Fuel Receiver Gauge Malfunction: Description

• The meter ECU (No. 3 meter circuit plate) uses the fuel sender gauge assembly to determine the level of the fuel in the fuel tank. The resistance of the fuel sender gauge will vary between approximately 12 Ω with the float at the full position, and 415 Ω with the float at the empty position. The meter outputs battery voltage through two resistors of 820 Ω that are mounted in parallel inside the meter ECU (No. 3 meter circuit plate). The meter ECU (No. 3 meter circuit plate) measures the voltage between the variable resistor in the fuel sender gauge and the two resistors mounted in parallel in the meter. Voltage measured at this point will vary as the float of the fuel sender gauge is moved. The highest voltage observed should be approximately half of the battery voltage.

HINT: 

The fuel level warning light will come on when the fuel level is below 6.0 liters (6.3 US qts, 5.3 Imp. qts).