Nissan Rogue Service Manual: Compressor system symptoms
Symptom Table
Follow the next table and perform trouble diagnosis if there is a compressor unit malfunction (internal noise, insufficient cooling).
|
Symptom |
Inspection method |
Check list |
Result |
Action |
| Noise from compressor unit
When A/C is ON.
(rattling or rolling sound) |
Cooker system internal pressure | Check with manifold gauge | Both high- and lowpressure sides are high.*2 | Recharge with proper amount of refrigerant. |
| High/low-pressures hunt.*2 | Replace compressor only. | |||
| Check compressor oil condition. | Sample compressor oil and judge. | Refer to the criteria shown in compressor lubricant. | Judgment result 1: Replace
compressor only. Judgment result 2: Replace compressor and liquid tank. |
|
| Insufficient cooling*1 | Compressor body | Check rotation of compressor. If sized or stuck, sample compressor oil and judge. |
||
| Cooler system internal pressure | Check with a manifold gauge. Sample compressor oil and judge if the difference between high-pressure and low-pressure is small or if they are almost the same. |
|||
| Outlet air temperature rises temporarily while driving.*2 |
— |
— |
— |
Replace compressor only. |
*1: First conduct inspection according to trouble diagnosis for each
malfunction.
*2: Applicable to variable capacity compressor only.
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 ...
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