Kia Cadenza VG Owner's Manual Quiz
Heating, Ventilation, and Air Conditioning

Power MOSFET Repair Procedures

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 15Engine Mechanical System — 95Engine Electrical System — 54Emission Control System — 24Engine Control System/Fuel System — 115Automatic Transmission — 91Drive Shaft and Axle — 13Suspension System — 35Steering — 19Restraints — 46Brake System — 43Body (Interior and Exterior) — 51Body Electrical System — 245Heating, Ventilation, and Air Conditioning — 56
10steps
~60min
3/5difficulty
Done 0 of 10

Inspection

  1. Ignition switch ON
  2. Manually operate the control switch and measure the voltage of the blower motor.
  3. Select the control switch to raise the voltage to high speed.
    Specification
    Fan Blower Motor Voltage
    Manual
    First Speed 3.8 ± 0.5 V
    Second Speed 5.0 ± 0.5 V
    Third Speed 6.2 ± 0.5 V
    Fourth Speed 7.4 ± 0.5 V
    Fifth Speed 8.6 ± 0.5 V
    Sixth Speed 9.8 ± 0.5 V
    7th Speed 11.0 ± 0.5 V
    8th speed Battery

    *AUTO COOL: Automatic speed (4.5 V to B+) * AUTO HEAT: Automatic speed (4.5 to 11.0 V)
  4. If the measured voltage does not meet the specification, replace the power MOSFET with a known good power MOSFET and check for proper operation.
  5. If the problem is resolved, replace the power MOSFET.

Replacement

  1. Disconnect the negative (-) battery terminal.
  2. Remove the lower airbag cover (A) and disconnect the connector (B).
  3. Remove the shower duct (A).
  4. Disconnect the power MOSFET connector (A), then remove the power MOSFET (B) after loosening the mounting screws.
  5. Installation is the reverse of removal.

Test yourself

A quick Kia Cadenza VG Owner's Manual quiz: every answer comes with an explanation and a link to the manual page.