Test conditions
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2005 Volkswagen GTI, 2004 Volkswagen Jetta, 2004 Volkswagen GTI, 2003 Volkswagen Jetta, and 2003 Volkswagen GTI. However, it is still accessible from the selected car via links, so may be relevant.
- Vacuum lines and hose connections free of leaks.
- Pressure hose for secondary air injection pump motor not blocked or kinked.
- Vacuum lines not blocked or kinked.
- No DTC stored in DTC memory: → 01 ON BOARD DIAGNOSTIC (OBD)
- Perform output Diagnostic Test Mode (DTM): → 01 ON BOARD DIAGNOSTIC (OBD)