Circuit Inspection

WARNING: This page is about a different car, the 2021 Kia Seltos. However, it is still accessible from the selected car via links, so may be relevant.

Courtesy of KIA MOTORS AMERICA, INC.

Courtesy of KIA MOTORS AMERICA, INC.

CAN COMMUNICATION LINE INSPECTION CONDITION

Inspection Condition	(+) Probe		(-) Probe		Reference
Inspection Condition	Connector	Terminal	Connector	Terminal	Reference
Ignition "OFF". Disconnect battery (-) cable Disconnect the electrical connector(s) from the concerned component.	TCM connector	18 (P-CAN high)	TCM connector	17 (P-CAN low)	Approx. 60Ω
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component. Ignition "ON".	TCM connector	14, 15, 16 (Memory power)	Chassis ground	-	B+
	TCM connector	11 (ON/START)	Chassis ground	-	B+
Ignition "OFF". Disconnect battery (-) cable. Disconnect the electrical connector(s) from the concerned component.	TCM connector	1, 2 (ground)	Chassis ground	-	Approx. below 1Ω
Ignition "ON".	TCM connector	18 (P-CAN high)	Chassis ground	-	Fig.1
Ignition "ON".	TCM connector	17 (P-CAN low)	Chassis ground	-	Fig.1

Courtesy of KIA MOTORS AMERICA, INC.

Good

Fault is intermittent caused by poor contact in the sensor's and/or ECM's connector or was repaired and ECM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF REPAIR " procedure.

No Good

If no problems were found with the circuits or connectors, replace the TCM and go to "VERIFICATION OF REPAIR " procedure.