R8 Quattro Coupe V10-5.2L (BUJ) (2010)
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Switch the ignition on.
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Using a Multimeter, check the Secondary Air Injection Sensor 1 (G609) for voltage.
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Switch the ignition off.
If the specified values are obtained:
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Replace the Secondary Air Injection Sensor 1 (G609).
If the specified values are not 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 Engine Control Module (ECM) (J623). Refer to appropriate repair information.
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Using a Multimeter, check the Secondary Air Injection Sensor 1 (G609) electrical harness connector terminals to the Engine Control Module
(ECM) (J623) electrical harness connector T94 terminals for an open circuit.