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:
Floor Under Cover Removal/Installation
1. Lift up the vehicle.
2. Remove bolts A.
3. Remove fasteners B.
4. Remove the floor under cover No.1.
5. Remove nuts C.
6. Remove fasteners D.
7. Remove bolts E.
8. Remove the floor under cover No.2.
9. Remove bolts F.
10. Remove the fastener G.
11. Remove the floor ...
Rear Crossmember Removal/Installation [Awd]
WARNING:
Verify that the crossmember is securely supported by a jack. If the rear
crossmember falls off, it can cause serious injury or death, and damage to the
vehicle.
CAUTION:
Performing the following procedures without first removing the rear ABS wheel-speed
sensor ...
Operating Tips
Operate the climate control system with the engine running.
• To prevent the battery from being discharged,
do not leave the fan control dial on for a long period of time with the ignition
switched ON when the engine is not running.
• Clear all obstructions such as leaves, snow
and ice f ...
