Test C: Fuel Gage Always Indicates F

Disconnect Fuel Tank Unit connector C409 and jumper harness half of terminal B (PPL) to ground. Turn Ignition Switch to RUN and observe the Fuel Gage.
^ If the Fuel Gage now indicates E, check BLK/WHT (803) wires for an open (see schematic). If wires and ground are OK, replace the Fuel Gage Sender.
^ If the Fuel Gage still indicates F, check the PPL (30) wire for an open (see schematic). If OK, replace the Instrument Cluster.