Component Inspection

■ Perform High Pressure Fuel Pump Actuation Test 

1. Connect KDS/GDS to Data Link Connector (DLC).
2. Ignition "ON" and Engine "OFF".
3. Perform "Actuation Test"  for High Pressure Fuel Pump.

Fig 1: Screen Display - High Pressure Fuel Pump Control Actuation Test

Courtesy of KIA MOTORS AMERICA, INC.

■ High Pressure Fuel Pump Inspection 

1. Ignition "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)

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■ Fuel Pressure Regulator Inspection 

Inspect Fuel Pressure Regulator performance by measuring voltage and current.

1. Back probe and Using an oscilloscope measure voltage by 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 2: Screen Display - Engine Idle After Warm Up

Courtesy of KIA MOTORS AMERICA, INC.

Fig 3: Screen Display - Approx. 2000 RPM

Courtesy of KIA MOTORS AMERICA, INC.

■ Confirm Part Inspection 

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.