Component Inspection

Inspection Condition	(+) Probe		(-) Probe		Reference
Inspection Condition	Connector	Terminal	Connector	Terminal	Reference
Engine "ON".	FPCV connector	1 (high)	Chassis ground	-	Fig.1
Engine "ON".	FPCV connector	2 (low)	Chassis ground	-	Fig.1
Engine idle, 2500RPM condition after warm up.	FPCV connector	1 (high)	Chassis ground	-	Fig.2
Engine idle, 2500RPM condition after warm up.	FPCV connector	2 (low)	Chassis ground	-	Fig.2

G00599954

Courtesy of KIA MOTORS AMERICA, INC.

Fig.1) Normal waveforms of FPCV at engine idle

G00599955

Courtesy of KIA MOTORS AMERICA, INC.

Fig.2) Normal waveforms of FPCV at 2500RPM

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 FPCV and Go to "VERIFICATION OF REPAIR " procedure.