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:
Brake/Clutch Fluid
Inspecting Brake/Clutch Fluid Level
The brakes and clutch draw fluid from the same reservoir.
Inspect the fluid level in the reservoir regularly. It should be kept at MAX.
The level normally drops with accumulated distance, a condition associated with
wear of brake and clutch linings. If it is ...
Power Outer Mirror System
Outline
Power outer mirrors which can be operated remotely have been adopted.
Structural view
System wiring diagram
Function
Mirror glass adjustment function
Outer mirror glass can be adjusted up/down and left/right electrically.
Operation
Mirror glass adjustmen ...
Cooling System Cap
Purpose, Function
The cooling system cap maintains appropriate pressure in the engine coolant
passage. In addition, cooling efficiency has been improved by increasing the
engine coolant boiling point.
Construction
The cooling system cap is installed to the upper part of the ...
