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:
Outer Mirror Glass Inspection
Heated Outer Mirror
1. Disconnect the negative battery cable..
2. Remove the outer mirror glass..
3. Verify that the resistance and continuity between the heated outer mirror
terminals is as indicated in the table.
If not as indicated in the table, or if the resistance is not with ...
Auto Dimming Mirror Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the screw B.
3. Remove the auto-dimming mirror in the direction of arrow (1) shown in the
figure.
4. Detach tabs while push the cover No.2 in the direction of the arrow (2) shown
in the figure, then remove the cover No.2 in the d ...
Fuse Block
Purpose
Fuses used by each system are grouped and housed together for smooth inspection
and replacement servicing.
Function
Fuses used by each system are grouped and housed together.
Construction
Installed inside the front side trim (LH).
Operation
Fu ...
