DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM (R.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 (R.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 (R.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

PCM
(PCM)
U0121:00
 
 
 
×
×
 
 
 
 
 
 
 
 
 
 
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
×
 
×
 
 
 
 
 
 
 
 
 
 
 
 
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
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
AFS*4
(AFS control module)
U0100:00
×
 
×
 
 
×
×
 
×
 
×
 
 
 
 
U0140:00
 
 
 
 
 
 
×
 
×
 
×
 
 
 
 
RKE*5
(Keyless control module)
U0100:00
×
 
×
 
 
×
×
 
×
 
×
 
×
 
 
U0121:00
 
 
 
×
×
×
×
 
×
 
×
 
×
 
 
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
 
 
 
 
 
 
 
 
 
×
×
 
×
 
 
AFS*4
 
 
 
 
 
 
 
 
 
 
 
×
×
 
 
RKE*5
 
 
 
 
 
 
 
 
 
 
 
 
 
×
 
IC
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×

*1  :With DSC
*2  :With ABS
*3  :With rear vehicle monitoring system
*4  :With AFS (adaptive front lighting system)
*5  :With advanced keyless entry and push button start system

A


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

am3zzw00008886


Inspection item

•  PCM connector
•  Wiring harness between PCM terminal 2AD and branch A
•  Wiring harness between PCM terminal 2AH and branch A
•  PCM


B


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

am3zzw00008887


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


C


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

am3zzw00008888


Inspection item

•  Connector C-41
•  Wiring harness between branch A and connector C-41


D


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness DSC HU/CM and connector C-41
•  Connector C-41 malfunction
•  DSC HU/CM malfunction


System wiring diagram

am3zzw00008889


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


E


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness ABS HU/CM and connector C-41
•  Connector C-41 malfunction
•  ABS HU/CM malfunction


System wiring diagram

am3zzw00008890


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


F


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between connector C-41 and BCM
•  Connector C-41 malfunction
•  BCM malfunction


System wiring diagram

am3zzw00008891


Inspection item

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


G


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 between connector C-17 and branch B
•  Connector C-17 malfunction
•  BCM malfunction


System wiring diagram

am3zzw00008892


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


H


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

am3zzw00008893


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)


I


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness branch B and connector C-17
•  Open circuit in wiring harness connector C-17 and branch C
•  Connector C-17 malfunction


System wiring diagram

am3zzw00008894


Inspection item

•  connector C-17
•  Wiring harness between branch B and connector C-17
•  Wiring harness between connector C-17 and branch C


J


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness SAS control module and branch C
•  SAS control module malfunction


System wiring diagram

am3zzw00008895


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


K


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between branch C and connector C-43
•  Connector C-43 malfunction


System wiring diagram

am3zzw00008896


Inspection item

•  Connector C-43
•  Wiring harness between branch C and connector C-43


L


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between AFS control module and connector C-43
•  Connector C-43 malfunction
•  AFS control module malfunction


System wiring diagram

am3zzw00008897


Inspection item

•  Connector C-43
•  AFS control module connector
•  Wiring harness between AFS control module terminal B and connector C-43
•  Wiring harness between AFS control module terminal A and connector C-43
•  AFS control module


M


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between connector C-43 and connector C-47
•  Connector C-43 malfunction
•  Connector C-47 malfunction


System wiring diagram

am3zzw00008898


Inspection item

•  Connector C-43
•  Connector C-47
•  Wiring harness between connector C-43 and connector C-47


N


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between keyless control module and connector C-47
•  Connector C-47 malfunction
•  Keyless control module malfunction


System wiring diagram

am3zzw00008899


Inspection item

•  Keyless control module connector
•  Connector C-47
•  Wiring harness between keyless control module terminal 2K and connector C-47
•  Wiring harness between keyless control module terminal 2L and connector C-47
•  Keyless control module


O


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between connector C-47 and Instrument cluster
•  Connector C-47 malfunction
•  Instrument cluster malfunction


System wiring diagram

am3zzw00008900


Inspection item

•  Instrument cluster connector
•  Connector C-47
•  Wiring harness between instrument cluster terminal 2B and connector C-47
•  Wiring harness between instrument cluster terminal 2D and connector C-47
•  Instrument cluster