Overload Protection Switch

Excessive compressor pressures may damage engine by inducing an overload, and are normally prevented by pressure sensor and wastegate actuator. In case of failure of that system, a second overload protection switch is activated.

The switch receives pressure input from the intake manifold. When pressure reaches 10 psi (.70 kg/cm² ) the pressure switch will open a ground circuit for fuel pump relay, momentarily stopping fuel pump flow, resulting in a reduced compressor pressure.