Mitsubishi Montero Sport (2004+). Manual - part 480

SUNROOF ASSEMBLY

TSB Revision

BODY

42-175

DIAGNOSIS

STEP 1. Check sunroof-ECU connector E-07 and sunroof 
switch connector E-03 for damage for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Are sunroof-ECU connector E-07 and sunroof switch 

connector E-03 damaged?
YES : Repair or replace the damaged components. Refer to 

GROUP 00E 

P.00E-2

, Harness Connector 

Inspection. Then go to Step 5.

NO :  Go to Step 2.

AC309311

CONNECTORS: E-03, E-07

E-07

E-03

E-07 COMPONENT SIDE

E-03 COMPONENT SIDE

AB

SUNROOF ASSEMBLY

TSB Revision

BODY

42-176

STEP 2. Measure the power supply voltage at sunroof 
switch connector E-03.
(1) Remove the headlining. (Refer to GROUP 52A, Headlining 

P.52A-42

.)

(2) Disconnect sunroof switch connector E-03 and measure at 

the harness side.

(3) Turn the ignition key "ON".

(4) Measure the voltage between terminal 1 and ground, and 

between terminal 3 and ground.

• The measured value should be approximately 12 volts 

(battery positive voltage).

Q: Does the measured voltage correspond with this range?

YES : Go to Step 4.
NO :  Go to Step 3.

STEP 3. Check the harness wires between sunroof switch 
connector E-03 (terminal No.1 and 3) and sunroof-ECU 
connector E-07 (terminal No.4 and 5).
Q: Are there any damaged wires between sunroof switch 

connector E-03 (terminal No.1 and 3) and sunroof-ECU 
connector E-07 (terminal No.4 and 5)?
YES : Repair or replace the harness wire. Then go to Step 

4.

NO :  Replace the sunroof-ECU. Then go to Step 4.

AC201995

4 3

1

5

6

2

CONNECTOR: E-03

E-03

AB

COMPONENT SIDE

5 4

6

3

2

1

AC004959AC

E-03 HARNESS CONNECTOR:
COMPONENT SIDE

AC309311

CONNECTORS: E-03, E-07

E-07

E-03

E-07 COMPONENT SIDE

E-03 COMPONENT SIDE

AB

SUNROOF ASSEMBLY

TSB Revision

BODY

42-177

STEP 4. Check the harness wire between sunroof switch 
connector E-03 (terminal No.4) and ground.

NOTE: After inspecting intermediate connector C-01 inspect 
the wire. If intermediate connector C-01 is damaged, repair or 
replace it. Refer to GROUP 00E 

P.00E-2

, Harness Connector 

Inspection. Then go to Step 5.
Q: Is the harness wire between sunroof switch connector 

E-03 (terminal No.4) and ground damaged?
YES : Repair or replace the harness wire, then go to Step 5.
NO :  Replace the sunroof switch. Then go to Step 5.

STEP 5. Retest the system.
Q: Does the sunroof open and close normally?

YES : The procedure is complete.
NO :  Return to Step 1.

AC201995

4 3

1

5

6

2

CONNECTOR: E-03

E-03

AB

COMPONENT SIDE

AC309309AC

C-01

CONNECTOR: C-01

SUNROOF ASSEMBLY

TSB Revision

BODY

42-178

INSPECTION PROCEDURE 3: The Sunroof Motor does not Operate.

.

CIRCUIT OPERATION
The sunroof-ECU monitors the sunroof switch status 
(slide open, slide close, tilt down, tilt up) and oper-
ates the sunroof motor.

.

TECHNICAL DESCRIPTION (COMMENT)
The cause may be a malfunction of the sunroof 
motor power supply/ground circuit system.

.

TROUBLESHOOTING HINTS

• Malfunction of the sunroof-ECU

• Malfunction of the sunroof motor

• Damaged harness wires or connectors

SUNROOF
MOTOR

CIRCUIT
BREAKER

SUNROOF-
ECU

Sunroof Motor Circuit

AC004958AH

CONNECTORS: E-07, E-09

E-07

E-09