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

Hyundai Elantra AD (2016-2020) Service Manual / Heating, Ventilation and Air Conditioning / Controller / Heater & A/C Control Unit (DATC) Components and Components Location

Components

Connector	Pin NO	Function	Connector	Pin NO	Function
A	1	Battery (+)	A	21	IGN1
	2	IGN2		22	ILL+ (TAIL)
	3	ISG B+		23	Sensor ground REF (+5V)
	4	Mode control actuator (Vent)		24	C_CAN High
	5	Mode control actuator (Def)		25	C_CAN Low
	6	Mode control actuator (Feedback)		26	HTD (Rear defog indicator)
	7	Intake actuator (Fresh)		27	-
	8	Intake actuator (Recirculation)		28	-
	9	Intake actuator (Feedback)		29	Passenger's temperature control actuator (Cool)
	10	Defogging actuator (On)		30	Passenger's temperature control actuator (Warm)
	11	Defogging actuator (Off)		31	Passenger's temperature control actuator (Feedback)
	12	Defogging actuator (Feedback)		32	PTC Relay 2
	13	Rear defog switch		33	PTC Relay 3
	14	Hazard switch		34	PTC on signal
	15	Driver's temperature control actuator (Cool)		35	Detent out (-)
	16	Driver'st emperature control actuator (Warm)		36	-
	17	Driver's temperature control actuator (Feedback)		37	ECV +
	18	-		38	ECV - (Ground)
	19	Sensor ground		39	ILL- (RHEO)
	20	Ground		40	Ground

Connector	Pin NO	Function	Connector	Pin NO	Function
B	1	Blower motor (+)	B	9	PAB IGN1
	2	FET Drain (Feedback)		10	Clean signal
	3	FET (Gate)		11	Ionizer diagnosis
	4	SBR		12	AMB sensor (+)
	5	Rear SBR (LH)		13	EVAP sensor (+)
	6	Rear SBR (Center)		14	Auto defogging sensor signal
	7	Rear SBR (RH)		15	Photo sensor (-)_LH
	8	PAB Off signal		16	Photo sensor (-)_RH

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

Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the glove box upper cover assembly. (Refer to Body - "Glove Box Upper Cover Assembly") 3. Loosen the mounting screw ...

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 0.5 seconds interval on the t ...

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