A4 Sedan L4-1.8L Turbo (AWM) (2001)
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Disconnect connector from Secondary Air Injection (AIR) Pump motor -V101- (-arrow-).
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Location: Right front in engine compartment below air filter housing
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Connect voltage tester V.A.G 1527 B between contacts 1 and 2.
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Initiate output Diagnostic Test Mode (DTM) and activate Secondary Air Injection (AIR) Pump relay -J299-.
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LED must flash.
If LED does not flash:
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Carry out following tests:
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Check wiring connection from contact 1 of connector to secondary air injection pump relay (in 3-pin relay carrier in electronic box (plenum
chamber), for open circuit.
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Check wiring connection of contact 2 of connector to Ground for open circuit:
If no fault is found:
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Replace Secondary Air Injection (AIR) Pump motor -V101-.