Mitsubishi Grandis. Manual — part 110

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-437

Step 4. Connector check: C-219 ETACS-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Repair the defective connector.

Step 5. Check the wiring harness between D-02
front door switch (RH) connector terminal No.1
and C-219 ETACS-ECU connector terminal No.10.

NOTE:

Prior to the wiring harness inspection, check joint
connector C-210, and repair if necessary.

• Check the input line for open circuit.

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair the wiring harness.

Step 6. Retest the system.
Check that the front door switch (RH) signal is
received normally.

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 :

Replace the ETACS-ECU.

AC312047

Connector: C-219

Junction block (Rear view)

Junction block side

AB

3

1

2

14

4

5

7 6

8

1110 9

1312

17

15

16

18

19

20

<RHD>

AC312058

AB

Harness side

Connector: D-02 <RHD>

AC312047

Connector: C-219

Junction block (Rear view)

Junction block side

AB

3

1

2

14

4

5

7 6

8

1110 9

1312

17

15

16

18

19

20

<RHD>

AC312045

Harness side

AC

Connector: C-210 <RHD>

7

15

5

6

1413

2

9

12

4 3

10

11

1

8

Junction block (Front view)

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-438

Inspection Procedure Q-6: The column switch (lighting, turn-signal lamp and headlamp washer
switch) signal is not received.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

Input signal from the column switch (lighting,
turn-signal lamp and headlamp washer switch) is
used to operate the functions below. If the signal is
abnormal, these functions will not work normally.

• Lamp reminder function

• Headlamp and tail lamp

• Fog lamp

• Turn signal lamp

• Headlamp washer

POSSIBLE CAUSES

• Malfunction of the column switch

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Check the column switch connector.
Check that the wiper and washer switch connector,
the lighting switch connector and the switch body
connector are in good condition.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the defective connector.

Step 2. Check the column switch (lighting switch
and switch body).
Refer to GROUP 54A

− Column switch

P.54A-103

.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Replace the column switch.

Step 3. Use the MUT-III to confirm a diagnosis
code.
Check that the ETACS-ECU sets a diagnosis code.

Q: Is the diagnosis code set?

YES :

Refer to diagnosis code chart

P.00-5

.

NO :

Go to Step 4.

Step 4. Retest the system.
Replace the column switch, and check if the column
switch (lighting, turn-signal lamp and headlamp
washer switch) sends signal.
(1) Replace the column switch.
(2) Check if the column switch (lighting and

turn-signal switch) sends signal.

Q: Is the check result normal?

YES :

The procedure is complete.

NO :

Replace the ETACS-ECU.

COLUMN-ECU

DIMMER·
PASSING SWITCH

TURN-SIGNAL
LAMP SWITCH

LIGHTING
SWITCH

HEADLAMP
WASHER SWITCH

COLUMN SWITCH

Lighting Switch Input Circuit

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-439

Inspection Procedure Q-7: The column switch (windshield wiper washer and rear wiper washer
switch) signal is not received.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

Input signal from the column switch (wiper switch) is
used to operate the functions below. If the signal is
abnormal, these functions will not work normally.

• Windshield wiper and washer

• Rear wiper and washer

POSSIBLE CAUSES

• Malfunction of the column switch

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. Use the MUT-III to confirm a diagnosis
code.
Check that the ETACS-ECU sets a diagnosis code.

Q: Is the diagnosis code set?

YES :

Refer to diagnosis code chart

P.00-5

.

NO :

Go to Step 2.

Step 2. Retest the system.
Replace the column switch, and check if the column
switch (windshield wiper washer and rear wiper
washer switch) sends signal.
(1) Replace the column switch.
(2) Check if the column switch (windshield

wiper/washer and rear wiper washer switch)
sends signal.

Q: Is the check result normal?

YES :

The procedure is complete.

NO :

Replace the ETACS-ECU.

WINDSHIELD
WASHER
SWITCH

REAR
WIPER
SWITCH

REAR
WASHER
SWITCH

WINDSHIELD
WIPER SWITCH

UPPER SIDE

COLUMN SWITCH

COLUMN-ECU

Windshield Wiper and Washer Switch Input Circuit

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-440

Inspection Procedure Q-8: The windshield intermittent wiper volume signal is not received.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The intermittent wiper interval is calculated in
accordance with the input signal from the windshield
intermittent wiper volume. If this signal is abnormal,
the wiper interval can not be adjusted.

POSSIBLE CAUSES

• Malfunction of the column switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

COLUMN
SWITCH

WINDSHIELD
INTERMITTENT
WIPER INTERVAL
ADJUSTING KNOB

UPPER SIDE

ETACS-
ECU

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

Windshield Intermittent Wiper Interval Adjusting Knob Input Circuit