1) Remove the fuel sub level sensor.
2) Using suitable lead wires and a 2 — 6 Ω resistor, short circuit the fuel sub level sensor connector to chassis ground.
3) Turn the ignition switch to ON.
Terminals
(R59) No. 1 — Chassis ground:
Does the fuel gauge in the combination meter indicate FULL mark?
Inspect harnesses for open or shorting condition. If there is no fault, replace the meter case assembly.