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:
Headlight Auto Leveling System Initialization
NOTE:
The AFS control module records the vehicle height while it is unoccupied
by performing the headlight auto leveling system initial setting.
Perform headlight auto leveling system initial setting if any of the following
work is performed.
AFS control module rep ...
Turbine/Input Shaft Speed Sensor, Output Shaft Speed Sensor [Fw6 A EL, Fw6 Ax
EL]
Purpose/Function
The turbine/input shaft speed sensor detects the rotation speed of the input
shaft (low clutch drum).
The output shaft speed sensor detects the rotation speed of the output shaft
(primary gear).
The turbine/input shaft speed sensor and output shaft speed ...
Audio Unit Removal/Installation
Removal
1. Disconnect the negative battery cable.
2. Remove the decoration panel..
3. Remove the bolt.
4. Remove the screws.
NOTE:
When removing the audio unit, the audio unit could interfere with the climate
control unit and scratch the climate control unit. Perform the serv ...
