This demonstration shows VAG-COM used on a car to diagnose a problem with the ABS system. Various tests and procedures are shown including

• It demonstrates reading fault codes and saving the displayed fault code to a file.
• The code is cleared and after rechecking is found to have immediately re-occured. This indicates the fault is present on the car so further testing is shown
• Next the demonstration shows how the output from each wheel speed sensor is measured and displayed by the software as the car is driven a short distance by an assistant.
• The speed signal from each sensor is shown in the measuring blocks and the output can be seen to count up from 0 kph to approximately 10 kph on three wheels while one wheel remained at 0 kph.
• The output is also shown using the VAG-Scope tool which is included on the CD. This demonstrates how the wheel speeds can be recorded and viewed after a short drive when there is no assistant available to drive the car.
• Finally the ABS pump, brake pedal switch and modulator valve block are tested using the output tests part of the tool.

Click here to view the demo movie (440kb)