volkswagen Workshop Repair Guides

Volkswagen Workshop Service and Repair Manuals

With Manufacturer's Scan Tool|Page 3733 > < With Manufacturer's Scan Tool|Page 3731
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Engine Speed Sensor: Testing and Inspection
With Generic Scan Tool

Check Engine Speed (RPM) sensor

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

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VAG1526 multimeter or VAG1715 multimeter

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VAG1594 connector test kit

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Wiring diagram

Test requirements

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The respective fuses of Diesel-Direct fuel injection system must be OK:

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Battery voltage must be at least 11.5 Volts.

Test sequence

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Switch ignition off.

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Disconnect harness connector for engine speed sensor, item no. 16 , Overview of component locations.

Vehicles with 80-pin control module

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Measure resistance between connector terminals 1 + 2.
Specified value: 1.0 to 1.5 k Ohms

Vehicles with 121-pin control module

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