Self Diagnosis
- Self-diagnosis process
The F.A.T.C. module self test feature will detect electrical malfunction and provide error codes for system components with suspected failures.
NOTE: DTC data can be retrieved from the control panel directly or from the DLC using the Hi-Scan Pro. - 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
Fault code
FAULT CODE CHARTFault code Fail description Control unit 0 Normal 11 INCAR TEMPERATURE SENSOR OPEN (High) 12 INCAR TEMPERATURE SENSOR SHORT (Low) 13 AMBIENT TEMPERATURE SENSOR OPEN (High) 14 AMBIENT TEMPERATURE SENSOR SHORT (Low) 15 WATER TEMPERATURE SENSOR OPEN (High) 16 WATER TEMPERATURE SENSOR SHORT (Low) 17 EVAPORATOR TEMPERATURE SENSOR OPEN (High) 18 EVAPORATOR TEMPERATURE SENSOR SHORT (Low) 19 TEMP POTENTIOMETER OPEN or SHORT (Drive) 20 TEMP POTENTIOMETER FAULT (Drive) 21 MODE POTENTIOMETER OPEN or SHORT 22 MODE POTENTIOMETER FAULT 23 HUMIDITY SENSOR OPEN (Open) 24 HUMIDITY SENSOR SHORT (Short) 25 INTAKE POTENTIOMETER OPEN or SHORT 26 INTAKE POTENTIOMETER FAULT 32 TEMP POTENTIOMRTER OPEN or SHORT (Passenger) 33 TEMP POTENTIOMETER FAULT (Passenger) - Fault code display.
- If fault codes are displayed during the check, Inspect malfunction causes by referring to fault codes.
- Fail safe
- In-car temperature sensor: Control with the value of 25°C (77°F)
- Ambient temperature sensor: Control with the value of 20°C (67°F)
- Evaporator temperature sensor: Control with the value of -2°C (28.4°F)
- Humidity sensor: Doesn't control.
- Photo sensor: None correction
- Temperature control actuator (Air mix potentiometer):
- If temperature set 17°C-24.5°C, fix at maximum cooling position.
- If temperature set 25°C-32°C, fix at maximum heating position.
- Mode control actuator (Direction potentiometer):
- Fix vent position, while selecting vent mode.
- Fix defrost position, while selecting all except vent mode.