Mitsubishi Galant (2004+). Manual — part 266

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-255

STEP 9. Check the sunroof switch.

(1) Remove the sunroof switch. Refer to GROUP 42, Sunroof

Assembly

P.42-82

.

(2) Check continuity when the sunroof switch is operated to

"OPEN", "TILT UP" or "CLOSE/TILT DOWN" positions.

Q: Does the check meet the specified conditions?

YES : Go to Step 10.
NO : Replace the sunroof switch. Check that the sunroof

works normally.

STEP 10. Check the ground circuit to the sunroof switch.
Measure the resistance at sunroof switch connector
D-03-1.

(1) Disconnect sunroof switch connector D-03-1 and measure

the resistance available at the wiring harness side of the

connector.

(2) Measure the resistance between terminal 4 and ground.

• The resistance should be 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 14.
NO : Go to Step 11.

SWITCH
POSITION

TESTER
CONNECTION

SPECIFIED
CONDITION

OPEN

4

− 5

Less than 2 ohms

OFF

3

− 4, 3 − 5, 3 − 6,

4

− 5, 4 − 6, 5 − 6

Open circuit

TILT UP

3

− 4

Less than 2 ohms

CLOSE/TILT-DO
WN

4

− 6

Less than 2 ohms

AC306720

AC307038

AC209094

AB

OPEN

OVERHEAD CONSOLE

CLOSE/
TILT-DOWN

TILT-UP

SUNROOF SWITCH

AC307976

OVERHEAD CONSOLE
ASSEMBLY

CONNECTOR: D-03-1

HARNESS SIDE

AB

6

4

5

3 2 1

AC209364HH

CONNECTOR D-03-1
(HARNESS SIDE)

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-256

STEP 11. Check overhead console assembly connector
D-03 for loose, corroded or damaged terminals, or
terminals pushed back in the connector.

Q: Is overhead console assembly connector D-03 in good

condition?
YES : Go to Step 12.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. Check that the sunroof works normally.

STEP 12. Check the wiring harness between sunroof
switch connector D-03-1 (terminal 4) and overhead
console assembly connector D-03 (terminal 6).

Q: Is the wiring harness between sunroof switch connector

D-03-1 (terminal 4) and overhead console assembly
connector D-03 (terminal 6) in good condition?
YES : Go to Step 13.
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. Check that
the sunroof works normally.

STEP 13. Check the wiring harness between overhead
console assembly connector D-03 (terminal 6) and ground.

Q: Is the wiring harness between overhead console

assembly connector D-03 (terminal 6) and ground 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. Check that
the sunroof works normally.

AC305264

AC305264

AL

CONNECTOR: D-03

HARNESS SIDE

AC305264

AC305264

AL

CONNECTOR: D-03

HARNESS SIDE

AC307976

OVERHEAD CONSOLE
ASSEMBLY

CONNECTOR: D-03-1

HARNESS SIDE

AB

6

4

5

3 2 1

AC305264

AC305264

AL

CONNECTOR: D-03

HARNESS SIDE

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-257

STEP 14. Check the wiring harness between sunroof
switch connector D-03-1 (terminals 3, 5 and 6) and
overhead console assembly connector D-03 (terminals 7, 5
and 4).

Q: Is the wiring harness between sunroof switch connector

D-03-1 (terminals 3, 5 and 6) and overhead console
assembly connector D-03 (terminals 7, 5 and 4) in good
condition?
YES : Go to Step 15.
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. Check that
the sunroof works normally.

STEP 15. Check the wiring harness between sunroof motor
assembly connector D-04 (terminals 6, 7 and 8) and
overhead console assembly connector D-03 (terminals 4, 7
and 5).

Q: Is the wiring harness between sunroof motor assembly

connector D-04 (terminals 6, 7 and 8) and overhead
console assembly connector D-03 (terminals 4, 7 and 5)
in good condition?
YES : Go to Step 16.
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. Check that
the sunroof works normally.

AC305264

AC305264

AL

CONNECTOR: D-03

HARNESS SIDE

AC307976

OVERHEAD CONSOLE
ASSEMBLY

CONNECTOR: D-03-1

HARNESS SIDE

AB

6

4

5

3 2 1

AC305265

AC

CONNECTORS: D-03, D-04

D-03

D-03

D-04

HARNESS SIDE

D-04

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-258

STEP 16. Replace the sunroof switch.
(1) Replace the sunroof switch.
(2) Check that the sunroof works normally.
Q: Does the sunroof works normally?

YES : No action is necessary and testing is complete.
NO : Replace the sunroof motor assembly. Check that the

sunroof works normally.

INSPECTION PROCEDURE F-2: Sunroof: Any of the sunroof switch positions is defective.

.

TECHNICAL DESCRIPTION (COMMENT)
The sunroof switch or the sunroof motor assembly
may be defective.

.

TROUBLESHOOTING HINTS

• The sunroof switch may be defective

• The sunroof motor assembly may be defective

• The wiring harness or connectors may have

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

SUNROOF-ECU

SUNROOF
SWITCH

OVERHEAD
CONSOLE
ASSEMBLY

SUNROOF MOTOR
ASSEMBLY

Sunroof Switch Circuit