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:
Rear Stabilizer Removal/Installation [Awd]
WARNING:
Verify that the rear 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
s ...
Air Mix Actuator Removal/Installation [Full Auto Air Conditioner]
Driver-side
1. Disconnect the negative battery cable..
2. Remove the following parts:
a. Side wall (driver-side).
b. Front heat duct (LH).
3. Disconnect the air mix actuator connector.
4. Remove the screw.
5. Remove the driver-side air mix actuator.
6. Install in the reverse order ...
Air Intake Actuator Inspection [Full Auto Air Conditioner]
1. Connect battery positive voltage to air intake actuator terminal B (or C),
connect terminal C (or B) to ground, and then verify that the air intake actuator
operates as shown in the table.
If the operation condition is not normal, replace the air intake actuator.
...
