Mitsubishi Galant. Manual — part 576

SUNROOF

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BODY

42-87

STEP 3. Check the harness wires between sunroof-ECU
connector D-03and ground.
Q: Are there any damaged wires between sunroof-ECU

connector D-03 and ground?
YES : Repair them, then go to Step 4.
NO : Replace the sunroof-ECU. Then go to Step 4.

STEP 4. Check symptoms

Q: Are the intermediate connectors, harness wires, and

sunroof-ECU normal?
YES : This diagnosis is complete.
NO : Return to Step 1.

CHECKING AT THE SUNROOF-ECU

M1426002400026

TERMINAL VOLTAGE CHART

AC000623AB

CONNECTOR: D-03

5

4

6

13

3

2

1

14

12

11

10

9

8

7

15 16 1718

AC004260

Sunroof-ECU Connector Terminal Arrangement

AB

TERMINAL NO.

CHECK ITEM

CHECK STATE

NORMAL STATE

1Sensor power supply Ignition switch: ON

Battery positive voltage

2

Sensor 1When motor is operating

Battery positive voltage
(pulse)

3

Sunroof switch
(open) input

Sunroof switch (open po-
sition)

ON

0V

OFF

Battery positive voltage

4

Sunroof switch (up)
input

Sunroof switch (up posi-
tion)

ON

0V

OFF

Battery positive voltage

6

ECU power supply

Ignition switch: ON

Battery positive voltage

7

ECU power supply

Always

Battery positive voltage

8

Motor output

While sunroof is closing or moving up

Battery positive voltage

Other then the above

0V

9

Sensor earth

Always

0V

10

Sensor 2

When motor is operating

Battery positive voltage
(pulse)

SUNROOF

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SPECIAL TOOL

M1426000600068

ON-VEHICLE SERVICE

WATER TEST

M1426000900070

1. Close the roof lid tightly.
2. Hold hose upward and adjust the fountain of water to

approximately 50 cm (19.7 inches) high.

12

Sunroof switch
(close or down) input

Sunroof switch (close po-
sition or down position)

ON

0V

OFF

Battery positive voltage

14

Limit switch input

From tilt up condition to fully-close
condition

Battery positive voltage

From fully-closed condition to fully-
open condition

0V

17

Earth

Always

0V

18

Motor output

While sunroof is opening or moving
down

Battery positive voltage

Other then the above

0V

TERMINAL NO.

CHECK ITEM

CHECK STATE

NORMAL STATE

TOOL

TOOL NUMBER AND
NAME

REPLACED BY
MILLER TOOL
NUMBER

APPLICATION

MB991223 Harness set

•

A: MB991219
Test harness

•

B: MB991220
LED harness

•

C: MB991221
LED harness adapter

•

D: MB991222
Probe

MB991223

Measurement of terminal voltage

•

A: Connector pin contact
pressure inspection

•

B: Power circuit inspection

•

C: Power circuit inspection

•

D: Commercial tester connection

MB991223

A

D

C

B

AD

AC000640AB

APPROXIMATERY

50 cm (19.7 in)

HOSE

SUNROOF

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3. Pour water over the roof from approximately 30 cm (11.8

inches) above roof for more than 5 minutes.

4. Check if any water leaks can be found in the room while

watering.Even though there are any water leaks around the
roof lid glass, it can be acceptable as long as water is caught
in the drip area.

5. In the event of leakage, check the drain pipe, weatherstrip

contact and others.

SUNROOF FIT ADJUSTMENT

M1426001000070

1. Fully close the roof lid glass.

2. Fully open the sunshade.
3. Loosen the roof lid glass assembly mounting screws (four),

and then slide the roof lid glass assembly along the slot in
the drive cable assembly to adjust the height of the roof lid
glass. Check that an even clearance exists around the roof
lid glass end and body.

4. After adjustment, check to be sure that the sunroof operates

smoothly.

SUNROOF OPERATION CHECK

M1426002600086

Check that the following items. If faulty, replace the sunroof-ECU.

CAUTION

Check that the following items are normal before carrying out this operation check.

1. Installation condition of the sunroof assembly

2. Installation condition, deforms and foreign material of the sunroof drive cable

3. Unfitted sunroof lid glass

4. Sunroof switch and sunroof motor assembly

ACX00572AB

HOSE

APPROX
30 cm (11.8 in)

AC000641

NO. SUNROOF INITIAL POSITION

SWITCH OPERATION

JUDGMENT (NORMAL)

01Fully closed

Ignition switch: "ON"

•

Sunroof switch: OPEN

The sunroof automatically
opens.

02

Fully open

Ignition switch: "ON"

•

Sunroof switch: CLOSE

The sunroof closes while the
sunroof switch is pushed to the
CLOSE position. Approximately
5 to 10 mm (0.2 to 0.4 in) before
completely closed the sunroof
will close automatically.

03

Fully closed (tilt down)

Ignition switch: "ON"

•

Sunroof switch: TILT UP

The sunroof will automatically tilt
up.

SUNROOF

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04

Tilt up

Ignition switch: "ON"

•

Sunroof switch: TILT DOWN

The sunroof closes while the
sunroof switch is pushed to the
TILT DOWN position. The
sunroof automatically will be
moved approximately 5 to 10
mm (0.2 to 0.4 in) toward the
open side from the completely
closed position, and then closes
completely.

05

Fully closed or while opening

Ignition switch: "ON"

1. Sunroof switch: OPEN
2. Sunroof switch: CLOSE (The

sunroof switch is pushed to
the CLOSE position while the
sunroof is automatically
opening. The time of pushing:
Within two seconds)

The sunroof stops the automatic
open operation.

06

Fully closed or while opening

Ignition switch: "ON"

1. Sunroof switch: OPEN
2. Sunroof switch: CLOSE (The

sunroof switch is pushed to
the CLOSE position while the
sunroof is automatically
opening. The time of pushing:
More than two seconds)

The sunroof stops the automatic
open operation, and the sunroof
close while the sunroof switch is
pushed to the CLOSE position.

07

Fully closed or while opening

Ignition switch: "ON"

1. Sunroof switch: OPEN
2. Sunroof switch: CLOSE (The

sunroof switch is pushed to
the OPEN position again
while the sunroof is
automatically opening.)

The sunroof continue the
automatic open operation.

08

Fully closed (tilt down)

Ignition switch: "ON"

1. Sunroof switch: TILT UP
2. Sunroof switch: OPEN,

CLOSE TILT UP, or TILT
DOWN (Each direction switch
of the sunroof switch is
pushed while the sunroof is
conducting the automatic tilt
up operation.)

The sunroof will continue
automatic operation until tilted
up.

09

While closed or opening

Ignition switch: "ON"

1. Sunroof switch: OPEN.
2. Sunroof switch: TILT UP (The

sunroof switch is pushed to
the TILT UP position during
sunroof automatic open
opertion.)

The sunroof will stop the
automatic operation.

NO. SUNROOF INITIAL POSITION

SWITCH OPERATION

JUDGMENT (NORMAL)