Volkswagen Passat 1995 Official Factory Repair Manual page 477

Secondary Air Injection (AIR) system
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Vehicles from 08.95
- Switch ignition off.
- Connect VAG 1598/18 test box to
ECM wiring harness.
- Disconnect pressure hose from
combi-valve -1-.
- Switch ignition on.
- Bridge test box sockets 1 and 06
using adapter cables from VW 1594
connector test kit.
- Bridge test box socket 49 and
Ground (GND) using adapter cables
from VW 1594 connector test kit.
Secondary air injection pump motor
must run and air must exit the
connecting hose.
If the motor runs, but no air exits the
hose:
- Check hoses and lines.
- If necessary, replace secondary air
injection pump motor.
If the motor does not run:
- Disconnect 2-pin connector from
secondary air injection pump motor
V101.
- Connect VAG 1527B voltage tester
to 2-pin connector using adapter
cables from VAG 1594 test kit.
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5/12/2004