Hyundai Sonata: Controller / Heater & A/C Control Unit (Manual) Components and Components Location

Hyundai Sonata LF 2014-2019 Service Manual / Heating, Ventilation and Air Conditioning / Controller / Heater & A/C Control Unit (Manual) Components and Components Location

Components

Connector [A]

Pin NO	Function	Pin NO	Function
1	ILL+ (TAIL)	21	Detent OUT (+)
2	Sensor REF (+5V)	22	HTD
3	Mode control actuator (Vent)	23	Rear defog switch
4	Mode control actuator (Defrost)	24	C_CAN High
5	Mode control actuator (Feedback)	25	C_CAN Low
6	Intake actuator (Fresh)	26	ECV+
7	Intake actuator (Recirculation)	27	ECV- (Ground)
8	Intake actuator (Feedback)	28	AMB Sensor (+)
9	Driver's temperature control actuator (Cool)	29	EVAP Sensor (+)
10	Driver's temperature control actuator (Warm)	30	Blower MAX signal
11	Driver's temperature control actuator (Feedback)	31	Blower ON signal
12	Driver's seat heat indicator (Low)	32	-
13	Driver's seat heat indicator (Mid)	33	-
14	Driver's seat heat indicator (High)	34	-
15	Passenger's seat heat indicator (Low)	35	-
16	Driver's seat heat switch	36	-
17	Passenger's seat heat switch	37	-
18	Driver's cool switch	38	-
19	Passenger's cool switch	39	-
20	ILL- (RHEO)	40	Sensor ground

Connector [B]

Pin NO	Function	Pin NO	Function
1	Ground	9	Ground
2	Driver's seat vent indicator (Low)	10	-
3	Driver's seat vent indicator (Mid)	11	-
4	Driver's seat vent indicator (High)	12	Passenger's seat heat indicator (Mid)
5	Passenger's seat vent indicator (Low)	13	Passenger's seat heat indicator (High)
6	Passenger's seat vent indicator (Mid)	14	-
7	Passenger's seat vent indicator (High)	15	IGN1
8	IGN2	16	Battery (+)

Connector [C]

Pin NO	Function	Pin NO	Function
1	Low	4	Middle Low
2	Common	5	Middle High
3	Ground	6	High

Controller

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Heater & A/C Control Unit (Manual) Repair procedures

Replacement 1. Disconnect the negative (-) battery terminal. 2. Using a screwdriver or remover, remove the center fascia panel (A). 3. Disconnect the A/C & heater controller connectors ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Components and Components Location
Component Location 1. Windshield wiper arm & blade2. Wiper & washer switch3. Windshield washer hose & nolzzle4. Washer reservoir5. Washer motor6. Washer fluid level sensor7. Wiper motor & linkage assembly8. Wiper High/Low relay (Built - in Metal core block PCB) ...

Hyundai Sonata LF 2014-2019 Owners Manual: Warning light and message
When the Smart High Beam Assist System is not working properly, the warning message will come on for a few second. After the message disappears, the master warning light will illuminate. Take your vehicle to an authorized HYUNDAI dealer and have the system checked. CAUTION The system may not ope ...