A/T Key Interlock Solenoid

Remove the solenoid connector.
Using an ohmmeter, measure the resistance between terminals.

Fig 1: Checking A/T Key Interlock Solenoid Resistance
Courtesy of HYUNDAI MOTOR CO.

Standard resistance: 12 ~ 16ohm
Attach the positive (+) lead from the battery to terminal #2. and the negative (-) lead to terminal #1.

Fig 2: Checking A/T Key Interlock Solenoid Operation
Courtesy of HYUNDAI MOTOR CO.
Check that an operation noise can be heard from the solenoid.