New Beetle L4-1.8L Turbo (AWV) (2005)
Engine Speed Sensor: Testing and Inspection
Engine Speed (RPM) Sensor, Checking
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
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V.A.G 1526 multimeter or V.A.G 1715 multimeter
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V.A.G 1594 connector test kit
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Wiring diagram
Test requirements
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Ground (GND) connections between engine and chassis must be OK.
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Ignition switched off.
Test sequence
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Disconnect gray 3-pin harness connector -1- leading to Engine Speed (RPM) Sensor -G28-.
Checking resistance
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Check sensor resistance between terminals 2 + 3 at connector to sensor.
Specified value: 730 to 1000 Ohms
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Check sensor for short circuit between terminals 1 + 2 as well as 1 + 3.
Specified value: Infinite Ohms
If specified values are obtained:
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Check wires to control module according to wiring diagram.