Hyundai Sonata: 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 ...

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 ...

Other information:

Hyundai Sonata LF 2014-2019 Owners Manual: Air intake control
This button is used to select the outside (fresh) air position or recirculated air position. Recirculated air position The indicator light on the button illuminates when the recirculated air position is selected. With the recirculated air position selected, air from the passenger compartment wi ...

Hyundai Sonata LF 2014-2019 Service Manual: Starter Relay Repair procedures
Inspection 1. Turn ignition switch OFF and disconnect the negative (-) battery cable. 2. Remove the fuse box cover. 3. Remove the starter relay (A). 4. Using an ohmmeter, check that there is continuity between each terminal. TerminalContinuity30 - 87NO85 - 86YES 5. Apply 12V ...