Mitsubishi Grandis. Manual — part 248

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-454

Step 4. ECU check by using the SWS monitor

Check that the power supply and earth lines to the
ETACS-ECU and the SWS communication lines are
normal.

• Ignition switch: OFF

ECUS TO BE CHECKED

• ETACS ECU

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

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

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

P.54C-63

."

Step 5. SWS monitor data list
<Selected item> ETACS ECU

• Driver's door is open

OK: Normal condition is displayed.

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Refer to inspection procedure Q-5 "The
driver's door switch signal is not received
<LH drive vehicles>

P.54C-474

or <RH drive

vehicles>

P.54C-476

."

Step 6. ETACS switch data by using the SWS
monitor

Check the SWS communication signal, which is
related to the door-ajar warning lamp.

• Passenger’s door: Open

• Tailgate: Open

• Rear door (RH): Open

• Rear door (LH): Open

OK: Normal conditions displayed for all the
items.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Refer to inspection procedure Q-14 "All the
door switch signals are not received

P.54C-505

."

Step 7. ETACS ANALOG data by using the SWS
monitor.

Check the ETACS-ECU signal related to the
door-ajar warning lamp.

• Set the simulated vehicle speed at approximately

10km/h.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES :

Go to Step 8.

NO :

Refer to inspection procedure Q-25 "The
vehicle speed signal is not received

P.54C-568

."

Item No.

Item name

Normal
condition

Item 32

DR DOOR SW

ON

Item No.

Item name

Normal
condition

Item 05

PASS DOOR SW

ON

Item No.

Item name

Normal
condition

Item 07

TRK LID LA SW

ON

Item No.

Item name

Normal
condition

Item 41

R.DOOR(RH) SW

ON

Item No.

Item name

Normal
condition

Item 42

R.DOOR(LH) SW

ON

Item No.

Item name

Normal condition

Item 03

SPEED SENSOR

8

− 10 km/h

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-455

Step 8. MUT-III actuator test

Perform the actuator test for the combination meter,
and check that the door-ajar warning lamp illuminate
(Refer to GROUP 54A

− Combination Meter

P.54A-78

).

Q: Is the check result normal?

YES :

Replace the ETACS-ECU.

NO :

Replace the combination meter.

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-456

INPUT SIGNAL PROCEDURES

Inspection Procedure Q-1: The ignition switch (ACC) signal is not received.

CAUTION

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

Ignition Switch (ACC) Input Circuit <LHD>

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

ETACS-ECU

IGNITION
SWITCH (ACC)

J/B SIDE

RELAY
BOX

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-457

COMMENTS ON TROUBLE SYMPTOM

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

• Sunroof

• Windshield wiper and washer

• Rear wiper and washer

• Headlamp washer

• Electric retractable remote controlled door mirror

• Interior lamp automatic-shutdown

POSSIBLE CAUSES

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

Ignition Switch (ACC) Input Circuit <RHD>

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

ETACS-ECU

IGNITION
SWITCH (ACC)

J/B SIDE

RELAY
BOX