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

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

Components

Connector
Pin NO
Function
Connector
Pin NO
Function
A
1
Battery (+)
A
21
IGN1
2
IGN2
22
ILL+ (TAIL)
3
ISG B+
23
Sensor ground REF (+5V)
4
Mode control actuator (Vent)
24
C_CAN High
5
Mode control actuator (Def)
25
C_CAN Low
6
Mode control actuator (Feedback)
26
HTD (Rear defog indicator)
7
Intake actuator (Fresh)
27
-
8
Intake actuator (Recirculation)
28
-
9
Intake actuator (Feedback)
29
Passenger's temperature control actuator (Cool)
10
Defogging actuator (On)
30
Passenger's temperature control actuator (Warm)
11
Defogging actuator (Off)
31
Passenger's temperature control actuator (Feedback)
12
Defogging actuator (Feedback)
32
PTC Relay 2
13
Rear defog switch
33
PTC Relay 3
14
Hazard switch
34
PTC on signal
15
Driver's temperature control actuator (Cool)
35
Detent out (-)
16
Driver'st emperature control actuator (Warm)
36
-
17
Driver's temperature control actuator (Feedback)
37
ECV +
18
-
38
ECV - (Ground)
19
Sensor ground
39
ILL- (RHEO)
20
Ground
40
Ground

Connector
Pin NO
Function
Connector
Pin NO
Function
B
1
Blower motor (+)
B
9
PAB IGN1
2
FET Drain (Feedback)
10
Clean signal
3
FET (Gate)
11
Ionizer diagnosis
4
SBR
12
AMB sensor (+)
5
Rear SBR (LH)
13
EVAP sensor (+)
6
Rear SBR (Center)
14
 Auto defogging sensor signal
7
Rear SBR (RH)
15
Photo sensor (-)_LH
8
PAB Off signal
16
Photo sensor (-)_RH

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 ...

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 Elantra AD (2016-2020) Service Manual: Rear Combination Lamp Repair procedures
Removal 1. Disconnect the negative (-) battery terminal. 2. Remove the outside rear combination lamp assembly (B) after disconnecting the connector (A). 3. Remove the bulb (A) after turning it in the counter clock-wise direction. [LED Type] [Bulb Type] 4. Disconnect the inside rear ...

Hyundai Elantra AD (2016-2020) Owners Manual: Limitations of the System
The driver must be cautious in the below situations because the system may not detect other vehicles or objects in certain circumstances: The vehicle is driven in inclement weather such as heavy rain or snow. The sensor is polluted with rain, snow, mud, etc. The rear bumper where the senso ...

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