A8 Quattro Sedan V8-4.2L (BGK) (2006)
Fuel Filler Cap Sensor / Switch: 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 screwed on, the reed contact switches and triggers an indication on the display in instrument cluster.
-
Check the following items in order with a lighted display:
-
Proper connector flange cap (recognized by: with magnet (arrow)
-
Connector flange cap is fully screwed on
-
Switch -1- is fully inserted at fuel filler tube
-
Electrical fault in switch. Checking.
-
Faulty wiring connection to instrument cluster (check according to wiring diagram)
Electrical test for Fuel Tank Lock Switch -F314-
-
Rear right wheelhousing liner, removing:
-
Disconnect electrical harness connector -2-.