Brake Switch

The stoplamp switch and the cruise control deactivator switch are electrical inputs controlling the cruise control system. The stoplamp switch is a normally open switch that is hard-wired to the PCM. When the brake pedal is applied, the switch closes and applies a voltage signal to the PCM, deactivating the cruise control. The cruise control deactivator switch is a normally closed switch that is hard-wired to the IPC. When the brake pedal is applied, the switch opens and removes ground signal from the IPC. The IPC sends a HS-CAN message to the PCM to signal the brake pedal is applied. The PCM compares the inputs from the stoplamp switch and the cruise control deactivator switch. If a deviation occurs, the PCM sets a DTC and the cruise control system is deactivated.