S5 Quattro Coupe V8-4.2L (CAUA) (2009)
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Switch the ignition on.
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Using a Multimeter, check the following wiring connections for voltage.
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Switch the ignition off.
If the specification is not 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). 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 Throttle Position (TP) Sensor (G79)/Accelerator Pedal Position Sensor 2 (G185) electrical harness connector
terminals to the Motronic Engine Control Module (ECM) (J623) electrical connector T94 for resistance.
Specified value: 1.5 ohms.
If the specification was not obtained:
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Check the wiring for an open circuit, a short circuit to Battery positive (+) or Ground (GND).