Sensor Connection Checking

Transmit ultrasonic wave to the sensors, boost input signal, and detect wave.

Waveform will be found, oscillating for a certain period of time.

1. Waveform for a normal sensor connection
   Fig 1: Waveform For Normal Sensor Connection

   Courtesy of KIA MOTORS AMERICA, INC.
2. Waveform for a failed sensor connection
   Fig 2: Waveform For Failed Sensor Connection

   Courtesy of KIA MOTORS AMERICA, INC.
   NOTE: Sensor connection will be checked for oscillating period of input signal 3V. If oscillating period is more than 0.8ms, it is normal.
   1. Left sensor failure : beep-beep-beep
   2. Right sensor failure : beep beep-beep beep-beep beep
   3. Rear-right sensor failure : beep beep beep-beep beep beep-beep beep beep
   4. Right side sensor failure : beep beep beep beep-beep beep beep beep-beep beep beep beep