Circuit Inspection

WARNING: This page is about a different car, the 2024 Kia Sorento. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of KIA MOTORS AMERICA, INC.

Courtesy of KIA MOTORS AMERICA, INC.

Module Circuit Inspection
Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component.	4WD ECU connector	10 (power)	Chassis ground	-	B+
	4WD ECU connector	9 (ground)	Chassis ground	-	Approx. below 1Ω
Disconnect the electrical connector(s) from the concerned component. Ignition "ON".	4WD ECU connector	7 (ON/START)	Chassis ground	-	B+

Good

Go to "CAN communication circuit Inspection (P-CAN)" procedure.

No Good

Repair as necessary and then Go to "Verification Of Repair " procedure.

CAN communication circuit Inspection (P-CAN)
Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Ignition "ON".	4WD ECU connector	17 (P-CAN high)	Chassis ground	-	Fig.1
Ignition "ON".	4WD ECU connector	18 (P-CAN low)	Chassis ground	-	Fig.1
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component.	4WD ECU connector	17 (P-CAN high)	Chassis ground	-	∞ (infinity)Ω
	4WD ECU connector	18 (P-CAN low)	Chassis ground	-	∞ (infinity)Ω
	4WD ECU connector	17 (P-CAN high)	ICU connector	17 (P-CAN high)	Approx. below 1Ω
	4WD ECU connector	18 (P-CAN low)	ICU connector	18 (P-CAN low)	Approx. below 1Ω
Ignition "OFF". Disconnect the auxiliary battery (-) connector. Disconnect the electrical connector(s) from the concerned component.	4WD ECU connector	17 (P-CAN high)	4WD ECU connector	18 (P-CAN low)	Approx. 60Ω

Courtesy of KIA MOTORS AMERICA, INC.

Good

Go to "CAN communication circuit Inspection (C-CAN)" procedure.

No Good

Repair as necessary and then Go to "Verification Of Repair " procedure.

CAN communication circuit Inspection (C-CAN)
Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component.	ICU connector	20 (C-CAN high)	IEB module connector	4 (C-CAN high)	Approx. below 1Ω
	ICU connector	19 (C-CAN low)	IEB module connector	5 (C-CAN low)	Approx. below 1Ω
	IEB module connector	4 (C-CAN high)	Chassis ground	-	∞ (infinity)Ω
	IEB module connector	5 (C-CAN low)	Chassis ground	-	∞ (infinity)Ω
Ignition "ON".	IEB module connector	4 (C-CAN high)	Chassis ground	-	Fig.2
Ignition "ON".	IEB module connector	5 (C-CAN low)	Chassis ground	-	Fig.2
Ignition "OFF". Disconnect the auxiliary battery (-) connector. Disconnect the electrical connector(s) from the concerned component.	IEB module connector	4 (C-CAN high)	IEB module connector	5 (C-CAN low)	Approx. 60Ω

Courtesy of KIA MOTORS AMERICA, INC.

Good

Fault might be intermittent and caused either by poor contact in connectors or wiring harness, or it has been repaired and control module memory is not cleared yet. Thoroughly check terminal of battery, all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage.
Repair or replace as necessary and Go to "Verification Of Repair " procedure.

No Good

Repair open or short in circuit and then Go to "Verification Of Repair " procedure.
If no problems were found with the circuits or connectors, replace the 4WD ECU and Go to "Verification Of Repair " procedure.