Optical Sensor

OPTICAL SENSOR

Description

The optical sensor measures ambient light and transmits the optical sensor signal to the BCM.


Component Function Check


1. CHECK OPTICAL SENSOR SIGNAL TO BCM

CONSULT
1.Turn the ignition switch ON.
2.Select OPTI SEN (DTCT) of BCM (HEAD LAMP) DATA MONITOR item.
3.Turn the lighting switch to AUTO.





Is the inspection result normal?
YES- Optical sensor is normal.
NO- Refer to "Diagnosis Procedure" .


Diagnosis Procedure


Regarding Wiring Diagram information, refer to EXL-43, "Wiring Diagram".


1. CHECK OPTICAL SENSOR POWER SUPPLY INPUT

1.Turn the ignition switch OFF.
2.Disconnect the optical sensor harness connector M15.
3.Turn the ignition switch ON.
4.Turn the lighting switch to AUTO.
5.Check the voltage between the optical sensor harness connector M15 and ground.





Is the inspection result normal?
YES- GO TO 2.
NO- GO TO 3.

2. CHECK OPTICAL SENSOR GROUND CIRCUIT

1.Turn the ignition switch OFF.
2.Check continuity between the optical sensor harness connector M15 and ground.





Is the inspection result normal?
YES- GO TO 6
NO- GO TO 5

3. CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT

1.Turn the ignition switch OFF.
Revision: March 20122013 Infiniti JX
2.Disconnect the BCM harness connector M18.
3.Check continuity between optical sensor harness connector M15 and BCM harness connector M18.





4.Check continuity between optical sensor harness connector M15 terminal 1 and ground.





Is the inspection result normal?
YES- Replace BCM. Refer to "Removal and Installation" Service and Repair.
NO- Repair or replace the harness or connectors.

4. CHECK OPTICAL SENSOR POWER SUPPLY FOR SHORT CIRCUIT

Check continuity between optical sensor harness connector and ground.





Is the inspection result normal?
YES- Replace BCM. Refer to "Removal and Installation" Service and Repair.
NO- Repair or replace harness or connector.

5. CHECK OPTICAL SENSOR GROUND FOR OPEN CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect the BCM harness connector M18.
3.Check continuity between optical sensor harness connector M15 terminal 3 and BCM harness connector
M18 terminal 17.





Is the inspection result normal?
YES- Replace BCM. Refer to "Removal and Installation" Service and Repair.
NO- Repair or replace harness or connector.

6. CHECK OPTICAL SENSOR SIGNAL OPEN CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect optical sensor connector and BCM connector.
3.Check continuity between optical sensor harness connector and BCM harness connector.





4.Check continuity between optical sensor harness connector and ground.





Is the inspection result normal?
YES- Replace the optical sensor. Refer to "Removal and Installation" Removal and Installation.
Revision: March 20122013 Infiniti JX
NO- Repair or replace harness or connectors.
Revision: March 20122013 Infiniti JX