A4 Sedan V6-2.8L (AFC) (1996)
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Connect voltage tester between Ground (GND) and each terminal of fuse 29, in sequence.
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Use scan tool "Output Diagnostic Test Mode" function 03 to trigger fuel pump relay -J17-.
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Fuel pump relay must be felt and heard ("click")
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Voltage tester must light up
If voltage tester does not light up:
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Repeat test on the other terminal for fuse 28.
If voltage tester still does not light up:
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Check fuse 29 wiring for continuity to terminal 30 (relay position 6) using wiring diagram, correct as necessary.
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Connect voltage tester between Ground (GND) and either terminal for fuse 34.
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Use scan tool "Output Diagnostic Test Mode" function 03 to trigger fuel pump relay -J17-.
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Fuel pump relay must be felt and heard ("click")
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Voltage tester must light up
If the voltage tester does not light up
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Repeat the check using the other fuse 34 terminal.
If the voltage tester still does not light up: