Hyundai Palisade: Heating,Ventilation And Air Conditioning / Troubleshooting

Hyundai Palisade (LX2) 2020-2025 Service Manual / Heating,Ventilation And Air Conditioning / Troubleshooting

Troubleshooting

Problem Symptoms Table

Before replacing or repairing air conditioning components, first determine if the malfunction is due to the refrigerant charge, air flow or compressor.

Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely cause of the problem. Check each part in order. If necessary, replace these parts.

After correcting the malfunction, check the complete system to ensure that performance is satisfactory.

Standard:

Symptom	Suspected Area
No blower operation	1. Blower fuse
	2. Blower relay
	3. Blower motor
	4. Power mosfet
	5. Blower speed control switch
	6. Wire harness
No air temperature control	1. Engine coolant capacity
No air temperature control	2. Heater control assembly
No compressor operation	1. Refrigerant capacity
	2. A/C fuse
	3. Clutch limiter
	4. Compressor
	5. A/C pressure transducer
	6. A/C switch
	7. Evaporator temperature sensor
	8. Wire harness
Vented air not cold	1. Refrigerant capacity
	2. Refrigerant pressure
	3. Drive belt
	4. Clutch limiter
	5. Compressor
	6. A/C pressure transducer
	7. Evaporator temperature sensor
	8. A/C switch
	9. Heater control assembly
	10. Wire harness
Insufficient cooling	1. Refrigerant capacity
	2. Drive belt
	3. Clutch limiter
	4. Compressor
	5. Condenser
	6. Expansion valve
	7. Evaporator
	8. Refrigerant lines
	9. A/C pressure transducer
	10. Heater control assembly
No engine idle-up when A/C switch ON	1. Engine ECM
No engine idle-up when A/C switch ON	2. Wire harness
No air inlet control	1. Heater control assembly
No mode control	1. Heater control assembly
No mode control	2. Mode actuator
No cooling fan operation	1. Cooling fan fuse
	2. Fan motor
	3. Engine ECM
	4. Wire harness

Special service tools

Air conditioning System

Other information:

Hyundai Palisade (LX2) 2020-2025 Service Manual: Components and components location

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