Mitsubishi Grandis. Manual — part 106

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-421

Step 2. Voltage measurement at the C-219
ETACS-ECU connector.

(1) Remove the ETACS-ECU, and measure at the

junction block side.

(2) Ignition switch: ON position

(3) Voltage between C-219 ETACS-ECU connector

terminal No.8 and body earth

OK: System voltage

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Go to Step 3.

Step 3. Check the wiring harness between C-219
ETACS-ECU connector terminal No.8 and the
ignition switch (IG1).

NOTE:

Prior to the wiring harness inspection, check junction
block connector C-202, and repair if necessary.

• Check the power supply line for open circuit.

Q: Is the check result normal?

AC312037

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

<LHD>

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>

AC312731AC

Connector C-219
(Junction block side)

2019

7

13

17

18

1615 14

10

11

12

9 8

2

6 5

3

4

1

AC312037

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

<LHD>

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>

AC312035AB

Connector: C-202

Harness side

<LHD>

Junction block (Front view)

AC312045

AB

Connector: C-202

Junction block (Front view)

Harness side

<RHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-422

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 4. Retest the system.
Check that the ignition switch (IG1) 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.

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-423

Inspection Procedure Q-3: The back-up lamp switch signal is not received. <M/T>

CAUTION

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

Back-up Lamp Switch Input Circuit <LHD>

IGNITION
SWITCH (IG1)

BACK-UP
LAMP 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

BACK-UP
LAMP

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-424

COMMENTS ON TROUBLE SYMPTOM

Input signal from the back-up lamp switch is used to
operate the rear wiper. If the signal is abnormal, the
rear wiper will not work normally.

POSSIBLE CAUSES

• Malfunction of the back-up lamp switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

Back-up Lamp Switch Input Circuit <RHD>

IGNITION
SWITCH (IG1)

BACK-UP
LAMP 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

BACK-UP
LAMP