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:
Door Lock Switch Removal/Installation
Driver's Side
NOTE:
The driver's side door lock switch cannot be removed as a single unit because
it is built into the power window main switch. If the driver's side door lock
switch is replaced, replace the power window main switch..
Passenger's Side
1. Disconn ...
Roof Carrier Bracket Removal/Installation
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Sunroof seaming welt (with sunroof system).
b. A-pillar trim.
c. Front map light.
d. Sunvisor.
e. Front scuff plate.
f. Rear scuff plate.
g. B-pillar lower trim.
h. Adjust anchor cover.
i. Upper anchor i ...
Neutral Switch Inspection
Continuity Inspection
1. Disconnect the negative battery cable..
2. Remove the neutral switch..
3. Inspect for continuity between neutral switch No.1 terminal A and B.
If not as specified, replace the neutral switch No.1..
Specification
Measured conditio ...
