Mitsubishi Grandis. Manual — part 238

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-414

COMMENTS ON TROUBLE SYMPTOM

If the rear personal lamps do 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

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-415

DIAGNOSTIC PROCEDURE

Step 1. SWS monitor data list
<Selected item> ETACS ECU

• Driver's door is open

OK: Normal condition is displayed.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Refer to inspection procedure Q-5 "The
driver's door switch signal is not received
<LH drive vehicles>

P.54C-474

or <RH drive

vehicles>

P.54C-476

."

Step 2. ETACS switch data by using the SWS
monitor

Check the ETACS-ECU signal related to the rear
personal lamp illumination.

• Ignition switch: OFF (key inserted)

• Passenger’s door: Close → Open

• Tailgate: Close → Open

• Rear door (RH): Close → Open

• Rear door (LH): Close → Open

• Driver’s door: Unlock → Lock

• Room lamp on switch: ON

• Room lamp off switch: ON

OK: Normal conditions displayed for all the
items.

Q: Is the check result normal?

Item No.

Item name

Normal
condition

Item 32

DR DOOR SW

ON

Item No.

Item name

Normal
condition

Item 03

KEY REMINSW

OFF

Item No.

Item name

Normal
condition

Item 05

PASS DOOR SW

from OFF
to ON

Item No.

Item name

Normal
condition

Item 07

TRK LID LA SW

from OFF
to ON

Item No.

Item name

Normal
condition

Item 41

R.DOOR(RH) SW

from OFF
to ON

Item No.

Item name

Normal
condition

Item 42

R.DOOR(LH) SW

from OFF
to ON

Item No.

Item name

Normal
condition

Item 21

DR DOR LOK SW

from OFF
to ON

Item 22

DR DOR ULOK SW

from ON
to OFF

Item No.

Item name

Normal
condition

Item 31

RM LMP ON SW

ON

Item No.

Item name

Normal
condition

Item 32

RM LMP OFF SW

ON

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-416

Normal conditions are displayed for all the items. :

Go to Step 3.

Normal condition is not displayed for item No.03 :

Refer to inspection procedure Q-11 "The
key reminder switch signal is not received

P.54C-493

."

Normal condition is not displayed for item No.05,
07, 41or 42 :

Refer to inspection procedure Q-14

"All the door switch signals are not received

P.54C-505

."

Normal condition is not displayed for item No.21
and 32 :

Refer to inspection procedure Q-15 "The

driver's door lock actuator switch signal is
not received <LH drive vehicles>

P.54C-514

or <RH drive vehicles>

P.54C-518

."

Normal condition is not displayed for item No.31 or
32 :

Refer to inspection procedure Q-22 "The
interior lamp "all on" or "all off" switch signal
is not sent to the ETACS-ECU

P.54C-553

."

Step 3. Retest the system.

Check which lamp does not illuminate when the lamp
switches are operated.

Q: Which lamp does not illuminate?

No lamps illuminate :

Go to Step 4.

One of the second seat lamps (RH or LH) or the
third seat lamps (RH or LH) does not illuminate. :

Go to Step 8.

Step 4. Check the rear personal lamp switches.

Check which position (ON or DOOR) of the rear
personal lamp switch does not activate the relevant
lamp.

Q: Which switch position does not activate the lamp?

The lamp illuminates at neither the ON nor DOOR
position. :

Go to Step 5.

The lamp does not illuminate at the DOOR position.
:

Go to Step 7.

The lamp does not illuminate at the ON position. :

Replace the rear personal lamp.

Step 5. Connector check: C-219 ETACS-ECU
connector, E-09 rear personal lamp connector

Q: Is the check result normal?

YES :

Go to Step 6.

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

AC310651

AC310651

AG

Connector: E-09 <LHD>

Harness side

AC310655

AC310655

AH

Connector: E-09 <RHD>

Harness side

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-417

Step 6. Check the wiring harness from C-219
ETACS-ECU connector terminal No.6 to E-09 rear
personal lamp connector terminal No.2.

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 rear personal 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

AC310651

AC310651

AG

Connector: E-09 <LHD>

Harness side

AC310655

AC310655

AH

Connector: E-09 <RHD>

Harness side

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

AC310651

AC310651

AH

Connector: E-11 <LHD>

AC310655

AC310655

AI

Connector: E-11 <RHD>