Main Fuel Gauge Sender

Using an ohmmeter, measure the resistance between terminals 1 and 3 of sender connector (A) at each float level.

Fig 1: Measuring Resistance Between Terminals 1 And 3 Of Sender Connector At Each Float Level Using Ohmmeter
Courtesy of KIA MOTORS AMERICA, INC.

Also check that the resistance changes smoothly when the float is moved from "E" to "F".

Position	Liter (L )	Gal.	Resistance (±2Ω)
Sender (E)	2.8	0.74	200
Warning lamp ON	5.8	1.53	170
1/2	22.3	5.89	66
Sender (F)	41.8	11.04	8

If the height resistance is unsatisfied, replace the fuel sender as an assembly.
CAUTION: After completing this test, wipe the sender dry and reinstall it in the fuel tank.