-209, C-212, C-214, C-219

AC

C-219

<RHD>

C-209

Junction block side

3

1

2
4

C-209
Harness side

C-219

C-214

Harness side

21

7

16 15

17

18

20 19

1

2

3

4

5

6

23 22

24

25

28

26

27

9

8

10

11

14

12

13

C-212(B)

C-214

C-212
Harness side

Junction block (front view)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-216

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connector C-126, joint connector C-21 <RH 
drive vehicles> and junction block connectors C-209, 
C-212 and C-214, 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.

Step 7. Connector check: C-228 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the defective connector.

AC310446

Connector: C-126

AJ

<LHD>

AC310455

Connectors: C-21, C-126

AD

<RHD>

C-126

C-21

C-126

C-21

Junction block side

AC310450

Connector: C-228

AH

Junction block 
(rear view)

Harness side

<LHD>

51

52

53

54

55

56

57

58

59

58 5756 55 54 53 52 51 60

74 7372

71 70 69

AC310461

Harness side

Junction block (rear view)

Connector: C-228

AG

<RHD>

51

52

53

54

55

56

57

58

59

58 5756 55 54 53 52 51 60

74 7372

71 70 69

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-217

Step 8. Check the wiring harness between C-219 
rear fog lamp relay connector terminal No.2 and 
C-228 ETACS-ECU connector terminal No.74.

NOTE: 

Prior to the wiring harness inspection, check junction 
block connector C-209, and repair if necessary.

• Check the output lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the wiring harness.

Step 9. Retest the system.
Check that the rear fog 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.

AC310448

Junction block (front view)

Connector: C-219

AN

<LHD>

Junction block side

3

1

2
4

AC310458

Junction block (front view)

Connector: C-219

AK

<RHD>

Junction block side

3

1

2
4

AC310450

Connector: C-228

AH

Junction block 
(rear view)

Harness side

<LHD>

51

52

53

54

55

56

57

58

59

58 5756 55 54 53 52 51 60

74 7372

71 70 69

AC310461

Harness side

Junction block (rear view)

Connector: C-228

AG

<RHD>

51

52

53

54

55

56

57

58

59

58 5756 55 54 53 52 51 60

74 7372

71 70 69

AC310448

Harness side

Junction block (front view)

Connector: C-209

AO

<LHD>

AC310458

Harness side

Junction block (front view)

Connector: C-209

AL

<RHD>

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-218

INSPECTION PROCEDURE J-2: The rear fog lamp or the rear fog lamp indicator does not illuminate 
normally.

CAUTION

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

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

ETACS-ECU

FUSIBLE
LINK

1

COMBINATION
METER

REAR
COMBINATION
LAMP
(REAR FOG)

REAR
FOG
LAMP
RELAY

Rear Fog Lamp Circuit <LHD>