Kia Stonic Quiz
Heating, Ventilation, and Air Conditioning

Heater and Air Conditioner Control Module (FATC)

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 8Maintenance — 31Engine Mechanical — 49Engine Electrical — 15Emission control system — 11Engine Control System/Fuel System — 45Clutch System — 12Manual Transaxle System — 11DCT (Dual Clutch Transmission) System — 16Drive Shafts and Axles — 9Suspension — 16Steering — 10restraint system — 15Braking system — 22Body (Interior and Exterior) — 89Rear Seat — 16Electrical System — 25Electrochromic Interior Rear View Mirror — 64Heating, Ventilation, and Air Conditioning — 31
10steps
~60min
3/5difficulty
Done 0 of 10

Components and Components Location

COMPONENTS LOCATION

CONNECTOR PIN ASSIGNMENT

No. CONNECTOR A PLUG B
1 BATTERY ⁻
2 ISG battery (+) ⁻
3 Illumination Lamps (-) ⁻
4 Sensor (+5V) Defogger Actuator Feedback
5 Feedback Actuator Defogger Actuator (Open)
6 Temperature Actuator Feedback Defogger Actuator (Closed)
7 Intake Actuator Feedback ⁻
8th Evaporator Sensor (+) ⁻
9 Ambient Temperature Sensor (+) ⁻
10 Mode Actuator (Ventilation) ⁻
11 Mode Actuator (DEF) Rear Window Defogger
12 Temperature Actuator (Cold) defog temperature
13 Temperature Actuator (Warm) Remove SCK fitting
14 Intake Actuator (Fresh Air) defog data
15 Intake Actuator (Recirculation) ⁻
16 HTD Dimensions
17 REAR HEATER B/W
18 ⁻
19 ⁻
20 Illumination Lamps (-)
21 IGN2
22 IGN1
23 BLOWER MOTOR (+)
24 PHOTO SENSOR (-)
25 ⁻
26 ⁻
27 ⁻
28 PTC Relay 3
29 PTC Relay 2
30 PTC On Signal
31 Lock Off (+)
32 ⁻
33 Chassis CAN [High]
34 Chassis CAN [Low]
35 FET (bleed hose feedback)
36 gate
37 ECV (-)
38 ECV (-)
39 ground sensor
40 Dimensions

Schematic diagrams

Schematic diagrams

repair procedures

self-diagnosis

  1. self-diagnosis procedure

  2. How to Read Self-Diagnosis

    During self-diagnosis, the corresponding trouble code blinks every 0.5 seconds on the temperature display and shows two digits.

    Trouble codes are displayed in numerical format.

    DISPLAY Malfunction Description
    00 Normal
    11 Interior Temperature Sensor, Open Circuit
    12 Interior Temperature Sensor, Short Circuit
    13 Ambient Temperature Sensor Open Circuit
    14 Ambient Temperature Sensor Short Circuit
    17 Evaporator Temperature Sensor Open Circuit
    18 Evaporator Temperature Sensor Short Circuit
    19 Temperature Door Potentiometer - Open Circuit/Short Circuit
    20 Temperature Door Potentiometer - Malfunction
    21 Mode Door Potentiometer Open Circuit/Short Circuit
    22 MODE DOOR POTENTIOMETER MALFUNCTION
    25 Open/Short Circuit in Intake Door Potentiometer
    26 INTAKE POTENTIOMETER MALFUNCTION
    43 Footwell Door Potentiometer Open Circuit/Short Circuit
    44 Footwell Door Potentiometer - Malfunction
    45 APT (Air Conditioner Pressure Sensor) - CAN Signal Error
    47 RPM CAN signal error
    48 Vehicle Speed CAN Signal Error
    49 Engine Coolant Temperature CAN Signal Error
    50 Air Ionizer Malfunction
    51 Communication failure with the defog sensor and incorrect input signal

  3. DTC DISPLAY

    1. Continuous Operation: No DTC or one DTC is present.

    2. Continuous Operation: Two or more DTCs are present.

    3. Gradual Operation

      A

      Normal or the same DTC as during continuous operation.
      B.

      Two or more DTCs are present.

  4. If DTCs are displayed during inspection, identify the malfunction using the DTC chart.

  5. Limp Home Control

    NO sensor fault condition Limp Home Function
    1 Interior Temperature Sensor < 0.1 V or > 4.9 V 23°C
    2 Ambient temperature sensor < 0.1 V or > 4.9 V 20°C
    3 Evaporator Temperature Sensor < 0.1 V or > 4.9 V -2°C
    4 Temperature Actuator Feedback < 0.1 V or > 4.9 V

    • Maximum set temperature 24 °C: Maximum cooling

    • Minimum set temperature 25 °C: Maximum heating
    5 Feedback Actuator < 0.5 V or > 4.5 V

    • Vent: Ventilation

    • Other: Window defrost
    6 Intake Actuator Feedback < 0.1 V or > 4.9 V

    • Convection: Convection mode

    • Other: Fresh air mode
    7 Feedback Footwell Actuator < 0.5 V or > 4.5 V

    • Vent: Open

    • Other: Closed
    8th Anti-Fog Sensor
    (Relative Humidity)    		 communication fault

    • Relative Humidity: 60%,

    • Ambient Temperature: 23 °C
    9 Automatic Anti-Fog Sensor
    (window temperature)    		 < 0.1 V or > 4.9 V Disc temperature: 23 °C
    10 Engine Coolant Temperature communication fault 85°C (185°F)
    11 ECV Feedback No input signal from ECV
    feedback signal

    • ECV Malfunction Signal: 1

    • PWM control output: remains

    • Tightening torque: 0

REMOVAL AND INSTALLATION

  1. Disconnect the battery ground cable.

  2. Remove the passenger side instrument panel trim.

    (Refer to Body - "Instrument Panel Garnish [Right]")

  3. Loosen the mounting bolts, then remove the heater and A/C control unit (A).

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

  5. Installation is the reverse of removal.

Test yourself

A quick Kia Stonic quiz: every answer comes with an explanation and a link to the manual page.