A4 Quattro Sedan L4-2.0L Turbo (CAEB) (2009)
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Using a diode test lamp, check the Ignition Coil electrical harness connector terminals 2 to 3 for voltage.
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Operate the starter.
The LED should flicker.
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Switch the ignition off.
If the LED flickers and the voltage was OK:
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Replace the faulty Ignition Coils with Power Output Stage (N70, N127, N291, N292). Refer to appropriate service manual.
If the LED does not flicker:
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).
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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.
