Component Inspection

1. Connect GDS to Data Link Connector (DLC).
2. IG KEY "ON" & ENG "OFF".
3. Perform "Actuation Test  " for High Pressure Fuel Pump.
   Fig 1: High Pressure Fuel Pump Control Actuation Test Screen

   Courtesy of KIA MOTORS AMERICA, INC.

1. IG Key "OFF".
2. Disconnect High Pressure Fuel Pump connector.
3. Measure resistance between power and control terminal of the High Pressure Fuel Pump. (Component Side)

   Specification:  Approx. 0.6Ω at 30°C (86 °F)

   Fig 2: Resistance Of FPR

   Courtesy of KIA MOTORS AMERICA, INC.

Fuel Pressure Regulator performance check by measuring voltage and current.

1. Back probe and measure voltage by using and connecting channel A (+) voltage probe to High side and channel A (-) voltage prove to Low side.
2. Measure operation current by using Low Current Sensor Module.
   Fig 3: Fuel Pressure Regulator Waveforms - Idle

   Courtesy of KIA MOTORS AMERICA, INC.
   Fig 4: Fuel Pressure Regulator - 2000 RPM

   Courtesy of KIA MOTORS AMERICA, INC.

1. Does the High Pressure Fuel Pump operate properly or is the measured value within specification? (Check variation)

   YES 

   • Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

   NO 

   • Carefully re-do this troubleshooting guide steps.
   • If problem still occurs, replace FPR and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.