Mitsubishi Grandis. Manual - part 180

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-182

Step 23. Resistance measurement at F-19 power 
window motor (rear: RH) connector.

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Resistance between F-19 power window motor 

(rear: RH) connector terminal No.6 and body 
earth.

OK: 2 

Ω or less

Q: Is the check result normal?

YES : 

Go to Step 25.

NO : 

Go to Step 24.

Step 24. Check the wiring harness from F-19 
power window motor (rear: RH) connector 
terminal No.6 to body earth.

NOTE: 

Prior to the wiring harness inspection, check 
intermediate connector D-03, and repair if necessary.

• Check the input and output lines to the revolution 

detection sensor for open or short circuit.

Q: Is the check result normal?

YES : 

Go to Step 25.

NO : 

Repair the wiring harness.

AC310216

Connector: F-19

F-19(B)

AC

Harness side

AC311338

Connector F-19
(Harness Side)

AB

AC310216

Connector: F-19

F-19(B)

AC

Harness side

AC310633 AB

Connector: D-03 <LHD>

D-03(B)

AC310205

AB

Connector: D-03 <RHD>

D-03(B)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-183

Step 25. Connector check: F-18 power window 
sub switch (rear: RH) connector.

Q: Is the check result normal?

YES : 

Go to Step 26.

NO : 

Repair the defective connector.

Step 26. Check the wiring harness from F-18 
power window sub switch (rear: RH) connector 
terminal Nos.2, 8 and 3 to F-19 power window 
motor (rear: RH) connector terminal Nos.2, 4 and 
5.

• Check the input and output lines to the revolution 

detection sensor for open or short circuit.

Q: Is the check result normal?

YES : 

Go to Step 27.

NO : 

Repair the wiring harness.

Step 27. Retest the system.

After the power window sub switch (rear: RH) is 
replaced, check that the rear right door anti-trap 
function can be operated by the power window sub 
switch.
(1) Replace the power window sub switch (rear: RH).
(2) Check that the rear right power window anti-trap 

function works.

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 power window motor (rear: 
RH).

Step 28. Connector check: F-01 power window 
motor (rear: LH) connector.

Q: Is the check result normal?

YES : 

Go to Step 29.

NO : 

Repair the defective connector.

Step 29. Resistance measurement at F-01 power 
window motor (rear: LH) connector.

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Resistance between F-01 power window motor 

(rear: LH) connector terminal No.6 and body 
earth.

OK: 2 

Ω or less

Q: Is the check result normal?

YES : 

Go to Step 31.

NO : 

Go to Step 30.

AC310216

Connector: F-18

F-18(B)

AB

Harness side

AC310216

AC310216

Connectors: F-18, F-19

F-18(B)

AD

Harness side

F-18

F-19(B)

Harness side

F-19

AC310209

Connector: F-01

F-01(B)

AC

Harness side

AC310209

Connector: F-01

F-01(B)

AC

Harness side

AC311338

Connector F-01
(Harness Side)

AD

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-184

Step 30. Check the wiring harness from F-01 
power window motor (rear: LH) connector 
terminal No.6 to body earth.

NOTE: 

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

• Check the input and output lines to the revolution 

detection sensor for open or short circuit.

Q: Is the check result normal?

YES : 

Go to Step 31.

NO : 

Repair the wiring harness.

Step 31. Connector check: F-02 power window 
sub switch (rear: LH) connector.

Q: Is the check result normal?

YES : 

Go to Step 32.

NO : 

Repair the defective connector.

Step 32. Check the wiring harness from F-02 
power window sub switch (rear: LH) connector 
terminal Nos.8, 2 and 3 to F-01 power window 
motor (rear: LH) connector terminal Nos.4, 2 and 
5.

• Check the input and output lines to the revolution 

detection sensor for open or short circuit.

Q: Is the check result normal?

YES : 

Go to Step 33.

NO : 

Repair the wiring harness.

Step 33. Retest the system.

After the power window sub switch (rear: LH) is 
replaced, check that the rear left door anti-trap 
function can be operated by the power window sub 
switch.
(1) Replace the power window sub switch (rear: LH).
(2) Check that the rear left power window anti-trap 

function works.

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 power window motor (rear: LH).

AC310209

Connector: F-01

F-01(B)

AC

Harness side

AC310207

AB

Connector: D-16

AC310209

Connector: F-02

F-02(B)

AB

Harness side

AC310210

AC310210

Connectors: F-01, F-02

F-02(B)

AB

Harness side

F-01(B)

F-02

F-01

Harness side

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-185

Inspection Procedure D-7: The power window timer function does not work normally.

CAUTION

Whenever the ECU is replaced, ensure that the 
input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

If the power window timer function does not work 
normally, these input signal circuit(s), the power 
window main switch or the ETACS-ECU may be 
defective.

POSSIBLE CAUSES

• Malfunction of the driver's door switch

• Malfunction of the power window main switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step 1. ECU check by using the SWS monitor

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

• Turn the ignition switch from the ON to the OFF 

position.

ECUS TO BE CHECKED

• ETACS ECU

• P/W MODULE

OK: "OK" are displayed for all the items

NOTE: "OK" is displayed for the power window 
switch (power window module) for approximately one 
minute, and then changed to "NG". However, only 
"OK" is displayed for the ETACS-ECU.

Q: Are the check result normal?

"OK" are displayed for all the items : 

Go to Step 2.

"NG" is displayed on the "ETACS ECU" menu. : 

Refer to Inspection Procedure A-3 
"Communication with the ETACS-ECU is 
not possible 

P.54C-63

."

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

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

P.54C-77

."

Step 2. Function diagnosis by using the SWS 
monitor

Check the SWS communication signal, which are 
related to the power window timer function.

<Selected item> POWER WINDOW

• Turn the ignition switch from the ON to the OFF 

position.

NOTE: For item No.33 "P/W SW ACCEPT", 
"PERMIT" is displayed for approximately 30 seconds 
after the ignition switch is turned off, and then 
change to "PROHIBIT". In addition, on item No.71 
"P/W MODULE", "NORMAL ACK" is changed to 
"INPUT CHECK" momentarily, when the power 
window main switch is operated for approximately 30 
seconds after the ignition switch is turned off.

OK: Normal conditions are displayed for all 
the items.

Q: Are the check result normal?

Normal conditions are displayed for all the items. : 

Go to Step 3.

Normal condition is not displayed for item No.30 : 

Refer to inspection procedure Q-2 "The 
ignition switch (IG1) signal is not received 

P.54C-460

."

Normal condition is not displayed for item No.33 : 

Replace the ETACS-ECU.

Normal condition is not displayed for item No.71 : 

Replace the power window main switch.

Step 3. SWS monitor data list

Check the SWS communication signal, which are 
related to the power window timer function.

<Selected item> ETACS ECU

• Driver's door: open

OK: Normal condition is displayed.

Q: Is the check result normal?

Item No.

Item name

Normal 
conditions

Item 30

IG SW IG1

OFF

Item 33

P/W SW ACCEPT

PERMIT

Item 71

P/W ECU ACK

NORMAL 
ACK

Item No.

Item name

Normal 
condition

Item 32

DR DOOR SW

ON