Volkswagen Passat 1995 Official Factory Repair Manual page 859

Motronic fuel injection system, servicing
http://ebahn.bentleypublishers.com/vw/servlet/Display?action=Goto&type=repair&id=VW...
If no speed is indicated:
- Disconnect 3-pin harness connector
from sensor -1-.
- Switch ignition on.
- Check voltage between connector
terminals 1 and 3.
Specification: Min. 9 volts
- Switch ignition off.
- Reconnect harness connector.
If no voltage was present:
- Check wiring according to wiring
diagram.
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