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

― EHPAS control module: U2023

― DSC HU/CM: U0401:00, U0402:00, U0422:00, U0428:62, U0428:64

― BCM: U0401:68

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

― Instrument cluster: U0100:87, U0401:68, U0401:92, U0415:68, U0415:92, U0452:92, U0483:68, U0483:92, U0515:68, U0515:92, U0533:68, U2005:86

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 (L.H.D. (MZR-CD 2.2))].

DTC Output Pattern and Malfunctioning Part

Cross (×): Displayed

Hyphen (-): May or may not be displayed

M-MDS display		DTC display pattern
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 (EHPAS control module)	U0100	×
	U0140
	U0155																×
	U2023	-
ABS^*1 (DSC HU/CM)	U0100:00	×		×
	U0140:00
	U0155:00																×
	U0401:00	-		-
	U0402:00	-		-
	U0422:00
	U0428:62
	U0428:64
ABS^*2 (ABS HU/CM)	U0100:00	×		×
ABS^*2 (ABS HU/CM)	U0155:00																×
GEM (BCM)	U0100:00	×		×			×
	U0121:00				×	×	×
	U0151:00										×
	U0214:00												×
	U0401:68	-		-			-
RVM^*3 (Rear vehicle monitoring control module (RH))	U0100:00	×		×			×	×
	U0121:00				×	×	×	×
	U0140:00							×
	U0155:00																×
	U0401:68	-		-			-	-
	U0415:68				-	-	-	-
RCM (SAS control module)	U0155																×
RKE^*4 (Keyless control module)	U0100:00	×		×			×	×		×		×
RKE^*4 (Keyless control module)	U0121:00				×	×	×	×		×		×
AFS^*5 (AFS control module)	U0100:00	×		×			×	×		×		×		×
AFS^*5 (AFS control module)	U0140:00							×		×		×		×
IC (Instrument cluster)	U0100:00	×		×			×	×		×		×		×		×
	U0100:87	-		-			-	-		-		-		-		-
	U0121:00				×	×	×	×		×		×		×		×
	U0131:00		×	×			×	×		×		×		×		×
	U0140:00							×		×		×		×		×
	U0151:00										×	×		×		×
	U0182:00														×	×
	U0214:00												×	×		×
	U0232:00								×	×		×		×		×
	U0401:68	-		-			-	-		-		-		-		-
	U0401:92	-		-			-	-		-		-		-		-
	U0415:68				-	-	-	-		-		-		-		-
	U0415:92				-	-	-	-		-		-		-		-
	U0452:92										-	-		-		-
	U0483:68														-	-
	U0483:92														-	-
	U0515:68												-	-		-
	U0515:92												-	-		-
	U0533:68								-	-		-		-		-
	U2005:86	-		-			-	-		-		-		-		-
M-MDS display module		“Fail” display pattern
PCM		×		×			×	×		×		×		×		×
EPS			×	×			×	×		×		×		×		×
ABS^*1					×		×	×		×		×		×		×
ABS^*2						×	×	×		×		×		×		×
GEM								×		×		×		×		×
RVM^*3									×	×		×		×		×
RCM											×	×		×		×
RKE^*4													×	×		×
AFS^*5															×	×
IC																	×

*1 :With DSC

*2 :With ABS

*3 :With rear vehicle monitoring control module

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

*5 :With AFS (adaptive front lighting 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 EHPAS control module and branch A

• EHPAS control module malfunction

System wiring diagram

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Inspection item

• EHPAS control module connector

• Wiring harness between EHPAS control module terminal 2D and branch A

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

• EHPAS control module

Possible cause

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

• Open circuit in wiring harness between branch A and connector C-41

• Connector C-41 malfunction

System wiring diagram

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Inspection item

• Connector C-41

• Wiring harness between branch A and connector C-41

Possible cause

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

• Open circuit in wiring harness between DSC HU/CM and connector C-41

• Connector C-41 malfunction

• DSC HU/CM malfunction

System wiring diagram

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Inspection item

• DSC HU/CM connector

• Connector C-41

• Wiring harness between DSC HU/CM terminal M and connector C-41

• Wiring harness between DSC HU/CM terminal J and connector C-41

• DSC HU/CM

Possible cause

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

• Open circuit in wiring harness between ABS HU/CM and connector C-41

• Connector C-41 malfunction

• ABS HU/CM malfunction

System wiring diagram

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Inspection item

• ABS HU/CM connector

• Connector C-41

• Wiring harness between ABS HU/CM terminal H and connector C-41

• Wiring harness between ABS HU/CM terminal L and connector C-41

• ABS HU/CM

Possible cause

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

• Open circuit in wiring harness between BCM and connector C-41

• Connector C-41 malfunction

• BCM malfunction

System wiring diagram

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Inspection item

• BCM connector

• Connector C-41

• Wiring harness between BCM terminal 1A and connector C-41

• Wiring harness between BCM terminal 1B and connector C-41

• BCM

Possible cause

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

• Open circuit in wiring harness between BCM and connector C-17

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

• Connector C-17 malfunction

• BCM malfunction

System wiring diagram

am3zzw00008831

Inspection item

• BCM connector

• Connector C-17

• Wiring harness between BCM terminal 2A and connector C-17

• Wiring harness between BCM terminal 2B and connector C-17

• Wiring harness between connector C-17 and branch B

• BCM

Possible cause

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

• Open circuit in wiring harness rear vehicle monitoring control module (RH) and connector C-24

• Open circuit in wiring harness connector C-24 and branch B

• Connector C-24 malfunction

• Rear vehicle monitoring control module (RH) malfunction

System wiring diagram

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Inspection item

• Rear vehicle monitoring control module (RH) connector

• Connector C-24

• Wiring harness between Rear vehicle monitoring control module (RH) terminal L and connector C-24

• Wiring harness between Rear vehicle monitoring control module (RH) terminal I and connector C-24

• Wiring harness between connector C-24 and branch B

• Rear vehicle monitoring control module (RH)

Possible cause

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

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

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

• Connector C-17 malfunction

System wiring diagram

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Inspection item

• Connector C-17

• Wiring harness between branch B and connector C-17

• Wiring harness between connector C-17 and branch C

Possible cause

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

• Open circuit in wiring harness between SAS control module and branch C

• SAS control module malfunction

System wiring diagram

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Inspection item

Three-connector type

• SAS control module connector

• Wiring harness between SAS control module terminal 1C and branch C

• Wiring harness between SAS control module terminal 1A and branch C

• SAS control module

Two-connector type

• SAS control module connector

• Wiring harness between SAS control module terminal 1X and branch C

• Wiring harness between SAS control module terminal 1T and branch C

• SAS control module

Possible cause

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

• Open circuit in wiring harness branch C and connector C-50

• Connector C-50 malfunction

System wiring diagram

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Inspection item

• Connector C-50

• Wiring harness between branch C and connector C-50

Possible cause

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

• Open circuit in wiring harness between keyless control module and connector C-50

• Connector C-50 malfunction

• Keyless control module malfunction

System wiring diagram

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Inspection item

• Connector C-50

• Keyless control module connector

• Wiring harness between keyless control module terminal 2K and connector C-50

• Wiring harness between keyless control module terminal 2L and connector C-50

• Keyless control module

Possible cause

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

• Open circuit in wiring harness between connector C-50 and connector C-49

• Connector C-50 malfunction

• Connector C-49 malfunction

System wiring diagram

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Inspection item

• Connector C-50

• Connector C-49

• Wiring harness between connector C-50 and connector C-49

Possible cause

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

• Open circuit in wiring harness between AFS control module and connector C-49

• Connector C-49 malfunction

• AFS control module malfunction

System wiring diagram

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Inspection item

• AFS control module connector

• Connector C-49

• Wiring harness between AFS control module terminal B and connector C-49

• Wiring harness between AFS control module terminal A and connector C-49

• AFS control module

Possible cause

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

• Open circuit in wiring harness between connector C-49 and connector C-42

• Connector C-49 malfunction

• Connector C-42 malfunction

System wiring diagram

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Inspection item

• Connector C-49

• Connector C-42

• Wiring harness between connector C-49 and connector C-42

Possible cause

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

• Open circuit in wiring harness between connector C-42 and instrument cluster

• Connector C-42 malfunction

• Instrument cluster malfunction

System wiring diagram

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Inspection item

• Connector C-42

• Instrument cluster connector

• Wiring harness between instrument cluster terminal 2B and Connector C-42

• Wiring harness between instrument cluster terminal 2D and Connector C-42

• Instrument cluster