Purpose, Function
The camshaft is rotated by receiving the rotation force of the crankshaft via the timing chain. The valve is opened and closed according to the cam shape at this time.
Construction
The camshaft is installed to the cylinder head.

The intake camshaft is a five-bearing type and the exhaust camshaft is a six-bearing type.
The camshaft thrust force is suppressed by the No.1 journal.
The camshaft has the following parts shown in the figure.

Valve timing
Type A

Type B

Camshaft Position (CMP) Sensor
Cylinder Head CoverCamshaft Position (CMP) Sensor Removal/Installation
CAUTION:
When replacing the CMP sensor, make sure there is no foreign material on
it such as metal shavings. If it is installed with foreign material, the sensor
output signal will malfunction resulting from fluctuation in magnetic flux and
cause a deterioration in engine control.
...
Towing
Trailer Towing (U.S.A. and Canada)
Your Mazda was designed and built primarily to carry passengers and cargo.
If you tow a trailer, follow these instructions because driver and passenger
safety depends on proper equipment and safe driving habits. Towing a trailer will
affect handling, braking, ...
A/C Compressor Control [Full Auto Air Conditioner]
Purpose
The A/C compressor control switches the A/C compressor on/off according to
the vehicle environment.
Function
The A/C compressor control turns the A/C compressor on/off based on the climate
control unit operation and signals from each sensor.
The A/C compress ...