DETERMINING MALFUNCTIONING PART (HS-CAN) [MULTIPLEX COMMUNICATION SYSTEM (L8, LF, L5, MZR-CD (RF Turbo))]

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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 (L8, LF, L5, MZR-CD (RF Turbo))].)
―  Instrument cluster: U0100:87, U401:68, U0402:68, U0415:68, U0515:68
―  EPS control module: U0401:00
―  DSC HU/CM: U0401:00, U0401:68, U0402:00
―  Keyless control module: U0401:68
―  BCM: U0401:68, U0402:68

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 (L8, LF, L5, MZR-CD (RF Turbo))].


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

IC
(Instrument cluster)
U0100:00
×
 
×
 
×
 
×
 
×
 
×
×
 
 
×
U0100:87
-
 
-
 
-
 
-
 
-
 
-
-
 
 
-
U0101:00
 
×
×
 
×
 
×
 
×
 
×
×
 
 
×
U0121:00
 
 
 
 
 
×
×
 
×
 
×
×
 
 
×
U0131:00
 
 
 
×
×
 
×
 
×
 
×
×
 
 
×
U0140:00
 
 
 
 
 
 
 
 
 
 
 
×
 
 
×
U0151:00
 
 
 
 
 
 
 
 
 
 
 
 
 
×
×
U0166:00
 
 
 
 
 
 
 
×
×
 
×
×
 
 
×
U0182:00
 
 
 
 
 
 
 
 
 
 
 
 
×
 
×
U0214:00
 
 
 
 
 
 
 
 
 
×
×
×
 
 
×
U0401:68
-
 
-
 
-
 
-
 
-
 
-
-
 
 
 
U0402:68
 
-
-
 
-
 
-
 
-
 
-
-
 
 
 
U0415:68
 
 
 
 
 
-
 
 
-
 
-
-
 
 
 
U0515:68
 
 
 
 
 
 
 
 
 
-
-
-
 
 
 
PCM
(PCM (L8, LF, L5))
U0101:00
 
×
 
 
 
 
 
 
 
 
 
 
 
 
 
U0121:00
 
 
 
 
 
×
 
 
 
 
 
 
 
 
 
U0131:00
 
 
 
×
 
 
 
 
 
 
 
 
 
 
 
U0140:00
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U0151:00
 
 
 
 
 
 
 
 
 
 
 
 
 
×
 
U0155:00
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PCM
(PCM (MZR-CD (RF Turbo)))
U0121:00
 
 
 
 
 
×
 
 
 
 
 
 
 
 
 
U0155:00
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
TCM*3
(TCM)
U0100:00
×
 
 
 
 
 
 
 
 
 
 
 
 
 
 
EPS
(EPS control module)
U0100:00
×
 
×
 
 
 
 
 
 
 
 
 
 
 
 
U0401:00
-
 
-
 
 
-
 
 
 
 
 
 
 
 
 
ABS*1
(ABS HU/CM)
U0100:00
×
 
×
 
×
 
 
 
 
 
 
 
 
 
 
U0214:00
 
 
 
 
 
 
 
 
 
×
 
 
 
 
 
ABS*2
(DSC HU/CM)
U0100:00
×
 
×
 
×
 
 
 
 
-
 
 
 
 
 
U0101:00
 
×
-
 
-
 
 
 
 
-
 
 
 
 
 
U0140:00
 
 
 
 
 
 
 
 
 
-
 
 
 
 
 
U0155:00
 
 
 
 
 
 
 
 
 
-
 
 
 
 
 
U0214:00
 
 
 
 
 
 
 
 
 
×
 
 
 
 
 
U0401:00
-
 
-
 
-
 
 
 
 
 
 
 
 
 
 
U0401:68
-
 
-
 
-
 
 
 
 
 
 
 
 
 
 
U0402:00
 
-
-
 
-
 
 
 
 
 
 
 
 
 
 
FFH
(Water heater unit (with water heater system))
U0100:00
×
 
×
 
×
 
×
 
 
 
 
 
 
 
 
U0140:00
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U0155:00
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
RKE
(Keyless control module (with advanced keyless entry and start system))
U0100:00
×
 
×
 
×
 
×
 
×
 
 
 
 
 
 
U0100:87
-
 
-
 
-
 
-
 
-
 
 
 
 
 
-
U0101:00
 
×
×
 
×
 
×
 
×
 
 
 
 
 
 
U0121:00
 
 
 
 
 
×
-
 
-
 
 
 
 
 
 
U0401:68
-
 
-
 
-
 
-
 
-
 
 
 
 
 
 
BCM/GEM
(BCM)
U0100:00
×
 
×
 
×
 
×
 
×
 
×
 
 
 
 
U0101:00
 
×
×
 
×
 
×
 
×
 
×
 
 
 
 
U0151:00
 
 
 
 
 
 
 
 
 
 
 
 
 
×
 
U0214:00
 
 
 
 
 
 
 
 
 
×
×
 
 
 
 
U0401:68
-
 
-
 
-
-
-
 
-
 
-
 
 
 
-
U0402:68
 
-
-
 
-
 
-
 
-
 
-
 
 
 
 
RCM
(SAS control module)
U0155:00
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
M-MDS display module
“Fail” display pattern
PCM
×
 
×
 
×
 
×
 
×
 
×
×
 
 
×
TCM*3
 
×
×
 
×
 
×
 
×
 
×
×
 
 
×
EPS
 
 
 
×
×
 
×
 
×
 
×
×
 
 
×
ABS
 
 
 
 
 
×
×
 
×
 
×
×
 
 
×
FFH
 
 
 
 
 
 
 
×
×
 
×
×
 
 
×
RKE
 
 
 
 
 
 
 
 
 
×
×
×
 
 
 
BCM/GEM
 
 
 
 
 
 
 
 
 
 
 
×
 
 
×
RCM
 
 
 
 
 
 
 
 
 
 
 
 
 
×
×
IC
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

*1  :Vehicles with ABS
*2  :Vehicles with DSC
*3  :ATX

A


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between PCM and connector C-09
•  PCM malfunction


System wiring diagram

am6zzw00003963


Inspection item

•  PCM connector
•  Wiring harness between PCM terminal 1AM and connector C-09 (L8, LF, L5)
•  Wiring harness between PCM terminal 1AI and connector C-09 (L8, LF, L5)
•  Wiring harness between PCM terminal 95 and connector C-09 (MZR-CD (RF Turbo))
•  Wiring harness between PCM terminal 87 and connector C-09 (MZR-CD (RF Turbo))
•  PCM


B


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between TCM and connector C-09
•  TCM malfunction


System wiring diagram

am6zzw00003964


Inspection item

•  TCM connector
•  Wiring harness between TCM terminal 2W and connector C-09
•  Wiring harness between TCM terminal 2X and connector C-09
•  TCM


C


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between connector C-09 and branch A
•  Connector C-09 malfunction


System wiring diagram

am6zzw00003965


Inspection item

•  Connector C-09
•  Wiring harness between connector C-09 and branch A


D


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

am6zzw00003966


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


E


Possible cause

L8, LF, L5
•  Open circuit in wiring harness between branch A and branch B
MZR-CD (RF Turbo)
•  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

am6zzw00003967


Inspection item

L8, LF, L5
•  Wiring harness between branch A and branch B
MZR-CD (RF Turbo)
•  Connector C-63
•  Wiring harness between branch A and connector C-63
•  Wiring harness between connector C-63 and branch B


F


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness ABS HU/CM and branch B
•  Open circuit in wiring harness DSC HU/CM and branch B
•  ABS HU/CM malfunction
•  DSC HU/CM malfunction


System wiring diagram

am6zzw00003968


Inspection item

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


G


Possible cause

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


System wiring diagram

am6zzw00003969


Inspection item

•  Wiring harness between branch B and branch C


H


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

am6zzw00003970


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


I


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


System wiring diagram

am6zzw00003971


Inspection item

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


J


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between connector C-33 and keyless control module
•  Keyless control module malfunction


System wiring diagram

am6zzw00003972


Inspection item

•  Connector C-33
•  Keyless control module connector
•  Wiring harness between keyless control module terminal 2G connector C-33
•  Wiring harness between keyless control module terminal 2I connector C-33
•  Keyless control module


K


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between connector C-33 and BCM


System wiring diagram

am6zzw00003973


Inspection item

•  BCM connector
•  Wiring harness between BCM terminal 6D and connector C-33
•  Wiring harness between BCM terminal 6B and connector C-33


L


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

am6zzw00003974


Inspection item

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


M


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between SAS control module and connector C-18
•  SAS control module malfunction


System wiring diagram

am6zzw00003975


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


N


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between AFS control module and connector C-19
•  AFS control module malfunction


System wiring diagram

am6zzw00003976


Inspection item

•  AFS control module connector
•  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


O


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between connector C-18 and connector C-19
•  Open circuit in wiring harness between connector C-19 and Instrument cluster
•  Instrument cluster malfunction


System wiring diagram

am6zzw00003977


Inspection item

•  Instrument cluster connector
•  Connector C-18
•  Connector C-19
•  Wiring harness between connector C-18 and connector C-19
•  Wiring harness between instrument cluster terminal 2W and connector C-19
•  Wiring harness between instrument cluster terminal 2X and connector C-19
•  Instrument cluster