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

Fig 2: Receiver Communication Line Check - Screen Display
Courtesy of HYUNDAI MOTOR AMERICA
Check the serial communication line with a GDS.
If the Smart Key runs normal, the communication of Smart Key Unit, exterior receiver are normal.
If the Smart Key runs abnormal, check the following parts.
1. Disconnection or no response of the exterior receiver communication line.
2. The exterior receiver communication line disconnection and ground connection.