Circuit Inspection

Courtesy of KIA MOTORS AMERICA, INC.

Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component. Ignition "ON".	HO2S (B1/S2) harness connector	3 (power)	Chassis ground	-	Approx. 12V
	HO2S (B1/S2) harness connector	4 (heater)	Chassis ground	-	Approx. 2.5V

Good

No Good

Repair open or short in circuit and then go to "VERIFICATION OF REPAIR " procedure.