Mitsubishi Grandis. Manual - part 112

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-445

COMMENTS ON TROUBLE SYMPTOM

Input signal from the power window main switch is 
used in order to check the power window main 
switch and confirm how the system is communicating 
with the ETACS-ECU. If the communication line is 
defective, the power windows will not work normally.

POSSIBLE CAUSES

• Malfunction of the power window main switch

• Damaged harness wires and connectors

POWER
WINDOW RELAY

ETACS-ECU

DIAGNOSIS
CONNECTOR

POWER WINDOW
MAIN SWITCH

FUSIBLE
LINK

5

FRONT SIDE

J/B SIDE

CPU

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

Power Window Main Switch Input Circuit <RHD>

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-446

DIAGNOSTIC PROCEDURE

Step 1. Check the operation by using the power 
window main switch.
Check if each window can be operated by means of 
the power window main switch.

Q: Can each power window be operated by means of 

the power window main switch?
YES : 

Go to Step 2.

NO : 

Go to Step 5.

Step 2. Connector check: C-221 ETACS-ECU 
connector and F-05 power window main switch 
connector

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

AC312037

Connector: C-221  <LHD>

Junction block (Rear view)

AD

Harness side

AC312047

Connector: C-221  <RHD>

Junction block (Rear view)

AD

Harness side

AC312083

AC

Connector: F-05 <LHD>

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

AC312089

AC

Connector: F-05 <RHD>

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-447

Step 3. Check the wiring harness between C-221 
ETACS-ECU connector terminal No.59 and F-05 
power window main switch connector terminal 
No.4.

NOTE: 

Prior to the wiring harness inspection, check 
intermediate connectors C-27 <LH drive vehicles>, 
C-14 <RH drive vehicles> and joint connector C-01, 
and repair if necessary.

• Check the communication lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the wiring harness.

AC312037

Connector: C-221  <LHD>

Junction block (Rear view)

AD

Harness side

AC312047

Connector: C-221  <RHD>

Junction block (Rear view)

AD

Harness side

AC312083

AC

Connector: F-05 <LHD>

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

AC312089

AC

Connector: F-05 <RHD>

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

AC312032

AC

Connectors: C-01,C-27 
<LHD>

C-01

C-27

C-01

C-27

AC312044AB

Connectors: C-01,C-14 
<RHD>

C-01

C-01

C-14

C-14

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-448

Step 4. Replace the power window main switch, 
and then retest the system.

Replace the power window main switch, and check 
that the power window main switch signal is 
received.
(1) Replace the power window main switch.
(2) Check that the power window main switch signal 

is received.

Q: Is the check result normal?

YES : 

The procedure is complete.

NO : 

Replace the ETACS-ECU.

Step 5. Voltage measurement at the F-05 power 
window main switch connector.

(1) Remove the power window main switch, and 

measure at the wiring harness side.

(2) Ignition switch: ON position

(3) Voltage between F-05 power window main switch 

connector terminal No.6 and body earth

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Go to Step 6.

Step 6. Connector check: C-217 power window 
relay connector

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the defective connector.

AC312083

AC

Connector: F-05 <LHD>

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

AC312089

AC

Connector: F-05 <RHD>

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

AC312731AG

Connector F-05
(Harness side)

10

1

6

14

5

12

13

4

11

7

2

3

8

9

AC312035

Connector: C-217 <LHD>

AE

Junction block side

Junction block (Front view)

AC312045

Connector: C-217 <RHD>

AE

Junction block side

Junction block (Front view)