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Home >> Pontiac >> 2005 >> Aztek Base, AWD >> Repair and Diagnosis >> Brakes >> Antilock Brake System And Traction Control System >> Diagnostic Information and Procedures >> DTC C0161 >> Circuit Description

Circuit Description

The stop lamp switch is a normally open switch. When the brake pedal is depressed, the electronic brake control module (EBCM) will sense battery voltage. This allows the EBCM to determine the state of the brake lamps. The EBCM sources 5 volts on the stop lamp switch signal circuit, when the stop lamp switch is inactive. The voltage is supplied a ground path through the stop lamp bulbs.

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