Practice question

A customer complaints that the AC only blows air through the defroster vents, regardless of the dashboard mode selection. What is the most likely cause?

  1. A restricted AC condenser core
  2. A failed mode door actuator or a vacuum leak in the HVAC mode door vacuum circuit
  3. Worn AC compressor clutch hub plates
  4. A failed cabin blower motor resistor

Answer: B — A failed mode door actuator or a vacuum leak in the HVAC mode door vacuum circuit

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Practice more: SKM Motor Vehicle Mechanic Level 3 Practice Questions - SKM Motor Vehicle Mechanic Level 3 (Malaysia) Exam →