R8 Quattro Coupe V10-5.2L (BUJ) (2010)
Checking internal resistance
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Using a multimeter, check the Engine Speed (RPM) Sensor (G28) terminals 2 to 3 for resistance.
Specified value: 730 to 1000 ohms (at approx. 20° C)
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Using a multimeter, check the Engine Speed (RPM) Sensor (G28) terminals 1 to 2 and 1 to 3 for short circuits.
Specified value: infinite (infinity)
If any of the specified values are not obtained:
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Replace the Engine Speed (RPM) Sensor (G28). Refer to appropriate repair information.
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. Refer to appropriate repair information.
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). Refer to appropriate repair information.
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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 T60a terminals for an open circuit.