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: Height Adjust Repair procedures
Replacement 1. Remove the front seat belt upper anchor. (Refer to Front Seat Belt - "Front Seat Belt Retractor") 2. After loosening the mounting bolts, then remove the height adjust (A). Tightening torque : 39.2 ~ 53.9 N.m (4.0 ~ 5.5kgf.m, 28.9 ~ 39.8 lb-ft) 3. Install in the rev ...

Hyundai Sonata LF 2014-2019 Service Manual: Emergency Fastening Device (EFD) Repair procedures
Removal 1. Disconnect the battery negative cable and wait for at least 3 minutes before beginning work. 2. Remove the front seat. (Refer to Body - "Front Seat Assembly") 3. Remove the rear seat. (Refer to Body - "Rear Seat Assembly") 4. Remove the front anchor seat belt (A). ...

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