Mitsubishi L200. Manual - part 556

WINDSHIELD WIPER AND WASHER

EXTERIOR

51-40

STEP 10. Connector check: C-219 ETACS-ECU 
connector, C-302 column switch connector

AC509934

Connector: C-219 <LHD>

AD

C-219 (GR)

Harness side

Junction block

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
 (Rear view)

AC903858 AJ

Harness side

Connector: C-302 <LHD>

AC903869AJ

Harness side

Connector: C-302 <RHD>

Q: Is the check result normal?

YES : 

Go to Step 11.

NO : 

Repair the connector.

STEP 11. Check the wiring harness between C-
302 column switch connector terminal No.8 and 
C-219 ETACS-ECU connector terminal No.64.

AC903858 AJ

Harness side

Connector: C-302 <LHD>

AC903869AJ

Harness side

Connector: C-302 <RHD>

AC509934

Connector: C-219 <LHD>

AD

C-219 (GR)

Harness side

Junction block

AC509943

Connector: C-219 <RHD>

AB

C-219 (GR)

Harness side

Junction block
 (Rear view)

• Check the wiper backup circuit.

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Repair the wiring harness.

WINDSHIELD WIPER AND WASHER

EXTERIOR

51-41

STEP 12. Retest the system.
The windshield wiper should now work normally at 
all.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00, How to 
use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction ).

NO : 

Replace the ETACS-ECU and register the 
ID codes.

Inspection Procedure 2: The Windshield Wipers do not Work Normally.

CAUTION

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

AC903744

Windshield Wiper Motor Drive Circuit

ETACS-ECU

CIRCUIT
BREAKER

WIPER SPEED
SWITCHING
RELAY

WINDSHIELD
WIPER MOTOR

INPUT SIGNAL

· WINDSHIELD WIPER HI SPEED SWITCH
· WINDSHIELD WIPER INTERMIT SWITCH
· WINDSHIELD WIPER LO SPEED SWITCH
· WINDSHIELD WIPER MIST SWITCH

J/B SIDE

Wire colour code 
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue 
BR : Brown     O : Orange     GR : Grey     R : Red     P : Pink     V : Violet     PU : Purple     SI : Silver

AB

COMMENTS ON TROUBLE SYMPTOM
The windshield wiper motor, the column switch or the 
ETACS-ECU may be defective.

PROBABLE CAUSES

• Malfunction of the windshield wiper motor

• Malfunction of the column switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

WINDSHIELD WIPER AND WASHER

EXTERIOR

51-42

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code.
When the ignition switch is turned to the "LOCK" 
(OFF) position, check that the ETACS-ECU does not 
set the diagnosis code.

Q: Is the diagnosis code set?

YES : 

Refer to GROUP 54A, Diagnosis Code 

Chart .

NO : 

Go to Step 2.

STEP 2. M.U.T.-III data list
Check the input signals below which are related to 
the windshield wiper.
(1) Turn the ignition switch to the "ON" position.
(2) Operate the windshield wiper switch.

Item 
No.

Item name

Normal condition

65

Front wiper output

Turns ON when each 
switch is operated.

66

Front wiper HI output

OK: Normal conditions are displayed for 
all the functions of the switch.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Refer to GROUP 54A, Inspection Procedure 
C-1 "The column switch (lighting and wiper 
switch) signal is not received ."

STEP 3. Connector check: A-05 windshield wiper 
motor connector

AC903897

AJ

Connector: A-05 <LHD>

Harness side

A-05 (GR)

AC903889

AC

Connector: A-05 <RHD>

Harness side

A-05 (GR)

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the defective connector.

STEP 4. Check the windshield wiper motor 
assembly.
Refer to 

P.51-71

.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Replace the windshield wiper motor 
assembly.

STEP 5. Retest the system.
Check that the windshield wipers work normally by 
moving the switch to HI or MIST position.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Go to Step 10.

WINDSHIELD WIPER AND WASHER

EXTERIOR

51-43

STEP 6. Connector check: C-218 ETACS-ECU 
connector

AC509934

Connector: C-218 <LHD>

AJ

Junction 

block

Junction block side

AC509943

Connector: C-218 <RHD>

AC

Junction block

 (Rear view)

Junction block side

Q: Is the check result normal?

YES <LH drive vehicles> : 

Go to Step 7.

YES <RH drive vehicles> : 

Go to Step 8.

NO : 

Repair the defective connector.