Mazda CX-5 Service & Repair Manual: Positive Crankcase Ventilation (PCV) System
Purpose, Outline
-
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:
Adjuster Anchor Removal/Installation
WARNING:
The side air bag sensor is attached to the lower part of the B-pillar. When
working around the B-pillar, disconnect the negative battery cable or work carefully,
avoiding excessive impact to the lower part of the B-pillar (with side air bag
sensor No.1).
1. Switch the ...
Rear Door Garnish Removal/Installation
WARNING:
Using a utility knife with bare hands can cause injury. Always wear gloves
when using a utility knife.
Front
1. Using a tape-wrapped fastener remover, remove clips A in the direction of
arrow (1), (2) shown in the figure.
2. Remove the double-sided adhesive tape in the ...
Auto Dimming Mirror
Purpose
The automatic glare prevention rearview mirror prevents the driver from being
affected by light from vehicles at the rear.
Structural view
System wiring diagram
Function
The automatic glare prevention rearview mirror detects the level of the surrounding
li ...
