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:

Instrument panel
1. Headlight/turn signal switch/fog light switch (if so equipped) 2. Driver's supplemental air bag (P. 1-39) Horn 3. Meters and gauges. Warning and indicator lights 4. Wiper and washer switch 5. Vents 6. Rear window defroster switch 7. Front passenger air bag status light 8. Hazard warn ...

U0140 Lost communication (BCM)
DTC Logic DTC DETECTION LOGIC DTC Trouble diagnosis name DTC detection condition Possible causes U0140 Lost Communication With Body Control Module When the ignition switch is ON, TCM is unable to receive the CAN communications signal from BCM continuously ...

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