Mitsubishi Grandis. Manual — part 128

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-509

YES :

Go to Step 8.

NO :

Repair the defective connector.

Step 8. Check the wiring harness from D-23-1
seat occupancy sensor connector terminal No.1
to C-220 ETACS-ECU connector terminal No.29.

NOTE:

Prior to the wiring harness inspection, check
intermediate connector C-16, and repair if necessary.

• Check the input line for open circuit.

Q: Is the check result normal?

YES :

Go to Step 9.

NO :

Repair the wiring harness or replace the
inner seat belt (front passenger's side).

Step 9. Retest the system.
Check that the passenger’s seat belt switch signal is
received normally.

Q: Is the check result normal?

YES :

Intermittent malfunction (Refer to GROUP

00

− How to Cope with Intermittent

Malfunction

P.00-5

).

NO :

Replace the ETACS-ECU.

AC310620

Connector: C-220 <RHD>

Junction block (Rear view)

AD

Harness side

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

AC313233

Connector: D-23-1

AC

Harness side

<RHD>

AC312043

Connector: C-16 <RHD>

AH

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

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-510

Inspection procedure Q-21: Signal is not received from the remote controlled mirror switch
(folding/unfolding switch).

CAUTION

Whenever the ECU is replaced, ensure that the
input signal circuit is normal.

COMMENTS ON TROUBLE SYMPTOM

The electric-folding door mirrors work in accordance
with the input signal from the remote controlled
mirror switch. If the input signal is abnormal, the door
mirrors will not work normally.

POSSIBLE CAUSES

• Malfunction of the remote controlled mirror switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

ETACS-
ECU

REMOTE
CONTROLLED
MIRROR SWITCH

<RHD>

<LHD>

Remote Controlled Mirror Switch Input Circuit

FOLD
SWITCH

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

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-511

DIAGNOSTIC PROCEDURE

Step 1. Connector check: C-129 remote
controlled mirror switch connector

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the connector.

Step 2. Check the remote controlled mirror
switch.
Refer to GROUP 51

− Door mirror

P.51-51

.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Replace the remote controlled mirror switch.

Step 3. Resistance measurement at the C-129
remote controlled mirror switch connector.

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Continuity between C-129 remote controlled

mirror switch connector terminal No.1 and body
earth

OK: 2

Ω or less

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Go to Step 4.

AC312031

AB

Connector: C-129

Harness side

<LHD>

AC312043AB

Connector: C-129 <RHD>

Harness side

AC312031

AB

Connector: C-129

Harness side

<LHD>

AC312043AB

Connector: C-129 <RHD>

Harness side

AC312730AC

Connector C-129
(Harness side)

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-512

Step 4. Check the wiring harness between C-129
remote controlled mirror switch connector
terminal No.1 and body earth.

NOTE:

Prior to the wiring harness inspection, check joint
connector C-01 <RH drive vehicles>, and repair if
necessary.

• Check the earth wires 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.

Step 5. Connector check: C-220 ETACS-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair the connector.

AC312031

AB

Connector: C-129

Harness side

<LHD>

AC312043AB

Connector: C-129 <RHD>

Harness side

AC312043AC

Connector: C-01<RHD>

AC312037

Connector: C-220

Junction block (Rear view)

AC

<LHD>

Harness side

AC312047

Connector: C-220

Junction block (Rear view)

AC

<RHD>

Harness side