Nissan Maxima Service and Repair Manual: Positive crankcase ventilation
Description
This system returns blow-by gas to the intake manifold.
The positive crankcase ventilation (PCV) valve is provided to conduct crankcase blow-by gas to the intake manifold.
During partial throttle operation of the engine, the intake manifold sucks the blow-by gas via the PCV valve.
Normally, the capacity of the valve is sufficient to handle any blow-by and a small amount of ventilating air.
The ventilating air is drawn from the air inlet tubes into the crankcase. In this process the air passes via the hose connecting air inlet tubes to rocker cover.
Under full-throttle condition, the manifold vacuum is insufficient to draw the blow-by flow via the valve.
The flow goes via the hose connection in the reverse direction.
On vehicles with an excessively high blow-by, the valve does not meet the requirement. This is because some of the flow will go via the hose connection to the air inlet tubes under all conditions.
Component 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 via the it.
A strong vacuum should be felt immediately when a finger is placed over valve inlet.
On board refueling vapor recovery (ORVR)
Description
From the beginning of refueling, the air and vapor inside the fuel tank go
via the refueling EVAP vapor cut
valve and EVAP/ORVR line to the EVAP canister. The vapor is absorbed by ...
Refrigerant pressure sensor
Description
The refrigerant pressure sensor is installed at the condenser of the air
conditioner system. The sensor uses an
electrostatic volume pressure transducer to convert refrigerant pressur ...
Other materials:
Shift position indicator circuit
Description
TCM sends position indicator signals to
combination meter via CAN communication line.
The selector lever position is indicated on the
shift position indicator.
Component Function Check
1.CHECK SHIFT POSITION INDICATOR
CAUTION:
Always drive vehic ...
Glass
When cleaning the rear window, it may be easier
to clean if the high-mounted stop light is removed
first.
Be careful when removing the high-mounted
stop light to reduce the risk of damaging the
high-mounted stop light wires.
To remove the high-mounted stop light:
Push toward rear of ...
Dual Panel Moonroof (if so equipped)
Power moonroof.
The moonroof will only operate when the ignition
switch is in theONposition. The power moonroof
is operational for a period of time, even if the
ignition switch is placed in the ACC or OFF
position. If the driver's door or the front passenger's
door is opened during this pe ...
Nissan Maxima Owners Manual
- Illustrated table of contents
- Safety-Seats, seat belts and supplemental restraint system
- Instruments and controls
- Pre-driving checks and adjustments
- Monitor, climate, audio, phone and voice recognition systems
- Starting and driving
- In case of emergency
- Appearance and care
- Do-it-yourself
- Maintenance and schedules
- Technical and consumer information
Nissan Maxima Service and Repair Manual
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