April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit Inspection: Notes

Fig 1: ECM System Circuit

G12330535

Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: ECM Connector Terminals

G12330536

Courtesy of KIA MOTORS AMERICA, INC.

INSPECTION PART - MCU CONNECTOR INSPECTION

Inspection Part: Power And Ground Circuit Inspection
Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Disconnect the Electrical Connector(s) from the concerned component. Ignition "ON".	MCU Connector	4/5/6 (Power)	Chassis Ground	-	B+
	MCU Connector	73 (ON/START)	Chassis Ground	-	B+
	MCU 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.