Mazda CX-5 Service & Repair Manual: Positive Crankcase Ventilation (PCV) System
Purpose, Outline
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Prevents release of blow-by gas (unburnt gas) into the atmosphere.
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The intake manifold vacuum introduces blow-by gas to the intake manifold via the PCV valve and the ventilation hose.
System Diagram
Structure
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The positive crankcase ventilation system consists of the following parts:
|
Part name |
Reference |
|
PCV valve |
(See POSITIVE CRANKCASE VENTILATION (PCV) VALVE [SKYACTIV-G 2.0].) |
|
Ventilation hose |
? |
Exhaust Gas Purification System
Purpose, Outline
Purifies contaminants (HC, CO, NOx) in the exhaust gas by utilizing the chemical
reactions of the three-way catalytic converter.
System Diagram
Structure
T ...
Positive Crankcase Ventilation (PCV) Valve Inspection
Airflow Inspection
1. Disconnect the section (A) of ventilation hose shown in the figure.
2. Start the engine and verify that vacuum is applied to the end of the disconnected
ventilation hose ...
Other materials:
Customer Assistance (U.S.A.)
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All Wheel Drive System
Outline
The electronic all-wheel drive (AWD) control system automatically and optimally
controls drive torque distribution for the front and rear wheels. Due to this
off-road mobility and driving stability are improved.
Based on the input signals from each sensor, the AWD contro ...
Cruise Set Indicator Light (Green)
Purpose/Function
Illuminates during the cruise control system operation to inform the driver
that the cruise control system is operating.
Construction
Built into the instrument cluster.
Operation
Illuminates during the cruise control system operation.
...
