Nissan Murano: Power Supply and Ground Circuit / Sunshade Motor Assembly

Description

• BCM supplies the sunshade motor assembly with power.

• CPU is integrated in sunshade motor assembly.

• Slide open/close controlled by the sunshade switch operation.

CHECK SUNSHADE MOTOR FUNCTION

Does the slide open and close functions operate normally with the sunshade switch?

Is the inspection result normal?

Sunshade motor assembly is OK.

Refer to Diagnosis Procedure.

CHECK POWER SUPPLY

1. Ignition switch OFF.

2. Disconnect sunshade motor assembly connector.

3. Ignition switch ON.

4. Check voltage between sunshade motor assembly harness connector and ground.

   (+)		(–)	Voltage (Approx.)
   Sunshade motor assembly
   Connector	Terminal
   R5	1	Ground	Battery voltage

Is the inspection result normal?

GO TO 2.

Repair or replace the harness.

CHECK GROUND CIRCUIT

1. Ignition switch OFF.

2. Check continuity between sunshade motor assembly harness connector and ground.

   Sunshade motor assembly		—	Continuity
   Connector	Terminal
   R5	5	Ground	Yes

Is the inspection result normal?

GO TO 3.

Repair or replace the harness.

CHECK SUNSHADE SWITCH INPUT SIGNAL

1. Ignition switch ON.

2. Check voltage between the moonroof motor assembly harness connector and ground.

   (+)		(–)	Condition	Voltage (Approx.)
   Moonroof motor assembly
   Connector	Terminals
   R4	3	Ground	Moonroof switch is operated SLIDE OPEN	0 V
   			Other than above	Battery voltage
   	2		Moonroof switch is operated SLIDE CLOSE	0 V
   			Other than above	Battery voltage

Is the inspection result normal?

GO TO 6.

GO TO 4.

CHECK SUNSHADE SWITCH CIRCUIT

1. Ignition switch OFF.

2. Disconnect the moonroof motor assembly connector and sunshade switch connector.

3. Check continuity between the moonroof motor assembly harness connector and sunshade switch harness connector.

   Moonroof motor assembly		Sunshade switch		Continuity
   Connector	Terminal	Connector	Terminal
   R4	3	R99	2	Yes
   	2		1

4. Check continuity between the moonroof motor assembly harness connector and ground.

   Moonroof motor assembly		—	Continuity
   Connector	Terminal
   R4	2	Ground	No
   	3

Is the inspection result normal?

GO TO 5.

Repair or replace harness.

CHECK MOONROOF SWITCH GROUND CIRCUIT

Check continuity between the sunshade switch harness connector and ground.

Is the inspection result normal?

Refer to Component Inspection.

Repair or replace harness.

CHECK SUNSHADE MOTOR ASSEMBLY COMMUNICATION SIGNAL

1. Disconnect moonroof motor assembly connector.

2. Check continuity between sunshade motor assembly harness connector and moonroof motor assembly harness connector.

   Moonroof motor assembly		Sunshade motor assembly		Continuity
   Connector	Terminal	Connector	Terminal
   R4	9	R5	9	Yes

3. Check continuity between the moonroof motor assembly harness connector and ground.

   Moonroof motor assembly		—	Continuity
   Connector	Terminal
   R4	9	Ground	No

Is the inspection result normal?

Replace sunshade motor assembly. Refer to Removal and Installation.

Repair or replace harness.