Idle Speed/Throttle Actuator - Electronic: Description and Operation

IDLE SPEED CONTROL ACTUATOR

The idle speed control actuator is the double coil type and has two coils. The two coils are driven by separate driver stages in the ECM. 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 arrange, where the idle speed, actuator is inserted in.