Impreza WRX F4-2.0L DOHC Turbo (2004)
OPERATION
As the driven key rotates, the magnet turns causing the magnetic field of the Hall IC to change. The Hall IC generates a signal that corresponds to a
change in the magnetic field.
One turn of the driven key in the speed sensor sends 4 pulses to the combination meter, engine control module and cruise control module.
