Idle Speed Control Actuator (ISA): Notes

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 ECU. 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, where the idle speed control actuator is inserted.