Circuit Inspection

G14974571

Courtesy of KIA MOTORS AMERICA, INC.

CAN Communication Line Inspection
Inspection Condition	(+) Probe		(-) Probe		Reference
Inspection Condition	Connector	Terminal	Connector	Terminal	Reference
Ignition "ON".	IBU connector	4 (P-CAN high)	Chassis ground	-	Fig.1
Ignition "ON".	IBU connector	3 (P-CAN low)	Chassis ground	-	Fig.1
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component.	IBU connector	4 (P-CAN high)	IBU connector	3 (P-CAN low)	Approx. 60Ω
	ECM (component side)	77 (P-CAN high)	ECM (component side)	60 (P-CAN low)	Approx. 120Ω
	ICU (component side)	19 (P-CAN high)	ICU (component side)	20 (P-CAN low)	Approx. 120Ω
	IBU connector	4 (P-CAN high)	ECM connector	77 (P-CAN high)	Approx. below 1Ω
	IBU connector	3 (P-CAN low)	ECM connector	60 (P-CAN low)	Approx. below 1Ω
Ignition "OFF". Disconnect the battery (-) terminal. Disconnect the electrical connector(s) of all concerned component to the related CAN system.	IBU connector	4 (P-CAN high)	Chassis ground	-	∞ (infinity)Ω
	IBU connector	3 (P-CAN low)	Chassis ground	-	∞ (infinity)Ω

G14974572

Courtesy of KIA MOTORS AMERICA, INC.

Good

Go to "Module Circuit Inspection" procedure.

No Good

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

Module Circuit Inspection
Inspection Condition	(+) Probe		(-) Probe		Reference
Inspection Condition	Connector	Terminal	Connector	Terminal	Reference
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component. Ignition "ON".	IBU connector	2, 4, 12, 16, 18, 32, 33 (power)	Chassis ground	-	B+
	IBU connector	2, 5, 7 (ground)	Chassis ground	-	Approx. below 1Ω

Good

Go to "COMPONENT INSPECTION " procedure.
Repair as necessary and then Go to "VERIFICATION OF REPAIR " procedure.

No Good

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