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.
Fault code





3. Fault code display
(1) Continuance operation : DTC code is one.




(2) Continuance operation : DTC code is more two.




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




4. If fault codes are displayed during the check, Inspect malfunction causes by referring to fault codes.
5. Fail safe
(1) In-car temperature sensor: Control with the value of 25°C(77.0°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) Temperature control actuator (Air mix potentiometer) :
If temperature setting 1step-7step, fix at maximum cooling position.
If temperature setting 8step-15step, fix at maximum heating position.
(5) Mode control actuator (Direction potentiometer) :
Fix vent position, while selecting vent mode.
Fix defrost position, while selecting all except vent mode.
(6) Intake control actuator :
Fix fresh position, while selecting fresh mode.
Fix recirculation position, while selecting recirculation mode.
(7) CR_Veh_Spd_Kmh : Control with the value of -2°C(28.4°F)
CR_Veh_Spd_Kmh, CR_Tcu_VehSpd_Kph all Fail mode
vehicle 0 Kph substitute control, CF_Fatc_AcnReqSwi = Keep the Previous speed
(8) CR_Ems_EngColTemp_C : Control with the value of -2°C(28.4°F)
(9) CR_Ems_AptVal_PSI : COMP operation stop(RPM=0)
(10) COMP INVERTER : COMP operation stop(RPM=0)
(11) A/Con Operating Permission : COMP operation stop (RPM=0)
(12) A/C Compressor Permission Power : COMP operation stop (RPM=0)
(13) CF_Hcu_PTOperMod : EV MODE substitute control
(14) D/CLOCK 5V REF INPUT : 5V Ref Ambient Sensor None correction(Clock type Only)

Replacement

1. Remove the crash pad garnish (A).




2. Using the screwdriver, remove the center facia panel (A).




3. Disconnect the connectors (A) and then remove the center facia panel from the crash pad.




4. Remove the heater and A/C controller (A) from the center facia.




5. Install in the reverse order or removal.