Mitsubishi Montero (2004+). Manual - part 722

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-145

Lowers the passenger’s power window
When the power window sub switch is pushed down, the sys-
tem energizes its respective power window motor, and then 
passenger’s window glass lowers.

Power window timer function
When the ignition switch is turned to the "ON" position, the 
power window relay is turned ON. After the ignition switch is 
turned OFF, the system continues to turn ON the power window 
relay for about 30 seconds and to enable the opening and clos-
ing of the door window by the power window switch. When the 
driver's or front passenger’s door is opened while the timer is in 
operation, the power window relay will be turned OFF.

AC106705

LOWER SIDE

 

POWER
WINDOW
MOTOR

PASSENGER'S
POWER 
WINDOW
SUB SWITCH

LOWER SIDE

ON

OFF

ON

OFF

AM

AC200337 AC

ON

OFF

ON

OFF

ON 

(Open)

OFF 

(Closed)

IGNITION SWITCH (IG1)

POWER WINDOW 
RELAY

DRIVER'S OR FRONT 
PASSENGER'S
SEAT DOOR
SWITCH

t

t: 30 seconds

t

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-146

General circuit diagram for the power windows

IGNITION
SWITCH (IG1)

DATA LINK
CONNECTOR

FRONT
DOOR
SWITCH
(RH)

FRONT
DOOR
SWITCH
(LH)

ETACS-
ECU

POWER
WINDOW
RELAY

POWER 
WINDOW
SUB 
SWITCH

(FRONT: RH)

POWER WINDOW
MOTOR 

(FRONT: RH)

POWER  WINDOW
MOTOR 

(FRONT: LH)

POWER WINDOW
MOTOR 

(REAR: LH)

POWER  WINDOW
MOTOR 

(REAR: RH)

POWER 
WINDOW
SUB 
SWITCH

(REAR: LH)

POWER 
WINDOW
SUB 
SWITCH

(REAR: RH)

POWER WINDOW MAIN SWITCH

FRONT (LH)

FRONT (RH)

REAR (LH)

REAR (RH)

CIRCUIT
BREAKER

CIRCUIT
BREAKER

CIRCUIT
BREAKER

CIRCUIT
BREAKER

JUNCTION BLOCK

FUSIBLE
LINK

2

FUSIBLE
LINK

4

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-147

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

NOTE: This troubleshooting procedure requires the 
use of scan tool MB991958 and SWS monitor kit 
MB991862. For details on how to use the SWS mon-
itor, refer to "How to use SWS monitor 

P.54B-10

."

Power Window Relay Circuit

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-148

.

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. 

.

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

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: Scan Tool (MUT-III Sub Assembly)

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

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

• MB991813: SWS Monitor Kit

• MB991806: SWS Monitor Cartridge

• MB991812: SWS Monitor Harness (For Column-ECU)

• MB991822: Probe Harness

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