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Home >> Hyundai >> 1994 >> Excel Base, Standard >> Repair and Diagnosis (Single Page) >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Heater System >> Testing >> Fresh Air/Recirculated Air Control Button
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Fresh Air/Recirculated Air Control Button

Connect vacuum tester to Black hose of fresh air/recirculated air control button. With button in fresh air position, vacuum should exist at Black hose. With button in recirculated air position, vacuum should exist at Black and White hoses. Repair as necessary.