Mitsubishi Grandis. Manual — part 233

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-394

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 room
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-395

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, 41 or 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 22 :

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 that the right or left room lamp illuminates
when the interior lamp switch is operated.

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Go to Step 4.

Step 4. Connector check: C-219 ETACS-ECU
connector and E-02 room lamp connector

Q: Is the check result normal?

YES :

Go to Step 5.

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

AD

Connector: E-02 <LHD>

Harness side

AC310655

AE

Connector: E-02 <RHD>

Harness side

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-396

Step 5. Check the wiring harness from C-219
ETACS-ECU connector terminal No.6 to E-02
room lamp connector terminal No.10.

NOTE:

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

• Check the power supply line 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

AC310651

AD

Connector: E-02 <LHD>

Harness side

AC310655

AE

Connector: E-02 <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>

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-397

Step 6. Check the room lamp switch.

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

Q: Which switch position does not activate the lamp?

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

Go to Step 7.

The lamp does not illuminate at the ON position. :

Go to Step 7.

The lamp does not illuminate at the DOOR position.
:

Go to Step 9.

Step 7. Connector check: E-02 room lamp
connector

Q: Is the check result normal?

YES :

Go to Step 8.

NO :

Repair the defective connector.

Step 8. Check the bulbs of the room lamp.

Check that the room lamp bulbs are not burned out.

Q: Is the check result normal?

YES :

Replace the room lamp.

NO :

Replace the room lamp bulb.

Step 9. Connector check: E-02 room lamp
connector

Q: Is the check result normal?

YES :

Go to Step 10.

NO :

Repair the defective connector.

Step 10. Check the bulbs of the room lamp.

Check that the room lamp bulbs are not burned out.

Q: Is the check result normal?

YES :

Go to Step 11.

NO :

Replace the room lamp bulb.

AC310651

AD

Connector: E-02 <LHD>

Harness side

AC310655

AE

Connector: E-02 <RHD>

Harness side

AC310651

AD

Connector: E-02 <LHD>

Harness side

AC310655

AE

Connector: E-02 <RHD>

Harness side