Mitsubishi Grandis. Manual - part 100

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-397

Step 6. Connector check: C-219 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the defective connector.

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

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-398

Step 7. Check the wiring harness from C-219 
ETACS-ECU connector terminal No.6 to G-12 
luggage compartment lamp connector terminal 
No.1.

NOTE: 

Prior to the wiring harness inspection, check 
intermediate connector G-14, junction block 
connector C-210, and repair if necessary.

• Check the power supply line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Repair the wiring harness.

Step 8. Retest the system.
Check that the luggage compartment lamp 
illuminates and extinguishes normally.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

Cope with Intermittent Malfunction 

P.00-5

).

NO : 

Replace the luggage compartment lamp.

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

AC310222

Connector: G-12

AI

G-12

Harness side

AC310623

Connector: C-210

AN

<LHD>

Junction block (Front view)

Harness side

AC310618

Connector: C-210 <RHD>

AO

Junction block (Front view)

Harness side

AC310222

AC310222

Connector: G-14

AK

2

1

4

3

13

8

11

10

5

7

12

6

14

9

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-399

Inspection Procedure P-5: The door lamps do 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) NOT USING SWS MONITOR

54B-400

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)