Mitsubishi 380. Manual — part 42

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-165

DIAGNOSIS

Required Special Tool:

• MB991223: Harness Set

STEP 1. Check power window main switch connector E-04
and front power window regulator motor (RH) connector
E-03 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.
Q: Are power window main switch connector E-04 and

front power window regulator motor (RH) connector
E-03 in good condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. When the power window main switch is

operated, the front power window (RH) should lower
or raise normally.

STEP 2. Check the power window main switch.
(1) Remove the power window main switch. Refer to GROUP

42, Door, Door Glass and Regulator

P.42-39

.

(2) Check continuity while power window main switch is moved

to "UP" and "DOWN" position.

Q: Is the power window main switch normal?

YES : Go to Step 3.
NO : Replace the power window main switch. When the

power window main switch is operated, the front
power window (RH) should lower or raise normally.

16DB337A

CONNECTORS:E-04,E-03

3

9

4

12

14

6

13

5

1110

8

2

7

1

HARNESS SIDE

E-04

E-03

E-04

E-03(GR)

HARNESS SIDE

FRONT (RH)
SWITCH
POSITION

TESTER
CONNECTION

SPECIFIED
CONDITION

UP

12

− 10, 14 − 2

Less than 2 ohms

OFF

12

− 14, 12 − 2,

14

− 2

DOWN

12

− 2, 14 − 10

16DB338A

12

7

1

8

2

10

9

3

11

13

5

4

14

6

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-166

STEP 3. Check the front power window regulator motor
(RH).
(1) Remove the front power window regulator motor (RH).

Refer to GROUP 42, Door, Door Glass and Regulator

P.42-39

.

(2) Connect a battery to the motor terminal, and check that the

motor runs freely.

Q: Is the front power window regulator motor (RH) normal?

YES : Go to Step 4.
NO : Replace the front power window regulator motor

(RH). When the power window main switch is
operated, the front power window (RH) should lower
or raise normally.

STEP 4. Check the wiring harness between power window
main switch connector E-04 (terminals 12 and 14) and front
power window regulator motor (RH) connector E-03
(terminals 2 and 1).
Q: Is the wiring harness between power window main

switch connector E-04 (terminals 12 and 14) and front
power window regulator motor (RH) connector E-03
(terminals 2 and 1) in good condition?
YES : No action is necessary and testing is complete.
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. When the
power window main switch is operated, the front
power window (RH) should lower or raise normally.

BATTERY CONNECTION

SLIDER POSITION

• Connect terminal 1 to the

negative battery terminal

• Connect terminal 2 to the

positive battery terminal

UP

• Connect terminal 2 to the

negative battery terminal

• Connect terminal 1 to the

positive battery terminal

DOWN

1 2

AC204901AB

16DB337A

CONNECTORS:E-04,E-03

3

9

4

12

14

6

13

5

1110

8

2

7

1

HARNESS SIDE

E-04

E-03

E-04

E-03(GR)

HARNESS SIDE

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-167

INSPECTION PROCEDURE D-4: Power Window: Power windows do not work normally by operating
the front passenger's or rear passenger's sub switches.

.

16DB339A

C-26

C-13

CONNECTORS: C-26,C-13

16DB340A

CONNECTORS: C-12,C-28

C-12

C-28

16DB342A

E-12

E-13 (GR)

E-17

E-16 (GR)

CONNECTORS: E-13, E-12, E-17, E-16

16DB343A

E-04

E-06

E-07

CONNECTORS: E-04, E-07, E-06

AC400532

AB

CONNECTOR: D-19

AC400530

CONNECTOR: D-36

AC

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-168

CIRCUIT OPERATION

power window regulator motors raise and lower the
door windows when the front passenger's or rear
passenger's sub switch is moved to "UP" or "DOWN"
position.

.

TECHNICAL DESCRIPTION (COMMENT)

A power window sub switch or power window regula-
tor motor may be defective. Or, the power window
lock switch (incorporated in the power window main
switch in the driver’s door) may remain pressed in
the "LOCK" position.

.

TROUBLESHOOTING HINTS

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

• The power window main switch may be defective

• The front power window sub switch may be

defective

• The rear power window sub switches may be

defective

• The front power window regulator motor (RH)

may be defective

• The rear power window regulator motors 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 Tool:

• MB991223: Harness Set

STEP 1. Check power window main switch connector E-04
for loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is power window main switch connector E-04 in good

condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. When the front power window sub switch

(LH) is operated, the front power window (LH) should
raise and lower normally.

16DB332A

3

9

4

12

14

6

13

5

1110

8

2

7

1

HARNESS SIDE

CONNECTOR:E-04