Hyundai Elantra (CN7): Heating, Ventilation and Air Conditioning / Troubleshooting

Hyundai Elantra (CN7) 2021-2026 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
Blower fuse
Blower relay
Blower motor
Power mosfet
Blower speed control switch
Wire harness
No air temperature control
Engine coolant capacity
Heater control assembly
No compressor operation
Refrigerant capacity
A/C fuse
Compressor
A/C pressure transducer
A/C switch
Evaporator temperature sensor
Wire harness
Vented air not cold
Refrigerant capacity
Refrigerant pressure
Drive belt
Compressor
A/C pressure transducer
Evaporator temperature sensor
A/C switch
Heater control assembly
Wire harness
Insufficient cooling
Refrigerant 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 ON
Engine ECM
Wire harness
No air inlet control
Heater control assembly
No mode control
Heater control assembly
Mode actuator
No cooling fan operation
Cooling fan fuse
Fan motor
Engine ECM
Wire harness

    SpecificationAir Conditioner Item Specification CompressorTypeGamma 1.6 MPI, Gasoline 2.0 NU MPI, Gasoline 1.

    Other information:

    Hyundai Elantra (CN7) 2021-2026 Service Manual: License Lamps

    Repair procedures Removal1.Disconnect the negative (-) battery terminal.2.Push the lock pin (B) and remove the license lamp (A).3.Disconnect the license lamp connector (A).4.Replace the bulb (A).Installation1.Connect the license lamp connector.2.Install the license lamp.

    Hyundai Elantra (CN7) 2021-2026 Service Manual: General safety information and caution

    Instructions (R-134a)When Handling Refrigerant1.R-134a liquid refrigerant is highly volatile. A drop on the skin of your hand could result in localized frostbite. When handling the refrigerant, be sure to wear gloves. 2.It is standard practice to wear goggles or glasses to protect your eyes, and gloves to protect your hands.

    Categories

     
    Copyright В© 2026 www.helantra7.com - 0.0133