S4 V8-4.2L (BHF) (2004)
Engine Speed Sensor: Testing and Inspection
Engine Speed (RPM) Sensor -G28-, Checking
Recommended special tools and equipment
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V.A.G 1526A multimeter
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V.A.G 1594A connector test kit
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V.A.G 1598/31 test box
NOTE: The engine speed (RPM) sensor -G28- detects RPM and reference marks. The engine cannot be started without a signal from the engine speed
(RPM) sensor -G28-. If the engine speed (RPM) sensor -G28- signal fails while the engine is running, the engine will stop immediately.
Test requirement:
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Ignition switched off.
Procedure
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Before performing test, check sensor for proper installation and proper fitting.