Mazda CX-5 Service & Repair Manual: Positive Crankcase Ventilation (PCV) Valve
Purpose, Function
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Prevents release of blow-by gas (unburnt gas) into the atmosphere.
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The PCV valve is open/closed by the intake manifold vacuum.
Construction
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The PCV valve is installed to the oil separator.
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The PCV valve consists of a spring and valve.
Operation
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When the valve is pulled by the intake manifold vacuum, blow-by gas flows to the intake manifold.
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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:
Front Body Control Module (Fbcm) Configuration (Using As Built Data)
NOTE:
If the configuration is performed using As-Built data, the set value of the
personalization function is reset to the initial value (condition when shipped
from factory). Verify the set value with the customer and perform the personalization
function setting after performing th ...
Blind Spot Monitoring (Bsm) System
Outline
The blind spot monitoring (BSM) system detects vehicles approaching from
the rear blind spots, and illuminates the BSM indicator light on the outer mirror
glass. When the BSM indicator light is illuminated and the turn light switch
is turned on to the side in which the indica ...
Airflow Temperature Control [Full Auto Air Conditioner]
Purpose
The airflow temperature control changes the airflow temperature according
to the vehicle conditions.
Function
The air mix actuator is driven and the air mix door position is changed according
to the set temperature and the vehicle environment.
The climate co ...
