Mitsubishi Grandis. Manual — part 174

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-158

POSSIBLE CAUSES <RH DRIVE
VEHICLES>

• Malfunction of the power window main switch

• Malfunction of the power window sub switch

(front: LH), power window sub switch (rear: RH)
or power window sub switch (rear: LH)

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. ECU check by using the SWS monitor.

Check that the power supply and earth lines to the
power window main switch (power window module)
and the SWS communication lines are normal.

• Turn the ignition switch to the ON position.

ECUS TO BE CHECKED

• P/W MODULE

OK: "OK" is displayed on the "P/W
MODULE" menu.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Refer to Inspection Procedure A-5
"Communication with the power window
main switch (power window module) is not
possible

P.54C-77

."

Step 2. Check the power window sub switch.

Check that each power window works by means of
the respective power window sub switch when the
power window lock switch is turned off.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Refer to inspection procedure D-3 "Relevant
power window(s) do not work by means of
the front and rear passenger's power
window sub switches

P.54C-137

."

Step 3. Confirm communication data by using the
SWS monitor.

Check the SWS communication signal from the
power window lock switch to the ETACS-ECU.

<Selected item> DOOR CNT. COM.

• Insert a probe between a power window sub

switch of a door of which power window does not
work and the power window main switch (For the
insertion point, refer to

P.54C-10

).

• Turn the ignition switch to the ON position.

• Power window lock switch: OFF

OK: Normal condition is displayed.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Replace the power window main switch.

Item No.

Item name

Normal
condition

Item CB

P/W LOCK SW

OFF

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-159

Step 4. Confirm communication data by using the
SWS monitor.

Check the SWS communication signals, which are
used when the front and/or rear passenger's door
power windows are operated by the power window
main switch.

<Selected item> DOOR CNT. COM.

• Insert a probe between a power window sub

switch of a door of which power window does not
work and the power window main switch (For the
insertion point, refer to

P.54C-10

).

• Turn the ignition switch to the ON position.

• Are normal conditions displayed when each

switch of the power window main switch is
operated?

OK: Normal conditions are displayed for all
the items.

Q: Are the check result normal?

Normal conditions are displayed for all of items C0,
C1 and C2 when the front passenger's power
window does not work. :

Go to Step 7.

Normal conditions are displayed for none of items
C0, C1 and C2 when the front passenger's power
window does not work. :

Go to Step 5.

Normal conditions are displayed for all of items C4,
C5 and C6 when the rear right power window does
not work. :

Go to Step 13.

Normal conditions are displayed for none of items
C4, C5 and C6 when the rear right power window
does not work. :

Go to Step 11.

Normal conditions are displayed for all of items C8,
C9 and CA when the rear left power window does
not work. :

Go to Step 19.

Normal conditions are displayed for none of items
C8, C9 and CA when the rear left power window
does not work. :

Go to Step 17.

Normal condition is displayed for any of the items.
:

Replace the power window main switch.

Step 5. Connector check: F-05 power window
main switch connector.

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair the connector.

Item No.

Item name

Normal
condition

Item C0

PASS DOR UP

ON

Item C1

PASS DOR DOWN

ON

Item C2

PASS DOR AUTO

ON

Item C4

REAR RH UP

ON

Item C5

REAR RH DOWN

ON

Item C6

REAR RH AUTO

ON

Item C8

REAR LH UP

ON

Item C9

REAR LH DOWN

ON

Item CA

REAR LH AUTO

ON

AC311150

AB

Connector: F-05

Harness side

<LHD>

10

1

6

14

5

12

13

4

11

7

2

3

8

9

F-05(B)

AC310213

Connector: F-05

Harness side

<RHD>

10

1

6

14

5

12

13

4

11

7

2

3

8

9

F-05(B)

AB

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-160

Step 6. Check the wiring harness from F-05
power window main switch connector terminal
No.11 to the inserted probe.

NOTE:

Prior to the wiring harness inspection, check
intermediate connectors C-14, C-27, and repair if
necessary.

• Check the communication lines for open circuit.

Q: Is the check result normal?

YES :

Go to Step 9.

NO :

Repair the wiring harness.

AC311150

AB

Connector: F-05

Harness side

<LHD>

10

1

6

14

5

12

13

4

11

7

2

3

8

9

F-05(B)

AC310213

Connector: F-05

Harness side

<RHD>

10

1

6

14

5

12

13

4

11

7

2

3

8

9

F-05(B)

AB

AC310615

AB

Connector: C-14 <LHD>

AC310631

Connector: C-14 <RHD>

AG

AC310613

Connector: C-27 <LHD>

AJ

AC310628AC

Connector: C-27 <RHD>

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-161

Step 7. Connector check: F-15 power window sub
switch (front: RH) connector <LH drive vehicles>
or F-26 power window sub switch (front: LH)
connector <RH drive vehicles>.

Q: Is the check result normal?

YES :

Go to Step 8.

NO :

Repair the connector.

AC311147

AB

Connector: F-15

<LHD>

Harness side

F-15(B)

AC310211

AB

Connector: F-26

Harness side

<RHD>

F-26(B)