wiring diagram AUDI A4 1997 B5 / 1.G AHA Engine Camshaft Adjustment System Checking Workshop Manual

28-35

Checking voltage supply of valves for
camshaft adjustment

- Disconnect harness connector from valve.

If LED does not light up, conduct the following tests:
Electrical Wiring Diagrams, Troubleshooting & Component Locations
binder - Connect LED tester VAG1527 between engine ground and terminal 1
of connector (B+).
- Crank starter for several seconds (engine can start).
LED in voltage tester must light up.
- Check fuse for valves for camshaft adjustment.
- Check wiring from terminal 1 on 2-pin connector to fuse for continuity
per wiring diagram. - Check fuel pump relay and signal to relay page 24
-95
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