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) Service Manual: Knock Sensor (KS) Repair procedures
Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Disconnect the knock sensor connector (A). 3. Remove the intake manifold. (Refer to Engine Mechanical System - "Intake Manifold") 4. Remove the installation bolt (A), and then remove the sens ...

Hyundai Elantra AD (2016-2020) Owners Manual: System Malfunction
Check Forward Collision Avoidance Assist system When FCA is not working properly, the FCA warning light () will illuminate and the warning message will appear for a few seconds. After the message disappears, the master warning light () will illuminate. In this case, have the vehicle i ...

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