Work sequence
- Connect scan tool VAG1551 (or VAG1552) using VAG1551 /3 adapter cable.
During test and assembly work Diagnostic Trouble Codes (DTCs) can be detected from other control modules like e.g. connector disconnected. Therefore on completion the DTC memories of all control modules must be checked and erased. To do this:
- Press button 0 twice for address word "Automatic test sequence" and confirm entry with Q button. VAG1551 transmits all known address words one after another.
When a control module answers with its identification the number of stored DTCs appears on the display or "No fault detected".
Any system DTCs that are stored will be displayed one after the other and printed out. The VAG1551 will then transmit the next address word.
The automatic test sequence has ended when following is indicated on display:
| Rapid data transfer HELP Select function XX |
- Erase all DTC memories and then perform a road test.
Observe the valid safety precautions when performing a road test → Safety precautions .
During the road test the following operating conditions must be fulfilled:
- The coolant temperature must exceed 85 ° C.
- When the temperature is reached, the operating conditions Idling, Part throttle, Wide open throttle, Overrun must be attained several times.
- At wide open throttle the speed must exceed 3500 rpm.
- Again check DTC memories of all control modules using "automatic test sequence".
If no DTC is stored:
- Press → -button.
Indicated on display:
| Rapid data transfer HELP Select function XX |
- Press buttons 0 and 6 for function "End output" and confirm entry with Q button.
- Switch off ignition.