Optical Sensor System Inspection

WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK OUTPUT SIGNAL
Select "BCM" in CONSULT-II. Using "OPTICAL SENSOR" data from "DATA MONITOR", check difference in the voltage when the auto light sensor is illuminated and not illuminated.

Illuminated
1. Optical sensor: 3.1V or more
Not illuminated
1. Optical sensor: 0.6V or less
Fig 1: Displaying Data Monitor
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
1. OK >> INSPECTION END.
2. NG >> GO TO 2.

CHECK POWER SUPPLY CIRCUIT CONTINUITY

Turn ignition switch OFF.
Disconnect BCM connector and optical sensor connector.

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

CONTINUITY CONDITION

Terminals				Continuity
BCM		Optical sensor
Connector	Terminal (Wire color)	Connector	Terminal (Wire color)
M2	45 (P)	M63	1 (P)	Yes

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

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

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

CONTINUITY CONDITION

Terminals			Continuity
BCM		Ground
Connector	Terminal (Wire color)
M2	45 (P)		No

OK or NG

OK >> GO TO 3.
NG >> Repair harness or connector.

CHECK OUTPUT CIRCUIT CONTINUITY

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

CONTINUITY CONDITION

Terminals				Continuity
BCM		Optical sensor
Connector	Terminal (Wire color)	Connector	Terminal (Wire color)
M2	38 (Y/PU)	M63	2 (Y/PU)	Yes

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

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

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

CONTINUITY CONDITION

Terminals			Continuity
BCM		Ground
Connector	Terminal (Wire color)
M2	38 (Y/PU)		No

OK or NG

OK >> GO TO 4.
NG >> Repair harness or connector.

CHECK GROUND CIRCUIT CONTINUITY

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

CONTINUITY CONDITION

Terminals				Continuity
BCM		Optical sensor
Connector	Terminal (Wire color)	Connector	Terminal (Wire color)
M3	53 (B)	M63	3(B)	Yes

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

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

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

CONTINUITY CONDITION

Terminals			Continuity
BCM		Ground
Connector	Terminal (Wire color)
M3	53 (B)		No

OK or NG

OK >> GO TO 5.
NG >> Repair harness or connector.

CHECK SENSOR VOLTAGE

Connect BCM connector.
Turn ignition switch ON.
Check voltage between harness connector of BCM and ground.

VOLTAGE SPECIFICATION

Terminals			Voltage
BCM (+)		(-)
Connector	Terminal (Wire color)
M2	45 (P)	Ground	Approx.5V

OK or NG

OK >> Replace the optical sensor.
NG >> Replace BCM. Refer to REMOVAL AND INSTALLATION OF BCM in BODY CONTROL MODULE article. .

Fig 5: Checking Voltage Between Harness Connector Of BCM And Ground

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