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-, Testing

Special tools and equipment

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VAG 1526A

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VAG 1594A

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VAG 1598/31

Note:  The Engine speed sensor is a combined speed sender and reference mark sender Without a signal from the -G28- the engine cannot be started. If
the signal from the -G28- fails while the engine is running, the engine will cut out immediately.

Test sequence

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Before carrying out the test, make sure that the sender is correctly installed and firmly seated.

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