Kia Optima Hybrid Owner's Manual Quiz
Heating, Ventilation, and Air Conditioning

Troubleshooting

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 4Engine Mechanical System — 50Engine Electrical System — 20Emission Control System — 30Engine Control System/Fuel System — 84Automatic Transmission — 98Drive Shaft and Axle — 15Suspension System — 36Steering — 12Restraints — 50Brake System — 38Body (Interior and Exterior) — 54Body Electrical System — 233Heating, Ventilation, and Air Conditioning — 57
38steps
~228min
4/5difficulty
Done 0 of 38

Troubleshooting

Symptom Table

Before replacing or repairing air conditioning components, first determine whether the malfunction is related to refrigerant charge, airflow, or the compressor. Use the table below to find the cause of the problem. The numbers indicate the priority of the probable cause. Check each part in order. Replace these parts if necessary. After troubleshooting, check the entire system to make sure it operates satisfactorily. Standard:
Symptom Suspect area
No Fan Operation
  1. Fan Fuse
  2. Blower motor
  3. PWM Blower Module
  4. Fan Speed Switch
  5. Wiring Harness
No Air Temperature Control
  1. Engine Coolant Level
  2. Heater Control Unit
Compressor Does Not Operate
  1. Cooling Capacity
  2. A/C Fuse
  3. Compressor
  4. A/C Pressure Sensor
  5. A/C Switch
  6. Evaporator Temperature Sensor
  7. Wiring Harness
  8. Fan
  9. HEV system
A/C does not blow cold air
  1. Cooling Capacity
  2. Refrigerant Pressure
  3. Compressor
  4. A/C Pressure Sensor
  5. Evaporator temperature sensor.
  6. A/C switch.
  7. Heater Control Unit
  8. Wiring Harness
Insufficient Cooling
  1. Cooling Capacity
  2. Compressor.
  3. Condenser.
  4. Expansion valve.
  5. Evaporator.
  6. Refrigerant Lines
  7. A/C Pressure Sensor
  8. Heater Control Unit
No Air Flow Control
  1. Heater Control Unit
No Mode Control
  1. Heater Control Unit
  2. Mode Actuator
Cooling Fan Does Not Operate
  1. Cooling Fan Fuse
  2. Blower motor
  3. Engine ECM
  4. Wiring Harness

Test yourself

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