Nissan Versa
Sedan Service Manual
Ventilation, heater & air conditioner » Heater & air conditioning system (HA)
Performance test

Inspection

INSPECTION PROCEDURE

Connect recovery/recycling/recharging equipment (for HFC-134a) or manifold gauge.
Start the engine, and set to the following condition.

Test condition

Maintain test condition until A/C system becomes stable. (Approximately 10 minutes)
Check that test results of "recirculating-to-discharge air temperature" and "ambient air temperature-tooperating pressure" are within the specified value.
When test results are within the specified value, inspection is complete.

If any test result is out of the specified value, perform diagnosis by gauge pressure. Refer to HA "Symptom Table".

RECIRCULATING-TO-DISCHARGE AIR TEMPERATURE TABLE

AMBIENT AIR TEMPERATURE-TO-OPERATING PRESSURE TABLE

SYMPTOM DIAGNOSIS

HEATER AND AIR CONDITIONING SYSTEM SYMPTOMS

Symptom Table

SYMPTOM TABLE

SYMPTOM TABLE

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. Refer to Ambient air temperature-to-operating pressure table since the standard (usual) pressure, differs from vehicle to vehicle.

Symptom Table

Symptom Table