Kia Forte: Heater & A/C Control Unit (DATC) Component

Connector Pin Function

Connector	No.	Description	Connector	No.	Description
A	1	Illumination (+) (Tail)	A	25	Humidity (PVM)
	2	Sensor REF (+5V)		26	Ambient sensor (+)
	3	Defog actuator (Open)		27	In-car sensor (+)
	4	Defog actuator (Close)		28	Evaporator sensor (+)
	5	Mode actuator (Vent)		29	ECV (+)
	6	Mode actuator (Defrost)		30	ECV (-)
	7	Mode actuator feedback		31	Photo sensor (-) － Left
	8	Intake actuator (Fresh)		32	Photo sensor (-) － Right
	9	Intake actuator (Recirculation)		33	HTD
	10	Intake actuator feedback		34	Rear defog switch
	11	Temperature actuator (Cool) - Driver		35	K-Line
	12	Temperature actuator (Warm) - Driver		36	PTC relay (Gasoline PTC only)
	13	Temperature actuator feedback - Driver		37	-
	14	Temperature actuator (Cool) - Passenger		38	ISG DC
	15	Temperature actuator (Warm) - Passenger		39	-
	16	Temperature actuator feedback - Passenger		40	Sensor ground
	17	C_CAN (High)	B	1	Ground
	18	C_CAN (Low)		2	IGN 2
	19	Detent OUT (+)		3	Blower motor (+)
	20	Illumination (-) (Rheostat)		4	Ground
	21	Ion signal		5	FET (Gate)
	22	Clean signal		6	FET (Drain feedback)
	23	Ionizer diagnosis		7	IGN 1
	24	Defog actuator feedback		8	Battery (+)

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