Mitsubishi L200. Manual - part 518

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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-
01 power window motor (front: RH) connector

AC509954

Connectors: E-01, E-03 <RHD>

AG

Harness side

E-03

E-03

Harness side

E-01 (B)

E-01 (B)

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the connector.

STEP 4. Check the wiring harness from E-03 
power window main switch connector terminal 
Nos. 1, 7 and E-01 power window motor (front: 
RH) connector terminal Nos. 3, 1.

AC509954

Connectors: E-01, E-03 <RHD>

AG

Harness side

E-03

E-03

Harness side

E-01 (B)

E-01 (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: 
RH).

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Inspection Procedure B-4: Relevant Power Window(s) do not Work by means of the Front 
Passenger's Power Window Sub Switch and Rear Power Window Sub Switches. <LH drive vehicles>

CAUTION

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

CPU

IC

IC

AC806165

Power Window Sub Switch Circuit

ETACS-ECU

RELAY
BOX

POWER WINDOW
RELAY

FUSIBLE 
LINK

23

POWER WINDOW
SUB SWITCH
(FRONT: RH)

POWER WINDOW
MOTOR
(FRONT: RH)

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

AB

AC900873AB

HALL IC

HALL IC

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AC903704

Power Window Sub Switch Circuit <Double Cab>

RELAY
BOX

POWER WINDOW
RELAY

FUSIBLE
LINK

23

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

POWER
WINDOW
SUB 
SWITCH
(REAR: LH)

POWER
WINDOW
MOTOR
(REAR: LH)

POWER
WINDOW
MOTOR
(REAR: RH)

CPU

HALL IC

HALL IC

CPU

POWER
WINDOW
SUB 
SWITCH
(REAR: RH)

ETACS-ECU

AB

18  C-16

HALL IC

HALL IC

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COMMENTS ON TROUBLE SYMPTOM
If the front passenger's or rear power window <Dou-
ble cab> does not work by means of the respective 
power window sub switch, the power window sub 
switch or the power window motor may be defective.

PROBABLE CAUSES

• Malfunction of the power window sub switch 

(front: RH), power window sub switch (rear: RH) 
or power window sub switch (rear: LH)