Circuit Inspection

Fig 1: IBAU System Circuit

G12320481

Courtesy of KIA MOTORS AMERICA, INC.

Fig 2: IBAU Connector Terminals

G12320482

Courtesy of KIA MOTORS AMERICA, INC.

INSPECTION PART - IGPM AND INSTRUMENT CLUSTER INSPECTION

Inspection Part: C-CAN Inspection
Inspection Condition	(+) Probe		(-) Probe		Specification
Inspection Condition	Connector	Terminal	Connector	Terminal	Specification
Ignition "OFF" and disconnect the battery. Disconnect the electrical connector(s) from the concerned component.	IBAU Connector	38 (C-CAN High)	IBAU Connector	39 (C-CAN Low)	Approx. 60Ω
	Instrument cluster Connector	33 (C-CAN High)	Instrument cluster Connector	32 (C-CAN Low)	Approx. 60Ω
	IBAU Connector	38 (C-CAN High)	Instrument cluster Connector	33 (C-CAN High)	Below 1Ω
	IBAU Connector	39 (C-CAN Low)	Instrument cluster Connector	32 (C-CAN Low)	Below 1Ω

Good	Fault might be intermittent and caused either by poor contact in connectors or wiring harness, or it has been repaired and control module memory is not cleared yet. Thoroughly check terminal of battery, all connectors (and connections) for looseness, bending, corrosion, contamination, deterioration, and/or damage. Repair or replace as necessary and then go to "VERIFICATION OF REPAIR " procedure.
No Good	Carefully re-do this troubleshooting guide steps. If no problems were found with the circuits or connectors, replace (MDPS) MOTOR DRIVEN POWER STEERING SYSTEM Unit and then go to "VERIFICATION OF REPAIR " procedure. * In case of replacing IBAU, perform "Vehicle S/W Management" procedure as CIRCUIT INSPECTION of C1260-02.