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Hyundai Equus Manuals

Hyundai Equus: Troubleshooting - General Information - Heating, Ventilation and Air Conditioning - Hyundai Equus VI 2009-2025 Service ManualHyundai Equus: Troubleshooting

Second generation VI (2009–2025) / Hyundai Equus VI 2009-2025 Service Manual / Heating, Ventilation and Air Conditioning / General Information / 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
2. Heater control assembly
No compressor operation
1. Refrigerant capacity
2. A/C fuse
3. Compressor
4. A/C pressure transducer
5. A/C switch
6. Evaporator temperature sensor
7. Wire harness
Vented air not cold
1. Refrigerant capacity
2. Refrigerant pressure
3. Drive belt
4. Compressor
5. A/C pressure transducer
6. Evaporator temperature sensor
7. A/C switch
8. Heater control assembly
9. Wire harness
Insufficient cooling
1. Refrigerant capacity
2. Drive belt
3. Compressor
4. Condenser
5. Expansion valve
6. Evaporator
7. Refrigerant lines
8. A/C pressure transducer
9. Heater control assembly
No engine idle-up when A/C switch ON
1. Engine ECM
2. Wire harness
No air inlet control
1. Heater control assembly
No mode control
1. Heater control assembly
2. Mode actuator
No cooling fan operation
1. Cooling fan fuse
2. Fan motor
3. Engine ECM
4. Wire harness

    Special Service Tools
    Special Service Tools Tool (Number and name)IllustrationUse09977-3R000Disc & hub assembly bolt removerRemoval and installation of disc & hub assembly bolt ...

    Air Conditioning System
    ...

    See also:

    Heater Control Unit Repair procedures
    Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the cowl side trim. (Refer to Body - "Cowl Side Trim") 3. To remove the crash pad under cover [RH] (A), press both ...

    Rear Differential Carrier Repair procedures
    Replacement 1. Drain off oil from Rear differential carrier. 2. Remove the propeller shaft. (Refer to Propeller Shaft Assembly - "Propeller Shaft") 3. Remove the rear drive shaft. (Re ...

    Specifications
    Specifications Front air strut ItemsSpecificationAir spring volume at design position1.78xMaximum other bellow diameter118 mmBurst pressure31.5 barMinimum operating temperature-40°CMaximum operat ...

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