Circuit Inspection

G14808088

Courtesy of KIA MOTORS AMERICA, INC.

Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Ignition "OFF". Disconnect the battery (-) terminal. Disconnect the electrical connector(s) from the concerned component.	HECU connector	23 (P-CAN high)	HECU connector	22 (P-CAN low)	Approx. 60Ω
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component. Ignition "ON".	HECU connector	1, 30 (Memory power)	Chassis ground	-	B+
	HECU connector	37 (ON/START Input)	Chassis ground	-	B+
Ignition "OFF". Disconnect the battery (-) terminal. Disconnect the electrical connector(s) from the concerned component.	HECU connector	14, 46 (ground)	Chassis ground	-	Approx. below 1Ω
Ignition "ON". Connect the VMI and check with the oscilloscope.	HECU connector	23 (P-CAN high)	Chassis ground	-	Fig. 1
	HECU connector	22 (P-CAN low)	Chassis ground	-	Fig. 1

G14808089

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, or damage.
Repair or replace as necessary and then Go to "VERIFICATION OF REPAIR " procedure.

No Good

Carefully re-do this troubleshooting guide steps.
If problem still occurs, replace HECU and then Go to "VERIFICATION OF REPAIR " procedure.

If a module is replaced, perform the relevant "Vehicle S/W Management" procedure.