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:
Cruise Control Switch Inspection
1. Disconnect the negative battery cable and wait for 1 min or more..
2. Remove the driver?side air bag module..
3. Disconnect the clock spring connector (part wiring harness-side).
4. Measure the resistance between clock spring terminals E and A (part wiring
harness-side) using a tester.
...
Generator Disassembly/Assembly [Skyactiv G 2.0]
CAUTION:
Melt the solder quickly, otherwise the diodes (rectifier) and regulator will
be damaged by excessive heat.
1. Disassemble in the order indicated in the table.
2. Assemble in the reverse order of disassembly.
1
Rotor component
...
Relay And Fuse Block Removal/Installation
1. Remove the battery tray..
2. Remove the air cleaner case..
3. While pressing the relay and fuse block upper cover tab in the direction of
the arrow (1) shown in the figure, lift up the relay and fuse block upper cover
in the direction of the arrow (2) to detach the relay and fuse block up ...
