A8 Sedan V8-3.7L (AEW) (1997)
Fuel Pump Relay: Testing and Inspection
Fuel Pump Relay, Checking
NOTE: The fuel pump relay is located on the central electrical panel in the right-side footwell, in relay position 6.
Checking voltage supply
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Remove fuel pump relay -J17-.
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Switch ignition on.
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Connect multimeter US 1119 (Fluke 83 or equivalent) and check for voltage between relay terminals:
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28 (B+, terminal 15) and 34 (Ground)
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32 (B+, terminal 30) and 34 (Ground).
Specified value: approx. Battery Positive Voltage (B+)
If voltage is not OK:
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Check wiring for open circuit.
Checking Fuel Pump Relay Actuation