Mitsubishi L200. Manual - part 514

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PROBABLE CAUSES

• Malfunction of the rear power window sub switch 

(rear: RH)

DIAGNOSIS PROCEDURE

Check whether the diagnosis code is reset.
Check that the diagnosis code is not reset.

Q: Is diagnosis code set?

YES : 

Replace the rear power window sub switch 

(RH).

NO : 

The procedure is complete.

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SYMPTOM PROCEDURES <POWER 
WINDOWS>

Inspection Procedure B-1: Power Windows do not Work at All.

CAUTION

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

AC900864

Power Window Relay Circuit

ETACS-ECU

RELAY
BOX

POWER 
WINDOW 
RELAY

POWER WINDOW MOTOR 
(FRONT: RH)<LHD>
(FRONT: LH)<RHD>

REAR PANEL
POWER 
WINDOW-ECU 

FUSIBLE 
LINK

23

POWER 
WINDOW 
MAIN SWITCH

CPU

· POWER WINDOW
  MOTOR (REAR: RH)
· POWER WINDOW
  MOTOR (REAR: LH)

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

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COMMENTS ON TROUBLE SYMPTOM
If the power windows do not work at all, the power 
window relay, the power window main switch or the 
ETACS-ECU may be defective.

PROBABLE CAUSES

• Malfunction of the power window relay

• Malfunction of the power window main switch

• Malfunction of the ETACS-ECU

• 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.

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STEP 2. M.U.T.-III data list
Check the input signal from the ignition switch (IG1).

•

Item 
No.

Item name

Normal condition

30

Ignition switch (IG1)

ON

Ignition switch: ON

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Refer to GROUP 54A, Inspection Procedure 
C-3 "The ignition switch (IG1) signal is not 
received ."

STEP 3. Connector check: A-24X power window 
relay connector

AC600252

AG

Connector: A-24X

Relay box side

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Repair the connector.

STEP 4. Check the power window relay.
Refer to 

P.42-171

.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Replace the power window relay.

STEP 5. Voltage measurement at the A-24X 
power window relay connector.

AC600252

AG

Connector: A-24X

Relay box side

(1) Disconnect the relay, and measure at the relay 

box side.

(2) Turn the ignition switch to the ON position.

AC310507GO

Connector A-24X 
(Relay box side)

(3) Check the voltage between the A-24X power 

window relay connector terminal No.4 and body 
earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Go to Step 6.