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Diagnostics

AVC Workshop

 

AVC technicians use diagnostic tools to identify the source of problems and are then able to make the necessary adjustments and repairs. The duties of a light vehicle diagnostic technician may include: Diagnosing the cause of a problem Repairing the problem in line with manufacturers’ standards Repairing and replacing vehicle components Testing existing and repaired systems Checking for problems in newer vehicles with testing equipment connected to the vehicle’s electronic control unit (ECU)

 

ECU

Controlling the engine is the most processor-intensive job on your car, and the engine control unit (ECU) is the most powerful computer on most cars. The ECU uses closed-loop control, a control scheme that monitors outputs of a system to control the inputs to a system, managing the emissions and fuel economy of the engine (as well as a host of other parameters). Gathering data from dozens of different sensors, the ECU knows everything from the coolant temperature to the amount of oxygen in the exhaust. With this data, it performs millions of calculations each second, including looking up values in tables, calculating the results of long equations to decide on the best spark timing and determining how long the fuel injector is open. The ECU does all of this to ensure the lowest emissions and best mileage. See How Fuel Injection Systems Work for a lot more detail on what the ECU does.

  AVC ECU

Friendly Service

Customers often complain that no-one is really interested in them at the large dealerships - we believe in giving a highly personal service and going the extra mile to help. We think you'll notice the difference straight away