Numerous control devices in the Audi A4 are diagnostic capable. Here we should name the injection and ignition control unit, anti-lock system, EDS, airbag or automatic climate control installation. Such a control unit is capable of diagnosing if it has a memory for storing information about faults, in which all malfunctions are stored during the movement. The control unit can be connected to a reader in the workshop via a diagnostic socket at the rear of the center console.
Use
Properly used, this works like this: the driver drives his Audi to the workshop with which he has a contract, and before any work begins, the car is connected to a fault reading device. As a first step, the device prints out a complete fault report, which prints the contents of the databases of all devices capable of diagnosing.
In this case, the tester, using the appropriate display, guides the mechanic through his program. In the end, without any doubt, it turns out where the repair should be carried out.
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