Optical Sensor System Inspection

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.
   TERMINALS VOLTAGE REFERENCE CHART
   
   

   Terminal			Condition	Voltage (Approx.)
   (+)		(-)
   BCM connector	Terminal
   M1	14	Ground	Illuminated Optical sensor	3.1 V or more
   			Not illuminated Optical sensor	0.6 V or less

   Fig 1: Checking Voltage Between BCM Harness Connector Terminal 14 And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.
   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.

OK or NG 

OK: INSPECTION END

NG: GO TO 2.

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.
   TERMINALS CONTINUITY REFERENCE CHART
   
   

   BCM		Optical sensor		Continuity
   Connector	Terminal	Connector	Terminal
   M1	17	M48	1	Yes

4. Check continuity (short circuit) between BCM harness connector and ground.
   TERMINALS CONTINUITY REFERENCE CHART
   
   

   BCM connector	Terminal	Ground	Continuity
   M1	17		No

   Fig 2: Checking Continuity (Open Circuit) Between BCM Harness Connector Terminal 17 And Optical Sensor And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: GO TO 3.

NG: Repair harness or connector.

1. Check continuity (open circuit) between BCM harness connector and optical sensor harness connector.
   TERMINALS CONTINUITY REFERENCE CHART
   
   

   BCM		Optical sensor		Continuity
   Connector	Terminal	Connector	Terminal
   M1	14	M48	2	Yes

2. Check continuity between (short circuit) BCM harness connector and ground.
   TERMINALS CONTINUITY REFERENCE CHART
   
   

   BCM connector	Terminal	Ground	Continuity
   M1	14		No

   Fig 3: Checking Continuity (Open Circuit) Between BCM Harness Connector Terminal 14 And Optical Sensor And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: GO TO 4.

NG: Repair harness or connector.

1. Check continuity (open circuit) between BCM harness connector and optical sensor harness connector.
   TERMINALS CONTINUITY REFERENCE CHART
   
   

   BCM		Optical sensor		Continuity
   Connector	Terminal	Connector	Terminal
   M1	18	M48	3	Yes

2. Check continuity (short circuit) between BCM harness connector and ground.
   TERMINALS CONTINUITY REFERENCE CHART
   
   

   BCM connector	Terminal	Ground	Continuity
   M1	18		No

   Fig 4: Checking Continuity (Open Circuit) Between BCM Harness Connector Terminal 18 And Optical Sensor And Ground

   Courtesy of NISSAN MOTOR CO., U.S.A.

OK or NG 

OK: GO TO 5.

NG: Repair harness or connector.

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

   Terminal			Voltage (Approx.)
   (+)		(-)
   BCM connector	Terminal
   M1	17	Ground	5.0 V

OK or NG 

OK: Replace optical sensor. Refer to "REMOVAL AND INSTALLATION FOR OPTICAL SENSOR ".

NG: Replace BCM. Refer to "REMOVAL AND INSTALLATION OF BCM ".

Fig 5: Checking Voltage Between BCM Connector Terminal 17 And Ground

Courtesy of NISSAN MOTOR CO., U.S.A.