Repair Procedures: Inspection

[Fuel pump] 

1. Turn ignition switch OFF and disconnect the battery negative (-) terminal.
2. Remove the fuel pump assembly.
3. Check motor operation by fuel pump connector (A) connecting power(No. 2) and ground(No. 4)

Fig 1: Check Fuel Pump Motor Operation Using Battery

Courtesy of KIA MOTORS AMERICA, INC.

[Fuel Sender] 

1. Turn ignition switch OFF and disconnect the battery negative (-) terminal.
2. Remove the fuel pump assembly.
3. Using an ohmmeter, measure the resistance between terminals 1 and 3 of sender connector (A) at each float level.
   Fig 2: Measure Resistance Between Terminals 1 And 3 Of Sender Connector

   Courtesy of KIA MOTORS AMERICA, INC.

   Pin No.	description
   1	Fuel sender signal
   2	Fuel pump (+)
   3	Fuel sender ground
   4	Fuel pump (-)

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

   Position	Resistance (Ω)	Capacity (λ)
   E	197 ~ 203	3.0
   1/2	64.2 ~ 68.2	24.6
   F	6 ~ 10	49.0