Mitsubishi Lancer Evolution IX. Manual - part 156

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-187

Step 4. Check the wiring harness from A-31 
<headlamp (LO) RH> or A-39 <headlamp (LO) 
LH> headlamp connector terminal No.8, or A-21 
<headlamp (HI) RH> or A-15 <headlamp (HI) LH> 
headlamp connector terminal No.2, or C-01 
<high-beam indicator> combination meter 
connector terminal No.5 to body earth.

AC310543

Connectors: A-15, A-31

AC

<LHD>

A-15

Harness side

A-31

Harness side

A-15

A-31

AC310476

Connectors: A-15, A-31

AC

<RHD>

A-15

Harness side

A-31

Harness side

A-15

A-31

AC310432

Connectors: A-21, A-39

AC

<LHD>

A-21

Harness side

A-39

Harness side

A-21

A-39

AC310434

Connectors: A-21, A-39

AC

<RHD>

A-21

Harness side

A-39

Harness side

A-21

A-39

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-188

• Check the earth wires for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

Step 5. Connector check: A-10X front-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

AC310446

Connector: C-01
<LHD>

AM

Harness side

AC310456

Connector: C-01
<RHD>

AL

Harness side

AC310572AB

Connector: A-10X

Relay box side

10

11

5

9 8 7 6

4 3

1

2

Battery

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-189

Step 6. Check the wiring harness from A-31 

<headlamp (LO) RH> or A-39 <headlamp (LO) 

LH> headlamp connector terminal No.4, or A-21 

<headlamp (HI) RH> or A-15 <headlamp (HI) LH> 

headlamp connector terminal No.1, or C-01 

<high-beam indicator> combination meter 

connector terminal No.5 to A-10X front-ECU 

connector terminal No.6 <low-beam> or No.2 

<high-beam>.

AC310543

Connectors: A-15, A-31

AC

<LHD>

A-15

Harness side

A-31

Harness side

A-15

A-31

AC310476

Connectors: A-15, A-31

AC

<RHD>

A-15

Harness side

A-31

Harness side

A-15

A-31

AC310432

Connectors: A-21, A-39

AC

<LHD>

A-21

Harness side

A-39

Harness side

A-21

A-39

AC310434

Connectors: A-21, A-39

AC

<RHD>

A-21

Harness side

A-39

Harness side

A-21

A-39

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-190

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connector C-129 <high-beam indicator>, and 
repair if necessary.

• Check the output lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

Step 7. Retest the system.
Check that the headlamps and the high-beam indica-
tor lamp illuminate/extinguish normally.

Q: Is the check result normal?

The lamps illuminate normally at both high and low 
beams. : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

Cope with Intermittent Malfunction 

P.00-5

).

When the headlamps do not illuminate : 

Replace 

the headlamp socket.

When the high-beam indicator lamp does not 
illuminate : 

Replace the combination meter.

AC310446

Connector: C-01
<LHD>

AM

Harness side

AC310456

Connector: C-01
<RHD>

AL

Harness side

AC310572AB

Connector: A-10X

Relay box side

10

11

5

9 8 7 6

4 3

1

2

Battery

AC310446

Connector: C-129
<LHD>

AI

AC310454

Connector: C-129
<RHD>

AJ