Stop Lamp Switch Brake Pedal Position Switch
WARNING: This page is about a different car, the 2018 Infiniti Q60. However, it is still accessible from the selected car via links, so may be relevant.
Stop lamp switch 
and brake pedal position switch 
are installed to brake pedal bracket.
 Courtesy of NISSAN NORTH AMERICA, INC.
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EMCM detects the state of the brake pedal according to those two types of input (ON/OFF signal).
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Brake pedal
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Brake pedal position switch
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Stop lamp switch
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Released
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ON
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OFF
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Depressed
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OFF
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ON
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