Mazda CX-5 Service & Repair Manual: Positive Crankcase Ventilation (PCV) System
Purpose, Outline
-
Prevents release of blow-by gas (unburnt gas) into the atmosphere.
-
The intake manifold vacuum introduces blow-by gas to the intake manifold via the PCV valve and the ventilation hose.
System Diagram
Structure
-
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:
Audio Set (Type B)
CAUTION
Do not press the panel strongly or press it with a sharp-pointed object. Otherwise,
the panel could be damaged.
1 Power/Volume/Display/Sound Controls
2 Operating the Radio
3 Operating the Satellite Radio
4 Operating the Compact Disc (CD) Player
5 How to use the Auxiliary jack/U ...
No.28 Fuel Filling Shut Off Concerns
28
FUEL FILLING SHUT OFF CONCERNS
DESCRIPTION
Fuel does not shut off properly.
POSSIBLE CAUSE
PCM DTC is stored.
Nonreturn valve malfunction
Pressure c ...
Low Fuel Warning Light
Purpose
The low fuel warning light warns the driver that the remaining fuel level
is low.
Function
The instrument cluster calculates the fuel quantity based on the following
CAN signals, and if a remaining fuel amount of approx. 10 L {2.6 US gal, 2.2
Imp gal} (fuel gauge ...
