Hyundai Creta: Controller / Heater & A/C Control Unit (DATC)
Components and components location

Connector [A]
Pin NO
|
Function
|
Pin NO
|
Function
|
1
|
Battery (+)
|
21
|
IGN1
|
2
|
IGN2
|
22
|
ILL+ (TAIL)
|
3
|
Detent Out (-)
|
23
|
EVAP Sensor (+)
|
4
|
Sensor REF (+5V)
|
24
|
AMB Sensor (+)
|
5
|
Mode actuator feedback
|
25
|
-
|
6
|
Mode actuator (Vent)
|
26
|
Photo sensor (-)
|
7
|
Mode actuator (Defrost)
|
27
|
Blower motor (+)
|
8
|
Temperature actuator feedback
|
28
|
Power mosfet (Gate)
|
9
|
Temperature actuator (Cool)
|
29
|
Power mosfet (Drain feed back)
|
10
|
Temperature actuator (Warm)
|
30
|
HTD (Rear defog indicator)
|
11
|
Intake actuator feedback
|
31
|
Rear defog switch
|
12
|
Intake actuator (Fresh Air)
|
32
|
ADS Signal
|
13
|
Intake actuator (Recirculated Air)
|
33
|
-
|
14
|
Defogging actuator feedback
|
34
|
C_CAN High
|
15
|
Defogging actuator (Open)
|
35
|
C_CAN Low
|
16
|
Defogging actuator (Close)
|
36
|
ECV +
|
17
|
-
|
37
|
ECV- (Ground)
|
18
|
Cleean signal
|
38
|
ILL- (RHEO)
|
19
|
Ionizer diagnosis
|
39
|
Sensor ground
|
20
|
Ground
|
40
|
Ground
|
Repair procedures
1. |
Self-diagnosis process.

•
|
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.

|
(2) |
Continuance operation : DTC code.

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

|
|
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
|
23
|
Auto defog sensor open
|
24
|
Auto defog sensor short
|
25
|
Intake door potentionmeter OPEN or SHORT
|
26
|
Intake door potentionmeter Error
|
43
|
Defog door potentionmeter open or short
|
44
|
Defog door potentionmeter error
|
45
|
APT CAN Signal Error
|
47
|
RPM CAN Signal Error
|
48
|
Vehicle speed CAN Signal Error
|
49
|
Engine coolant temprature CAN Signal Error
|
50
|
Cluster ionizer fault
|
71
|
ECV Fault
|
|
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 (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.
|
6
|
Intake door potentiometer
|
Open or Short
|
Fix FRE position, while selecting FRE mode.
Fix REC position, while selecting REC mode.
|
7
|
Engine RPM
|
FFh or NO reception
|
Control with the value of 0 RPM
|
8
|
Vehicle speed
|
FFh or NO reception
|
Control with the value of 0 km/h
|
9
|
Engine coolant temperature
|
FFh or NO reception
|
Control with the value of - 2 °C(28.4 °F)
|
10
|
APS
|
FFh or NO reception
|
Control with the value of 0%
|
11
|
R-TQACNAPVC
(Max Torque limitation of A/C Compressor)
|
FFh or NO reception
|
A/C OFF (Control with the value of 0 Nm)
|
12
|
R-PACNC
(APT Sensor Output Value)
|
FFh or NO reception
|
A/C OFF (Control with the value of 0 hpa)
|
13
|
RLY-AC
(Activation of air conditioner compressor relay)
|
FFh or NO reception
|
A/C OFF
|
|
1. |
Disconnect the negative (-) battery terminal.
|
2. |
Remove the crash pad center panel.
(Refer to Crash Pad - "Crach Pad Center Panel")
|
3. |
After loosening the mounting screws, remove the A/C & heater controller
unit (A).

|
4. |
Disconnect the connector (A) and the air hose (B).

|
5. |
Install in the reverse order of removal.
•
|
Make sure the connector are connected in properly.
|
•
|
Replace any damaged clips.
|
|
|
Components and components location
Components
Connector [A]
Pin NO
Function
Pin NO
Function
1
Low ...
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Hyundai Creta GS 2014-2025 Owners Manual: Vehicle Stability Management
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Hyundai Creta GS 2014-2025 Owners Manual: Vehicle weight
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