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Home >> Nissan-Datsun >> 2012 >> Sentra SE-R >> Repair and Diagnosis >> Body & Frame >> Door Locks >> Body, Lock & Security System >> Service Information >> Remote Keyless Entry System >> Key Switch Check

Key Switch Check

  1. CHECK KEY SWITCH INPUT SIGNAL

    With CONSULT 

    Check key switch "KEY ON SW" in DATA MONITOR mode with CONSULT. Refer to , "CONSULT FUNCTION (BCM) ".

    • When key is inserted into ignition key cylinder:

      KEY ON SW: ON 

    • When key is removed from ignition key cylinder:

      KEY ON SW: OFF 

    Without CONSULT 

    Check voltage between BCM connector and ground.

    Connector Terminals Condition Voltage (V) (Approx.)
    (+) (-)
    M18 37 Ground Key is inserted. Battery voltage
    Key is removed. 0
    Fig 1: Checking Key Switch Input Signal
    G04902460Courtesy of NISSAN NORTH AMERICA, INC.

    OK or NG 

    OK: Key switch circuit is OK.

    NG: GO TO 2.

  2. CHECK KEY SWITCH
    1. Turn ignition switch OFF.
    2. Disconnect key switch connector.
    3. Check key switch.
      Terminals Condition Continuity
      1 - 2 Key is inserted. Yes
      Key is removed. No
      Fig 2: Checking Key Switch
      G04927563Courtesy of NISSAN NORTH AMERICA, INC.

      OK or NG 

      OK: Check the following.

      • 10A fuse [No. 19, located in fuse block (J/B)]
      • Harness for open or short between key switch and fuse
      • Harness for open or short between BCM and key switch

      NG: Replace key switch.

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