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Self-diagnosis
Technical data of self-diagnosis
Equipment
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◆ The data transfer between control unit and fault reader V.A.G 1551 or vehicle system tester V.A.G 1552 is carried out in the operating mode "Rapid data transfer".
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◆ The fault memory is equipped with a non-volatile memory.
Interrogating control unit versions
The control unit version is displayed when the fault reader V.A.G 1551 or the vehicle system tester V.A.G 1552 is connected and engine electronics control unit selected
.
Selectable functions when using the fault reader V.A.G 1551 or V.A.G 1552
The prerequisites for selecting the desired functions can be taken from the following table.
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Function
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Ignition switched on
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Engine idling
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01
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Interrogating control unit version
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yes
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yes
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02
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Interrogating fault memory
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yes
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yes
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03
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Final control diagnosis
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yes
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yes
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04
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Basic setting
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no
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yes
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05
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Erasing fault memory
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yes
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yes
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06
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Ending output
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yes
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yes
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07
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Coding control unit
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yes
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no
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08
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Read measured value block
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yes
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yes
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