Volkswagen Passat 1995 Official Factory Repair Manual page 2186

Secondary Air Injection (AIR) system
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW.B4.FU08.26.2
- Connect Secondary Air Injection (AIR) Pump
Motor to the B+ and Ground (GND) terminals of
the battery using the respective adapter cables.
The Secondary Air Injection (AIR) Pump Motor
must start up and air must escape at compressed-
air connection (arrow).
If the motor does not start up, or no air or only very
little air escapes:
- Disconnect connection between Secondary Air
Injection (AIR) Pump Motor and battery.
- Replace Secondary Air Injection (AIR) Pump Motor
-V101- Page 26-13
- Erase DTC memory of Engine Control Module
(ECM) Page ST-25
Reset/erase diagnostic data.
- Generate readiness code
If motor starts, and air escapes:
- Disconnect connection between Secondary Air
Injection (AIR) Pump Motor and battery.
Page 14 of 18
, item 1
, Diagnostic mode 4:
Page ST-50 .
26-24
12/6/2004