Mitsubishi Lancer Evolution IX. Manual - part 236

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-203

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Check the resistance between the lamp 

connector and body earth.

•

Resistance between A-31 <headlamp (LO) RH> 

headlamp assembly connector terminal No.8 
and body earth

• Resistance between A-39 <headlamp (LO) 

LH> headlamp assembly connector terminal 
No.8 and body earth

•

Resistance between A-21 <headlamp (HI) RH> 

headlamp assembly connector terminal No.2 
and body earth

• Resistance between A-15 <headlamp (HI) 

LH> headlamp assembly connector terminal 
No.2 and body earth

•

Resistance between C-01 <high-beam indicator> 

combination meter connector terminal No.5 
and body earth

OK: 2 

Ω or less

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

AC310446

Connector: C-01
<LHD>

AM

Harness side

AC310456

Connector: C-01
<RHD>

AL

Harness side

AC301541HJ

Connector A-31, A-39
(Harness side)

AC301541HK

Connector A-15, A-21
(Harness side)

AC301541HL

Connector C-01
(Harness side)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-204

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) USING SWS MONITOR

54C-205

• 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) USING SWS MONITOR

54C-206

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