A8L V8-4.2L (BFM) (2004)
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Connect multimeter between contacts 2 and 3 on connector -A- to measure resistance range.
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If the resistance is 0 Ohms. there is a short circuit. If the resistance is x Ohms. there is an open circuit in the wiring.
Note: To test the maximum and minimum resistance values for "tank full" and "tank empty" remove the Fuel Supply Sensor 3 -G237- and move the
sender float all the way to its top or bottom position.