Diagnosis And Indication

Operate with ignition switch on and shift the lever to position "R".
Then it checks the system condition.
If no trouble, it generates buzzer alarm sound for 0.065 seconds. In case of system failure, buzzer alarm is generated 3 times continuously with the interval of 0.05 seconds or it does not generate.
Effective operation range is 5km/h or less for the vehicle speed.
1. Diagnosis
  Ignition switch on and shift the lever to position "R" MICOM checks the sensor condition, and generates buzzer sound for 0.3 seconds if it is O.K.
  
  Fig 1: Checking Back Warning Sensor Condition
  Courtesy of KIA MOTORS AMERICA, INC.
2. Diagnosis mode
  NOTE: Upon failure of two or more sensors, it generates alarm in the order of SL-RL-RR-SR sensor.
  
  In case of system failure, turns on the repair switch that is installed at the back warning unit then it indicates the failed point as follows.
  1. Side left sensor failure: beep-beep
  2. Rear left sensor failure: beep beep-beep beep-beep beep-
  3. Rear right sensor failure: beep beep beep-beep beep beep-beep beep beep-
  4. Side right sensor failure: beep beep beep beep-beep beep beep beep
Fig 2: Diagnosing Back Warning System Failure
Courtesy of KIA MOTORS AMERICA, INC.