TT Quattro Roadster L4-1.8L Turbo (AMU) (2002)
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Ignition Coil: Testing and Inspection
Ignition Coils With Power Output Stages, Checking
Special tools and equipment
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VAG1526A
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VAG1527B
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VAG1594A
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VAG1598/31
NOTE: The ignition coil and power output stage are combined in one complete component.
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Recognize a non-functional or misfiring cylinder as follows:
NOTE: Non-functioning or misfiring cylinders are recognized via output Diagnostic Test Mode (DTM).
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Disconnect connectors from fuel injectors in sequence with engine running and observe engine operation.
or
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Compare spark plugs from all cylinders to each other. Look for fouled electrodes.
If faulty cylinder is recognized:
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Switch spark plug from faulty cylinder with one from another cylinder.
If malfunction follows the spark plug:
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Replace spark plug.
If malfunction remains at original cylinder:
