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.

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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".	E-comp connector	6 (interlock power)	Chassis ground	-	B+
Ignition "OFF". Disconnect auxiliary battery (-) cable. Disconnect the electrical connector(s) from the concerned component.	E-comp connector	3 (interlock ground)	Chassis ground	-	Approx. below 1Ω

Good

Go to "DC Fuse Inspection" procedure.

No Good

Repair open or short in circuit and then Go to "Verification Of Repair " procedure.

DC Fuse Inspection
Inspection Procedure	Reference
Ignition "OFF". Check DC Fuse condition in the HPCU.	Fig.1

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Good

Go to "Interlock Line inspection" procedure.

No Good

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

Interlock Line inspection
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".	E-comp connector	6 (interlock power)	Chassis ground	-	B+
	E-comp connector	3 (interlock ground)	Chassis ground	-	Approx. 0V
Ignition "ON".	E-comp connector	6 (interlock power)	Chassis ground	-	Fig.1
Ignition "ON".	E-comp connector	3 (interlock ground)	Chassis ground	-	Fig.1

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Good

Go to "CAN Communication Line Inspection" procedure.

No Good

Repair open or short in circuit and then Go to "Verification Of Repair " procedure.

CAN Communication Line Inspection
Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Ignition "OFF". Disconnect auxiliary battery (-) cable. Disconnect the electrical connector(s) from the concerned component.	E-comp connector	5 (Climate CAN high)	Chassis ground	-	∞ (infinity)Ω
	E-comp connector	2 (Climate CAN low)	Chassis ground	-	∞ (infinity)Ω
	E-comp connector	5 (Climate CAN high)	A/C control module connector	37 (Climate CAN high)	Approx. below 1Ω
	E-comp connector	2 (Climate CAN low)	A/C control module connector	38 (Climate CAN low)	Approx. below 1Ω
Ignition "ON".	E-comp connector	5 (Climate CAN high)	Chassis ground	-	Fig.1
Ignition "ON".	E-comp connector	2 (Climate CAN low)	Chassis ground	-	Fig.1

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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 auxiliary 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

Carefully re-do this troubleshooting guide steps.
If no problems were found with the circuits or connectors, replace the E-comp and Go to "Verification Of Repair " procedure.