DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM (MZR-CD 2.2)]

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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 on the M-MDS screen.

2. Refer to “DTC Output Pattern and Malfunctioning Part” and find the area linked from the malfunctioning part.

Note

• A hyphen (-) in the DTC output pattern cell indicates that the DTC may be displayed depending on the malfunction detection conditions. If it is not displayed, the malfunctioning part can be determined by checking only the crosses (×).

• If any of the following DTCs is displayed alone, perform the applicable DTC inspection. (See DTC TABLE [MULTIPLEX COMMUNICATION SYSTEM (MZR-CD 2.2)].)

― Instrument cluster: U0100:87, U401:68, U0415:68, U0515:68

― DSC HU/CM: U0401:00, U401:68

― BCM: U0401:68

― Rear vehicle monitoring control module (RH): U0401:68, U0415:68

― Keyless control module: U0401:68

3. Inspect the possible cause and inspection item of the applicable malfunctioning part.

4. Perform the DTC inspection after the repair procedure.

• If any DTC is displayed, return to FOREWORD [MULTIPLEX COMMUNICATION SYSTEM (MZR-CD 2.2)].

DTC Output Pattern and Malfunctioning Part

Cross (×): Displayed

Hyphen (-): May or may not be displayed

M-MDS display		DTC output pattern and malfunctioning part
DTC output module	DTC	A	B	C	D	E	F	G	H	I	J	K	L	M	N	O	P
PCM (PCM)	U0121:00				×
PCM (PCM)	U0155:00																×
EPS (EPS control module)	U0100:00	×
EPS (EPS control module)	U0401:00	-
ABS (DSC HU/CM)	U0100:00	×		×
	U0140:00
	U0155:00																×
	U0214:00								×
	U0401:00	-		-
	U0401:68	-		-
FFH^*1 (Water heater unit)	U0100:00	×		×		×
	U0140:00
	U0155:00																×
RKE*2 (Keyless control module)	U0100:00	×		×		×		×
	U0121:00				×	×		×
	U0401:68	-		-		-		-
RVM^*3 (Rear vehicle monitoring control module (RH))	U0100:00	×		×		×		×		×
	U0121:00				×	×		×		×
	U0140:00
	U0155:00																×
	U0401:68	-		-		-		-		-
	U0415:68				-	-		-		-
BCM/GEM (BCM)	U0100:00	×		×		×		×		×		×
	U0151:00													×
	U0214:00								×	×		×
	U0401:68	-		-		-		-		-		-
RCM (SAS control module)	U0155:00																×
IC (Instrument cluster)	U0100:00	×		×		×		×		×		×	×		×
	U0100:87	-		-		-		-		-		-	-		-
	U0121:00				×	×		×		×		×	×		×
	U0131:00		×	×		×		×		×		×	×		×
	U0140:00												×		×
	U0151:00													×	×
	U0166:00						×	×		×		×	×		×
	U0182:00															×
	U0214:00								×	×		×	×		×
	U0232:00										×	×	×		×
	U0401:68	-		-		-		-		-		-	-		-
	U0415:68				-	-		-		-		-	-		-
	U0515:68								-	-		-	-		-
M-MDS display module		“Fail” display pattern
PCM		×		×		×		×		×		×	×		×
EPS			×	×		×		×		×		×	×		×
ABS					×	×		×		×		×	×		×
FFH							×	×		×		×	×		×
RKE									×	×		×	×		×
RVM											×	×	×		×
BCM/GEM													×		×
SAS														×	×
IC																	×

*1 :With water heater system

*2 :With advanced keyless entry and push button start system

*3 :With rear vehicle monitoring system

Possible cause

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

• Open circuit in wiring harness between PCM and branch A

• PCM malfunction

System wiring diagram

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Inspection item

• PCM connector

• Wiring harness between PCM terminal 2AD and branch A

• Wiring harness between PCM terminal 2AH and branch A

• PCM

Possible cause

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

• Open circuit in wiring harness between EPS control module and branch A

• EPS control module malfunction

System wiring diagram

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Inspection item

• EPS control module connector

• Wiring harness between EPS control module terminal 2B and branch A

• Wiring harness between EPS control module terminal 2C and branch A

• EPS control module

Possible cause

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

• Open circuit in wiring harness between branch A and connector C-63

• Open circuit in wiring harness between connector C-63 and branch B

• Connector C-63 malfunction

System wiring diagram

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Inspection item

• Connector C-63

• Wiring harness between branch A and connector C-63

• Wiring harness between connector C-63 and branch B

Possible cause

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

• Open circuit in wiring harness between DSC HU/CM and branch B

• DSC HU/CM malfunction

System wiring diagram

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Inspection item

• DSC HU/CM connector

• Wiring harness between DSC HU/CM terminal E and branch B

• Wiring harness between DSC HU/CM terminal D and branch B

• DSC HU/CM

Possible cause

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

• Open circuit in wiring harness between branch B and branch C

System wiring diagram

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Inspection item

• Wiring harness between branch B and branch C

Possible cause

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

• Open circuit in wiring harness between water heater unit and branch C

• Water heater unit malfunction

System wiring diagram

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Inspection item

• Water heater unit connector

• Wiring harness between water heater unit terminal 2C and branch C

• Wiring harness between water heater unit terminal 2E and branch C

• Water heater unit

Possible cause

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

• Open circuit in wiring harness between branch C and connector C-06

• Open circuit in wiring harness between connector C-06 and connector C-33

• Connector C-06 malfunction

System wiring diagram

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Inspection item

• Connector C-06

• Wiring harness between branch C and connector C-06

• Wiring harness between connector C-06 and connector C-33

Possible cause

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

• Open circuit in wiring harness between keyless control module and connector C-33

• Connector C-33 malfunction

• Keyless control module malfunction

System wiring diagram

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Inspection item

• Keyless control module connector

• Connector C-33

• Wiring harness between keyless control module terminal 2G and connector C-33

• Wiring harness between keyless control module terminal 2I and connector C-33

• Keyless control module

Possible cause

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

• Open circuit in wiring harness between connector C-33 and connector C-27

• Open circuit in wiring harness between connector C-27 and branch D

• Connector C-27 malfunction

System wiring diagram

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Inspection item

• Connector C-27

• Wiring harness between connector C-33 and connector C-27

• Wiring harness between connector C-27 and branch D

Possible cause

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

• Open circuit in wiring harness between rear vehicle monitoring control module (RH) and branch D

• Rear vehicle monitoring control module (RH) malfunction

System wiring diagram

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Inspection item

• Rear vehicle monitoring control module (RH) connector

• Wiring harness between rear vehicle monitoring control module (RH) terminal L and branch D

• Wiring harness between rear vehicle monitoring control module (RH) terminal I and branch D

• Rear vehicle monitoring control (RH) module

Possible cause

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

• Open circuit in wiring harness between branch D and connector C-27

• Open circuit in wiring harness between connector C-27 and BCM

• Connector C-27 malfunction

System wiring diagram

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Inspection item

• BCM control module connector

• Connector C-27

• Wiring harness between branch D and connector C-27

• Wiring harness between steering BCM control module terminal 6D and connector C-27

• Wiring harness between steering BCM control module terminal 6B and connector C-27

Possible cause

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

• Open circuit in wiring harness between BCM and connector C-18

• BCM malfunction

System wiring diagram

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Inspection item

• BCM connector

• Wiring harness between BCM terminal 3S and connector C-18

• Wiring harness between BCM terminal 3P and connector C-18

• BCM

Possible cause

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

• Open circuit in wiring harness between SAS control module and connector C-18

• Connector C-18 malfunction

• SAS control module malfunction

System wiring diagram

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Inspection item

• SAS control module connector

• Connector C-18

• Wiring harness between SAS control module terminal 3C and connector C-18

• Wiring harness between SAS control module terminal 3D and connector C-18

• SAS control module

Possible cause

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

• Open circuit in wiring harness between connector C-18 and connector C-19

• Connector C-18

• Connector C-19

System wiring diagram

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Inspection item

• Connector C-18

• Connector C-19

• Wiring harness between Connector C-18 and Connector C-19

Possible cause

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

• Open circuit in wiring harness between AFS control module and connector C-19

• Connector C-19 malfunction

• AFS control module malfunction

System wiring diagram

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Inspection item

• AFS control module connector

• Connector C-19

• Wiring harness between AFS control module terminal B and connector C-19

• Wiring harness between AFS control module terminal A and connector C-19

• AFS control module

Possible cause

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

• Open circuit in wiring harness between connector C-19 and Instrument cluster

• Connector C-19 malfunction

• Instrument cluster malfunction

System wiring diagram

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Inspection item

• Instrument cluster connector

• Connector C-19

• Wiring harness between instrument cluster terminal 2X and connector C-19

• Wiring harness between instrument cluster terminal 2W and connector C-19

• Instrument cluster