audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

How to Find Wiring Diagrams|Page 4400 > < How to Find Wiring Diagrams|Page 4398
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Remove cover for electronics box in plenum chamber (arrows).

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Disconnect secondary air pump relay from relay position 1.

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Connect multimeter (voltage measurement range) as follows:

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Specification: approximate battery voltage

If specification is not obtained:
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Perform following tests (marked with dots):

How to Find Wiring Diagrams|Page 4400 > < How to Find Wiring Diagrams|Page 4398