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

Kia Rio 2017-2024 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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