display AUDI A4 1998 B5 / 1.G AEB ATW Engines Secondary Air System Workshop Manual

26-36


Electrical Wiring Diagrams, Troubleshooting & Component Locations
Repair Manual, Fuel Supply System, Repair Group 20

Checking activation
Check wire connection from terminal 1 of connector via fuse S234 (in
fuse holder, socket 34) to Fuel Pump (FP) relay for open circuit: Check Fuel Pump (FP) relay

- Connect VAG1527B voltage tester between terminals 1 and 2 using
test leads from VAG1594A.
- Connect VAG1551 scan tool.
- Initiate output Diagnostic Test Mode (DTM) and activate Secondary Air
Injection (AIR) solenoid valve -N112-.
Output Diagnostic Test Mode Secondary Air Inj. Solenoid Valve -N112

Indicated on display

LED must blink.
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