Kia Soul EV Owner's Manual Quiz
Heating, Ventilation, and Air Conditioning

Heater and Air Conditioning Control Unit (FATC) Repair Procedures

In this manual: Heating, Ventilation, and Air Conditioning
General Information — 17Maintenance — 17Drive Shaft and Axle — 15Suspension System — 36Steering — 24Restraints — 48Brake System — 37Body (Interior and Exterior) — 207Body Electrical System — 203Heating, Ventilation, and Air Conditioning — 80Electric Vehicle Battery System — 115
5steps
~30min
2/5difficulty
Done 0 of 5

Self-Diagnosis

  1. Self-Diagnosis Procedure
  2. How to Read Self-Diagnosis Codes After the display panel flashes three times every 0.5 seconds, the corresponding trouble code flashes in the set temperature display panel every 0.5 seconds and shows two digits. Codes are displayed in numeric format.
  3. Trouble Code Display
    1. Continuous Operation: DTC for One Code.
    2. Continuous Operation: DTC for Two or More Codes.
    3. STEP Operation
      A. Same as continuous operation in normal mode or with one trouble code.
      B. DTC for Two or More Codes.
  4. If trouble codes are displayed during inspection, check the possible causes of the malfunction by referring to the trouble codes.
    Self-Diagnosis Code Description of the problem Trouble Code
    00 Normal -
    11 INCAR SENSOR Open
    (OPEN, INCAR F/B voltage is greater than or equal to 4.9 V)    		 B1234
    12 INCAR SENSOR Short
    (SHORT, INCAR F/B voltage is less than or equal to 0.1 V)    		 B1233
    13 AMBIENT SENSOR Open
    (OPEN, AMBIENT F/B voltage is greater than or equal to 4.9 V)    		 B1238
    14 AMBIENT SENSOR Short
    (SHORT, AMBIENT F/B voltage is less than or equal to 0.1 V)    		 B1237
    17 EVAPORATOR SENSOR Open
    (OPEN, EVAP F/B voltage is greater than or equal to 4.9 V)    		 B1242
    18 EVAPORATOR SENSOR Short
    (SHORT, EVAP F/B voltage is less than or equal to 0.1 V)    		 B1241
    19 DRIVER TEMPERATURE DOOR POTENTIOMETER Open/Short
    Open range: Temp F/B voltage is greater than or equal to 4.9 V
    Short range: Temp F/B voltage is less than or equal to 0.1 V    		 B1245 (open)
    B1246 (short)
    20 DRIVER TEMPERATURE DOOR POTENTIOMETER Malfunction B2406
    21 DR MODE DOOR POTENTIOMETER Open/Short
    Open range: DR MODE F/B voltage is greater than or equal to 4.9 V
    Short range: DR MODE F/B voltage is less than or equal to 0.1 V    		 B1249 (open)
    B1250 (short)
    22 DR MODE DOOR POTENTIOMETER Malfunction B2409
    23 AUTO SENSOR Open B1282
    24 AUTO SENSOR Short Circuit B1281
    25 INTAKE DOOR POTENTIOMETER Open/Short
    Open range: INTAKE F/B voltage is greater than or equal to 4.9 V
    Short range: INTAKE F/B voltage is less than or equal to 0.1 V    		 B1208 (open)
    B1209 (short)
    26 INTAKE DOOR POTENTIOMETER Malfunction B2408
    27 PS MODE DOOR POTENTIOMETER Open/Short
    Open range: PS MODE F/B voltage is greater than or equal to 4.9 V
    Short range: PS MODE F/B voltage is less than or equal to 0.1 V    		 B1206 (open)
    B1207 (short)
    28 PS MODE DOOR POTENTIOMETER Malfunction B2416
    33 DEF DOOR POTENTIOMETER Open/Short
    Open range: DEF F/B voltage is greater than or equal to 4.9 V
    Short range: DEF F/B voltage is less than or equal to 0.1 V    		 B1283 (open)
    B1284 (short)
    34 DEF DOOR POTENTIOMETER Malfunction B1285
    48 VEHICLE SPEED CAN Signal Error B1686
    50 CLUSTER Ionizer Error
    [DIAG signal voltage less than 2.0 V]    		 B1688
    51 DUCT SENSOR-DR VENT Open
    (OPEN, DR VENT DUCT SENSOR voltage greater than 4.9 V)    		 B2187
    52 DUCT SENSOR-DR VENT Short
    (SHORT, DR VENT DUCT SENSOR voltage less than 0.1 V)    		 B1286
    53 DUCT SENSOR-DR FLOOR Open
    (OPEN, DR FLOOR F/B DUCT SENSOR voltage greater than 4.9 V)    		 B1289
    54 DUCT SENSOR-DR FLOOR Short
    (SHORT, DR FLOOR F/B DUCT SENSOR voltage less than 0.1 V)    		 B1288
    61 Ecomp_Wait_Communication Loss B1807
    62 Ecomp_Wait_Low Voltage B1821
    63 Ecomp_Wait_High_Voltage B1822
    64 Ecomp_Wait_Over_Heat_Protection B1823
    65 Ecomp_Wait_Over_Current_Protection B1824
    66 Ecomp_Wait_Low_Temp_Protection B1825
    67 Communication Lost with E-Comp B160B
    68 Ecomp_Sleep_Missed_Restart B1826
    69 Ecomp_Sleep_Current Sensor Malfunction B1827
    70 Ecop_Fault_Short Circuit B182B
    71 PTC HTR_LV_Low Malfunction B182E
    72 PTC HTR_LV_High Malfunction B182F
    73 PTC HTR_HV_Low Malfunction B1830
    74 PTC HTR_HV_High Malfunction B1831
    75 PTC HTR_Over Current Fault B1832
    76 PTC HTR_Thermal Cutoff Malfunction B1833
    77 PTC HTR_PCB Thermal Cutoff Malfunction B1834
    79 PTC HTR_High Voltage Sensor Malfunction B1835
    80 PTC HTR_Low Voltage Sensor Malfunction B1836
    81 PTC HTR_Current Sensor Malfunction B1837
    82 PTC HTR_PCB Temperature Sensor Open/Short B1838
    83 PTC HTR_Internal Temperature Sensor Open/Short B1839
    84 Communication Lost with PTC B160K
    85 E-COMP Lock Circuit OPEN B2470
    86 High Voltage PTC Lock Circuit OPEN B1818
    87 2-Way Valve No. 2 OPEN B1858
    88 2-Way Valve No. 2 SHORT B1859
    89 2-Way Valve No. 1 OPEN B1856
    90 2-Way Valve No. 1 SHORT B1857
    91 3-Way Valve No. 1 OPEN B1850
    92 3-Way Valve No. 1 SHORT B1851
    93 3-Way Valve No. 2 OPEN B1852
    94 3-Way Valve No. 2 SHORT B1853
    95 FATC C-CAN Bus Off B1603
    96 CAN MCU2 or MCU3 Message Timeout B2210
    97 VCU1, VCU5 or VCU10 CAN Message Timeout B2209
    98 BMS1 CAN Message Timeout B2211
    101 Refrigerant Temperature Sensor (RTS) #1 Open
    (OPEN, RTS #1 F/B voltage above 4.9 V)    		 B184A
    102 Refrigerant Temperature Sensor (RTS) #1 Short
    (SHORT, RTS #1 F/B voltage below 0.1 V)    		 B184B
    103 Refrigerant Temperature Sensor (RTS) #2 Open
    (OPEN, RTS #2 F/B voltage above 4.9 V)    		 B184C
    104 Refrigerant Temperature Sensor (RTS) #2 Short
    (SHORT, RTS #2 F/B voltage below 0.1 V)    		 B184D
    105 APT Sensor Open
    (OPEN, APT SENSOR F/B voltage below 0.1 V)    		 B1819
    106 APT Sensor Short
    (SHORT, APT SENSOR F/B voltage above 4.5 V)    		 B1820
    107 Blower Motor Locked B1804
    108 Coolant Valve Stuck Open B185A
    109 Coolant Valve Short or Stuck B185B
  5. Fail-safe
    No. SIGNAL Fail-Safe Mode Malfunction Notes
    1 INCAR Sensor Short Fix to 25 °C Check the signal line.
    2 INCAR Sensor Open Fix to 25 °C Check the signal line.
    3 AMBIENT Sensor Short "--" displayed on screen
    Alternative control to 20 °C    		 Check the signal line.
    4 AMBIENT Sensor Open "--" displayed on screen
    Alternative control to 20 °C    		 Check the signal line.
    5 EVAPORATOR Sensor Short Fix to -2°C Check the signal line.
    6 EVAPORATOR Sensor Open Fix to -2°C Check the signal line.
    7 DRIVER TEMPERATURE DOOR POTENTIOMETER Short If the driver set temperature is below 24 °C, set cold temperature; if it is above 25 °C, set warm temperature. Check the signal line.
    8 DRIVER TEMPERATURE DOOR POTENTIOMETER Open Check the signal line.
    9 DRIVER TEMPERATURE DOOR POTENTIOMETER Malfunction Fix to current position Check the DC motor or door lock.
    10 DR MODE DOOR POTENTIOMETER Short For VENT mode, fix to VENT position; otherwise, fix to DEF position. Check the signal line.
    11 DR MODE DOOR POTENTIOMETER Open Check the signal line.
    12 DR MODE DOOR POTENTIOMETER Malfunction Fix to current position Check the DC motor or door lock.
    13 INTAKE DOOR POTENTIOMETER Short If FRE is selected, fix to FRE position; if REC is selected, fix to REC position. Check the signal line.
    14 INTAKE DOOR POTENTIOMETER Open Check the signal line.
    15 INTAKE DOOR POTENTIOMETER Malfunction Fix to current position Check the DC motor or door lock.
    16 AUTO SENSOR Short Circuit Release advertisement Check the signal line.
    17 AUTO SENSOR Open Release advertisement Check the signal line.
    18 PS MODE DOOR POTENTIOMETER Short For VENT mode, fix to VENT position; otherwise, fix to DEF position. Check the signal line.
    19 PS MODE DOOR POTENTIOMETER Open

Components and Component Locations of Heater and Air Conditioning Control Unit (FATC)

Components Function Pin No. Connector A Connector B Connector C 1 ILL (+) Ground Electric Compressor Lock (+) 2 Sensor REF (+5V) Sensor Ground Electric Compressor Lock (-) 3 C_CAN High ...

Electric Vehicle Battery System

...

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