Mitsubishi Grandis. Manual - part 103

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-409

<LH drive vehicles> Prior to the wiring harness 
inspection, check intermediate connector C-14 <door 
switch (front: RH)>, C-16 <door switch (front: RH), 
door switch (front: LH)>, C-27 <door switch (front: 
LH)>, D-03 <door switch (rear: RH)>, D-16 <door 
switch (rear: LH)>, joint connector C-01 <door switch 
(front: RH) and door switch (front: LH)>, junction 
block connector C-210, and repair if necessary.

AC310613

AE

Connector: C-01 <LHD>

AC310616

AD

Connectors: C-14, C-16

C-14

C-16

C-14

C-16

9

21

33

35

24

12

3 4

7

8

5 6

39

28

41

30

18

4243

31

1920

32

40

29

1617

38

27

15

37

36

26

14

13

25

2

1

34

23

11

10

22

<LHD>

AC310613

Connector: C-27 <LHD>

AJ

AC310623

Connector: C-210 <LHD>

AS

Harness side

Junction block (Front view)

AC310633AC

Connector: D-03 <LHD>

D-03 (B)

9

3

2

1
5 6 7 8

4

10

AC310207

AE

9

3

2

1
5 6 7 8

4

10

Connector: D-16 

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-410

NOTE: 

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-411

<RH drive vehicles> Prior to the wiring harness 
inspection, check intermediate connector C-14 <door 
switch (front: RH)>, C-16 <door switch (front: RH) 
and door switch (front: LH)>, C-27 <door switch 
(front: LH)>, D-03 <door switch (rear: RH)>, D-16 
<door switch (rear: LH)>, junction block connector 
C-210, and repair if necessary.

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 : 

Repair the wiring harness.

AC310632 AR

Connectors: C-14, C-16

C-14

C-16

C-14

C-16

9

21

33

35

24

12

3 4

7

8

5 6

39

28

41

30

18

4243

31

1920

32

40

29

1617

38

27

15

37

36

26

14

13

25

2

1

34

23

11

10

22

<RHD>

AC310628AN

Connector: C-27 <RHD>

AC310618

Connector: C-210 <RHD>

AQ

Harness side

Junction block (Front view)

AC310205

AC

D-03 (B)

9

3

2

1
5 6 7 8

4

10

Connector: D-03 <RHD>

AC310207

AC310207

AF

9

3

2

1
5 6 7 8

4

10

Connector: D-16 <RHD>

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-412

Inspection Procedure P-6: Interior lamp automatic shutoff function does not work normally. <Vehicles 
with keyless entry system>

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The ETACS-ECU operates the interior lamp 
automatic-shutdown function in accordance with the 
input signals below.

• Ignition switch (ACC)

• Ignition switch (IG1)

• Driver's door switch

• All of the door switches

• Interior lamp loaded signal

If this function does not work normally, these input 
signal circuit(s) or the ETACS-ECU may be 
defective. Note that this function can be 
disabled/enabled by the adjustment function (default 
setting; enabled).

POSSIBLE CAUSES

• Malfunction of the door switches

• Malfunction of the room lamp

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Check the power supply circuit.
When the ignition switch is turned to the LOCK 
(OFF) position, check if the hazard warning lamps 
illuminate.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to inspection procedure A-2 "Check 
the ETACS-ECU battery power supply 
circuit 

P.54B-87

."

INPUT SIGNAL

KEY CYLINDER
ILLUMINATION
LAMP

· ROOM LAMP

· DOOR LAMP AND
  LUGGAGE
  COMPARTMENT
  LAMP

· REAR PERSONAL
  LAMP

KEEP RELAY

LOAD
DETERMINATION
CIRCUIT

J/B SIDE

· ALL DOOR
  SWITCH
· FRONT DOOR
  SWITCH
· IGNITION
  SWITCH (ACC)
· IGNITION
  SWITCH (IG1)
· INTERIOR LAMP
  LOADED SIGNAL

ETACS-ECU

FUSIBLE
LINK

26

Interior Lamp Automatic Shut-off Function Circuit