Auto Light Switch: Inspection

Multifunction switch operates head lamps and wiper by communicating with BCM through LIN communication.
Check BCM input/output value of each position of multifunction switch when you inspect the module whether faulty or not.
Select model and BCM menu.

Fig 1: Diagnosis Function Screen Display - Body Control Module
Courtesy of HYUNDAI MOTOR CO.

Fig 2: Diagnosis Function Screen Display - Body Control Module
Courtesy of HYUNDAI MOTOR CO.
Select "Current data" and wiper. Check auto light & wiper value.

Fig 3: Diagnosis Function Screen Display - Current Data
Courtesy of HYUNDAI MOTOR CO.
Check input/output value of auto light.

Fig 4: Auto Light - Screen Display
Courtesy of HYUNDAI MOTOR CO.