Optical Sensor System Inspection

WARNING: This page is about a different car, the 2003 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

CHECK OPTICAL SENSOR OUTPUT SIGNAL

With CONSULT-II

Using "OPTICAL SEND" on DATA MONITOR screen, check difference in the voltage when light is applied to optical sensor and light is not applied to optical sensor.

Fig 1: OPTICAL SEND on Consult-II DATA MONITOR screen

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

TERMINAL SPECIFICATION

Condition	Reference value of data monitor [V]
Light is applied to optical sensor.	More than 3
Light is not applied to optical sensor.	Approx. 0.5

Without CONSULT-II

Turn ignition switch to ON position.
Check voltage between BCM harness connector M4 terminal 52 (G/R) and ground when light is applied to optical sensor and light is not applied to optical sensor.

TERMINAL SPECIFICATION

Terminals			Condition	Voltage (V)
(+)		(-)
Connector	Terminal (Wire color)	Ground
M4	52 (G/R)		Light is applied to optical sensor	More than 3
M4	52 (G/R)		Light is not applied to optical sensor	Approx. 0.5

Fig 2: Checking Voltage Between BCM Harness Connector M4 Terminal 52 (G/R) And Ground

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

OK or NG

OK: INSPECTION END
NG: GO TO 2.

CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT
1. Turn ignition switch to OFF position.
2. Disconnect the BCM connector and the optical sensor connector.
3. Check continuity between BCM harness connector M4 terminal 59 (SB) and optical sensor harness connector M110 terminal 1 (SB).
  1. Continuity should exist.
  Fig 3: Checking Optical Sensor Power Supply Circuit Harness Continuity And Continuity To Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between BCM harness connector M4 terminal 59 (SB) and ground.
  1. Continuity should not exist.
OK or NG
1. OK: GO TO 3.
2. NG: Repair harness or connector.
CHECK OPTICAL SENSOR SIGNAL CIRCUIT
1. Check continuity between BCM harness connector M4 terminal 52 (G/R) and optical sensor harness connector M110 terminal 2 (G/R).
  1. Continuity should exist.
  Fig 4: Checking Optical Sensor Signal Circuit Harness Continuity And Continuity To Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check continuity between BCM harness connector M4 terminal 52 (G/R) and ground.
  1. Continuity should not exist.
OK or NG
1. OK: GO TO 4.
2. NG: Repair harness or connector.
CHECK OPTICAL SENSOR GROUND CIRCUIT
1. Check continuity between BCM harness connector M4 terminal 58 (Y/B) and optical sensor harness connector M110 terminal 3 (Y/B).
  1. Continuity should exist.
  Fig 5: Checking Harness Continuity And Continuity To Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
2. Check continuity between BCM harness connector M4 terminal 58 (Y/B) and ground.
  1. Continuity should not exist.
OK or NG
1. OK: GO TO 5.
2. NG: Repair harness or connector.
CHECK OPTICAL SENSOR POWER SUPPLY OUTPUT SIGNAL
1. Connect BCM connector.
2. Check voltage between BCM harness connector M4 terminal 59 (SB).
  1. Approx. 5V
OK or NG
1. OK: Replace the optical sensor.
2. NG: Replace the BCM.