Repair procedures: Inspection

Connect the GDS to the vehicle's data link connector (DLC).
Check any DTCs and if exist, repair according to the DTC guide.
Check the power supply voltage provided to the fuel pressure sensor (FPS).
Specification: 5V

Fig 1: Checking Power Supply Voltage To Fuel Pressure Sensor
Courtesy of KIA
Check the voltage provided to the fuel pressure sensor (FPS) at idle.
Specification: 1.9 ~ 3.2 V

Fig 2: Checking Voltage To Fuel Pressure Sensor At Idle
Courtesy of KIA

Check the fuel pressure in the low fuel line.

Items	Specification
start	Max. 600 KPa (Max. 6.1 kgf/cm² , Max. 87.0 psi)
in operation	350 ~ 500 KPa (3.5 ~ 5.1 kgf/cm² , 50.7 ~ 72.5 psi)