A8L Quattro Sedan V8-4.2L (AUX) (2001)
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Operate starter.
Specification: approx. battery voltage
If the specification is not obtained:
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Check continuity of wiring from socket 1 to fuel pump relay via fuse. Repair open circuit if necessary.
If the specification is obtained:
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Check output stage. See: Power Output Stages For Ignition Coils, Checking