Kia Rio: Controller / Heater & A/C Control Unit (MANUAL)

Kia Rio 2017-2025 YB Service Manual / Heating,Ventilation, Air Conditioning / Controller / Heater & A/C Control Unit (MANUAL)

Components and components location
Components

Connector pin function

NO.
Connector A
Connector B
1
Low
Battery
2
Common
ISG Battery
3
High
Illumination (+)
4
Middle_LOW
Sensor (+5V)
5
Middle_High

6
High
Intake actuator Feedback
7

Evaporator sensor (+)
8
Ambient sensor (+)
9

10

11
Intake actuator (FRE)
12
Intake actuator (REC)
13
HTD
14
Rear defog switch
15
Blower on signal to common
16
Illumination (-)
17
IGN2
18
IGN1
19

20
Max blower on signal
21
PTC relay 3
22
PTC relay 2
23
PTC on signal
24
Detent out (-)
25

26
Chassis_CAN (High)
27
Chassis_CAN (Low)
28

29
ECV (+)
30
ECV (-)
31
Sensor ground
32
Ground

Schematic diagrams
Schematic Diagram

Repair procedures
Replacement
1.

Disconnect the negative (-) battery terminal.

2.

Remove the crash pad lower panel.

(Refer to Body - "Crash Pad Lower Panel")

3.

Remove the audio unit.

(Refer to Body Electrical System - "Audio Unit")

4.

Remove the glove box.

(Refer to Crash Pad - "Glove Box Housing")

5.

Remove the driver's side shower duct (A) after loosening the screw.

6.

Disconnect the mode control cable (A).

7.

Remove the passenger's side shower duct (A) after loosening the screw.

8.

Disconnect the temperature control cable (A).

9.

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

10.

Disconnect the A/C & heater controller connectors (A).

11.

To install, reverse the removal procedure.

Controller
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Heater & A/C Control Unit (FATC)
Components and components location Components Connector Pin Function No. Connector A Connector B 1 Battery ...

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