Hyundai Sonata LF: Heating, Ventilation and Air Conditioning / General Information

Hyundai Sonata LF 2014-2019 Service Manual / Heating, Ventilation and Air Conditioning / General Information

Specifications

Specification

Air Conditioner

ltem		Specification
		Theta 2.4 GDI	Theta 2.0 T-GDI / Gamma 1.6 T-GDI
Compressor	Type	6SES14
	Oil type & Capacity	ND8 (PAG) OIL 80 ± 10 cc (2.82 ± 0.35 oz.)
	Pulley type	DL pulley type (A1 - PD)
	Displacement	140 cc
Air pressure transducer	Pressure values	Vdd * (0.001758 * Pressure(Psia) + 0.074126
Expansion valve	Type	Block type
Refrigerant	Type	R-134a
	Capacity	575 ± 20 g (20.2 ± 0.70 oz.)	525 ± 20 g (18.5 ± 0.70 oz.)

Blower Unit

Item		Specification
Fresh and recirculation	Operating method	Actuator
Blower	Type	Sirocco pan
	Speed step	Auto + 8 speed, 1 ~ 4speed (Manual)
	Speed control	Power mosfet (Automatic), Resistor (Manual)
Air filter	Type	Particle filter

Heater and Evaporator Unit

Item		Specification
Heater	Type	Fin & Tube type
	Heating capacity	4800-5% kcal/hr
	Mode operating method	Actuator
	Temperature operating method	Actuator
Evaporator	Temperature control type	Evaporator temperature sensor
	A/C ON/OFF [°C (°F)]	Max cooling condition	On : -6°C (21.2), Off : -8°C (17.6)
		Except above condition	On : -1.5°C (29.3), Off : -0.5°C (31.1)

Tightening Torques

Items	N.m	kgf.m	lb-ft
Compressor	20.0 ~ 32.95	2.04 ~ 3.36	14.75 ~ 24.30
Condenser - Discharge hose	3.9 ~ 5.9	0.4 ~ 0.6	2.9 ~ 4.3
Condenser - Liquid tube	3.9 ~ 5.9	0.4 ~ 0.6	2.9 ~ 4.3
Compressor - Discharge hose	8.8 ~ 13.7	0.9 ~ 1.4	6.5 ~ 10.1
Compressor - Suction hose	8.8 ~ 13.7	0.9 ~ 1.4	6.5 ~ 10.1
Expansion valve - Evaporator	8.8 ~ 13.7	0.9 ~ 1.4	6.5 ~ 10.1

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. Heater control assembly
	6. Blower speed control switch
	7. Wire harness
No air temperature control	1. Engine coolant capacity
	2. Temperature dial switch
	3. 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. Heater control assembly
	7. Evaporator temperature sensor
	8. 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. Heater control assembly
	3. Wire harness
No air inlet control	1. Recirculate and fresh switch
No air inlet control	2. Heater control assembly
No mode control	1. Heater control assembly
	2. Temperature dial switch
	3. Mode actuator
No cooling fan operation	1. Cooling fan fuse
	2. Fan motor
	3. Engine ECM
	4. Wire harness

Heating, Ventilation and Air Conditioning

Air Conditioning System

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