Troubleshooting
Before replacing or repairing air conditioner components, first check whether the
failure is caused by refrigerant charge, air flow or compressor. After the repair,
inspect the system components for completeness.The table below is listing the symptoms
of the failure and the parts where the failure is expected. Replace parts if necessary.
No
Blower Operation
|
Suspected Area |
|
Heater fuse |
|
Blower relay & BLDC blower motor |
|
BLDC blower motor |
|
Wiring |
No Air Temperature Control
|
Suspected Area |
|
Coolant capacity |
|
Heater control assembly |
No Compressor Operation
|
Suspected Area |
|
Refrigerant amount |
|
A/C fuse |
|
Electric A/C compressor |
|
A/C pressure transducer (APT) sensor |
|
A/C switch |
|
Evaporator temperature sensor |
|
Wiring |
Not Blowing Cold Air
|
Suspected Area |
|
Refrigerant amount |
|
Refrigerant pressure |
|
Electric A/C compressor |
|
A/C pressure transducer (APT) sensor |
|
Evaporator temperature sensor |
|
A/C switch |
|
Heater control assembly |
|
Wiring |
Insufficient Cooling
|
Suspected Area |
|
Refrigerant amount |
|
Electric A/C compressor |
|
Condenser |
|
Expansion valve |
|
Evaporator |
|
Refrigerant line |
|
A/C pressure transducer (APT) sensor |
|
Heater control assembly |
No Air Inlet Control
|
Suspected Area |
|
Heater control assembly |
No Mode Control
|
Suspected Area |
|
Heater control assembly |
No Cooling Fan Operation
|
Suspected Area |
|
Cooling fan fuse |
|
Fan motor |
|
VCU |
|
Wiring & connector connecting |
Tightening Torque
Item
N·m
kgf·m
lb·ft
Expansion valve (Evaporator) bolt
8.8 - 13.7
0.9 - 1.4
6.5 - 10.1
Suction & ...
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