Mitsubishi 380. Manual — part 38

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-149

POWER WINDOW MAIN SWITCH FUNCTION

The main switch is located on the driver’s door.
Raises the driver’s power window

When the driver’s power window switch on the power window
main switch is pulled up, the system energizes its respective
power window motor, and then the driver’s window glass rises.

Lowers the driver’s power window

When the driver’s power window switch on the power window
main switch is pushed down, the system energizes its respec-
tive power window motor, and then the driver’s window glass
lowers.

Lowers the driver’s power window by one-touch down
function

When the driver’s power window switch on the power window
main switch is pushed down fully, the system energizes its
respective power window motor, and then the driver’s window
glass moves to its lowest position.

Raises the passenger’s power window

When the passenger’s power window switch on the power win-
dow main switch is pulled up, the system energizes its respec-
tive power window motor, and then the passenger’s window
glass rises.

AC106705

ON

OFF

ON

OFF

UPPER SIDE

POWER

WINDOW

MOTOR

POWER

WINDOW

MAIN

SWITCH

DRIVER'S

POWER WINDOW

SWITCH UPPER

SIDE

AH

AC106705

LOWER SIDE

POWER

WINDOW

MOTOR

POWER

WINDOW

MAIN

SWITCH

DRIVER'S

POWER WINDOW

SWITCH LOWER

SIDE

ON

OFF

ON

OFF

AI

AC106706

ON

OFF

ON

OFF

LOWER SIDE

POWER

WINDOW

MOTOR

POWER

WINDOW

MAIN

SWITCH

DRIVER'S

POWER

WINDOW

SWITCH

LOWER SIDE

AC

AC106705

UPPER SIDE

POWER

WINDOW

MOTOR

POWER

WINDOW

MAIN

SWITCH

ON

OFF

ON

OFF

PASSENGER'S

POWER WINDOW

SWITCH UPPER

SIDE

AJ

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-150

Lowers the passenger’s power window

When the passenger’s power window switch on the power win-
dow main switch is pushed down, the system energizes its
respective power window motor, and then the passenger’s win-
dow glass lowers.

POWER WINDOW SUB SWITCH FUNCTION

The sub switches are located on the passenger’s doors.
Raises the passenger’s power window

When the power window sub switch is pulled up, the system
energizes its respective power window motor, and then the
passenger’s window glass rises.

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 the
passenger’s window glass lowers.

Power window timer function

Even after the ignition is switched off, the ETACS-ECU keeps
the power window relay activated for approximately 30 sec-
onds, enabling raising and lowering of the power windows by
using the power window switches. After approximately 30 sec-
onds, the power window relay is deactivated.
During this timed operation, if the driver or passenger doors are
opened, the power window relay is deactivated from that
moment.

AC106705

LOWER SIDE

POWER

WINDOW

MOTOR

POWER

WINDOW

MAIN

SWITCH

ON

OFF

ON

OFF

AK

PASSENGER'S

POWER WINDOW

SWITCH LOWER

SIDE

AC106705

ON

OFF

ON

OFF

UPPER SIDE

POWER

WINDOW

MOTOR

PASSENGER'S

POWER

WINDOW

SUB SWITCH

UPPER SIDE

AL

AC106705

LOWER SIDE

POWER

WINDOW

MOTOR

PASSENGER'S

POWER

WINDOW

SUB SWITCH

LOWER SIDE

ON

OFF

ON

OFF

AM

AC200337AC

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

SIMPLIFIED WIRING SYSTEM (SWS)

54B-151

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

NOTE: This troubleshooting procedure requires use
of diagnostic tool MB991958 and SWS monitor kit
MB991813. For details on how to use the SWS mon-
itor, refer to "How to connect SWS monitor

P.54B-13

."

.

CIRCUIT OPERATION

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

.

TROUBLESHOOTING HINTS

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

• The wiring harness or connectors may have

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

• The power window relay may be defective

• The power window main switch may be defective

• The ETACS-ECU may be defective

AC305015

FUSIBLE LINK No.5

AI

16DB310A

CONNECTOR: C-12

16DB327A

CONNECTOR: C-219

JUNCTION BLOCK

(REAR VIEW)

16DB332A

3

9

4

12

14

6

13

5

1110

8

2

7

1

HARNESS SIDE

CONNECTOR:E-04

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-152

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: diagnostic tool (MUT-III Sub Assembly)

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

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A

• MB991813: SWS Monitor Kit

• MB991806: SWS Monitor Cartridge

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

• MB991822: Test Probe Harness

STEP 1. Use diagnostic tool MB991958 to select "ECU
COMM Check" on the SWS monitor display.
Check the ETACS-ECU.

CAUTION

To prevent damage to diagnostic tool MB991958, always
turn the ignition switch to the "LOCK" (OFF) position
before connecting or disconnecting diagnostic tool
MB991958. Connect special tool MB991910 before con-
necting special tool MB991812. Be sure to connect special
tool MB991806 after turning on special tool MB991824.
(1) Connect the special tool. Refer to "How to connect SWS

monitor

P.54B-13

."

(2) Turn the ignition switch to the "ON" position.
(3) Operate the diagnostic tool MB991958 according to the

procedure below to display "ECU COMM Check."
a. Select "Interactive Diagnosis."
b. Select "System Select."
c. Select "SWS."
d. Select "SWS MONITOR."
e. Select "ECU COMM Check."

(4) diagnostic tool MB991958 should show "OK" on the "ECU

COMM Check" menu for the "ETACS ECU" menu.

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

YES : Go to Step 2.
NO : Refer to Inspection Procedure A-3 "Communication

with the ETACS-ECU is not possible

P.54B-74

."

00DB076A

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

COLUMN SWITCH
CONNECTOR

COLUMN SWITCH
CONNECTOR AT
HARNESS SIDE

MB991812