Fuel Gauge Sender

Using an ohmmeter, measure the resistance between terminals 1 and 2 of sender connector (A) at each float level.

Fig 1: Measuring Resistance Between Terminals 1 & 2 Of Sender Connector At Float Level
Courtesy of KIA MOTORS AMERICA, INC.
Also check that the resistance changes smoothly when the float is moved from "E" to "F".

RESISTANCE SPECIFICATION

CAUTION: If the height resistance is not within specifications, replace the fuel sender as an assembly.

After completing this test, wipe the sender dry and reinstall it in the fuel tank.