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Home >> Nissan-Datsun >> 2011 >> Versa Base, Standard >> Repair and Diagnosis (Single Page) >> Body & Frame >> Exterior Body Panels >> Body, Lock & Security System >> Service Information >> Intelligent Key System >> Key Switch (Intelligent Key Unit Input) Check
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Key Switch (Intelligent Key Unit Input) Check

  1. CHECK KEY SWITCH INPUT SIGNAL

    With CONSULT-III 

    Check key switch ("KEY SW") in "DATA MONITOR" mode with CONSULT-III.

    DATA MONITOR MODE REFERENCE

    Monitor item Condition
    KEY SW Insert mechanical key into ignition switch: ON
    Remove mechanical key from ignition switch: OFF

    Without CONSULT-III 

    1. Turn ignition switch OFF.
    2. Disconnect Intelligent Key unit connector.
    3. Check voltage between Intelligent Key unit and ground.
    VOLTAGE SPECIFICATION

    Terminals Condition of key switch Voltage (V) (Approx.)
    (+) (-)
    Intelligent Key unit connector Terminal
    M52 7 Ground Insert mechanical key into ignition switch Battery voltage
    Remove mechanical key from ignition switch 0
    Fig 1: Checking Voltage Between Intelligent Key Unit And Ground
    G05933190Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: Key switch circuit is OK.

    NG: GO TO 2

  2. CHECK KEY SWITCH POWER SUPPLY CIRCUIT
    1. Remove mechanical key from ignition switch.
    2. Disconnect key switch and ignition knob switch connector.
    3. Check voltage between key switch and ignition knob switch and ground.
    VOLTAGE SPECIFICATION

    Terminals Voltage (V) (Approx.)
    (+) (-)
    Key switch and ignition knob switch connector Terminal
    M73 2 Ground Battery voltage
    Fig 2: Checking Voltage Between Key Switch And Ignition Knob Switch And Ground
    G05933191Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 3

    NG: Repair or replace key switch and ignition knob switch power supply circuit.

  3. CHECK KEY SWITCH

    Check continuity of key switch and ignition knob switch.

    CONTINUITY SPECIFICATION

    Terminal Condition of key switch Continuity
    Key switch and ignition knob switch
    1 2 Insert mechanical key into ignition switch Yes
    Remove mechanical key from ignition switch No
    Fig 3: Checking Continuity Of Key Switch And Ignition Knob Switch
    G05933192Courtesy of NISSAN MOTOR CO., U.S.A.

    OK or NG 

    OK: GO TO 4

    NG: Replace key cylinder assembly (built-in key switch).

  4. CHECK KEY SWITCH CIRCUIT
    1. Disconnect Intelligent Key unit connector.
    2. Check continuity between Intelligent Key unit and key switch and ignition knob switch.
      CONTINUITY SPECIFICATION

      A B Continuity
      Intelligent Key unit connector Terminal Key switch and ignition knob switch connector Terminal
      M52 7 M73 1 Yes
      Fig 4: Checking Continuity Between Intelligent Key Unit And Ground
      G05933193Courtesy of NISSAN MOTOR CO., U.S.A.
    3. Check continuity between Intelligent Key unit and ground.
      CONTINUITY SPECIFICATION

      A Ground Continuity
      Intelligent Key unit connector Terminal
      M52 7 No

    OK or NG 

    OK: Check the condition of harness and harness connector.

    NG: Repair or replace harness between Intelligent Key unit and key switch and ignition knob switch.

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