Optical Sensor System Inspection

AUTO LIGHT SYSTEM


Optical Sensor System Inspection

1.CHECK OPTICAL SENSOR INPUT SIGNAL
CONSULT-III DATA MONITOR
1. Select "OPTICAL SENSOR" of BCM (HEAD LAMP) data monitor item.
2. Check difference in the voltage when optical sensor is illuminated and not illuminated.

Illuminated
OPTICAL SENSOR: 3.1 V or more
Not illuminated
OPTICAL SENSOR: 0.6 V or less

CAUTION:
Optical sensor must be securely subjected to work lamp light. If the optical sensor is insufficiently illuminated, the measured value may not satisfy the standard.
CHECK THE OPTICAL SENSOR INPUT SIGNAL





1. Turn ignition switch ON.
2. Check voltage between BCM harness connector and ground.






OK or NG
OK - INSPECTION END
NG - GO TO 2.
2.CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT





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





4. Check continuity (short circuit) between BCM harness connector and ground.





OK or NG
OK - GO TO 3.
NG - Repair harness or connector.
3.CHECK OPTICAL SENSOR SIGNAL CIRCUIT





1. Check continuity (open circuit) between BCM harness connector and optical sensor harness connector.





2. Check continuity between (short circuit) BCM harness connector and ground.





OK or NG
OK - GO TO 4.
NG - Repair harness or connector.
4.CHECK OPTICAL SENSOR GROUND CIRCUIT





1. Check continuity (open circuit) between BCM harness connector and optical sensor harness connector.





2. Check continuity (short circuit) between BCM harness connector and ground.





OK or NG
OK - GO TO 5.
NG - Repair harness or connector.
5.CHECK OPTICAL SENSOR VOLTAGE





1. Connect BCM connector.
2. Turn ignition switch ON.
3. Check voltage between BCM harness connector and ground.





OK or NG
OK - Replace optical sensor. Service and Repair.
NG - Replace BCM. Service and Repair.