2002 Nissan-Datsun Sentra SE-R, StandardFACTORY OEM SERVICE PROCEDURE

Optical sensor System Inspection

WARNING: This page is about a different car, the 2003 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK OPTICAL SENSOR INPUT 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.

    1. Illuminated 
    2. Optical sensor : 3.1V or more 
    3. Not illuminated 
    4. Optical sensor : 0.6V 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.

    OK or NG

    1. OK : INSPECTION END
    2. NG : GO TO 2.
    Fig 1: Displaying "OPTICAL SENSOR" In Data Monitor Screen
    G03359389Courtesy of NISSAN MOTOR CO., U.S.A.
  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 M36 terminal 45 (BR/Y) and optical sensor harness connector M16 terminal 1 (BR/Y).
      1. Continuity should exist. 
    4. Check continuity (short circuit) between BCM harness connector M36 terminal 45 (BR/Y) and ground.
      1. Continuity should not exist. 
      Fig 2: Checking Continuity Between BCM Harness Connector M36 Terminal 45 And Optical Sensor Harness Connector M16 Terminal 1, And Between BCM Harness Connector M36 Terminal 45 And Ground
      G03359390Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK : GO TO 3.
    2. NG : Repair harness or connector.
  3. CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT 
    1. Check continuity (open circuit) between BCM harness connector M36 terminal 38 (W) and optical sensor harness connector M16 terminal 2 (W).
      1. Continuity should exist. 
    2. Check continuity (short circuit) between BCM harness connector M36 terminal 38 (W) and ground.
      1. Continuity should not exist. 

    OK or NG

    1. OK : GO TO 4.
    2. NG : Repair harness or connector.
    Fig 3: Checking Continuity Between BCM Harness Connector M36 Terminal 38 And Optical Sensor Harness Connector M16 Terminal 2, And Between BCM Harness Connector M36 Terminal 38 And Ground
    G03359391Courtesy of NISSAN MOTOR CO., U.S.A.
  4. CHECK OPTICAL SENSOR POWER SUPPLY CIRCUIT 
    1. Check continuity (open circuit) between BCM harness connector M37 terminal 53 (P) and optical sensor harness connector M16 terminal 3 (P).
      1. Continuity should exist. 
    2. Check continuity (short circuit) between BCM harness connector M37 terminal 53 (P) and ground.
      1. Continuity should not exist. 
      Fig 4: Checking Continuity Between BCM harness Connector M37 Terminal 53 And Optical Sensor Harness Connector M16 Terminal 3, And Between BCM Harness Connector M37 Terminal 53 And Ground
      G03359392Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG

    1. OK : GO TO 5.
    2. 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 M36 terminal 45 (BR/Y) and ground.
      1. Approx. 5V should exist. 

    OK or NG

    1. OK : Replace the optical sensor.
    2. NG : Replace BCM. Refer to REMOVAL AND INSTALLATION OF BCM .
    Fig 5: Checking Voltage Between BCM Harness Connector M36 Terminal 45 And Ground
    G03359393Courtesy of NISSAN MOTOR CO., U.S.A.
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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.