Diagnosis Procedure

OPTICAL SENSOR


Description

The optical sensor converts the outside brightness (lux) to voltage and transmits the optical sensor signal to the BCM.





OPTICAL SENSOR


Diagnosis Procedure

Regarding Wiring Diagram information, Auto Light System.
1.CHECK OPTICAL SENSOR POWER SUPPLY INPUT
1. Turn the ignition switch ON.
2. Turn the lighting switch to AUTO.





3. Check the voltage between the optical sensor harness connector and ground.





Is the measurement value normal?
YES - GO TO 2
NO - GO TO 4
2.CHECK OPTICAL SENSOR GROUND INPUT





Check the voltage between the optical sensor harness connector and ground.





Is the measurement value normal?
YES - GO TO 3
NO - GO TO 6
3.CHECK OPTICAL SENSOR SIGNAL OUTPUT





With the optical sensor illuminating, check voltage between the optical sensor harness connector and ground.







Is the measurement value normal?
YES - GO TO 7
NO - Replace the optical sensor.
4.CHECK OPTICAL SENSOR POWER SUPPLY FOR OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the optical sensor connector and BCM connector.





3. Check continuity between the optical sensor harness connector and the BCM harness connector.





Does continuity exist?
YES - GO TO 5
NO - Repair the harnesses or connectors.
5.CHECK OPTICAL SENSOR POWER SUPPLY FOR SHORT CIRCUIT





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





Does continuity exist?
YES - Repair the harnesses or connectors.
NO - Replace BCM. Body Control System .
6.CHECK OPTICAL SENSOR GROUND FOR OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the optical sensor connector and BCM connector.





3. Check continuity between the optical sensor harness connector and the BCM harness connector.





Does continuity exist?
YES - Replace BCM. Body Control System .
NO - Repair the harnesses or connectors.
7.CHECK OPTICAL SENSOR SIGNAL FOR OPEN CIRCUIT
1. Turn the ignition switch OFF.
2. Disconnect the optical sensor connector and BCM connector.





3. Check continuity between the optical sensor harness connector and the BCM harness connector.





Does continuity exist?
YES - GO TO 8
NO - Repair the harnesses or connectors.
8.CHECK OPTICAL SENSOR SIGNAL FOR SHORT CIRCUIT





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





Does continuity exist?
YES - Repair the harnesses or connectors.
NO - Replace BCM. Body Control System.