System Main Function

WARNING: This page is about a different car, the 2017 Hyundai Sonata and 2016 Hyundai Sonata. However, it is still accessible from the selected car via links, so may be relevant.

Switching of ACC/IGN1/IGN2 terminals.
Control of the STARTER relay BAT line (high side) based on communication with EMS ECU.
Management of the Immobilizer function.
Management of BES warning function.