Mitsubishi Grandis. Manual - part 157

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-90

Inspection Procedure A-6: Communication with the sunroof motor assembly (sunroof-ECU) is not 
possible.

CAUTION

Whenever the ECU is replaced, ensure that the 
power supply circuit, the grounding circuit and 
the communication circuit are normal.

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-91

COMMENTS ON TROUBLE SYMPTOM

The sunroof motor assembly, the power supply 
circuit or the communication circuit for that assembly 
may be defective.

POSSIBLE CAUSES

• Malfunction of the sunroof motor assembly

• Damaged harness wires and connectors

IGNITION
SWITCH (IG2)

SUNROOF MOTOR
ASSEMBLY

CPU

ETACS-ECU

FUSIBLE
LINK

5

FUSE
BOX

Sunroof Motor Assembly and SWS Communication Circuit

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

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-92

DIAGNOSIS PROCEDURE

Step 1. ECU check on the SWS monitor

Check that the power supply and earth lines to the 
ETACS-ECU and the SWS communication lines are 
normal.

• Ignition switch: OFF

ECUS TO BE CHECKED

• ETACS ECU

OK: "OK" is displayed on the "ETACS ECU" 
menu.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Inspection Procedure A-3 
"Communication with the ETACS-ECU is 
not possible" 

P.54C-63

.

Step 2. Connector check: E-07 sunroof motor 
assembly connector

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

Step 3. Voltage measurement at E-07 sunroof 
motor assembly connector.

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Voltage between E-07 sunroof motor assembly 

connector terminal No.1 and body earth

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

AC310651

AB

Connector: E-07 <LHD>             

Harness side

AC310655

AC

Connector: E-07 <RHD>             

Harness side

AC310651

AB

Connector: E-07 <LHD>             

Harness side

AC310655

AC

Connector: E-07 <RHD>             

Harness side

AC209365

AC209365LK

CONNECTOR E-07
(HARNESS SIDE)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-93

Step 4. Check the wiring harness between E-07 
sunroof motor assembly connector terminal No.1 
and fusible link (5).

NOTE: 

Prior to the wiring harness inspection, check 
intermediate connectors C-124, C-128, and repair if 
necessary.

• Check the power supply line for open circuit.

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.

AC310651

AB

Connector: E-07 <LHD>             

Harness side

AC310655

AC

Connector: E-07 <RHD>             

Harness side

AC310614

AV

Connectors: C-124, C-128 <LHD>

C-124

C-128

C-124

C-128

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

AC310628AK

Connector: C-124 <RHD>

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

AC310631AM

Connector: C-128 <RHD>