Purpose
The tachometer notifies the driver of the engine speed.
Function
The instrument cluster controls the tachometer needle based on the engine speed signal from the PCM and displays the engine speed per minute.
Construction
An analog needle display tachometer with a stepping motor mechanism has been adopted.

Operation
The instrument cluster receives (1) the engine speed signal from the PCM when the ignition is switched ON (engine on).
The instrument cluster moves the needle based on the engine speed signal and displays (2) the current engine speed.

Fail-safe
Function not equipped.
Speedometer
Trip Computer Information SystemTweeter Inspection
1. Disconnect the negative battery cable..
2. Remove the side speaker grille..
3. Remove the tweeter..
4. Verify that the resistance between the tweeter terminals is as indicated in
the table.
If not as indicated in the table, replace the tweeter.
Without Bose®
With B ...
High Pressure Fuel Pump Control
Outline
Changes the fuel pressure applied to the fuel injector according to engine
operation conditions to improve engine output and startability.
The PCM determines the fuel pressure value corresponding to the engine operation
conditions based on the each input signal, and driv ...
Add-On Non-Genuine Parts and Accessories
Non-genuine parts and accessories for Mazda vehicles can be found in stores.
These may fit your vehicle, but they are not approved by Mazda for use with Mazda
vehicles. When you install non-genuine parts or accessories, they could affect your
vehicle's performance or safety systems; the Maz ...