Nissan Murano: Heater & Air Conditioning System :: Symptom Diagnosis / Noise

Nissan Murano (Z52) 2015-2024 Service Manual / Ventilation, Heater & Air Conditioner / Heater & Air Conditioning System :: Symptom Diagnosis / Noise

Symptom Table

Symptom	Noise source	Probable cause	Corrective action
Unusual noise from compressor when A/C is ON.	Inside of A/C compressor	Worn, broken, or clogged internal components.	Check compressor oil. Refer to Inspection.
	Magnet clutch	Contact of clutch disc with pulley.	Check clearance between clutch disc and pulley.
	A/C compressor body	Loose A/C compressor mounting bolts.	Check torque of mounting bolts. Refer to Exploded View.
Unusual noise from cooler piping.	Cooler piping (pipe and flexible hose)	Improper installation of clip and bracket.	Check installation of cooler piping. Refer to Exploded View.
Unusual noise from expansion valve when A/C is ON.	Expansion valve	Low refrigerant charge.	Check for leaks. Refer to Leak Test. Recover refrigerant, evacuate system, and recharge with the specified amount of refrigerant. Refer to Recycle Refrigerant.
Unusual noise from expansion valve when A/C is ON.	Expansion valve	Worn, broken, or clogged internal components.	Eliminate foreign material from expansion valve or replace it.
Unusual noise from belt.	—	Loose belt.	Check belt tension. Refer to Checking Drive Belt.
Unusual noise from belt.	—	Damaged or broken components inside A/C compressor.	Replace A/C compressor. Refer to Removal and Installation.

Refrigeration System Symptoms

Trouble Diagnosis For Unusual Pressure Diagnose using a manifold gauge whenever system’s high and/or low side pressure(s) is/are unusual. The marker above the gauge scale in the following tables indicates the standard (usual) pressure range...

Heater & Air Conditioning System :: Periodic Maintenance

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