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

Hyundai Sonata LF 2014-2019 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
ILL+ (TAIL)
21
Detent OUT (+)
2
Sensor REF (+5V)
22
HTD
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
Blower MAX signal
11
Driver's temperature control actuator (Feedback)
31
Blower ON signal
12
Driver's seat heat indicator (Low)
32
-
13
Driver's seat heat indicator (Mid)
33
-
14
Driver's seat heat indicator (High)
34
-
15
Passenger's seat heat indicator (Low)
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
9
Ground
2
Driver's seat vent indicator (Low)
10
-
3
Driver's seat vent indicator (Mid)
11
-
4
Driver's seat vent indicator (High)
12
Passenger's seat heat indicator (Mid)
5
Passenger's seat vent indicator (Low)
13
Passenger's seat heat indicator (High)
6
Passenger's seat vent indicator (Mid)
14
-
7
Passenger's seat vent indicator (High)
15
IGN1
8
IGN2
16
Battery (+)

Connector [C]
Pin NO
Function
Pin NO
Function
1
Low
4
Middle Low
2
Common
5
Middle High
3
Ground
6
High

Controller
...

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 ...

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Description and Operation
Description Burglar Alarm State [B/A State] B/A StateDescriptionDISARM 1. In "DISARM" state, no vehicle start inhibition. So, when door, hood, or Tailgate is opened, there is no alarm sound and flashing. 2. If the battery is disconnected while the state is not "ARM/ARMWAIT/ALARM/REAR ...

Hyundai Sonata LF 2014-2019 Owners Manual: Cruise Control will be canceled when
Depressing the brake pedal. Pressing the CANCEL switch located on the steering wheel. Pushing the CRUISE button. Both the CRUISE indicator and the SET indicator will turn OFF. Moving the shift toggle switch into N (Neutral). Decreasing the vehicle speed lower than the memory speed by 5 mph ...

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