Idle Speed/Throttle Actuator - Electronic: Description and Operation

The idle speed actuator is of the double coil type and has two coil, the two coils are driven by separate driver stages in the Engine Control Module (ECM) come cone coil receives the inverse signal of the other, Depending on the pulse duty factor the equilibrium of the magnetic forces of the two coils will result in different angles of the motor. In parallel to the throttle valve a bypass hose line is arranged, in which the idle speed actuator is inserted.