S5 Quattro Coupe V8-4.2L (CAUA) (2009)
Specified value: infinite (Infinity).
If the specified value was not obtained:
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Replace Knock Sensor 4 (G199).
If the specified value was 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 Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module, Replacing ] See: Engine Control Module/Service and
Repair/Engine Control Module, Replacing.
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Using a Multimeter, Check the Knock Sensor 4 (G199) electrical harness connector to the Engine Control Module (ECM) (J623) electrical harness
connector T60a for resistance.