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:
Washer Tank Removal/Installation
With Washer Fluid-level Sensor
1. Disconnect the negative battery cable..
2. Set the front over fender aside..
3. Set the mudguard (RH) aside..
4. Remove the front bumper..
5. Remove the bracket.
6. Disconnect the washer motor connector.
7. Disconnect the washer fluid-level sensor c ...
Front Brake (Disc) Removal/Installation
1. Remove in the order indicated in the table.
2. Install in the reverse order of removal.
3. After installation, add brake fluid, bleed the air, and inspect for fluid
leakage..
4. Depress the brake pedal a few times, rotate the wheel by hand, and verify
that the brake does not drag.
...
Cruise Main Indicator Light (Amber)
Purpose/Function
Illuminates while the cruise control system is in standby mode to inform
the driver that the cruise control system is on standby.
Construction
Built into the instrument cluster.
Operation
Illuminates while the cruise control system is on sta ...
