DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)]

id0902j3846700

Caution

• If the malfunctioning part is detected in the communication line, before disconnecting the related connector for inspection, press the connector in the connection direction to verify that there is no looseness or disconnection.

• When disconnecting the connector, verify that there is no damage, deformation, or corrosion of the connector terminals.

1. Verify the CAN system-related module DTCs and the failed module using the (M-MDS).

2. Look for a DTC display pattern and failed module display pattern in tandem which match.

Note

• A hyphen “- “in the DTC output pattern table indicates that the DTC may be displayed depending on the malfunction detection conditions. If only an “×“is indicated, it means the DTC will not be displayed.

• If any of the following DTCs is displayed alone, perform the applicable DTC inspection. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].)

― TCM: U0415:00

― BCM: U0401

― Position memory control module: U0431:68

― Keyless control module: U2023

― BSM control module (RH): U0401:68, U0402:68, U0422:68, U0533:68

― BSM control module (LH): U0401:68, U0402:68, U0422:68, U0534:68

― Position memory control module: U0431:68

― Forward sensing camera: U0401:68, U0415:68, U0422:68, U0423:68, U2005:86

― Instrument cluster: U2510

3. Refer to the matching tandem diagnostic results (A to V) and inspect the possible cause and inspection item.

4. Perform the DTC inspection after the repair procedure.

• If any DTC is displayed, return to FOREWORD. (See FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (L.H.D.)].)

Diagnostic Table for Determining Malfunctioning Part

Cross (×): Displayed

Hyphen (-): May or may not be displayed

M-MDS display		DTC display pattern
DTC output module	DTC	DTC display pattern
PCM (PCM)	U0101:00		×
PCM (PCM)	U0140:00						×
TCM (TCM)	U0100:00	×
	U0121:00				×
	U0155:00									×		×		×		×		×			×		×
	U0415:00				-
ABS (DSC/RSC HU/CM)	U0100	×		×
	U0140						×
	U0155									×		×		×		×		×			×		×
GEM (BCM)	U0100	×		×		×
	U0101		×	×		×
	U0121				×	×
	U0401	-		-		-
4×4^*1 (4WD control module)	U0100	×		×		×
	U0101		×	×		×
	U0121				×	×
	U0155									×		×		×		×		×			×		×
RKE^*2 (Keyless control module)	U0100	×		×		×
	U0140						×
	U0323									×		×		×		×		×			×		×
	U2023	-		-		-
LTM^*3 (PLG control module)	U0100	×		×		×
	U0101		×	×		×
	U0140						×
	U0155											×		×		×		×			×		×
	U0214								×
BSML^*4 (BSM control module (LH))	U0100:00	×		×		×
	U0101:00		×	×		×
	U0140:00						×
	U0233:00													×	×
	U0401:68	-		-		-
	U0402:68		-	-		-
	U0422:68						-
	U0534:68													-	-
BSMR^*4 (BSM control module (RH))	U0100:00	×		×		×
	U0101:00		×	×		×
	U0140:00						×
	U0232:00												×
	U0401:68	-		-		-
	U0402:68		-	-		-
	U0422:68						-
	U0533:68												-
DSM^*5 (Position memory control module)	U0100:00	×		×		×
	U0101:00		×	×		×
	U0121:00				×	×
	U0140:00						-
	U0155:00																	×			×		×
	U0431:68						-
RCM (SAS control module)	U0155																				×		×
VSM^*6 (Theft-deterrent control module)	U0100:00	×		×		×
VSM^*6 (Theft-deterrent control module)	U0140:00						×
FSC^*7 (Forward sensing camera)	U0100:00	×		×		×
	U0121:00				×	×
	U0140:00						×
	U0155:00																						×
	U0401:68	-		-		-
	U0415:68				-	-
	U0422:68						-
	U0423:68																						-
	U2005:86	-		-		-
IC (Instrument cluster)	U0100	×		×		×
	U0101		×	×		×
	U0114							×
	U0121				×	×
	U0140						×
	U0151																		×
	U0200														×
	U0214								×
	U023A																					×
	U2510	-		-		-
M-MDS display module		“Fail” display pattern
PCM		×		×		×
TCM			×	×		×
ABS					×	×
GEM							×
4×4^*1								×
RKE^*2									×
LTM^*3										×	×
BSML^*4										×		×	×
BSMR^*4										×		×		×	×
DSM^*5										×		×		×		×	×
RCM										×		×		×		×		×	×
VSM^*6										×		×		×		×		×		×
FSC^*7										×		×		×		×		×			×	×
IC										×		×		×		×		×			×		×
Item		Diagnostic result
Possible cause and inspection item		A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R	S	T	U	V
Reference page		A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P	Q	R	S	T	U	V

*1 :With 4WD

*2 :With advanced keyless entry and start system

*3 :With PLG system

*4 :With blind spot monitoring (BSM) control module connector 8-pin type

*5 :With memory power seat

*6 :With theft-deterrent system

*7 :With forward sensing camera

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• PCM power supply voltage or body ground malfunction

• Open circuit in wiring harness between PCM and branch A

• PCM malfunction

System wiring diagram

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Inspection item

• PCM power supply voltage-related wiring harness and fuse

• PCM body ground related wiring harness

• PCM connector

• Wiring harness between PCM terminal 1AH and branch A

• Wiring harness between PCM terminal 1AL and branch A

• PCM

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• TCM power supply voltage or body ground malfunction

• Open circuit in wiring harness between TCM and connector C-03

• Open circuit in wiring harness between connector C-03 and branch A

• Connector C-03 malfunction

• TCM malfunction

System wiring diagram

ac9wzw00003052

Inspection item

• TCM power supply voltage-related wiring harness and fuse

• TCM body ground related wiring harness

• TCM connector

• Connector C-03 connector

• Wiring harness between TCM terminal A14 and connector C-03

• Wiring harness between TCM terminal A6 and connector C-03

• Wiring harness between connector C-03 and branch A

• TCM

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Open circuit in wiring harness between branch A and connector C-36

• Connector C-36 malfunction

System wiring diagram

ac9wzw00003053

Inspection item

• Connector C-36

• Wiring harness between branch A and connector C-36

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• DSC/RSC HU/CM power supply voltage or body ground malfunction

• Open circuit in wiring harness between DSC/RSC HU/CM and connector C-36

• Connector C-36 malfunction

• DSC/RSC HU/CM malfunction

System wiring diagram

ac9wzw00003054

Inspection item

• DSC/RSC HU/CM power supply voltage-related wiring harness and fuse

• DSC/RSC HU/CM body ground related wiring harness

• DSC/RSC HU/CM connector

• Connector C-36 connector

• Wiring harness between DSC/RSC HU/CM terminal Y and connector C-36

• Wiring harness between DSC/RSC HU/CM terminal V and connector C-36

• DSC/RSC HU/CM

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Open circuit in wiring harness between BCM and connector C-36

• Connector C-36 malfunction

• BCM malfunction

System wiring diagram

ac9wzw00003055

Inspection item

• BCM connector

• Connector C-36 connector

• Wiring harness between BCM terminal 1L and connector C-36

• Wiring harness between BCM terminal 1J and connector C-36

• Inspect for continuity between the following terminals:

― BCM terminal 1L and terminal 3AA

― BCM terminal 1J and terminal 3Z

Possible cause

• BCM power supply voltage or body ground malfunction

• BCM malfunction

System wiring diagram

ac9wzw00003056

Inspection item

• BCM power supply voltage-related wiring harness and fuse

• BCM body ground related wiring harness

• BCM

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• 4WD control module power supply voltage or body ground malfunction

• Open circuit in wiring harness 4WD control module and BCM

• 4WD control module malfunction

• BCM malfunction

System wiring diagram

ac9wzw00003057

Inspection item

• 4WD control module power supply voltage-related wiring harness and fuse

• 4WD control module body ground related wiring harness

• BCM connector

• 4WD control module connector

• Wiring harness between 4WD control module terminal G and BCM terminal 6J

• Wiring harness between 4WD control module terminal H and BCM terminal 6H

• 4WD control module

• Inspect for continuity between the following terminals:

― BCM terminal 6J and terminal 3AA

― BCM terminal 6H and terminal 3Z

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Keyless control module power supply voltage or body ground malfunction

• Open circuit in wiring harness keyless control module and BCM

• Keyless control module malfunction

• BCM malfunction

System wiring diagram

ac9wzw00003058

Inspection item

• Keyless control module power supply voltage-related wiring harness and fuse

• Keyless control module body ground related wiring harness

• BCM connector

• Keyless control module connector

• Wiring harness between keyless control module terminal 3X and BCM terminal 3AD

• Wiring harness between keyless control module terminal 3W and BCM terminal 3AC

• Keyless control module

• Inspect for continuity between the following terminals:

― BCM terminal 3AD and terminal 3AA

― BCM terminal 3AC and terminal 3Z

With PLG system

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Open circuit in wiring harness BCM and branch B

• BCM malfunction

System wiring diagram

ac9wzw00003059

Inspection item

• BCM connector

• Wiring harness between BCM terminal 6I and branch B

• Wiring harness between BCM terminal 6G and branch B

• Inspect for continuity between the following terminals:

― BCM terminal 6I and terminal 3AA

― BCM terminal 6G and terminal 3Z

Without PLG system

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Open circuit in wiring harness BCM and connector C-21

• Open circuit in wiring harness connector C-21 and connector C-43

• connector C-21 malfunction

• connector C-43 malfunction

• BCM malfunction

System wiring diagram

ac9wzw00003060

Inspection item

• BCM connector

• Connector C-21

• Connector C-43

• Wiring harness between BCM terminal 6I and Connector C-21

• Wiring harness between BCM terminal 6G and Connector C-21

• Wiring harness between Connector C-21 and Connector C-43

• Inspect for continuity between the following terminals:

― BCM terminal 6I and terminal 3AA

― BCM terminal 6G and terminal 3Z

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• PLG control module power supply voltage or body ground malfunction

• Open circuit in wiring harness between PLG control module and branch B

• PLG control module malfunction

System wiring diagram

ac9wzw00003061

Inspection item

• PLG control module power supply voltage-related wiring harness and fuse

• PLG control module body ground related wiring harness

• PLG control module connector

• Wiring harness between PLG control module terminal 3V and branch B

• Wiring harness between PLG control module terminal 3U and branch B

• PLG control module

With BSM system

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Open circuit in wiring harness branch B and connector C-21

• Open circuit in wiring harness connector C-21 and connector C-43

• Connector C-21 malfunction

• Connector C-43 malfunction

System wiring diagram

ac9wzw00002648

Inspection item

• Connector C-21

• Connector C-43

• Wiring harness between branch B and Connector C-21

• Wiring harness between Connector C-21 and Connector C-43

Without BSM system

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Open circuit in wiring harness branch B and connector C-21

• Open circuit in wiring harness connector C-21 and connector C-21

• Open circuit in wiring harness connector C-21 and branch C

• Connector C-21 malfunction

System wiring diagram

ac9wzw00002649

Inspection item

• Connector C-21

• Wiring harness between branch B and connector C-21

• Wiring harness between connector C-21 and connector C-21

• Wiring harness between connector C-21 and branch C

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• BSM control module (LH) power supply voltage or body ground malfunction

• Open circuit in wiring harness between BSM control module (LH) and connector C-43

• Connector C-43 malfunction

• BSM control module (LH) malfunction

System wiring diagram

ac9wzw00003167

Inspection item

• BSM control module (LH) power supply voltage-related wiring harness and fuse

• BSM control module (LH) body ground related wiring harness

• BSM control module (LH) connector

• Connector C-43 connector

• Wiring harness between BSM control module (LH) terminal H and connector C-43

• Wiring harness between BSM control module (LH) terminal G and connector C-43

• BSM control module (LH)

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Open circuit in wiring harness between connector C-43 and branch C

• Connector C-43 malfunction

System wiring diagram

ac9wzw00002651

Inspection item

• Connector C-43

• Wiring harness between connector C-43 and branch C

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• BSM control module (RH) power supply voltage or body ground malfunction

• Open circuit in wiring harness between BSM control module (RH) and branch C

• BSM control module (RH) malfunction

System wiring diagram

ac9wzw00002652

Inspection item

• BSM control module (RH) power supply voltage-related wiring harness and fuse

• BSM control module (RH) body ground related wiring harness

• BSM control module (RH) connector

• Wiring harness between BSM control module (RH) terminal H and branch C

• Wiring harness between BSM control module (RH) terminal G and branch C

• BSM control module (RH)

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Open circuit in wiring harness between branch C and connector C-21

• Open circuit in wiring harness between connector C-21 and branch D

• Connector C-21 malfunction

System wiring diagram

ac9wzw00002653

Inspection item

• Connector C-21

• Wiring harness between branch C and connector C-21

• Wiring harness between connector C-21 and branch D

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Position memory control module power supply voltage or body ground malfunction

• Open circuit in wiring harness between position memory control module and connector C-48

• Open circuit in wiring harness between connector C-48 and branch D

• Connector C-48 malfunction

• Position memory control module malfunction

System wiring diagram

ac9wzw00003062

Inspection item

• Position memory control module power supply voltage-related wiring harness and fuse

• Position memory control module body ground related wiring harness

• Position memory control module connector

• Connector C-48 connector

• Wiring harness between position memory control module terminal 1I and connector C-48

• Wiring harness between position memory control module terminal 1J and connector C-48

• Wiring harness between connector C-48 and branch D

• Position memory control module

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Open circuit in wiring harness between branch D and connector C-11

• Open circuit in wiring harness between connector C-11 and connector C-38

• Connector C-11 malfunction

• Connector C-38 malfunction

System wiring diagram

ac9wzw00003063

Inspection item

• Connector C-11 connector

• Connector C-38 connector

• Wiring harness between branch D and connector C-11

• Wiring harness between connector C-11 and connector C-38

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• SAS control module power supply voltage or body ground malfunction

• Open circuit in wiring harness SAS control module and connector C-38

• SAS control module malfunction

• Connector C-38 malfunction

System wiring diagram

ac9wzw00003064

Inspection item

• SAS control module power supply voltage-related wiring harness and fuse

• SAS control module body ground related wiring harness

• SAS control module connector

• Connector C-38 connector

• Wiring harness between SAS control module terminal 1X and connector C-38

• Wiring harness between SAS control module terminal 1T and connector C-38

• SAS control module

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Theft-deterrent control module power supply voltage or body ground malfunction

• Open circuit in wiring harness theft-deterrent control module and connector C-38

• Connector C-38 malfunction

• Theft-deterrent control module malfunction

System wiring diagram

ac9wzw00003065

Inspection item

• Theft-deterrent control module power supply voltage-related wiring harness and fuse

• Theft-deterrent control module body ground related wiring harness

• Theft-deterrent control module connector

• Connector C-38 connector

• Wiring harness between theft-deterrent control module terminal K and connector C-38

• Wiring harness between theft-deterrent control module terminal I and connector C-38

• Theft-deterrent control module

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Open circuit in wiring harness connector C-38 and connector C-17

• Open circuit in wiring harness connector C-17 and branch E

• Connector C-38 malfunction

• Connector C-17 malfunction

System wiring diagram

ac9wzw00003066

Inspection item

• Connector C-38 connector

• Connector C-17 connector

• Wiring harness between Connector C-38 and connector C-17

• Wiring harness between connector C-17 and branch E

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Forward sensing camera power supply voltage or body ground malfunction

• Open circuit in wiring harness forward sensing camera and branch E

• Forward sensing camera malfunction

System wiring diagram

ac9wzw00003067

Inspection item

• Forward sensing camera power supply voltage-related wiring harness and fuse

• Forward sensing camera body ground related wiring harness

• Forward sensing camera connector

• Wiring harness between forward sensing camera terminal E and branch E

• Wiring harness between forward sensing camera terminal C and branch E

• Forward sensing camera

Possible cause

• Connector terminal disconnection, poor contact, damage, deformation, corrosion

• Instrument cluster power supply voltage or body ground malfunction

• Open circuit in wiring harness branch E and connector C-17

• Open circuit in wiring harness connector C-17 and instrument cluster

• Connector C-17 malfunction

• Instrument cluster malfunction

System wiring diagram

ac9wzw00003068

Inspection item

• Instrument cluster power supply voltage-related wiring harness and fuse

• Instrument cluster body ground related wiring harness

• Instrument cluster connector

• Connector C-17 connector

• Wiring harness between branch E and connector C-17

• Wiring harness between instrument cluster terminal 1X and connector C-17

• Wiring harness between instrument cluster terminal 1W and connector C-17

• Instrument cluster