Mitsubishi Montero (2002-2004). Manual - part 275

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-147

STEP 13. Check power window relay connector D-219 and 
ETACS-ECU connector D-222 for damage.
Q: Are power window relay connector D-219 and ETACS-

ECU connector D-222 in good condition?
YES : Go to Step 14.
NO :  Repair or replace the connector. Refer to GROUP 

00E, Harness Connector Inspection 

P.00E-2

. Verify 

that the power windows function should now work 
normally.

STEP 14. Check the wiring harness between power 
window relay connector D-219 (terminal 1) and ETACS-
ECU connector D-222 (terminal 8).
Q: Is the wiring harness between power window relay 

connector D-219 (terminal 1) and ETACS-ECU connector 
D-222 (terminal 8) in good condition?
YES : Replace the ETACS-ECU. Verify that the power 

windows function should now work normally.

NO :  The wiring harness may be damaged or the 

connector(s) may have loose, corroded or damaged 
terminals, or terminals pushed back in the connector. 
Repair the wiring harness as necessary. Verify that 
the power windows function should now work 
normally.

AC203850AC

CONNECTOR: D-219

JUNCTION BLOCK 
(FRONT VIEW)

D-219

4

5

1 2 3

D-219

AC203853

CONNECTOR: D-222

AB

JUNCTION BLOCK (REAR VIEW)

D-222

AC203850AC

CONNECTOR: D-219

JUNCTION BLOCK 
(FRONT VIEW)

D-219

4

5

1 2 3

D-219

AC203853

CONNECTOR: D-222

AC

JUNCTION BLOCK (REAR VIEW)

D-222

(HARNESS SIDE)

SYMPTOM PROCEDURES

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SWS SYMPTOM PROCEDURES

54Bb-148

INSPECTION PROCEDURE D-2: Power Window: The power window timer does not work normally.

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

P.54Ba-8

."

.

CIRCUIT OPERATION
The ETACS-ECU activates the power window timer 
function with input signals from the followings:

• Ignition switch (IG1)

• Front door switch

.

TECHNICAL DESCRIPTION (COMMENT)
If the power window timer function does not work 
normally, the circuit inputs, the ETACS-ECU or the 
front-ECU may be defective.

.

TROUBLESHOOTING HINTS

• The front door switches 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

Power Window Timer Function Circuit 

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-149

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

."

AC200084AB

DATA LINK
CONNECTOR
(13-pin)

DATA LINK
CONNECTOR
(16-pin)

MB991502

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-150

STEP 2. Check the input signal by using "DATA LIST" 
menu of the SWS monitor.
(1) Check the input signals from the following switches:

• Ignition switch: ON to OFF

• Driver’s and front passenger’s doors: closed

(2) Operate scan tool MB991502 according to the procedure 

below to display "ETACS ECU."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "DATA LIST."
5. Select "ETACS ECU."

(3) Check that normal conditions are displayed on the items 

described in the table below.

Q: Does the scan tool display the items "IG SW (IG1)" and 

"FRONT DOOR SW" as normal condition?
YES : Replace the ETACS-ECU. Verify that the power 

window timer should now works normally.

NO : 

• The scan tool does not show the respective 

normal condition for item "IG SW (IG1)." Refer to 
Inspection Procedure O-2 "ETACS-ECU does not 
receive a signal from the ignition switch (IG1) 

P.54Bc-7

."

• The scan tool does not show the respective 

normal condition for item "FRONT DOOR SW." 
Refer to Inspection Procedure O-5 "ETACS-ECU 
does not receive any signal from the driver’s or 
front passenger’s door switch

P.54Bc-23

."

ITEM NO.

ITEM NAME

NORMAL 
CONDITION

ITEM 30

IG SW (IG1)

OFF

ITEM 32

FRONT DOOR 
SW

OFF

AC200084AB

DATA LINK
CONNECTOR
(13-pin)

DATA LINK
CONNECTOR
(16-pin)

MB991502