S4 Quattro Cabriolet V8-4.2L (BHF) (2008)
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: Computers and Control
Systems/Engine Control Module/Service and Repair.
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Using a Multimeter, Check the Ignition Coil electrical harness connector to the Motronic Engine Control Module (ECM) (J623) electrical harness
connector T60 for an open circuit.
Specified value: 1.5 ohms Max.
If the specified value was not obtained:
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Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground (GND).
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Check the wiring connection for damage, corrosion, lose or broken terminals.
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If necessary, repair the faulty wiring connection.
If the specified values were obtained:
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Replace Motronic Engine Control Module (ECM) ( J623).
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Connect the Ignition Coils with Power Output Stage (N70, N127, N291, N292, N323, N324, N325, N326) electrical harness connectors - arrows
- to the Ignition Coils with Power Output Stage (N70, N127, N291, N292, N323, N324, NM325, N326).