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Home >> Infiniti >> 2009 >> M45 Base >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Body, Lock & Security System >> Service Information >> Intelligent Key System >> Check Intelligent Key Warning Buzzer

Check Intelligent Key Warning Buzzer

  1. CHECK INTELLIGENT KEY WARNING BUZZER

    Check voltage between Intelligent Key unit connector and ground.

    VOLTAGE REFERENCE CHART

    Terminals Warning buzzer operation condition Voltage (V) (Approx.)
    (+) (-)
    Intelligent Key unit connector Terminal
    M33 55 Ground Yes 0
    No Battery voltage
    Fig 1: Checking Voltage Between Intelligent Key Unit Connector And Ground
    G05212233Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Intelligent Key warning buzzer is OK.

    NG: GO TO 2.

  2. CHECK INTELLIGENT KEY WARNING BUZZER POWER SUPPLY CIRCUIT
    1. Turn ignition switch OFF.
    2. Disconnect Intelligent Key warning buzzer connector.
    3. Check voltage between Intelligent Key warning buzzer connector and ground.
    VOLTAGE REFERENCE CHART

    Terminals Voltage (V) (Approx.)
    (+) (-)
    Intelligent Key warning buzzer connector Terminal
    E37 3 Ground Battery voltage
    Fig 2: Checking Voltage Between Intelligent Key Warning Buzzer Connector And Ground
    G05212234Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 3.

    NG: Repair or replace Intelligent Key warning buzzer power supply circuit.

  3. CHECK INTELLIGENT KEY WARNING BUZZER CIRCUIT
    1. Disconnect Intelligent Key unit connector.
    2. Check continuity between Intelligent Key unit connector and Intelligent Key warning buzzer connector.
      CONTINUITY REFERENCE CHART

      A B Continuity
      Intelligent Key unit connector Terminal Intelligent Key warning buzzer connector Terminal
      M33 55 E37 1 Yes
    3. Check continuity between Intelligent Key unit connector and ground.
    Fig 3: Checking Continuity Between Intelligent Key Unit And Intelligent Key Warning Buzzer Connector
    G05212235Courtesy of NISSAN MOTOR CO., U.S.A.
    CONTINUITY REFERENCE CHART

    A Ground Continuity
    Intelligent Key unit connector Terminal
    M33 55 No

    OK or NG 

    OK: GO TO 4.

    NG: Repair or replace harness between Intelligent Key unit and Intelligent Key warning buzzer.

  4. CHECK INTELLIGENT KEY WARNING BUZZER OPERATION

    Connect battery power supply to Intelligent Key warning buzzer terminals 1 and 3, and check the operation.

    1 (BAT-) - 3 (BAT+): the buzzer sounds 

    OK or NG 

    OK: Intelligent Key warning buzzer is OK.

    NG: Replace Intelligent Key warning buzzer.

    Fig 4: Checking Intelligent Key Warning Buzzer Operation
    G05212236Courtesy of NISSAN MOTOR CO., U.S.A.
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