Volkswagen Passat 1995 Official Factory Repair Manual page 1314

Components of engine, checking
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Engine speed (RPM) sensor,
checking
Function
The Engine Speed (RPM) Sensor -G28-
detects engine speed and reference marks.
Without an engine speed signal, the engine
will not start. If the engine speed signal fails
while the engine is running, the engine will
stop immediately.
Recommended special tools and
equipment
V.A.G1526 Multimeter or V.A.G1715
Multimeter
V.A.G1594 Connector test kit
Wiring diagram
Page 37 of 62
24-61
6/12/2004