Data Flow

Fig 1: Key Interlock Control Communication Diagram

Courtesy of HYUNDAI MOTOR AMERICA

Key solenoid to the output of the ON KEY to make the subject does not fall. (If IGN1 ON or ACC subject to the key Interlock switch input is OFF.)
In addition to the above conditions, the KEY OFF key solenoid output to fall out, to make conditions.
Key solenoid output OFF -> ON operation, 0.9sec ~ 1.5sec for the 7 - 10V and the behavior, then the voltage 6 - 9V to maintain.

Fig 2: Key Interlock Control Timing Mode Pattern
Courtesy of HYUNDAI MOTOR AMERICA

T1: 0.9 ~ 1.5sec