Plug the BluTrax™ OBD Interface Unit into your vehicle then load the supplied software on to your computer, PDA, Palm or Symbian Smartphone. Then, with BluTrax™, you can get access to information wirelessly from your vehicle's engine and power management control module (ECU / ECM).

The BluTrax™ OBD Interface Unit is a type of device known in the automotive industry as a "scan tool". This section tells you more about how scan tools can access a vehicle's ECU to get information.

Modern automobiles rely upon computers to control and monitor all aspects of vehicle operation. Today’s car contains numerous on-board computers (ECU's) responsible for many systems such as the engine management, transmission, and anti-lock brakes.

The ECU relies upon a variety of sensors to monitor vehicle operation such as speed, engine RPM, coolant temperature, and oxygen sensors. While driving, if the vehicle’s on-board computer system detects a problem the computer reports the error using a Diagnostic Trouble Code. A Diagnostic Trouble Code number indicates the problem with the vehicle.

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