Hyundai i-30: Controller / Heater & A/C Control Unit (Manual)

Hyundai i30 (PD) 2018-2025 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	Low	4	Middle Low
2	Common	5	Middle High
3	Ground	6	High

Connector [B]

Pin NO	Function	Pin NO	Function
1	Battery (+)	21	IGN2
2	ISG B+	22	IGN1
3	ILL+ (TAIL)	23	-
4	Sensor REF (+5V)	24	-
5	Mode actuator feedback	25	-
6	Temperature actuator feedback	26	-
7	Intake actuator feedback	27	MAX Blower ON Signal
8	EVAP Sensor (+)	28	PTC Relay 3
9	AMB Sensor (+)	29	PTC Relay 2
10	Mode actuator (Vent)	30	PTC on signal
11	Mode actuator (Defrost)	31	Detent OUT (-)
12	Temperature actuator (Cool)	32	-
13	Temperature actuator (Warm)	33	C_CAN High
14	Intake actuator (Fresh Air)	34	C_CAN Low
15	Intake actuator (Recirculated Air)	35	-
16	HTD (Rear defog indicator)	36	ECV +
17	Rear defog switch	37	ECV- (Ground)
18	-	38	Sensor ground
19	Blower ON signal to common	39	Ground
20	ILL- (RHEO)	40	Ground

Repair procedures

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the glove box upper cover assembly. (Refer to Crash Pad - "Glove Box Upper Cover Assembly")

3.	Remove the crash pad center lower cover (A) after loosening the mounting screws.

4.	After loosening the mounting screws, remove the A/C & heater controller unit (A).

5.	Disconnect the connector (A) and the air hose (B).

To install, reverse the removal procedure.

•	Make sure the connector are connected in properly.

•	Replace any damaged clips (or pin-type retainers).

Controller

Heater & A/C Control Unit (DATC)

Components and components location Components Connector [A] Pin NO Function Pin NO Function 1 Battery (+) 21 IGN2 2 ISG B+ 22 IGN1 3 ILL+ (TAIL) 23 Blower motor (+) 4 Sensor REF (+5V) 24 Photo sensor_LH 5 Mode actuator feedback 25 Photo sensor_RH 6 Temperature actuator feedback 26 - 7 Intake actuator feedback 27 - 8 EVAP Sensor (+) 28 PTC Relay 3 9 AMB Sensor (+) 29 PTC Relay 2 10 Mode actuator (Vent) 30 PTC on signal 11 Mode actuator (Defrost) 31 Detent OUT (-) 12 Temperature actuator (Cool) 32 - 13 Temperature actuator (Warm) 33 C_CAN High 14 Intake actuator (Fresh Air) 34 C_CAN Low 15 Intake actuator (Recirculated Air) 35 Power mosfet (Drain feed back) 16 HTD (Rear defog indicator) 36 Power mosfet (Gate) 17 Rear defog switch 37 ECV + 18 Clean signal 38 ECV- (Ground) 19 Ionizer diagnosis 39 Sensor ground 20 ILL- (RHEO) 40 Ground Connector [B] Pin NO Function Pin NO Function 1 Passenger's temperature control actuator (Feedback) 9 - 2 Passenger's temperature control actuator (Cool) 10 Duct sensor (+)_Vent 3 Passenger's temperature control actuator (Warm) 11 Duct sensor (-)_Floor 4 Auto defogging (Feedback) 12 Auto defogging sensor signal 5 Auto defogging (Open) 13 - 6 Auto defogging (Off) 14 - 7 - 15 - 8 - 16 Ground Repair procedures Self Diagnosis 1...

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