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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 59 (Automatic Transmission Diagnosis - 4L80-E) >> Diagnostic Tests >> DTC P0719: Brake Switch Circuit - Low Input >> Circuit Description

Circuit Description

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The stoplamp switch indicates the brake pedal status. The normally-closed stoplamp switch supplies a battery voltage signal to the PCM. The signal voltage circuit opens when the brakes are applied.

If the PCM detects an open stoplamp switch circuit during accelerations, then DTC P0719 sets. DTC P0719 is a type "C" DTC.

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