A6 Quattro Sedan V6-2.7L Turbo (APB) (2000)
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Connect VAG1527B voltage tester as follows:
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Operate starter briefly.
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LED must light.
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Check wire connection from terminal 1 to Fuel Pump (FP) relay via fuse for open A circuit.
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
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Repair open circuit if necessary.
If wire connection is OK:
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Check Fuel Pump (FP) relay.
If LED lights:
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Checking activation.
Checking activation
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Connect VAG1527B voltage tester to connector terminals 1 (B+) and 2.
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Initiate output Diagnostic Test Mode (DTM) and activate recirculating valve for turbocharger -N249-.
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LED must blink
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If LED does not blink or if it remains constantly lit:
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Connect VAG1598/31 test box at wiring harness to ECM, do not connect ECM.
