Hyundai Venue: Controller / Heater & A/C Control Unit (DATC). Repair procedures

Hyundai Venue (QX) (2020-2022) Service Manual / Heating, Ventilation and Air Conditioning / Controller / Heater & A/C Control Unit (DATC). Repair procedures

Self Diagnosis
1.
Self-diagnosis process.

Hyundai Venue. Heater & A/C Control Unit (DATC). Repair procedures

Hyundai Venue. Heater & A/C Control Unit (DATC). Repair procedures   
When operating the self-diagnostics, the below fault(self-diagnostics code) will blink at 0.5 seconds interval on the temperature display settings(driver's side only) and the remaining symbols are OFF .
2.
Fault code display
(1)
Continuance operation : DTC code.

Hyundai Venue. Heater & A/C Control Unit (DATC). Repair procedures

(2)
Continuance operation : DTC code.

Hyundai Venue. Heater & A/C Control Unit (DATC). Repair procedures

(3)
STEP operation.
A. Nomal or one fault code is same as a continuance operation.
B. DTC code.

Hyundai Venue. Heater & A/C Control Unit (DATC). Repair procedures

3.
If fault codes are displayed during the check, Inspect malfunction causes by referring to fault codes.
Display
Fail description
0
Normal
11
Incar sensor OPEN
12
Incar sensor SHORT
13
Ambient sensor OPEN
14
Ambient sensor SHORT
17
Evaporator sensor OPEN
18
Evaporator sensor SHORT
19
Driver temp door potentionmeter OPEN or SHORT
20
Driver temp door potentionmeter Error
21
Mode door potentionmeter OPEN or SHORT
22
Mode door potentionmeter Error
25
Intake door potentionmeter OPEN or SHORT
26
Intake door potentionmeter Error
31
Auto defog sensor (OPEN)
Auto defog sensor (SHORT)
32
Passenger temp door potensionmeter OPEN or SHORT
40
Auto defogging actuator OPEN or SHORT
41
Defog door potentiometer Error
44
Cluster anion generator Error
45
APT CAN Signal Error
47
RPM CAN Signal Error
48
Vehicle speed CAN Signal Error
49
Engine coolant temprature CAN Signal Error

4.
Fail safe
No
Item
Fault
Fail Safe
1
Incar sensor
Open or Short
Control with the value of 25°C (77.0°F)
2
Amblent sensor
Open or Short
Control with the value of 20°C (67°F)
3
Evaporator sensor
Open or Short
Control with the value of -2°C (28.4°F)
4
Mode door potentiometer
Open or Short
Fix vent position, while selecting vent mode.
Fix defrost position, while selecting all except vent mode.
Fix vent position, while selecting IG ON → OFF.
Fix defrost position, while selecting floor purge.
5
Temperature door potentiometer (MTC)
Open or Short
If temperature setting 1 - 7 step, fix at maximum cooling position.
If temperature setting 8 - 15 step, fix at maximum heating position.
6
Temperature door potentiometer (DATC)
Open or Short
If temperature setting 17°C(62.6°F) - 24.5°C(76.1°F), fix at maximum cooling position.
If temperature setting 25°C(77°F) - 32°C(89.6°F), fix at maximum heating position.
7
Intake door potentiometer
Open or Short
Fix vent position, while selecting vent mode.
Fix defrost position, while selecting all except vent mode.

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the console upper front garnish.
(Refer to Floor Console - "Floor Console Assembly")
3.
Remove the center fascia panel.
(Refer to Body (Interior and Exterior) - "Center Fascia Panel")
4.
Remove the audio and AVN head unit.
(Refer to Body Electrical System - "Audio Unit")
5.
Loosen the mounting screws and remove the A/C & heater controller unit (A).

Hyundai Venue. Heater & A/C Control Unit (DATC). Repair procedures

6.
Separate the A/C & heater controller unit connector (A) and hose (B).

Hyundai Venue. Heater & A/C Control Unit (DATC). Repair procedures

7.
To install, reverse the removal procedure.
Hyundai Venue. Heater & A/C Control Unit (DATC). Repair procedures   
Make sure the connector is connected in properly.
Replace any damaged clips.

    Heater & A/C Control Unit (DATC). Components and components location

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    Advanced Driver Assistance System (ADAS)

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