Mitsubishi Grandis. Manual - part 81

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-321

DIAGNOSTIC PROCEDURE

Step 1. Confirm which turn-signal lamp is 
defective.

Q: Which turn-signal lamp fails to illuminate 

correctly?
Front turn-signal lamp : 

Go to Step 2.

Side turn-signal lamp : 

Go to Step 7.

Rear turn-signal lamp : 

Go to Step 12.

Step 2. Connector check: A-33 front turn-signal 
lamp (RH) or A-23 front turn-signal lamp (LH) 
connector.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

AC310403

A-23 (B)

AI

Connector: A-23 <LHD>

Harness side

AC310398

A-23 (B)

AI

Connector: A-23 <RHD>

Harness side

AC310401

Connector: A-33 <LHD>

Harness side

AI

A-33 (B)

AC310396

Connector: A-33 <RHD>

Harness side

AG

A-33 (B)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-322

Step 3. Check the bulb(s) of the turn-signal 
lamps.

Check the bulb(s) of the defective lamp.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Replace the bulb(s) of the defective lamp.

Step 4. Resistance measurement at the A-33 front 
turn-signal lamp (RH) or A-23 front turn-signal 
lamp (LH) connector.

(1) Disconnect the connector, and measure at the 

AC310403

A-23 (B)

AI

Connector: A-23 <LHD>

Harness side

AC310398

A-23 (B)

AI

Connector: A-23 <RHD>

Harness side

AC310401

Connector: A-33 <LHD>

Harness side

AI

A-33 (B)

AC310396

Connector: A-33 <RHD>

Harness side

AG

A-33 (B)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-323

wiring harness side.

(2) Resistance measurement between the defective 

lamp connector terminal and body earth.

• Resistance between A-33 front turn-signal 

lamp (RH) connector terminal No.1 and body 
earth

• Resistance between A-23 front turn-signal 

lamp (LH) connector terminal No.1 and body 
earth

OK: 2 

Ω or less

Q: Is the check result normal?

YES : 

Go to Step 16.

NO : 

Go to Step 5.

Step 5. Connector check: A-40 earth connector 
<front turn-signal lamp (RH)> and A-25 earth 
connector <front turn-signal lamp (LH)>.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the connector.

AC310506BO

Connectors A-23, A-33
(Harness side)

AC310403

A-25 (GR)

AE

Connector: A-25 <LHD>

Harness side

AC310398

A-25 (GR)

AE

Connector: A-25 <RHD>

Harness side

AC310401

Connector: A-40 <LHD>

Harness side

AE

A-40 (GR)

AC310396

Connector: A-40 <RHD>

Harness side

AE

A-40 (GR)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-324

Step 6. Check the wiring harness from A-33 front 
turn-signal lamp (RH) connector terminal 
No.1and A-40 earth connector terminal No.3 or 
A-23 front turn-signal lamp (LH) connector 
terminal No.1 and A-25 earth connector terminal 
No.6.