Mitsubishi Montero (2002-2004). Manual — part 272

SYMPTOM PROCEDURES

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SWS SYMPTOM PROCEDURES

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General circuit diagram for the power windows

SYMPTOM PROCEDURES

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SWS SYMPTOM PROCEDURES

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INSPECTION PROCEDURE D-1: Power Window: Power windows do not work at all.

NOTE: This troubleshooting procedure requires the use of scan tool MB991502 and SWS monitor kit
MB991862. For details on how to use the SWS monitor, refer to "How to use SWS monitor

P.54Ba-8

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Power Window Relay Circuit

SYMPTOM PROCEDURES

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SWS SYMPTOM PROCEDURES

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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 in the "ON" position. The power window relay
is located in the under-dash junction block, to the left
of the steering column. It plugs into connector D-219.

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TROUBLESHOOTING HINTS

• The power window relay may be defective

• The ETACS-ECU may be defective

• The wiring harness or connectors may have

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

ACX02274

FUSIBLE LINK (4)

AD

BATTERY

AC000758

CONNECTORS: D-25, D-28

AK

D-25

D-28

ACX02285

CONNECTORS: D-208, D-219, D-221

AG

D-208

D-219

JUNCTION BLOCK (FRONT VIEW)

D-221

POWER WINDOW
RELAY

AC203774

CONNECTOR: H-05

AD

DRIVER'S DOOR

H-05

SYMPTOM PROCEDURES

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SWS SYMPTOM PROCEDURES

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DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991502: Scan Tool (MUT-II)

• MB991862: SWS Monitor Kit

STEP 1. Use scan tool MB991502 to select "ECU COMM
CHK" on the SWS monitor display.
Check the ETACS-ECU.

CAUTION

To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector

(16-pin).

(2) Connect SWS monitor kit MB991862 to the data link

connector (13-pin).

(3) Turn the ignition switch to the "ON" position.
(4) Operate scan tool MB991502 according to the procedure

below to display "ECU COMM CHK."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "ECU COMM CHK."

(5) Scan tool MB991502 should show "OK" on the "ECU

COMM ECU" menu for the ETACS ECU menu.

Q: Is "OK" displayed on the "ETACS ECU" menu?

"OK" is displayed for all the items : Go to Step 2.
"NG" is displayed on the "ETACS ECU" menu : Refer to

Inspection Procedure A-3 "Communication with
ETACS-ECU is not possible

P.54Bb-25

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AC204222AB

16-pin

13-pin

MB991502

MB991862