WARNING:
A hot engine can cause severe burns. Turn off the engine and wait until it is cool before servicing.
CAUTION:
Do not disassemble the electric variable valve timing motor/driver because it is a precision unit.
Do not apply excessive force when rotating the electric variable valve timing motor joint. If it is rotated with excessive force, the electric variable valve timing motor could be damaged.
1. Disconnect the negative battery cable..
2. Remove the plug hole plate..
3. Remove the electric variable valve timing motor/driver..
4. Rotate the electric variable valve timing motor joint to the left and right by your fingers and verify that it rotates smoothly in 15°
increments.
NOTE:
Rotate the joint area smoothly using only the tips of your fingers.
The electric variable valve timing motor joint moves in 15°
increments, and if the joint is moved 24
times, it rotates one full rotation.

If it does not rotate smoothly, replace the electric variable valve timing motor/driver.(See ELECTRIC VARIABLE VALVE TIMING MOTOR/DRIVER REMOVAL/INSTALLATION [SKYACTIV-G 2.0].)
5. Install in the reverse order of removal.
Electric Variable Valve Timing Actuator, Hydraulic Variable Valve Timing Actuator
Removal/Installation
Electric Variable Valve Timing Motor/Driver Removal/InstallationMultiplex Communication System
A controller area network (CAN) system has been adopted in which multiplex
communication is performed using a single communication path.
A high-speed controller area network (HS-CAN) has been adopted for the communication
between the following modules:
PCM
...
Forced Ignition On
NOTE:
In order to perform a forced ignition ON, the M-MDS is necessary. If the
servicing is being done outside of an Authorized Mazda dealership, contact an
Authorized Mazda dealership for instructions.
The forced ignition ON procedure forces a power supply to each part when
...
Electric Variable Valve Timing Actuator
Purpose, Function
The electric variable valve timing actuator changes the phases of the intake
camshaft relative to the crankshaft. As a result, the open/close period of the
intake valve is changed, optimized valve timing in accordance with driving conditions
is realized, output is i ...