Repair procedures

Self Diagnosis

1. Self-diagnosis process




2. How to read self-diagnostic code
After the display the 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
Fault codes are displayed in numerical format.





3. Fault code display
(1) Continuance operation : None or one DTC code.




(2) Continuance operation : Two or more DTC code.




(3) STEP operation
A. Normal or one fault code is same as a continuance operation.
B. There are two or more DTC code.




4. If fault codes are displayed when checking, inspect for malfunction causes by referring to fault codes table.
5. Fail safe
(1) In-car temperature sensor : Control with the value of 25°C(77°F)
(2) Ambient temperature sensor : Control with the value of 20°C(67°F)
(3) Evaporator temperature sensor : Control with the value of -2°C(28.4°F)
(4) Water temperature sensor : Control with the value of 90°C(194°F)
(5) Temperature control actuator (Air mix potentiometer) :
If temperature setting is 17°C-24.5°C, fix at maximum cooling position.
If temperature setting is 25°C-32°C, fix at maximum heating position.
(6) Mode control actuator (Direction potentiometer) :
Fix vent position, while selecting vent mode.
Fix defrost position, while selecting all except vent mode.
(7) Intake control actuator :
Fix fresh position, while selecting fresh mode.
Fix recirculation position, while selecting recirculation mode.
(8) Auto defog sensor : Control with the value of 0%.

Replacement

1. Disconnect the negative (-) battery terminal.
2. Using a screwdriver or remover, remove the crash pad center garnish (A).




3. Remove the heater and A/C controller (A) after loosening 4 screws.




4. Disconnect the connectors (A).




5. Install in the reverse order of removal.