A4 Quattro Wagon L4-2.0L Turbo (CAEB) (2009)
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End diagnosis and switch ignition off.
If the specified value was not obtained:
Checking internal resistance
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Disconnect the Engine Speed (RPM) Sensor (G28 ) electrical harness connector.
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Using a multimeter, check the Engine Speed (RPM) Sensor (G28) terminals 1 to 2 for resistance.
Specified value: 450 to 1200 ohms
If the specified value is not obtained:
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Replace the Engine Speed (RPM) Sensor (G28).
If the specified values are obtained:
Checking wiring
If the manufacturers test box is being used, perform the following step.
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Install the test box.
If the manufacturers test box is not being used, perform the following step.
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Remove the Motronic Engine Control Module (ECM) ( J623).
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Using a multimeter, check the Engine Speed (RPM) Sensor (G28) electrical harness connector terminals to the Motronic Engine Control Module
(ECM) (J623) electrical harness connector T60 terminals for an open circuit.