Fault memory interrogation
To interrogate the fault memory, a VAG 1551 fault code reader and a VAG 1551/3 wire are required.
1. Connect the VAG 1551 fault code reader (V.A.G 1552) and by typing «01» «Address word», select the engine control unit. The engine must be running at idle. Turn on the printer of the fault code reader, the signal light should light up. In cases where the engine does not start, turn on the ignition. The display should show the following information:
2. Dial «02» to select a function «Fault memory interrogation» and confirm by pressing the button «Q». The display should show the following information:
If one or more faults are stored
3. Stored faults are displayed and printed one by one. After reading them, the following information should appear on the display:
If there are no faults in the memory
4. Click «→». The display should show the following information:
5. Click «06» to select a function «Completion of diagnostics» and confirm by pressing the button «Q».
Clearing the fault memory
6. Connect the VAG 1551 fault code reader (V.A.G 1552) and by typing «01» «Engine electronics», select the engine control unit. The engine must be running at idle. The display should show the following information:
7. Click «02» to select a function «Fault memory download call» and confirm by pressing the button «Q». If there are one or more faults in the memory, they will be displayed in turn. After displaying the faults loaded in the memory, the following information should appear on the display:
8. Dial «05» to select a function «Clearing the fault memory» and confirm by pressing the button «Q». The display should show the following information:
9. If the fault memory is not cleared, it means that it is being cleared. Click «→». The display should show the following information:
10. Click «06» to select a function «Output Completion» and confirm by pressing the button «Q».
11. Carry out a test run. Then read the fault memory again, in which nothing should appear.
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