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

   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.