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Home >> Hyundai >> 2016 >> Azera Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Blower System >> Power Mosfet >> Repair Procedures >> Inspection

Repair Procedures: Inspection

  1. Ignition "ON"
  2. Manually operate the control switch and measure the voltage of blower motor.
  3. Select the control switch to raise voltage until high speed.
    Fig 1: Control Switch - Circuit Diagram
    G10369864Courtesy of HYUNDAI MOTOR AMERICA

    Specification 

    VOLTAGE SPECIFICATION

    Fan Motor Voltage
    Manual
    First speed 3.4 ±0.5V
    Second speed 4.6 ±0.5V
    Third speed 5.9 ±0.5V
    Fourth speed 7.2 ±0.5V
    Fifth speed 8.3 ±0.5V
    Sixth speed 9.5 ±0.5V
    Seventh speed 11.3 ±0.5V
    eighth speed Battery

    *AUTO COOLING: Auto speed (4.5V~B+)

    *AUTO HEATING: Auto speed (4.5V~11.3V)

  4. If the measured voltage is not specification, substitute with a known-good power mosfet and check for proper operation.
  5. If the problem is corrected, replace the power mosfet.
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