Circuit Inspection

Courtesy of KIA MOTORS AMERICA, INC.

Courtesy of KIA MOTORS AMERICA, INC.

Inspection Condition	(+) Probe		(-) Probe		Specification
	Connector	Terminal	Connector	Terminal
Disconnect the electrical connector(s) from the concerned component. Ignition "ON".	MCU (HPCU) connector	4/5/6 (power)	Chassis ground	-	B+
	MCU (HPCU) connector	73 (IG3)	Chassis ground	-	B+
	MCU (HPCU) connector	1/2/3 (ground)	Chassis ground	-	0V

Good 

• Go to "CAN signal waveform inspection" procedure.

No Good 

• Repair as necessary and then go to "VERIFICATION OF REPAIR " procedure.

Inspection Condition	(+) Probe		(-) Probe		Specification
	Connector	Terminal	Connector	Terminal
Ignition "ON".	ECM connector	55 (P-CAN High)	ECM connector	77 (P-CAN Low)	Fig 1

Good 

• Go to "CAN resistance inspection" procedure.

No Good 

• Repair as necessary and then go to "VERIFICATION OF REPAIR " procedure.

Inspection Condition	(+) Probe		(-) Probe		Specification
	Connector	Terminal	Connector	Terminal
Ignition "OFF". Disconnect the battery (-) cable. Wait for approx. 4min.	ECM connector	55 (P-CAN High)	ECM connector	77 (P-CAN Low)	Approx. 60Ω

Good 

• Go to "CAN line inspection" procedure.

No Good 

• Repair as necessary and then go to "VERIFICATION OF REPAIR " procedure.

Inspection Condition	(+) Probe		(-) Probe		Specification
	Connector	Terminal	Connector	Terminal
Ignition "OFF". Disconnect the battery (-) cable. Disconnect the electrical connector(s) from the component.	ECM connector	55 (P-CAN High)	TCM connector	44 (P-CAN High)	Approx. below 1Ω
	ECM connector	77 (P-CAN Low)	TCM connector	45 (P-CAN Low)	Approx. below 1Ω

Good 

• Go to "COMPONENT INSPECTION " procedure.

No Good 

• Repair as necessary and then go to "VERIFICATION OF REPAIR " procedure.