Vehicle Speed Sensor Check

Remove the vehicle speed sensor and connect a 3~10 KΩ resistance as shown in Fig 1.
Turn the shaft of the vehicle speed sensor and check that there is voltage between terminals 1~2 (1 turn = 4 pulses).

Fig 1: Removing Vehicle Speed Sensor And Connecting A 3~10 KΩ Resistance
Courtesy of HYUNDAI MOTOR CO.