Mazda CX-5 Service & Repair Manual: Positive Crankcase Ventilation (PCV) Valve
Purpose, Function
-
Prevents release of blow-by gas (unburnt gas) into the atmosphere.
-
The PCV valve is open/closed by the intake manifold vacuum.
Construction
-
The PCV valve is installed to the oil separator.
-
The PCV valve consists of a spring and valve.
Operation
-
When the valve is pulled by the intake manifold vacuum, blow-by gas flows to the intake manifold.
-
Blow-by gas flow amount is adjusted by the spring according to the intake manifold vacuum.
Positive Crankcase Ventilation (PCV) Valve Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the intake manifold..
3. Remove in the order indicated in the table.
4. Install in the reverse order of removal.
1
...
Purge Solenoid Valve Inspection
Airflow Inspection
1. Disconnect the negative battery cable..
2. Remove the purge solenoid valve..
3. Inspect airflow between the ports under the following conditions.
...
Other materials:
Wheel Hub Component Inspection
Wheel Bearing Excessive Play Inspection
1. Install the magnetic base and dial gauge as shown in the figure and measure
the wheel bearing axial excessive play.
If it exceeds the maximum specification, replace the wheel hub component.
Rear wheel bearing maximum play
...
Not P Position Switch Inspection
NOTE:
The not P position switch is built into the selector lever component.
1. Disconnect the negative battery cable..
2. Remove the front console..
3. Disconnect the selector lever component connector.
4. Verify that the continuity between selector lever component terminals ...
Anticorrosion, Sound Insulation, And Vibration Insulation
Body Sealing
Apply body sealer where necessary.
For locations where application of body sealer is difficult after installation,
apply it before installation.
Application of Undercoating
Apply an undercoat to the required location of the body.
Application ...
