Operation CHARM: Car repair manuals for everyone.

Brake Release Switch

GASOLINE ENGINES
The cruise control module uses an electronic brake switch that contains one normally open and one normally closed switch contact. These switch contacts are part of the zero adjust brake switch. When the brake pedal is depressed, the two brake switch contacts change their input state at the cruise control module. The cruise control module then shuts off all cruise control outputs.

DIESEL ENGINES
The Powertrain Control Module (PCM) uses an electronic brake switch that contains one normally open and one normally closed switch contact. These switch contacts are part of the zero adjust brake switch.

When the brake pedal is depressed, the two brake switch contacts change their input state at the PCM. The PCM then shuts off all cruise control outputs to the electronic throttle system.