Hyundai Accent (HC): Heating, Ventilation and Air Conditioning / Troubleshooting

Hyundai Accent (HC) (2017 - 2022) 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:
SymptomSuspected Area
No blower operationBlower fuse
Blower relay
Blower motor
Power mosfet
Blower speed control switch
Wire harness
No air temperature controlEngine coolant capacity
Heater control assembly
No compressor operationRefrigerant capacity
A/C fuse
Compressor
A/C pressure transducer
A/C switch
Evaporator temperature sensor
Wire harness
Vented air not coldRefrigerant capacity
Refrigerant pressure
Drive belt
Compressor
A/C pressure transducer
Evaporator temperature sensor
A/C switch
Heater control assembly
Wire harness
Insufficient coolingRefrigerant capacity
Drive belt
Compressor
Condenser
Expansion valve
Evaporator
Refrigerant lines
A/C pressure transducer
Heater control assembly
No engine idle-up when A/C switch ONEngine ECM
Wire harness
No air inlet controlHeater control assembly
Intake actuator
No mode controlHeater control assembly
Mode actuator or cable
No cooling fan operationCooling fan fuse
Fan motor
Engine ECM
Wire harness
Blower resister
Power mosfet

Specifications

Air Conditioning System

Other information:

Hyundai Accent (HC) (2017 - 2022) Service Manual: Blower Unit

- Component Location 1. Blower unit assembly - Components 1. Seal2. Intake duct case3. Intake actuator4. Intake door5. Intake lower case6. Blower upper case7. Blower unit pad8. Blower lower case9. Blower motor10. Air filter11. Air filter cover12. PWM Blower module - Replacement     When prying with a flat-tip screwdriver or use a prying trim tool, wrap it with protective tape, and apply protective tape around the related parts, to prevent damage.

Hyundai Accent (HC) (2017 - 2022) Service Manual: Troubleshooting

Standard Flow of Diagnostic Troubleshooting Notes With Regard To Diagnosis The phenomena listed in the following table are not abnormal.ConditionExplanation System check soundWhen starting the engine, a thudding sound can sometimes be heard coming from inside the engine compartment. This is because the system operation check is being performed.

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