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6.1 - MAF - Mass Airflow Meter ( )

The MAF is situated in the intake air ducting between the air filter and inlet manifold. It measures the volume of air entering the engine and is therefore a major input to the ECU's operation. As a result of the low voltage of the output signal, the connectors are gold plated and should always be kept scrupulously clean.


6.10 - Evaporative Emission Control ( )

This system captures fuel vapours from the tank and throttle body which would otherwise be released into the atmosphere. Vapour from the tank is collected via hose in a charcoal canister mounted behind the left front wheel. When the engine is running, the vapour is pulled by inlet vacuum into the throttle body and burnt as part of the normal combustion process. This process is controlled by the ECU to only occur when the engine has warmed up.


6.11 - Traction Control ( )

This system reuses the speed sensors fitted to each wheel for ABS operation to detect if the rear wheels are turning faster than the front, indicating that wheelspin is occurring.

In this case, the system backs off the throttle, reducing engine power until the spin is eliminated. This is done by the motor fitted effectively in line with the throttle cable, on the left side of the engine bay ahead of the coolant plumbing, valves and pump for the internal heater. Operation can be felt through the throttle pedal.


 

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