Mitsubishi 380. Manual - part 53

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-209

SUNROOF

GENERAL DESCRIPTION CONCERNING THE SUNROOF

M1549021200223

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

The following ECU affects the functions and control 
of the sunroof.

Sunroof timer function

The ETACS-ECU enables opening and closing of the sunroof 
for 30 seconds after the ignition is switched off.
During this timed operation, if the driver's door or passenger’s 
door is opened, the sunroof timer function is deactivated from 
that moment.

FUNCTION

CONTROL ECU

Sunroof timer function

ETACS-ECU, sunroof motor assembly

AC106227

ON

OFF

Possible

Impossible

ON

(Open)
OFF

(Closed)

Ignition

switch

Sunroof

operation

Door

Switch

AC

30 s

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-210

INSPECTION PROCEDURE F-1: Sunroof: Sunroof does not operate.

.

CIRCUIT OPERATION

• The sunroof motor assembly is energized 

through fusible link (5) by the battery.

• When the ignition switch (IG2) signal is on, the 

sunroof motor assembly is ready to operate.

.

TROUBLESHOOTING HINTS

• Refer to circuit diagrams GROUP-

90

• Refer to configuration diagrams GROUP-

80

• 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

AC305015

AC305015AF

FUSIBLE LINK (5)

16DB357A

CONNECTORS: C-27

16DB358A

CONNECTORS: D-03, D-04

D-04

D-03

AC307976

OVERHEAD CONSOLE
ASSEMBLY

CONNECTOR: D-03-1

AC

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-211

DIAGNOSIS

Required Special Tool:

• MB991223: Test Harness Set

STEP 1. Check sunroof motor assembly connector D-04 
for loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is sunroof motor assembly connector D-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

. Check that the sunroof works normally.

STEP 2. Check the fusible link (5) line of power supply 
circuit to the sunroof motor assembly. Measure the voltage 
at sunroof motor assembly connector D-04.
(1) Disconnect sunroof motor assembly connector D-04 and 

measure the voltage available at the wiring harness side of 
the connector.

(2) Measure the voltage between terminal 1 and ground.

• The voltage should measure approximately 12 volts 

(battery positive voltage).

Q: Is the measured voltage approximately 12 volts (battery 

positive voltage)?
YES : Go to Step 4.
NO :  Go to Step 3.

16DB359A

CONNECTOR: D-04

HARNESS SIDE

16DB359A

CONNECTOR: D-04

HARNESS SIDE

AC209365FG

CONNECTOR D-04
(HARNESS SIDE)

SYMPTOM PROCEDURES

SIMPLIFIED WIRING SYSTEM (SWS)

54B-212

STEP 3. Check the wiring harness between sunroof motor 
assembly connector D-04 (terminal 1) and fusible link (5).

NOTE: Also check junction block connectors C-212, C-215 and 
intermediate connector C-27 for loose, corroded, or damaged 
terminals, or terminals pushed back in the connector. If junction 
block connector C-212, C-215 or intermediate connector C-27 
is damaged, repair or replace the damaged component(s) as 
described in GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between sunroof motor assembly 

connector D-04 (terminal 1) and fusible link (5) 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.

AC305015

AC305015AF

FUSIBLE LINK (5)

16DB359A

CONNECTOR: D-04

HARNESS SIDE

54DB064A

CONNECTOR: C-27

54DB065A

C-212

HARNESS SIDE

HARNESS SIDE

C-215

CONNECTORS: C-212, C-215