Mitsubishi Grandis. Manual - part 244

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-438

Inspection Procedure P-5: The door lamp does not illuminate normally.

CAUTION

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

Door Lamp Circuit <LHD>

ETACS-ECU

DOOR
LAMP
(REAR: LH)

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

J/B SIDE

DOOR
LAMP
(REAR: RH)

DOOR
LAMP
(FRONT: LH)

DOOR
LAMP
(FRONT: RH)

DOOR SWITCH
(FRONT: RH)

DOOR SWITCH
(FRONT: LH)

DOOR SWITCH
(REAR: RH)

DOOR SWITCH
(REAR: LH)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-439

COMMENTS ON TROUBLE SYMPTOM

The door lamps are energised through the 
ETACS-ECU. If a door is opened, the relevant door 
lamp will illuminate.
If this function does not work normally, these input 
signal circuit(s) or the ETACS-ECU may be 
defective.

POSSIBLE CAUSES

• Malfunction of the door lamp bulbs

• Malfunction of the door switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

Door Lamp Circuit <RHD>

ETACS-ECU

DOOR
LAMP
(REAR: LH)

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

J/B SIDE

DOOR
LAMP
(REAR: RH)

DOOR
LAMP
(FRONT: LH)

DOOR
LAMP
(FRONT: RH)

DOOR SWITCH
(FRONT: RH)

DOOR SWITCH
(FRONT: LH)

DOOR SWITCH
(REAR: RH)

DOOR SWITCH
(REAR: LH)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-440

DIAGNOSTIC PROCEDURE

Step 1. Connector check: F-11 door lamp (front: 
LH), F-22 door lamp (front: RH) connector, F-09 
door lamp (rear: LH), F-25 door lamp (rear: RH)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-441

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

Step 2. Check the bulbs of the door lamp.

Check that the door lamp bulbs are not burned out.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the door lamp bulb.

AC310209 AE

Connector: F-09

AC311150

AE

Connector: F-11

<LHD>

AC310211

AG

Connector: F-11 <RHD>

AC311147

AG

Connector: F-22 <LHD>

AC310213

AF

Connector: F-22 <RHD>

AC310216

AF

Connector: F-25