S4 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.
If LED does not light:
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Perform the tests marked with dots:
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Check fuse of solenoid valves for camshaft adjustment.
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
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Check wire connection from terminal 1 of connector via fuse S234 (in fuse holder, socket 34) to Fuel Pump (FP) relay for open circuit:
Refer to Electrical Wiring Diagrams, Troubleshooting & Component Locations
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Repair open circuit if necessary.
If no malfunctions are detected:
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Check Fuel Pump (FP) relay.
Checking activation
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Connect VAG1527B voltage tester between terminal 1(+) and 2.
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Initiate output Diagnostic Test Mode (DTM) and activate valve for camshaft adjustment.
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LED must blink