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Self-diagnosis process
Self-diagnosis process
How to read self-diagnostic code
After the display panel blinks three times every 0.5 second, the corresponding fault code blinks on the setup temperature display panel every 0.5 second and will show two figures. Codes are displayed in numerical format
Display | Fail Description |
00 | Normal |
11 | In-car temperature sensor short (Low) |
12 | In-car temperature sensor open (High) |
13 | Ambient temperature sensor short (Low) |
14 | Ambient temperature sensor open (High) |
17 | Evaporator sensor short (Low) |
18 | Evaporator sensor open (High) |
19 | Air mix potentiometer open (Low) - Driver |
Air mix potentiometer short (High) - Driver | |
21 | Direction potentiometer open (Low) - Driver |
Direction potentiometer short (High) - Driver | |
20 | Air mix motor - Driver |
22 | Direction control motor - Driver |
25 | Intake potentiometer open (Low) |
Intake potentiometer short (High) | |
26 | Intake motor |
32 | Air mix potentiometer open (Low) - Passanger |
Air mix potentiometer short (High) - Passanger | |
33 | Air mix motor - Passanger |
44 | Cluster Ionizer fault |
31 | Auto defogging sensor signal and Glass sensor input fault |
40 | DEF Direction potentiometer open (Low) |
DEF Direction potentiometer short (High) | |
41 | DEF Direction control motor |
46 | APT sensor Fault (CAN signal) |
47 | Engine RPM Fault (CAN signal) |
48 | Vehicle Speed Sensor Fault (CAN Signal) |
49 | Engine Coolant Temp Sensor Fault (CAN Signal) |
Fault code display
Continuance operation : None or one DTC code.
Continuance operation : Two or more DTC code.
STEP operation
Nomal or one fault code is same as a continuance operation.
Two or more DTC code.
If fault codes are displayed while checking, inspect for malfunction causes by referring to the fault code table.
Fail Safe
No | Sensor | Fail condition | Fail safe function |
1 | In-car sensor | < 0.1V or > 4.9V | 23℃ (73.4℉) |
2 | Ambient temperature sensor | < 0.1V or > 4.9V | 20℃ (68℉) |
3 | Evaporator temperature sensor | < 0.1V or > 4.9V | -2℃ (28.4℉) |
4 | Temperature control actuator feedback - Driver | < 0.1V or > 4.9V | ● Setting temperature is 24.5℃ (76.1℉) or below ● Setting temperature is 25.0℃ (77℉) or above: Max hot |
5 | Mode control actuator feedback - Driver | < 0.1V or > 4.9V | ● Vent: Vent ● Others: Defog |
6 | Intake actuator feedback | < 0.1V or > 4.9V | ● Recirculation: Recirculation ● Others: Fresh |
7 | Temperature control actuator feedback - Passenger | < 0.1V or > 4.9V | ● Setting temperature is 24.5℃ (76.1℉) or below ● Setting temperature is 25.0℃ (77℉) or above: Max hot |
8 | Auto defogging sensor (Relative humidity) | Communication fail | ● Relative humidity: 60%, ● Surrounding temperature : 23℃ (73.4℉) |
9 | Auto defogging actuator feedback | < 0.1V or > 4.9V | ● Close: Close ● Others: Open |
