Copyright by Hyundai Motor Company. All rights reserved. Air Conditioning

2 TB: SEMI CTR TYPE : G/BOX capacity 5~6 G/BOX (5) SEMI CTR HVAC CTR MTG HVAC G/BOX (15) PB: CTR TYPE : G/BOX capacity 15 Specification ItemsPB (i20)Remarks CompressorSwash plate type (10PA17) CondenserIntegrated receiver drier Refrigerant (cc)570±20g Pressure sensor typeAPT HVAC typeCenter mounting type Cooling fanSingle fan Cooling fan controlRelay (Low/High) Fin thermo sensorInserted in evaporator Blower motorAuto 8step (Manual 4steps) FATC AQS sensor not applied In-car sensor applied (Motor type), No humidity sensor Photo sensor located in the center of crash pad Water temperature sensor signal is used Feedback type (position sensor embedded) Diagnosis by control panel or scanner

3 Air Conditioning Inputs Block diagram Tail lamp, Rheostat (illumination) Dial switch (temperature) Power (B+, IG2) and Ground FATC control module Fin thermo sensor In-car sensor Ambient temperature sensor Photo sensor Water temperature sensor Switches Auto, OFF, A/C, Recirculation, Fresh, Defroster, Defogger, Mode, Blower speed APT Eng. ECM Vehicle speed

4 Air Conditioning Fin thermo sensor Location & Specification Temp. ( ) Voltage (V) Temp. ( ) Voltage (V) Sensor power (5V) Sensor ground

5 Air Conditioning In-car sensor Location & Specification Temp. ( ) Voltage (V) Temp. ( ) Voltage (V) Sensor power (5V) In-car sensor motor (-) Sensor ground

6 Air Conditioning Ambient temperature sensor Location & Specification Sensor power (signal) FATC Ambient temperature sensor Trip computer Sensor power (signal) Sensor ground

7 Air Conditioning Photo sensor Location & Specification Sensor power (5V) Sensor ground

8 Air Conditioning Engine temperature sensor Location & Specification FATC ECT temperature sensor ECM, Cluster

9 Air Conditioning APT (Automotive pressure transducer) Location & Specification APT A/C Switch signal (HI) Blower switch ON signal Eng. ECM A/C output

10 Air Conditioning Outputs Block diagram FATC control module FET / Blower motor Temperature actuator Mode actuator Intake actuator BCM Rear defogger Rear defogger indicator Eng. ECM A/C switch (high) Compressor Resistor Condenser fan K-line Blower switch ON A/C output

11 Air Conditioning Field Effect Transistor Location & Specification Blower relay FET M F/B D GS FET Gate voltage output FET Drain voltage feedback

12 Air Conditioning Temperature actuator Location & Specification Temp. actuator Sensor power5V HI (32 C) 4.55V LO (17 C) 0.45V Temp. actuator Sensor power (5V) Sensor ground Sensor f/back Temp. actuator (Cooling) Temp. actuator (Heating)

13 Air Conditioning Mode actuator Location & Specification Mode actuator Sensor power5V Vent0.45V Bi-level1.50V Floor2.65V Mix3.50V Defroster4.55V Mode actuator Sensor power (5V) Sensor ground Sensor f/back Mode actuator (Vent) Mode actuator (Defroster)

14 Air Conditioning Intake actuator Location & Specification Recirculation/Fresh actuator TerminalVoltage B-2Sensor power(5V) B-11Sensor feedback B-6Sensor ground A-22Fresh mode A-23Recirculation mode A-connectorB-connector

15 Air Conditioning Owners setting procedure Defroster logic control Temperature unit conversion Cannot be changed ! OFF button + AUTO button (3sec)

16 Air Conditioning Diagnosis on the control panel Procedure Proceed to next step by A/C switch IGN S/W: OFF ON Keep pressing OFF switch and press Mode switch 4 times within 2sec. Self-diagnosis (Continuous check) Self-diagnosis (Step by step) FULL AUTO control Press OFF Press AUTO Press OFF

17 Air Conditioning PTC (Positive Temperature Coefficient) Heater Location of PTC relay 1, 2 and 3 PTC heater PTC relay 1PTC relay 2PTC relay 3

18 Air Conditioning PTC (Positive Temperature Coefficient) Heater Engine ECM Heater controller PTC relay 1 Relay Control Blower motor control Condition satisfied Relay control PTC relay 2 PTC relay 3