Sunday, May 24, 2020

2010 Lexus Truck RX 350 AWD V6-3.5L (2GR-FE) B CODE Page 450


NG -- REPLACE A/C PRESSURE SENSOR



OK -- REPLACE A/C AMPLIFIER



12. REPAIR A/C SYSTEM LEAK



(a) Identify the area where refrigerant leaks from See: Heating and Air Conditioning/Service and Repair.



(b) Repair the identified area of the A/C system.



(c) Evacuate the A/C system.



NEXT -- CHARGE REFRIGERANT



13. INSPECT COOLING FAN SYSTEM



(a) Check that the cooling fan(s) operates normally.



HINT



Refer to Cooling Fan Circuit See: Engine, Cooling and Exhaust/Cooling System/Radiator Cooling Fan/Testing and



Inspection/Component Tests and General Diagnostics/Cooling Fan Circuit.



NG -- REPAIR COOLING FAN SYSTEM



OK -- Continue to next step.



14. CHARGE REFRIGERANT



(a) Use a refrigerant recovery unit to recover refrigerant.



(b) Evacuate the A/C system.



(c) Add an appropriate amount of refrigerant See: Heating and Air Conditioning/Service and Repair.



HINT



If refrigerant is added and the system has not been properly evacuated (insufficient vacuum time), moisture in the air remaining



in the system will freeze in the expansion valve, blocking the flow on the high pressure side. Therefore, recover the refrigerant and



properly evacuate the system. Add an appropriate amount of refrigerant, and check for DTCs.



NEXT -- Continue to next step.



15. RECHECK FOR DTC



(a) Recheck for the DTC when the following conditions are satisfied.



NOTICE:



If refrigerant pressure on the high pressure line is excessive, this DTC will be set. Therefore, it is necessary to measure the voltage



over a period of time (approximately 10 minutes) because DTC may be set after the A/C has been operating for a while.



HINT



* When the outside air temperature is low (below -1.5锟斤拷C (29.3锟斤拷F)), the compressor stops due to signals from the ambient



temperature sensor and the evaporator temperature sensor to prevent the evaporator from freezing. In this case, perform the



inspection in a warm indoor environment.



* If refrigerant is added and the system has not been properly evacuated (insufficient vacuum time), moisture in the air

No comments:

Post a Comment