Mitsubishi Grandis. Manual - part 57

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-225

Step 3. Customize function by using the SWS 
monitor.
Use the SWS monitor customize function to confirm 
that "SPEED SEN WIP" is set to "W.FUNCTION".
The SWS monitor must be used in order to confirm 
and change that setting. Use the SWS monitor to 
confirm and/or change the customized function.

CAUTION

The SWS monitor must be used in order to 
confirm and change that setting. Use the SWS 
monitor to confirm and/or change the 
customized function.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Use the SWS monitor customize function to 
set the "SPEED SEN WIP" to 
"W.FUNCTION" (Refer to GROUP 54C 

− 

Customize function 

P.54C-574

).

Step 4. Retest the system.
(1) Replace the ETACS-ECU.
(2) Check that the vehicle speed-dependent 

intermittent wiper system should work 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 combination meter.

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-226

Inspection Procedure G-7: The windshield washer does not work.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The windshield washer motor, the column switch or 
the front-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the windshield washer motor

• Malfunction of the column switch

• Malfunction of the front-ECU

• Damaged harness wires and connectors

Windshield Washer Motor Circuit

FRONT-ECU

WINDSHIELD 
WASHER MOTOR

WINDSHIELD 
WASHER 
RELAY

INPUT SIGNAL

WINDSHIELD WASHER

IGNITION 
SWITCH (ACC)

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       

REAR 
WASHER 
RELAY

ETACS-ECU

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-227

DIAGNOSIS PROCEDURE

Step 1. Check the operation of the windshield 
wipers.
Check that the windshield wipers work normally.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Inspection Procedure G-1 "The 
windshield wipers does not work at all 

P.54B-205

."

Step 2. Pulse check
Check the input signals below which are related to 
the windshield wiper.

OK: The MUT-III sounds or the voltmeter 
needle fluctuates.

Q: Are the check result normal?

All the signals are received normally : 

Go to Step 

3.

The ignition switch (ACC) signal is not received. : 

Refer to inspection procedure Q-1 "The 
ignition switch (ACC) signal is not received 

P.54B-416

."

Windshield washer switch signal is not received. : 

Refer to inspection procedure Q-7 "The 
column switch (windshield wiper washer 
and rear wiper washer switch) signal is not 
received 

P.54B-439

."

Step 3. Connector check: A-34 windshield 
washer motor connector

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the connector.

Step 4. Check the windshield washer motor 
assembly.
Refer to GROUP 51 

− Windshield washer 

P.51-21

.

Q: Is the check result normal?

YES : 

Go to Step 5

NO : 

Replace the windshield washer motor.

System switch

Check condition

Ignition switch 
(ACC)

When turned from the LOCK 
(OFF) position to the ACC 
position.

Windshield 
washer switch

When the switch is turned from 
off to on.

AC310401

Connector: A-34 <LHD>

Harness side

A-34 (GR)

AF

AC310396

Connector: A-34 <RHD>

Harness side

A-34 (GR)

AF

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-228

Step 5. Check the wiring harness between A-34 
windshield washer motor connector terminal 
No.2 and C-220 ETACS-ECU connector terminal 
No.23.

NOTE: 

Prior to the wiring harness inspection, check the 
intermediate connector C-125 and repair if 
necessary.

• Check the earth wires for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the wiring harness.

Step 6. Connector check: A-15X front-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the connector.

AC310401

Connector: A-34 <LHD>

Harness side

A-34 (GR)

AF

AC310396

Connector: A-34 <RHD>

Harness side

A-34 (GR)

AF

AC310626

Connector: C-220 <LHD>

Junction block (Rear view)

AE

Harness side

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AC310620

Connector: C-220 <RHD>

Junction block (Rear view)

AD

Harness side

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AC310613

AD

Connector: C-125 <LHD>

AC310628AB

Connector: C-125 <RHD>

AC311521AC

Connector: A-15X

Relay box side

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