Circuit Inspection

WARNING: This page is about a different car, the 2017 Kia Niro. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Hybrid Power Control Unit System Circuit

Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: Hybrid Power Control Unit Connector Terminals

Courtesy of KIA MOTORS AMERICA, INC.

INSPECTION PART - HYBRID POWERTRAIN CONTROL UNIT (HPCU)

Inspection Condition	(+) Probe			(-) Probe			Specification
Inspection Condition	Channel	Connector	Terminal	Channel	Connector	Terminal	Specification
Ignition "OFF". Disconnect HPCU, A/C control module connector.	CH-A	HPCU	Pin No. 78 (P-CAN High)	CH-A	A/C control module	Pin No. 33 (P-CAN High)	Approx. below 1Ω
	CH-B	HPCU	Pin No. 79 (P-CAN Low)	CH-B	A/C control module	Pin No. 34 (P-CAN Low)	Approx. below 1Ω

Good	Check if the DTC is erased while removing the P-CAN communication unit/module connector one by one. If the DTC is erased, check for proper operation. If the problem is corrected, replace the unit/module. Go to "VERIFICATION OF REPAIR " procedure.
No Good	Check for open/short in harness. Repair as necessary and then go to "VERIFICATION OF REPAIR " procedure.