Nissan Versa (N17): Positive crankcase ventilation

Nissan Versa 2nd generation (N17) Service Manual / Engine / Engine control system (EC) / Positive crankcase ventilation

Inspection

1.CHECK PCV VALVE

With engine running at idle, remove PCV valve from rocker cover. A properly working valve makes a hissing noise as air passes through it. A strong vacuum should be felt immediately when a finger is placed over valve inlet.

Is the inspection result normal?

YES >> INSPECTION END

NO >> Replace PCV valve. Refer to EM, "Exploded View".

CHECK PCV VALVE

EVAP leak check

Inspection CAUTION: Do not use compressed air or a high pressure pump. Do not exceed 4.12 kPa (0.042 kg/cm2, 0.6 psi) of pressure in EVAP system. NOTE: Do not start engine. Improp ...

Removal and installation

ECM Exploded View 1. ECM bracket 2. ECM  : Vehicle front Removal and Installation CAUTION: Perform ADDITIONAL SERVICE WHEN REPLACING ECM. Refer to EC-122, "Work Procedure". ...

Other materials:

Camshaft valve clearance
Inspection and Adjustment INSPECTION Perform inspection as follows after removal, replacement or installation of camshaft or valverelated parts, or if there are unusual engine conditions regarding valve clearance. Remove rocker cover. Measure the valve clearance with the following proced ...

Fuel filler cap warning system
FUEL FILLER CAP WARNING SYSTEM : System Diagram FUEL FILLER CAP WARNING SYSTEM : System Description INPUT/OUTPUT SIGNAL CHART Input Unit/Sensor Input signal to ECM ECM function EVAP control system pressure sensor Pressure in purge line Fuel filler cap warning cont ...

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