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: Checking Fuel Gauge Sender

Courtesy of HYUNDAI MOTOR CO.

FLOAT LEVEL DESCRIPTION

NO	Description	NO	Description
1	Gauge signal GND	4	Fuel pump (+)
2	-	5	Fuel pump GND
3	Gauge signal (+)	-	-

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

[General]

RESISTANCE SPECIFICATION

Position	Liter (Ω)	U.S.gal.	Resistance (Ω)
Sender (E)	4.5	1.19	184
Warning lamp ON	6.2	1.64	156
1/2	23.5	6.2	66.2
Sender (F)	47	12.4	8

[Supervision]

RESISTANCE SPECIFICATION

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.