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Home >> Hyundai >> 2018 >> Kona Limited, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 178 (Heater And A/C Control Unit) >> Heater & A/C Control Unit (DATC) >> Repair Procedures >> Self Diagnosis

Self Diagnosis

WARNING: This page is about a different car, the 2021 Hyundai Kona. However, it is still accessible from the selected car via links, so may be relevant.
  1. Self-diagnosis process.
    G12606352Courtesy of HYUNDAI MOTOR AMERICA
    NOTE:
    • 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.
  2. Fault code display
    1. Continuance operation: DTC code.
      G12606353Courtesy of HYUNDAI MOTOR AMERICA
    2. Continuance operation: DTC code.
      G12606354Courtesy of HYUNDAI MOTOR AMERICA
    3. STEP operation.

      A. Normal or one fault code is same as a continuance operation.

      B. DTC code.

      G12606355Courtesy of HYUNDAI MOTOR AMERICA
  3. If fault codes are displayed during the check, Inspect malfunction causes by referring to fault codes.
    Display Fail Description
    0 Normal
    11 Incur sensor OPEN
    12 Incur sensor SHORT
    13 Ambient sensor OPEN
    14 Ambient sensor SHORT
    17 Evaporator sensor OPEN
    18 Evaporator sensor SHORT
    19 Driver temp door potentiometer OPEN or SHORT
    20 Driver temp door potentiometer Error
    21 Mode door potentiometer OPEN or SHORT
    22 Mode door potentiometer Error
    25 Intake door potentiometer OPEN or SHORT
    26 Intake door potentiometer Error
    31 Auto defog sensor (OPEN)
    Auto defog sensor (SHORT)
    32 Passenger temp door potentiometer OPEN or SHORT
    40 Auto defogging actuator OPEN or SHORT
    41 Defog door potentiometer Error
    44 Cluster anion generator Error
    45 APT CAN Signal Error
    47 RPM CAN Signal Error
    48 Vehicle speed CAN Signal Error
    49 Engine coolant temperature CAN Signal Error
  4. Fail safe
    NO Item Fault Fail Safe
    1 Incur sensor Open or Short Control with the value of 25°C (77.0°F)
    2 Ambient sensor Open or Short Control with the value of 20°C (67°F)
    3 Evaporator sensor Open or Short Control with the value of -2°C (28.4°F)
    4 Mode door potentiometer Open or Short Fix vent position, while selecting vent mode.
    Fix defrost position, while selecting all except vent mode.
    Fix vent position, while selecting IG ON → OFF.
    Fix defrost position, while selecting floor purge.
    5 Temperature door potentiometer (MTC) Open or Short If temperature setting 1 - 7 step, fix at maximum cooling position.
    If temperature setting 8 - 15 step, fix at maximum heating position.
    6 Temperature door potentiometer (DATC) Open or Short If temperature setting 17°C (62.6°F) - 24.5°C (76.1°F), fix at maximum cooling position.
    If temperature setting 25°C (77°F) - 32°C (89.6°F), fix at maximum heating position.
    7 Intake door potentiometer Open or Short Fix vent position, while selecting vent mode.
    Fix defrost position, while selecting all except vent mode.
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