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 Owners Manual: Defroster
NOTICE To prevent damage to the conductors bonded to the inside surface of the rear window, never use sharp instruments or window cleaners containing abrasives to clean the window. If you want to defrost and defog the front windshield, refer to the "Windshield Defrosting and Defogging" section in ...

Hyundai Sonata LF 2014-2019 Service Manual: Canister Repair procedures
Removal 1. Turn the ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the fuel tank. (Refer to Engine Control / Fuel System - " Fuel Tank") 3. Disconnect the vent hose (A). 4. Disconnect the vapor tube quick-connector (B,C). 5. Remove installation ...