Kia Soul EV: Controller / Heater & A/C Control Unit (FATC) Repair procedures

Kia Soul EV (PS EV) 2015-2020 Service Manual / Heating,Ventilation, Air Conditioning / Controller / Heater & A/C Control Unit (FATC) Repair procedures

Self Diagnosis
1.
Self-diagnosis process

2.
How to read self-diagnostic code
After the display panel flickers three times every 0.5 second, the corresponding fault code flickers on the setup temperature display panel every 0.5 second and will show two figures. Codes are displayed in numerical format
3.
Fault code display
(1)
Continuous operation : DTC code for one.

(2)
Continuous operation : DTC code for two or more.

(3)
STEP operation
A.
Same as continuous operation when normal or one fault code.
B.
DTC code for two or more.

4.
If fault codes are displayed during the check up, inspect possible causes of malfunction by referring to fault codes.
Self-Diagnosis Code
Trouble Description
DTC
00
Normal
-
11
 INCAR SENSOR Open
(OPEN, INCAR F/B voltage greater than or equal to 4.9V)
B1234
12
 INCAR SENSOR Short
(SHORT, INCAR F/B voltage less than or equal to 0.1V)
B1233
13
 AMBIENT SENSOR Open
(OPEN, AMBIENT F/B voltage greater than or equal to 4.9V)
B1238
14
 AMBIENT SENSOR Short
(SHORT, AMBIENT F/B voltage less than or equal to 0.1V)
B1237
17
EVAP SENSOR Open
(OPEN, EVAP F/B voltage greater than or equal to 4.9V)
B1242
18
 EVAP SENSOR Short
(SHORT, EVAP F/B voltage less than or equal to 0.1V)
B1241
19
 DRIVER TEMP DOOR POTENTIOMETER Open/Short
Open range: Temp F/B voltage greater than or equal to 4.9V
Short range: Temp F/B voltage less than or equal to 0.1V
B1245 (Open)
B1246 (Short)
20
 DRIVER TEMP DOOR POTENTIOMETER Malfunction
B2406
21
 DR MODE DOOR POTENTIOMETER Open/Short
Open range: DR MODE F/B voltage greater than or equal to 4.9V
Short range: DR MODE F/B voltage less than or equal to 0.1V
B1249 (Open)
B1250 (Short)
22
 DR MODE DOOR POTENTIOMETER Malfunction
B2409
23
 AUTO DEFOG SENSOR Open
B1282
24
 AUTO DEFOG SENSOR Short
B1281
25
 INTAKE DOOR POTENTIOMETER Open/Short
Open range: INTAKE F/B voltage greater than or equal to 4.9V
Short range: INTAKE F/B voltage less than or equal to 0.1V
B1208 (Open)
B1209 (Short)
26
 INTAKE DOOR POTENTIOMETER Malfunction
B2408
27
 PS MODE DOOR POTENTIOMETER Open/Short
Open range: PS MODE F/B voltage greater than or equal to 4.9V
Short range: PS MODE F/B voltage less than or equal to 0.1V
B1206 (Open)
B1207 (short)
28
 PS MODE DOOR POTENTIOMETER Malfunction
B2416
33
 DEF DOOR POTENTIOMETER Open/Short
Open range: DEF F/B voltage greater than or equal to 4.9V
Short range: DEF F/B voltage less than or equal to 0.1V
B1283 (Open)
B1284 (Short)
34
 DEF DOOR POTENTIOMETER Malfunction
B1285
48
 VEHICLE SPEED CAN Singal Error
B1686
50
 CLUSTER Ionizer Error
[DIAG signal voltage less than 2.0V]
B1688
51
 DUCT SENSOR-DR VENT Open
(OPEN, DUCT SENSOR DR VENT F/B voltage greater than 4.9V)
B2187
52
 DUCT SENSOR-DR VENT Short
(SHORT, DUCT SENSOR DR VENT F/B voltage less than 0.1V)
B1286
53
 DUCT SENSOR-DR FLOOR Open
(OPEN, DUCT SENSOR DR FLOOR F/B voltage greater than 4.9V)
B1289
54
 DUCT SENSOR-DR FLOOR Short
(SHORT, DUCT SENSOR DR FLOOR F/B voltage less than 0.1V)
B1288
61
 Ecomp_Wait_Lost Communication
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
 Lost Communication with E-Comp
B160B
68
 Ecomp_Sleep_Missed_Restart
B1826
69
 Ecomp_Sleep_Current sensor error
B1827
70
 Ecomp_Fault_Short circuit
B182B
71
 PTC HTR_LV_Low Fault
B182E
72
 PTC HTR_LV_High Fault
B182F
73
 PTC HTR_HV_Low Fault
B1830
74
 PTC HTR_HV_High Fault
B1831
75
 PTC HTR_Over Curent Fault
B1832
76
 PTC HTR_Thermal Shutdown Fault
B1833
77
 PTC HTR_PCB Thermal Shutdown Fault
B1834
79
 PTC HTR_Failure of High Voltage Sensor
B1835
80
 PTC HTR_Failure of Low Voltage Sensor
B1836
81
 PTC HTR_Failure of Current Sensor
B1837
82
 PTC HTR_Open/Short of PCB Temperature Sensor
B1838
83
 PTC HTR_Open/Short of Core Temperature Sensor
B1839
84
 Lost Communication with PTC
B160C
85
 E-COMP Interlock Circuit OPEN
B2470
86
 High Voltage PTC Interlock Circuit OPEN
B1818
87
 2-Way Valve #2 OPEN
B1858
88
 2-Way Valve #2 SHORT
B1859
89
 2-Way Valve #1 OPEN
B1856
90
 2-Way Valve #1 SHORT
B1857
91
 3-Way Valve #1 OPEN
B1850
92
 3-Way Valve #1 SHORT
B1851
93
 3-Way Valve #2 OPEN
B1852
94
 3-Way Valve #2 SHORT
B1853
95
 FATC C-CAN Bus Off
B1603
96
MCU2 or MCU3 CAN Message Timeout
B2210
97
 VCU1 or 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 greater than 4.9V)
B184A
102
Refrigerant Temperature Sensor (RTS) #1 Short
(SHORT, RTS #1 F/B voltage less than 0.1V)
B184B
103
Refrigerant Temperature Sensor (RTS) #2 Open
(OPEN, RTS #2 F/B voltage greater than 4.9V)
B184C
104
Refrigerant Temperature Sensor (RTS) #2 Short
(SHORT, RTS #2 F/B voltage less than 0.1V)
B184D
105
 APT SENSOR Open
(OPEN, APT SENSOR F/B voltage less than 0.1V)
B1819
106
 APT SENSOR Short
(SHORT, APT SENSOR F/B voltage greater than 4.5V)
B1820
107
 BLOWER MOTOR Seizing
B1804
108
 Coolant Valve OPEN
B185A
109
 Coolant Valve SHORT or Seizing
B185B

5.
Fail safe
No.
SIGNAL
Fail safe mode
Remarks
1
 INCAR SENSOR Short
Fix to 25°C
Check signal line.
2
 INCAR SENSOR Open
Fix to 25°C
Check signal line.
3
 AMBIENT SENSOR Short
''--'' displayed on screen
Alternative control to 20°C
Check signal line.
4
 AMBIENT SENSOR Open
''--'' displayed on screen
Alternative control to 20°C
Check signal line.
5
 EVAP SENSOR Short
Fix to -2°C
Check signal line.
6
EVAP SENSOR Open
Fix to -2°C
Check signal line.
7
DRIVER TEMP DOOR POTENTIOMETER Short
If driver temperature setting is below 24.5°C, fix to cool, and if it is over 25°C, fix to warm.
Check signal line.
8
DRIVER TEMP DOOR POTENTIOMETER Open
Check signal line.
9
 DRIVER TEMP DOOR POTENTIOMETER Malfunction
Fix current position
Check locking of DC motor or door.
10
 DR MODE DOOR POTENTIOMETER Short
For VENT Mode, fix to VENT position, otherwise, fix to DEF position.
Check signal line.
11
 DR MODE DOOR POTENTIOMETER Open
Check signal line.
12
 DR MODE DOOR POTENTIOMETER Malfunction
Fix current position
Check locking of DC motor or door.
13
 INTAKE DOOR POTENTIOMETER Short
If FRE is selected, fix to FRE position, and if REC is selected, fix to REC position.
Check signal line.
14
 INTAKE DOOR POTENTIOMETER Open
Check signal line.
15
 INTAKE DOOR POTENTIOMETER Malfunction
Fix current position
Check locking of DC motor or door.
16
 AUTO DEFOG SENSOR Short
Release ADS
Check signal line.
17
 AUTO DEFOG SENSOR Open
Release ADS
Check signal line.
18
 PS MODE DOOR POTENTIOMETER Short
For VENT Mode, fix to VENT position, otherwise, fix to DEF position.
Check signal line.
19
 PS MODE DOOR POTENTIOMETER Open
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