Genuine Mazda Millenia Engine Control Module

Mazda Millenia Engine Control Module Parts and Q&A

• ECM
  KJZ2-18-881R-00
  Q: What is the role of the Engine Control Module in managing engine performance and what are the steps involved in its removal on Mazda Millenia?

  A:

  The ECU oversees the workings of the engine by responding to the input signals of different sensors and adjusting the engine by means of output devices, such as fuel injectors and EGR solenoids. This enables the ECU to check and regulate the key parameters of air/fuel ratio, ignition timing, idle speed and engine temperature, so that the engine could perform optimally to satisfy fuel economy, power and emission control. In the case of ECU it is important to break the negative battery cable to avoid damage by electrical shock. The steps to be followed in the removal process include disconnection of the negative battery cable, the cover of the under dash (drivers side) of the center console unit may be removed and the passenger side cover and driver cover of the centre console unit may be removed, ducts may also be disconnected to the rear heater (where applicable) to access the ECU electrical connectors. In certain models, the trim plate at the center console around the lever of selecting the gears has to be taken away. Lastly, the ECU mounting bolts/nuts are removed and the ECU electrical connectors are disconnected and installation is just the opposite of the first step.