Mitsubishi L200. Manual — part 541

SUNROOF ASSEMBLY

BODY

42-224

Inspection Procedure 2: Any of The Sunroof Switch Positions is Defective.

CAUTION

Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.

Sunroof Switch Circuit

SUNROOF MOTOR
ASSEMBLY

SUNROOF
SWITCH

ECU

Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Grey R : Red P : Pink V : Violet PU : Purple

COMMENTS ON TROUBLE SYMPTOM
If any of the sunroof switch positions is defective, the
communication line between the sunroof switch and
the sunroof motor assembly (sunroof-ECU) may be
defective.

PROBABLE CAUSES

• Malfunction of the sunroof switch

• Malfunction of the sunroof motor assembly (sun-

roof-ECU)

• Damaged harness wires and connectors

SUNROOF ASSEMBLY

BODY

42-225

DIAGNOSIS PROCEDURE

STEP 1. Connector check: D-29 sunroof switch
connector

AC903885AI

Connector: D-28, D-29 <LHD>

Harness side

D-29 (B)

D-29 (B)

D-28

D-28

Harness side

AC903886AG

Connector: D-28, D-29 <RHD>

Harness side

D-29 (B)

D-29 (B)

D-28

D-28

Harness side

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Repair the connector.

STEP 2. Check the sunroof switch.
Check that the sunroof switch works normally. Refer
to

P.42-230

.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Replace the sunroof switch.

STEP 3. Connector check: D-28 sunroof motor
assembly connector

AC903885AI

Connector: D-28, D-29 <LHD>

Harness side

D-29 (B)

D-29 (B)

D-28

D-28

Harness side

AC903886AG

Connector: D-28, D-29 <RHD>

Harness side

D-29 (B)

D-29 (B)

D-28

D-28

Harness side

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Repair the connector.

STEP 4. Retest the system.

Q: Which switch position is defective?

"TILT UP" :

Go to Step 5.

"OPEN" :

Go to Step 6.

"CLOSE/DOWN" :

Go to Step 7.

SUNROOF ASSEMBLY

BODY

42-226

STEP 5. Check the wiring harness between D-28
sunroof motor assembly connector terminal No.1
and D-29 sunroof switch connector terminal
No.3.

AC903885AI

Connector: D-28, D-29 <LHD>

Harness side

D-29 (B)

D-29 (B)

D-28

D-28

Harness side

AC903886AG

Connector: D-28, D-29 <RHD>

Harness side

D-29 (B)

D-29 (B)

D-28

D-28

Harness side

• Check the communication line for open and short

circuit.

Q: Is the check result normal?

YES :

Replace the sunroof motor assembly.

NO :

Repair the wiring harness.

STEP 6. Check the wiring harness between D-28
sunroof motor assembly connector terminal No.6
and D-29 sunroof switch connector terminal
No.5.

AC903885AI

Connector: D-28, D-29 <LHD>

Harness side

D-29 (B)

D-29 (B)

D-28

D-28

Harness side

AC903886AG

Connector: D-28, D-29 <RHD>

Harness side

D-29 (B)

D-29 (B)

D-28

D-28

Harness side

• Check the communication line for open and short

circuit.

Q: Is the check result normal?

YES :

Replace the sunroof motor assembly.

NO :

Repair the wiring harness.

SUNROOF ASSEMBLY

BODY

42-227

STEP 7. Check the wiring harness between D-28
sunroof motor assembly connector terminal No.5
and D-29 sunroof switch connector terminal
No.6.

AC903885AI

Connector: D-28, D-29 <LHD>

Harness side

D-29 (B)

D-29 (B)

D-28

D-28

Harness side

AC903886AG

Connector: D-28, D-29 <RHD>

Harness side

D-29 (B)

D-29 (B)

D-28

D-28

Harness side

• Check the communication line for open and short

circuit.

Q: Is the check result normal?

YES :

Replace the sunroof motor assembly.

NO :

Repair the wiring harness.

Inspection Procedure 3: Sunroof Anti-trap Function does not Work Normally.

CAUTION

Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.
COMMENTS ON TROUBLE SYMPTOM
If the sunroof anti-trap function does not work, the
sunroof motor assembly (sunroof-ECU) may be
defective.

PROBABLE CAUSE

• Malfunction of the sunroof motor assembly (sun-

roof-ECU)

DIAGNOSIS PROCEDURE

Retest the system.
Check that the sunroof anti-trap function works nor-
mally.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00, How to
use Troubleshooting/inspection Service
Points

− How to Cope with Intermittent

Malfunction ).

NO :

Replace the sunroof motor assembly.

ON-VEHICLE SERVICE

WATER TEST

M1426000900531

Check if there are any leaks in the sunroof by the fol-
lowing procedures:
1. Fully close the sunroof lid glass.
2. Adjust the water pressure so that water comes out

of the hose to a height of approx. 50 cm when the
hose is held vertically facing upwards.