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:

Fuel pressure check
Work Procedure FUEL PRESSURE RELEASE 1.FUEL PRESSURE RELEASE With CONSULT Turn ignition switch ON. Perform "FUEL PRESSURE RELEASE" in "WORK SUPPORT" mode with CONSULT. Start engine. After engine stalls, crank it two or three times to release all fuel pressure. Turn ignition switc ...

Diagnosis sensor unit
Removal and Installation 1. Diagnosis sensor unit 2. Diagnosis sensor unit harness bracket Front REMOVAL WARNING: When replacing the air bag diagnosis sensor unit, always check with the parts department for he latest parts information. Installing an incorrect air bag diagnosis sensor uni ...

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