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Circuit Inspection

Fig 1: ECM System Circuit

G12325234

Courtesy of KIA MOTORS AMERICA, INC.

INSPECTION PART - O2 SENSOR (UP) CONNECTOR INSPECTION

Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Ignition "OFF". Disconnect the battery (-) cable. Disconnect the electrical connector(s) from the concerned component and ECM.	O2 Sensor (Up) Connector	5 (Control)	Chassis Ground	-	∞ (infinite) Ω
Disconnect the Electrical Connector(s) from the concerned component. Ignition "ON".	O2 Sensor (Up) Connector	4 (Power)	Chassis Ground	-	B+
	O2 Sensor (Up) Connector	5 (Control)	Chassis Ground	-	Approx. 2.5V (Duty)

Good	Go to "COMPONENT INSPECTION " procedure.
No Good	Repair open or short in circuit and then go to "VERIFICATION OF REPAIR " procedure.