Circuit Inspection

Courtesy of KIA MOTORS AMERICA, INC.

Courtesy of KIA MOTORS AMERICA, INC.

Courtesy of KIA MOTORS AMERICA, INC.

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/S1) connector	2 (power)	Chassis ground	-	B+
	HO2S (B1/S1) connector	5 (heater)	Chassis ground	-	Approx. 3.5V
Ignition "OFF". Disconnect the electrical connector (s) from the concerned component.	HO2S (B1/S1) connector	5 (heater)	Chassis ground	-	∞ (infinity)Ω

Good

No Good

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