Test sequence
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 1999 Volkswagen Jetta, 1998 Volkswagen Jetta, 1997 Volkswagen Passat, 1997 Volkswagen Jetta, and 1996 Volkswagen Passat. However, it is still accessible from the selected car via links, so may be relevant.
- Switch ignition on.
- Disconnect vacuum hose -5- from EGR two-way valve - N161- (item -1-). See Fig 1 .
- Disconnect vacuum hose -3- from EGR two-way valve and blow into hose.
- The EGR two-way valve must allow air to pass to vacuum pump connection (flow not blocked)
- Disconnect 2-pin harness connector -2- from EGR two-way valve -1-.
- Blow again into vacuum hose -3-.
- The vacuum connection to vacuum pump must be closed and outlet to outside (arrow) open