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Circuit Inspection

G13807577

Courtesy of KIA MOTORS AMERICA, INC.

Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Ignition "ON". Measure the oscilloscope using the VMI.	AWD ECU connector	17 (P-CAN high)	Chassis ground	-	Fig.1
Ignition "ON". Measure the oscilloscope using the VMI.	AWD ECU connector	18 (P-CAN low)	Chassis ground	-	Fig.1
Disconnect the electrical connector(s) from the concerned component. Ignition "ON".	HECU connector (With EPB)	1, 30, 37 (power)	Chassis Ground	-	B+
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component.	HECU connector (With EPB)	14, 46 (ground)	Chassis Ground	-	Approx. below 1Ω
	AWD ECU connector	17 (P-CAN high)	HECU connector (With EPB)	23 (P-CAN high)	Approx. below 1Ω
	AWD ECU connector	18 (P-CAN low)	HECU connector (With EPB)	22 (P-CAN low)	Approx. below 1Ω
Ignition "OFF". Disconnect the battery (-) terminal. Disconnect the electrical connector(s) from the concerned component.	HECU connector (With EPB)	23 (P-CAN high)	HECU connector (With EPB)	22 (P-CAN high)	Approx. below 60Ω

G13807578

Courtesy of KIA MOTORS AMERICA, INC.

Good

If wiring and connectors are intact and symptoms persist, Check the brake system and replace the HECU if necessary and then Go to "VERIFICATION OF REPAIR " procedure.

No 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, or damage.
Check and repair CAN lines for open circuits or short circuits, Go to "VERIFICATION OF REPAIR " procedure.