Hyundai Sonata: Controller / Heater & A/C Control Unit (Manual) Repair procedures

Hyundai Sonata LF 2014-2019 Service Manual / Heating, Ventilation and Air Conditioning / Controller / Heater & A/C Control Unit (Manual) Repair procedures

Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Using a screwdriver or remover, remove the center fascia panel (A).

3.
Disconnect the A/C & heater controller connectors (A).

4.
Remove the heater and A/C controller (A) from the center facia panel.

5.
Install in the reverse order of removal.
   
Make sure the connector are connected in properly.
Replace any damaged clips.
Heater & A/C Control Unit (Manual) Components and Components Location
Components Connector [A] Pin NOFunctionPin NOFunction1ILL+ (TAIL)21Detent OUT (+)2Sensor REF (+5V)22HTD3Mode control actuator (Vent)23Rear defog switch4Mode control actuator (Defrost)24C_CAN High5 ...

Heater & A/C Control Unit (DATC) Components and Components Location
Components Connector [A] Pin NOFunctionPin NOFunction1ILL+ (TAIL)21Detent OUT (+)2Sensor REF (+5V)22HTD (Rear defog indicator)3Mode control actuator (Vent)23Rear defog switch4Mode control actuator ...

Other information:

Hyundai Sonata LF 2014-2019 Owners Manual: Shift-Lock Release
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Hyundai Sonata LF 2014-2019 Service Manual: Fuel Pump Control Module (FPCM) Schematic Diagrams
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