Component Inspection

Check FLS resistance
1. IG "OFF" and Disconnect Fuel Sender & Fuel Pump Motor connector.
2. Remove fuel sender from fuel tank and measure the resistance of Fuel sender while lifting up and down the fuel level float.
  
  Fig 1: Measuring Resistance Of Fuel Sender While Lifting Up And Down Fuel Level Float
  Courtesy of HYUNDAI MOTOR AMERICA
3. Does the resistance of FLS change as lifting up and down the fuel level float?
  YES
  - Substitute with a known - good PCM and check for proper operation. If the problem is corrected, replace PCM and go to "VERIFICATION OF VEHICLE REPAIR " procedure.
  NO
  - Substitute with a known - good Fuel Sender and check for proper operation. If the problem is corrected, replace Fuel Sender and go to "VERIFICATION OF VEHICLE REPAIR " procedure.