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Hyundai Tucson: Controller

Hyundai Tucson - Fourth generation (NX4) - (2020-2023) - Workshop Manual / Heating, Ventilation and Air Conditioning (HVAC) / Controller

Component

Connector Pin Function

Connector Pin Function

Replacement

Replacement

  1. Disconnect the negative (-) battery terminal.
  2. Remove the front monitor.

    (Refer to Body Electrical System - "Front Monitor")

  3. Remove the heater & AJC control unit (A).

  1. Install in the reverse order of removal.

WARNING

  • Replace any damaged clips.
  • Make sure the connector is connected properly.

Components

Connector Pin Function

Connector Pin Function

Self Diagnosis

Self Diagnosis

  1. Self-diagnosis process.

WARNING

WARNING

When operating the self-diagnostics, the below fault(self-diagnostics code) will blink at 0.5 seconds interval on the temperature display settings(driver's side only) and the remaining symbols are OFF .

  1. Fault code display

(1) Continuance operation : DTC code.(2) Continuance operation : DTC code.

(2) Continuance operation : DTC code.(3) STEP operation.

(3) STEP operation.

  1. Nomal or one fault code is same as a continuance operation.
  2. DTC code.
  1. Self diagnostic code

  1. FAIL SAFE

Replacement

Replacement

  1. Disconnect the negative (-) battery terminal.
  2. Remove the front monitor.

    (Refer to Body Electrical System - "Front Monitor")

  3. Loosen the mounting screw, remove the heater & A/C control unit (A).

  1. Install in the reverse order of removal.

WARNING

  • Replace any damaged clips.
  • Make sure the connector is connected properly.

Components Location

  1. Heater control unit

Component

Connector Pin Function

Connector Pin Function

Replacement

Replacement

  1. Disconnect the negative (-) battery terminal.
  2. Remove the crash pad center panel.

    (Refer to Body (Inteiror and Exterior) - "Crash Pad Center Panel")

  3. Disconnect the connectors (B) and remove the heater control unit (A).

  1. To install, reverse removal procedure.

WARNING

Make sure the connector are connected in properly.

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