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:
Air Intake Actuator [Full Auto Air Conditioner]
Purpose
The air intake actuator moves the air intake door in the blower unit to switch
the air intake port.
Function
The air intake actuator drives the motor based on the signal from the climate
control unit and moves the air intake door to the FRESH or REC position.
...
Headlight Aiming
NOTE:
Perform headlight aiming if any of the following work is performed.
Front combination light replacement
Work that can affect vehicle height such as suspension replacement or
removal/installation.
1. Empty the vehicle by having all occupants leav ...
Rear Stabilizer Control Link Inspection
1. Remove the rear stabilizer control link..
2. Inspect for bending or damage. If there is any malfunction, replace the rear
stabilizer control link.
3. Rotate the ball joint stud 10 times and shake it side to side 10
times.
4. Measure the ball-joint rotational torque using an Allen wrench ...
