6. Check ISCA For Normal Operation

1. Remove ISCA from throttle body and check for blockage and sticking.
2. Connect terminal 2 of the ISCA connector to a 12V power supply.

   One at a time, momentarily ground terminal 1 of the opening coil and terminal 3 of the closing coil while verifying that the valve closes when the closing coil is grounded and that the valve opens when opening coil is grounded.

3. Repeat several times to ensure reliability.
   NOTE: While ISCA is removed, inspect the throttle body for obstructions in the idle circuit ports. Repair or replace it.
   Fig 1: Checking ISCA Operation

   Courtesy of HYUNDAI MOTOR CO.

Is ISCA working properly? 

Yes: Go to next step.

No: Replace ISCA.