Mitsubishi L200. Manual - part 517

DOOR

BODY

42-128

Inspection Procedure B-2: Driver's Power Window does not Work by means of the Power Window 
Main Switch. <LH drive vehicles>

CAUTION

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

AC900871

Power Window (LH) Circuit

ETACS-ECU

RELAY
BOX

POWER WINDOW
RELAY

FUSIBLE 
LINK

23

CPU

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

HALL IC

HALL IC

POWER 
WINDOW
MAIN SWITCH

POWER WINDOW
MOTOR
(FRONT: LH)

FRONT (LH)

AB

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42-129

COMMENTS ON TROUBLE SYMPTOM
If the driver's door power window does not work by 
means of the power window main switch, the power 
window main switch or the driver's door power win-
dow motor may be defective.

PROBABLE CAUSES 

• Malfunction of the power window main switch

• Malfunction of the power window motor (front:LH)

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III diagnosis code.
When the ignition switch is turned to the "ON" posi-
tion, check that the ETACS-ECU does not set the 
diagnosis code.

Q: Is the diagnosis code set?

YES : 

Refer to 

P.42-64

.

NO : 

Go to Step 2.

STEP 2. Check the power window main switch.
Check that all of the front passenger's power window 
and the rear power windows <Double cab> can oper-
ate by means of the power window main switch.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Refer to 

P.42-186

.

STEP 3. Connector check: Connector check: E-
03 power window main switch connector and E-
18 power window motor (front: LH) connector

AC509952

Connectors: E-03, E-18 <LHD>

AG

Harness side

E-03

E-03

Harness side

E-18 (B)

E-18 (B)

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the connector.

STEP 4. Check the wiring harness between E-03 
power window main switch connector terminal 
Nos. 1, 7 and E-18 power window motor (front: 
LH) connector terminal Nos. 3, 1.

AC509952

Connectors: E-03, E-18 <LHD>

AG

Harness side

E-03

E-03

Harness side

E-18 (B)

E-18 (B)

• Check the input and output lines for open and 

short circuit.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the wiring harness.

STEP 5. Retest the system.
(1) Replace the power window main switch.
(2) Check that the driver's power window works by 

means of the power window main switch.

Q: Is the check result normal?

YES : 

The procedure is complete.

NO : 

Replace the power window motor (front: 
LH).

DOOR

BODY

42-130

Inspection Procedure B-3: Driver's Power Window does not Work by means of the Power Window 
Main Switch. <RH drive vehicles>

CAUTION

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

AC806163

Power Window (RH) Circuit

ETACS-ECU

RELAY
BOX

POWER WINDOW
RELAY

FUSIBLE 
LINK

23

CPU

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

HALL IC

HALL IC

POWER 
WINDOW
MAIN SWITCH

POWER WINDOW
MOTOR
(FRONT: RH)

FRONT (RH)

AC

7

14

DOOR

BODY

42-131

COMMENTS ON TROUBLE SYMPTOM
If the driver's door power window does not work by 
means of the power window main switch, the power 
window main switch or the driver's door power win-
dow motor may be defective.

PROBABLE CAUSES 

• Malfunction of the power window main switch

• Malfunction of the power window motor (front: 

RH)

• Damaged harness wires and connectors