audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

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Engine Speed Sensor: Testing and Inspection
With Manufacturer's Scan Tool

Engine Speed (RPM) Sensor -G28-, Checking

Special tools and equipment

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VAG 1526 A

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VAG 1594 A

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VAG 1598/31

NOTE:  The engine speed sensor is a combined speed sensor and reference mark sensor. The engine cannot be started without a signal from the Engine
speed (RPM) sensor -G28-. If the signal from the Engine speed (RPM) sensor -G28- fails while the engine is running, the engine will cut out
immediately.

Test sequence

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Before performing test, make sure that sensor is correctly installed and firmly seated.

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Disconnect connector to engine speed sensor.

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