Circuit Inspection

Fig 1: IBAU System Circuit

G12320258

Courtesy of KIA MOTORS AMERICA, INC.

INSPECTION PART - REAR WHEEL SENSORS RH AND IBAU INSPECTION

Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Disconnect the electrical connector(s) from the concerned component. Ignition "ON".	Rear Wheel Sensor RH Connector	2 (power)	Chassis ground	-	B+
	Rear Wheel Sensor RH Connector	1 (signal)	IBAU Connector	43 (signal)	Fig 2
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component.	Rear Wheel Sensor RH Connector	2 (power)	Chassis ground	-	0V
	Rear Wheel Sensor RH Connector	1 (signal)	Chassis ground	-	∞ (infinite)Ω
	Rear Wheel Sensor RH Connector	1 (signal)	IBAU Connector	43 (signal)	Below 1Ω
	Rear Wheel Sensor RH Connector	2 (power)	IBAU Connector	34 (power)	Below 1Ω

Fig 2: Screen Display - Rear Wheel Speed Sensor Signal Waveform

G12320259

Courtesy of KIA MOTORS AMERICA, INC.

Good	Go to "COMPONENT INSPECTION " procedure.
No Good	Repair open or short in circuit and then go to "VERIFICATION OF REPAIR " procedure.