Serial Communication Status Check

WARNING: This page is about a different car, the 2016 Hyundai Elantra GT and 2015 Hyundai Elantra GT. However, it is still accessible from the selected car via links, so may be relevant.

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

Fig 2: Screen Display - Receiver Communication Line Check
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.