DTC P0719: Brake Switch Circuit - Low Input (4L80-E Transmission): Description
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The TCC Brake switch indicates the brake pedal status. The normally closed TCC Brake switch supplies a battery voltage signal to the Powertrain Control Module (PCM). The signal voltage circuit opens when the brakes are applied. If the PCM detects an open TCC Brake switch circuit during accelerations, then DTC P0719 sets.