Mitsubishi Outlander GS45X. Manual - part 1072

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SYMPTOM PROCEDURES <POWER WINDOW>

INSPECTION PROCEDURE C-1: Power Windows do not Work at All.

CAUTION

Before replacing the ECU, ensure that the power supply circuit, the ground circuit and the communi-
cation circuit are normal.

ACA02651

ETACS-ECU

POWER
WINDOW
RELAY

FUSIBLE 
LINK

34

FUSIBLE 
LINK

36

ENGINE 
COMPARTMENT

RELAY BOX

POWER WINDOW MAIN SWITCH, FRONT POWER WINDOW 
SUB SWITCH AND REAR POWER WINDOW SUB SWITCH

AB

Power Window Power Supply Circuit

POWER WINDOW 
MAIN SWITCH

CPU

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.

CIRCUIT OPERATION

The ETACS-ECU turns on the power window relay to 
activate the power windows when the ignition switch 
(IG1) is turned to the "ON" position.

.

TROUBLESHOOTING HINTS

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

• The power main switch may be defective

• The ETACS-ECU may be defective

DIAGNOSTIC PROCEDURE

Required Special Tools:

• MB992006: Extra fine probe

• MB991223: Harness set

• MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: Vehicles Communication Interface (V.C.I.)

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A (Vehicles with 

CAN communication system)

STEP 1. Check the power supply system.
With the ignition switch in the LOCK (OFF) position, check if 
the following function operates normally:

• Hazard warning light

• Central door locking system

Q: Is the check result normal?

YES : Go to Step 2.
NO :  Refer to GROUP 54A, Malfunction of ETACS-ECU 

power supply circuit 

P.54A-782

.

AC701918 AH

C-126

Connector: C-126

ACA01378

AU

Connectors: C-307, C-309, C-315

C-307 (B)

C-309 (B)

ETACS-ECU

C-315

AC702763

Connector: E-19

AE

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STEP 2. Using scan tool MB991958, read the diagnostic 
trouble code.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to GROUP 42B, "How 

to connect scan tool (M.U.T.-III) 

P.42B-13

."

(2) Turn the ignition switch to the "ON" position.
(3) Check whether the ETACS-ECU related DTC is set.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the DTC set?

YES : Diagnose the ETACS-ECU. Refer to GROUP 54A, 

Diagnosis 

P.54A-732

.

NO :  Go to Step 3.

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector

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STEP 3. Using scan tool MB991958, check data list.
Check the signals related to the power window operation.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958. Refer to GROUP 42B, "How 

to connect scan tool (M.U.T.-III) 

P.42B-13

."

(2) Turn the ignition switch to the "ON" position.
(3) Check the data list of the ETACS.

• Turn the ignition switch to the LOCK (OFF) position.

(4) Turn the ignition switch to the "LOCK" (OFF) position.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : Go to Step 4.
NO :  Refer to GROUP 54A, Inspection Procedure 2: 

ETACS-ECU does not receive any signal from the 
ignition switch (IG1) 

P.54A-788

.

STEP 4. Check ETACS-ECU connector C-309 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is ETACS-ECU connector C-309 in good condition?

YES : Go to Step 5.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that the power window works 

normally.

Item No.

Item name

Normal 
condition

254

IG voltage

Battery 
positive 
voltage 

ZC501967

AC404789

AC701411AB

MB991824

MB991827

MB991910

Data link 
connector