Serial Communication Status Check

Connect the cable of GDS to the data link connector in driver side crash pad lower panel.
Select the "Serial Communication Line Check".

Fig 1: GDS Screen Display - Serial Communication Line Check
Courtesy of HYUNDAI MOTOR CO.
After IG ON, select the "Receiver Communication Line Check".

Fig 2: GDS Screen Display - Receiver Communication Line Check
Courtesy of HYUNDAI MOTOR CO.
Check the serial communication line with a GDS.
If the receiver communication line runs normal, check the "ESCL Communication Line Check".

Fig 3: GDS Screen Display - ESCL Communication Line Check
Courtesy of HYUNDAI MOTOR CO.
If the smart key runs normal, the communication of smart key unit, exterior receiver and ESCL are normal.
If the smart key runs abnormal, check the following items.
1. Disconnection or no response of the exterior receiver communication line.
2. The exterior receiver communication line disconnection and ground connection.
3. The ESCL disconnection or no response
4. The ESCL disconnection and ground connection