Hyundai i-30: Controller / Heater & A/C Control Unit (DATC)

Hyundai i30 (PD) 2018-2024 Service Manual / Heating, Ventilation and Air Conditioning / Controller / Heater & A/C Control Unit (DATC)

Components and components location
Components

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

Connector [B]
Pin NO
Function
Pin NO
Function
1
Passenger's temperature control actuator (Feedback)
9
-
2
Passenger's temperature control actuator (Cool)
10
Duct sensor (+)_Vent
3
Passenger's temperature control actuator (Warm)
11
Duct sensor (-)_Floor
4
Auto defogging (Feedback)
12
Auto defogging sensor signal
5
Auto defogging (Open)
13
-
6
Auto defogging (Off)
14
-
7
-
15
-
8
-
16
Ground

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 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
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 glove box upper cover assembly.
(Refer to Crash Pad - "Glove Box Upper Cover Assembly")
3.
Remove the crash pad center lower cover (A) after loosening the mounting screws.

4.
After loosening the mounting screws, remove the A/C & heater controller unit (A).

5.
Disconnect the connector (A) and the air hose (B).

6.
To install, reverse the removal procedure.
  
Make sure the connector are connected in properly.
Replace any damaged clips (or pin-type retainers).

    Heater & A/C Control Unit (Manual)

    Components and components location Components Connector [A] Pin NO Function Pin NO Function 1 Low 4 Middle Low 2 Common 5 Middle High 3 Ground 6 High Connector [B] Pin NO Function Pin NO Function 1 Battery (+) 21 IGN2 2 ISG B+ 22 IGN1 3 ILL+ (TAIL) 23 - 4 Sensor REF (+5V) 24 - 5 Mode actuator feedback 25 - 6 Temperature actuator feedback 26 - 7 Intake actuator feedback 27 MAX Blower ON Signal 8 EVAP Sensor (+) 28 PTC Relay 3 9 AMB Sensor (+) 29 PTC Relay 2 10 Mode actuator (Vent) 30 PTC on signal 11 Mode actuator (Defrost) 31 Detent OUT (-) 12 Temperature actuator (Cool) 32 - 13 Temperature actuator (Warm) 33 C_CAN High 14 Intake actuator (Fresh Air) 34 C_CAN Low 15 Intake actuator (Recirculated Air) 35 - 16 HTD (Rear defog indicator) 36 ECV + 17 Rear defog switch 37 ECV- (Ground) 18 - 38 Sensor ground 19 Blower ON signal to common 39 Ground 20 ILL- (RHEO) 40 Ground Repair procedures Replacement 1...

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