July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Component Inspection

Inspection Condition	(+) Probe		(-) Probe		Reference
Inspection Condition	Connector	Terminal	Connector	Terminal	Reference
Ignition "ON", engine "ON".	High pressure fuel pump connector	2 (high)	Chassis ground	-	Figure 1 below
Ignition "ON", engine "ON".	High pressure fuel pump connector	1 (low)	Chassis ground	-	Figure 1 below
Ignition "ON", engine "ON".	FRPS harness connector	2 (signal)	Chassis ground	-	Figure 2 below

G13334649

Courtesy of KIA MOTORS AMERICA, INC.

G13334650

Courtesy of KIA MOTORS AMERICA, INC.

Good

Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF REPAIR " procedure.

No Good

Carefully re-do this troubleshooting guide steps.
If no problems were found with the circuits or connectors, replace the fuel rail pressure sensor or high pressure fuel pump and go to "VERIFICATION OF REPAIR " procedure.