A8L V8-4.2L (BFM) (2004)
Fuel Filler Cap Warning Indicator: Testing and Inspection
Fuel Tank Lock Switch -F314-
Fuel Tank Lock Switch -F314- consists of a reed contact on fuel filler tube and a connector flange cap with an embedded magnet. With a connector
flange cap that is not fully bolted on, the reed contact switches and triggers an indication on the display in instrument cluster.
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Check the following items in order with a lighted display:
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Proper connector flange cap (recognized by: with magnet -arrow-)
^
Connector flange cap is fully bolted on
^
Switch -1- is fully inserted at fuel filler tube
^
Electrical fault in switch.
^
Malfunctioning wiring connection to instrument cluster (check according to wiring diagram)
Electrical test for Fuel Tank Lock Switch -F314-
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Remove rear right wheel housing liner:
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Disconnect electrical harness connector-2-.