Section 12 (Engine Controls - Tests W/Codes): Introduction
WARNING: This page is about a different car, the 1993 Volkswagen Cabriolet. However, it is still accessible from the selected car via links, so may be relevant.
If no faults were found while performing preliminary inspection procedures, proceed with self-diagnostics. If no fault codes or only pass codes are present after entering self-diagnostics, proceed to TESTS W/O CODES article for diagnosis by symptom (i.e., ROUGH IDLE, NO START, etc.).
NOTE:
Scan Tester (VAG 1551) must be used to make full use of the self-diagnostic system capabilities.