•  While the brake pedal is depressed, the brake switch contact point closes (ON) and the PCM detects B+. While the brake pedal is released, the brake switch contact point opens (OFF) and the PCM detects below 1.0 V.

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1	Brake switch
2	Brake light
3	Switch ON
4	Switch OFF
5	Brake pedal depressed
6	Brake pedal released