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

Hyundai Elantra AD (2016-2020) Service Manual / Heating, Ventilation and Air Conditioning / Controller / Heater & A/C Control Unit (Manual) Components and Components Location

Components

Connector
Pin NO
Function
Connector
Pin NO
Function
A
1
Low
B
18
ILL- (RHEO)
2
Common
19
Sensor ground
3
Ground
20
Ground
4
Middle Low
21
Battery (+)
5
Middle High
22
ISG DC
6
High
23
ISG B+
B
1
IGN2
24
ILL+ (TAIL)
2
PAB IGN1
25
Sensor REF (+5V)
3
HTD (Rear defog indicator)
26
EVAP sensor (+)
4
Detent Out (-)
27
AMB sensor (+)
5
PTC Relay 2
28
Mode control actuator (Feedback)
6
PTC Relay 3
29
Temperature control actuator (Feedback)
7
PTC on signal
30
Intake actuator (Feedback)
8
PAB Off signal
31
Mode control actuator (Vent)
9
SBR
32
Mode control actuator (Def)
10
Rear SBR [LH]
33
Temperature control actuator (Cool)
11
Rear SBR [Center]
34
Temperature control actuator (Warm)
12
Rear SBR [RH]
35
Intake actuator (Fresh)
13
ECV+
36
Intake actuator (Recirculation)
14
ECV- (Ground)
37
C_CAN High
15
Max blower on signal
38
C_CAN Low
16
Rear defogging swich (On)
39
Blower common signal
17
Hazard signal
40
Ground

Controller
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Heater & A/C Control Unit (Manual) Repair procedures
Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the glove box upper cover assembly. (Refer to Body - "Glove Box Upper Cover Assembly") 3. Loosen the mounting screw ...

Other information:

Hyundai Elantra AD (2016-2020) Owners Manual: Explanation of Scheduled Maintenance Items
Engine Oil and Filter The engine oil and filter should be changed at the intervals specified in the maintenance schedule. If the car is being driven in severe conditions, more frequent oil and filter changes are required. Drive Belts Inspect all drive belts for evidence of cuts, cracks, exces ...

Hyundai Elantra AD (2016-2020) Owners Manual: High Mounted Stop Light Replacement
1. Open the trunk. 2. Remove the socket by turning it counterclockwise until the tabs on the socket align with the slots. 3. Remove the bulb from the socket by pressing it in and rotating it counterclockwise until the tabs on the bulb align with the slots in the socket. Pull the bulb out ...

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