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

Hyundai Sonata LF 2014-2019 Service Manual / Heating, Ventilation and Air Conditioning / Controller / Heater & A/C Control Unit (DATC) 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 (Rear defog indicator)
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	Photo sensor (-)_LH
11	Driver's temperature control actuator (Feedback)	31	Photo sensor (-)_RH
12	Passenger's temperature control actuator (Cool)	32	-
13	Passenger's temperature control actuator (Warm)	33	-
14	Passenger's temperature control actuator (Feedback)	34	-
15	No K-line	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	17	Ground
2	-	18	-
3	-	19	Driver's seat heat indicator (Low)
4	-	20	Driver's seat heat indicator (Mid)
5	-	21	Driver's seat heat indicator (High)
6	FET (Gate)	22	Passenger's seat heat indicator (Low)
7	FET Drain (Feedback)	23	Passenger's seat heat indicator (Mid)
8	-	24	Passenger's seat heat indicator (High)
9	-	25	Driver's seat cool indicator (Low)
10	Steering wheel heat switch	26	Driver's seat cool indicator (Mid)
11	Steering wheel heat indicator	27	Driver's seat cool indicator (High)
12	Blower motor (+)	28	Passenger's seat cool indicator (Low)
13	-	29	Passenger's seat cool indicator (Mid)
14	-	30	Passenger's seat cool indicator (High)
15	IGN1	31	-
16	IGN2	32	Battery (+)

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 (A)...

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

Self Diagnosis 1. Self-diagnosis process. • When operating the self-diagnostics, the below fault (self-diagnostics code) will blink at 0...

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