Nissan Murano: Interior Lighting System :: Dtc/circuit Diagnosis / Map Lamp Circuit

Description

Controls the lamp (ground side) by PWM signal (duty) when the map lamp main switch is DOOR.

CAUTION:

Check the following items first:

CHECK MAP LAMP CONTROL FUNCTION

CONSULT

1. Ignition switch ON.

2. Switch map lamp main switch DOOR.

3. Select “DR SEAT LAMP TEST” or “AS SEAT LAMP TEST” in “Active Test” mode of “BCM(INTELLIGENT KEY)”.

4. While operating the test items, check map lamps operation.

   Test item		Operation
   DR SEAT LAMP TEST	On	Map lamp (driver side)	ON
   	Off		OFF
   AS SEAT LAMP TEST	On	Map lamp (passenger side)	ON
   	Off		OFF

Are the map lamps turned ON/OFF?

Map lamp circuit is normal.

Refer to Diagnosis Procedure.

CHECK MAP LAMP CONTROL OUTPUT

CONSULT

1. Ignition switch ON.

2. Switch map lamp main switch DOOR.

3. Select “DR SEAT LAMP TEST” or “AS SEAT LAMP TEST” in “Active Test” mode of “BCM(INTELLIGENT KEY)”.

4. While operating the test items, check voltage between BCM harness connector and ground.

   Driver side

   BCM		—	Test item		Voltage (Approx.)
   Connector	Terminal
   M19	47	Ground	DR SEAT LAMP TEST	On	0 V
   				Off	Battery voltage

   Passenger side

   BCM		—	Test item		Voltage (Approx.)
   Connector	Terminal
   M19	46	Ground	AS SEAT LAMP TEST	On	0 V
   				Off	Battery voltage

Is the inspection result normal?

GO TO 2.

Replace BCM. Refer to Removal and Installation.

GO TO 3.

CHECK MAP LAMP CONTROL CIRCUIT FOR OPEN

1. Ignition switch OFF.

2. Disconnect the BCM and front room/map lamp assembly connector.

3. Check continuity between the BCM harness connector and front room/map lamp assembly harness connector.

   BCM			Front room/map lamp assembly		Continuity
   Connector		Terminal	Connector	Terminal
   Driver side	M19	47	R6	4	Yes
   Passenger side		46		5

Is the inspection result normal?

Replace the front room/map lamp assembly. Refer to Removal and Installation.

Repair the harnesses or connectors.

CHECK MAP LAMP CONTROL CIRCUIT FOR SHORT

1. Ignition switch OFF.

2. Disconnect the BCM and front room/map lamp assembly connector.

3. Check continuity between the BCM harness connector and ground.

   BCM			—	Continuity
   Connector		Terminal
   Driver side	M19	47	Ground	No
   Passenger side		46

Is the inspection result normal?

Replace BCM. Refer to Removal and Installation.

Repair the harnesses or connectors.