Circuit Inspection

Courtesy of KIA MOTORS AMERICA, INC.

Courtesy of KIA MOTORS AMERICA, INC.

C-CAN Communication Line Inspection 

Inspection Condition	(+) Probe		(-) Probe		Specification
	Connector	Terminal	Connector	Terminal
Ignition "ON"	C-MDPS unit connector	7 (C-CAN high)	Chassis ground	-	Fig. 1
	C-MDPS unit connector	8 (C-CAN low)	Chassis ground	-
Ignition "OFF". Disconnect battery (-) cable. Disconnect the electrical connector(s) of all the concerned component to the related CAN system.	C-MDPS unit connector	7 (C-CAN high)	Chassis ground	-	(Infinity)Ω
	C-MDPS unit connector	8 (C-CAN low)	Chassis ground	-	(Infinity)Ω
Ignition "OFF". Disconnect the electrical connector(s)from the concerned component.	C-MDPS unit connector	7 (C-CAN high)	ICU connector	20 (C-CAN high	Approx. below 1Ω
	C-MDPS unit connector	8 (C-CAN low)	ICU connector	19 (C-CAN low)	Approx. below 1Ω
Ignition "OFF". Disconnect battery (-) cable. Disconnect the electrical connector(s) from the concerned component.	ICU (component side)	20 (C-CAN high)	ICU (component side)	19 (C-CAN low)	Approx. 120Ω
	SRSCM (component side)	27 (C-CAN high)	SRSCM (component side)	26 (C-CAN low)	Approx. 120Ω

Courtesy of KIA MOTORS AMERICA, INC.

Good 

• Go to "P-CAN Communication Line Inspection" procedure.

No Good 

• Repair open or short in circuit and then go to "Verification of Repair " procedure.

P-CAN Communication Line Inspection 

Inspection Condition	(+) Probe		(-) Probe		Specification
	Connector	Terminal	Connector	Terminal
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component.	ICU connector	17 (P-CAN high)	ECM connector	62 (P-CAN high)	Approx. below 1Ω
	ICU connector	18 (P-CAN low)	ECM connector	45 (P-CAN low)	Approx. below 1Ω
Ignition "OFF". Disconnect battery (-) cable. Disconnect the electrical connector(s) of all the concerned component to the related CAN system.	ECM connector	62 (P-CAN high)	Chassis ground	-	(Infinity)Ω
	ECM connector	45 (P-CAN low)	Chassis ground	-	(Infinity)Ω
Ignition "ON".	ECM connector	62 (P-CAN high)	Chassis ground	-	Fig. 1
	ECM connector	45 (P-CAN low)	Chassis ground	-
Ignition "OFF". Disconnect battery (-) cable. Disconnect the electrical connector(s) from the concerned component.	ICU (component side)	17 (P-CAN high)	ICU (component side)	18 (P-CAN low)	Approx. 120Ω
	ECM (component side)	62 (P-CAN high)	ECM (component side)	45 (C-CAN low)	Approx. 120Ω

Courtesy of KIA MOTORS AMERICA, INC.

Good 

• Go to "Module Circuit Inspection" procedure.

No Good 

• Repair open or short in circuit and then go to "Verification of Repair " procedure.

Module Circuit Inspection 

Inspection Condition	(+) Probe		(-) Probe		Specification
	Connector	Terminal	Connector	Terminal
Ignition "OFF". Disconnect the electrical connector(s) from the concerned component.	C-MDPS unit connector	1 (Memory power)	Chassis ground	-	B+
	C-MDPS unit connector	2 (ground)	Chassis ground	-	Approx. below 1Ω
Disconnect the electrical connector(s) from the concerned component. Ignition "ON".	C-MDPS unit connector	1 (ON/START Input)	Chassis ground	-	B+

Good 

• Fault is intermittent caused by poor contact in the sensors and/or ECN 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 

• Repair open or short in circuit and then go to "Verification of Repair " procedure.
• If no problems were found with the circuits or connectors, replace the C-MDPS and go to "Verification of Repair " procedure.