Component Inspection

Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Ignition "OFF". Disconnect the electrical connector(s) from the component.	Fuel Pressure Regulator component side	1 (High)	Fuel Pressure Regulator component side	2 (Low)	0.49 ± 5%Ω (20° C/68°F)
Ignition "ON" and Engine "ON".	Fuel Pressure Regulator connector	1 (High)	Fuel Pressure Regulator connector	2 (Low)	Fig 1

Fig 1: Screen Display - Normal Signal Waveform Of Fuel Pressure Regulator Valve At Engine Idle

G12689152

Courtesy of KIA MOTORS AMERICA, INC.

Good

Fault might be intermittent and caused either by poor contact in connectors or wiring harness, or it has been repaired and control module memory is not cleared yet. Thoroughly check terminal of battery, all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage. Repair or replace as necessary and then go to "VERIFICATION OF REPAIR " procedure.

No Good

If no problems were found with the circuits or connectors, replace the fuel pressure regulator and go to "VERIFICATION OF REPAIR " procedure.