Mitsubishi Grandis. Manual - part 232

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-390

Step 12. Check the wiring harness from C-219 
ETACS-ECU connector terminal No.5 to E-02 
room lamp connector terminal No.8.

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-391

NOTE: 

Prior to the wiring harness inspection, check 
intermediate connector E-11 and junction block 
connector C-211, and repair if necessary.

• Check the earth wires for open circuit.

Q: Is the check result normal?

YES : 

Replace the room lamp.

NO : 

Repair the wiring harness.

AC310626

Connector: C-219

Junction block (Rear view)

<LHD>

AB

Junction block side

AC310620

Connector: C-219

Junction block 
(Rear view)

<RHD>

AB

Junction block side

AC310652

AB

Connectors: E-02, E-11

Harness side

E-02

E-11

E-02

E-11

<Vehicles with 
sunroof-LHD>

AC310656

AB

Connectors: E-02, E-11

Harness side

E-02

E-11

E-02

E-11

<Vehicles with 
sunroof-RHD>

AC310623

AC310623

Connector: C-211

AQ

<LHD>

Junction block (Front view)

Harness side

3

1

2

AC310618

AC310618

Connector: C-211 <RHD>

AS

Harness side

Junction block (Front view)

3

1

2

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-392

Inspection Procedure P-2: The room lamp does not illuminate normally. <Vehicles without keyless 
entry system>

CAUTION

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

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-393

COMMENTS ON TROUBLE SYMPTOM

If the room lamp does not illuminate or extinguish 
normally, wiring harness connector(s) or the bulb 
may be defective.

POSSIBLE CAUSES

• Malfunction of the interior lamp switches

• Malfunction of the room lamp bulbs

• Malfunction of the rear personal lamp bulbs

• Damaged harness wires and connectors

ETACS-ECU

J/B SIDE

ROOM LAMP

INTERIOR
LAMP
SWITCH

REAR
PERSONAL
LAMP

FOR
SECOND
SEAT: LH

REAR
PERSONAL
LAMP

FOR
SECOND
SEAT: RH

REAR
PERSONAL
LAMP

FOR
THIRD
SEAT: LH

REAR PERSONAL LAMP
(FOR THIRD SEAT: RH)

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

Room Lamp and Rear Personal Lamp Circuit