Volkswagen Passat 1995 Official Factory Repair Manual page 2190

Secondary Air Injection (AIR) system
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- Disconnect vacuum hose -1- to combination valve
at Secondary Air Injection (AIR) Solenoid Valve -
N112-.
- Connect hand vacuum pump ((V.A.G 1390) at
vacuum hose -1- to combination valve.
- Disconnect pressure hose at Secondary Air
Injection (AIR) pump motor -2- and blow into it with
light pressure.
Combination valve must close.
- Operate vacuum pump.
Combination valve must open.
If the combination valve does not open or it is
constantly open:
- Replace combination valve
13 .
- Erase DTC memory of Engine Control Module
(ECM) Page ST-25
Reset/erase diagnostic data.
- Generate readiness code
Page 18 of 18
Page 26-14 , item
, Diagnostic mode 4:
Page ST-50 .
26-28
12/6/2004