volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

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Engine Speed Sensor: Testing and Inspection
With Generic Scan Tool

Check Engine Speed (RPM) Sensor

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

-

VAG1526 multimeter or VAG1715 multimeter

-

VAG1594 connector test kit

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Wiring diagram

Test sequence
Vehicles with engine code AFP

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Disconnect gray 3-pin harness connector (arrow) to the engine speed (RPM) sensor.

Vehicles with engine code BDF

-

Disconnect gray 3-pin harness connector (arrow) to the engine speed (RPM) sensor.

Continuation for all vehicles

With Manufacturer's Scan Tool|Page 3295 > < With Manufacturer's Scan Tool|Page 3293