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: A/C Pressure Transducer

- Description The A/C Pressure Transducer (APT) converts the pressure value of high pressure line into voltage value after measuring it. By converted voltage value, engine ECU controls the cooling fan by operating it high speed or low speed. Engine ECU stops the operation of the compressor when the temperature of refrigerant line is very high or very low irregularly to optimize air conditioning system.

Hyundai Accent (HC) (2017 - 2022) Service Manual: Description and Operation

- Description Burglar Alarm State [B/A State] B/A StateDescription DISARM1) In "DISARM" state, no vehicle start inhibition. So, when door, hood, or Tailgate is opened, there is no alarm sound and flashing. 2) If the battery is disconnected while the state is not "ARM/ARMWAIT/ALARM/REARM", B/A state is set to "DISARM" state. 3)In "DISARM" state, security indicator keeps blinking.

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