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

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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 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 “דis 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 (AW6A-EL, AW6AX-EL): U0415
―  TCM (AY6A-EL, AY6AX-EL): U0415:00
―  BCM: U0401
―  Position memory control module: U0431:68
―  Keyless control module: U2023
―  Instrument cluster: U2510

3.  Refer to the matching tandem diagnostic results (A to P) 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 [MULTIPLEX COMMUNICATION SYSTEM (R.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
PCM
(PCM*1)
U0101
 
×
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U0129
 
 
 
×
 
 
 
 
 
 
 
 
 
 
 
 
U0155
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
PCM
(PCM*2)
U0101:00
 
×
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U0140:00
 
 
 
 
 
×
 
 
 
 
 
 
 
 
 
 
TCM
(TCM*3)
U0100
×
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U0121
 
 
 
×
 
 
 
 
 
 
 
 
 
 
 
 
U0140
 
 
 
 
 
×
 
 
 
 
 
 
 
 
 
 
U0415
 
 
 
-
 
 
 
 
 
 
 
 
 
 
 
 
TCM
(TCM*4)
U0100:00
×
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
U0121:00
 
 
 
×
 
 
 
 
 
 
 
 
 
 
 
 
U0155:00
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
U0415:00
 
 
 
-
 
 
 
 
 
 
 
 
 
 
 
 
ABS
(DSC/RSC HU/CM)
U0100
×
 
×
 
 
 
 
 
 
 
 
 
 
 
 
 
U0140
 
 
 
 
 
×
 
 
 
 
 
 
 
 
 
 
U0155
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
GEM
(BCM)
U0100
×
 
×
 
×
 
 
 
 
 
 
 
 
 
 
 
U0101
 
×
×
 
×
 
 
 
 
 
 
 
 
 
 
 
U0121
 
 
 
×
×
 
 
 
 
 
 
 
 
 
 
 
U0401
-
 
-
 
-
 
 
 
 
 
 
 
 
 
 
 
4×4*5
(4WD control module)
U0100
×
 
×
 
×
 
 
 
 
 
 
 
 
 
 
 
U0101
 
×
×
 
×
 
 
 
 
 
 
 
 
 
 
 
U0121
 
 
 
×
×
 
 
 
 
 
 
 
 
 
 
 
U0155
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
LTM*6
(PLG control module)
U0100
×
 
×
 
×
 
 
×
 
 
 
 
 
 
 
 
U0101
 
×
×
 
×
 
 
×
 
 
 
 
 
 
 
 
U0140
 
 
 
 
 
×
 
×
 
 
 
 
 
 
 
 
U0155
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
U0214
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
 
DSM*7
(Position memory control module)
U0100:00
×
 
×
 
×
 
 
×
 
×
 
 
 
 
 
 
U0101:00
 
×
×
 
×
 
 
×
 
×
 
 
 
 
 
 
U0121:00
 
 
 
×
×
 
 
×
 
×
 
 
 
 
 
 
U0140:00
 
 
 
 
 
×
 
×
 
×
 
 
 
 
 
 
U0155:00
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
U0431:68
 
 
 
 
 
-
 
-
 
-
 
 
 
 
 
 
RCM
(SAS control module)
U0155
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
RKE*8
(Keyless control module)
U0100
×
 
×
 
×
 
 
×
 
×
 
×
 
×
 
 
U0140
 
 
 
 
 
×
 
×
 
×
 
×
 
×
 
 
U0323
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
U2023
-
 
-
 
-
 
 
-
 
-
 
-
 
-
 
 
IC
(Instrument cluster)
U0100
×
 
×
 
×
 
 
×
 
×
 
×
 
×
 
 
U0101
 
×
×
 
×
 
 
×
 
×
 
×
 
×
 
 
U0114
 
 
 
 
 
 
×
×
 
×
 
×
 
×
 
 
U0121
 
 
 
×
×
 
 
×
 
×
 
×
 
×
 
 
U0140
 
 
 
 
 
×
 
×
 
×
 
×
 
×
 
 
U0151
 
 
 
 
 
 
 
 
 
 
 
 
×
×
 
 
U0214
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
 
U2510
-
 
-
 
-
 
 
-
 
-
 
-
 
-
 
 
M-MDS display module
“Fail” display pattern
PCM
×
 
×
 
×
 
 
×
 
×
 
×
 
×
 
 
TCM
 
×
×
 
×
 
 
×
 
×
 
×
 
×
 
 
ABS
 
 
 
×
×
 
 
×
 
×
 
×
 
×
 
 
GEM
 
 
 
 
 
×
 
×
 
×
 
×
 
×
 
 
4×4*5
 
 
 
 
 
 
×
×
 
×
 
×
 
×
 
 
LTM*6
 
 
 
 
 
 
 
 
×
×
 
×
 
×
 
 
DSM*7
 
 
 
 
 
 
 
 
 
 
×
×
 
×
 
 
RCM
 
 
 
 
 
 
 
 
 
 
 
 
×
×
 
 
RKE*8
 
 
 
 
 
 
 
 
 
 
 
 
 
 
×
 
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
Reference page
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P

*1  :PCM connector (2 types)
*2  :PCM connector (3 types)
*3  :AW6A-EL, AW6AX-EL
*4  :AY6A-EL, AY6AX-EL
*5  :With 4WD
*6  :With PLG system
*7  :With position memory control system
*8  :With advanced keyless entry and 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

ac9wzw00001831


Inspection item

•  PCM connector
•  Wiring harness between PCM (PCM connector (2 types)) terminal 1BL and branch A
•  Wiring harness between PCM (PCM connector (2 types)) terminal 1BG and branch A
•  Wiring harness between PCM (PCM connector (3 types)) terminal 1AH and branch A
•  Wiring harness between PCM (PCM connector (3 types)) terminal 1AL and branch A
•  PCM


B


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between TCM and connector C-03
•  Open circuit in wiring harness between connector C-03 and branch A
•  TCM malfunction
•  Connector C-03 malfunction


System wiring diagram

ac9wzw00001832


Inspection item

•  TCM connector
•  Connector C-03
•  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


C


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

ac9wzw00001833


Inspection item

•  Connector C-36
•  Wiring harness between branch A and connector C-36


D


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness DSC/RSC HU/CM and connector C-36
•  Connector C-36 malfunction
•  DSC/RSC HU/CM malfunction


System wiring diagram

ac9wzw00001834


Inspection item

•  DSC/RSC HU/CM connector
•  Connector C-36
•  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


E


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between connector C-36 and BCM
•  Connector C-36 malfunction
•  BCM malfunction


System wiring diagram

ac9wzw00001835


Inspection item

•  Connector C-36
•  BCM 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 3AD
―  BCM terminal 1J and terminal 3AC


F


Possible cause

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


System wiring diagram

ac9wzw00001836


Inspection item

•  BCM


G


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness 4WD control module and BCM
•  BCM malfunction
•  4WD control module malfunction


System wiring diagram

ac9wzw00001837


Inspection item

•  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
•  Inspect for continuity between the following terminals:
―  BCM terminal 6J and terminal 3AD
―  BCM terminal 6H and terminal 3AC
•  4WD control module


H


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

ac9wzw00001838
Inspection item
•  BCM connector
•  Wiring harness between BCM terminal 3AD and branch B
•  Wiring harness between BCM terminal 3AC and branch B
•  Inspect for continuity between the following terminals:
―  BCM terminal 1L and terminal 3AD
―  BCM terminal 1J and terminal 3AC


Without 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

ac9wzw00001839
Inspection item
•  BCM connector
•  Wiring harness between BCM terminal 3AD and branch B
•  Wiring harness between BCM terminal 3AC and branch B
•  Inspect for continuity between the following terminals:
―  BCM terminal 1L and terminal 3AD
―  BCM terminal 1J and terminal 3AC


I


Possible cause

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


System wiring diagram

ac9wzw00001840


Inspection item

•  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


J


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

ac9wzw00001841


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


K


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit wiring harness branch C and connector C-51
•  Open circuit in wiring harness position memory control module and connector C-51
•  Connector C-51 malfunction
•  Position memory control module malfunction


System wiring diagram

ac9wzw00001842


Inspection item

•  Connector C-51
•  Position memory control module connector
•  Wiring harness between blanch C and connector C-51
•  Wiring harness between position memory control module terminal 1I and connector C-51
•  Wiring harness between position memory control module terminal 1J and connector C-51
•  Position memory control module


L


PCM connector (2 types)

Possible cause
•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between branch C and connector C-11
•  Open circuit in wiring harness between connector C-11 and branch D
•  Connector C-11 malfunction

System wiring diagram

ac9wzw00001843
Inspection item
•  Connector C-11
•  Wiring harness between branch C and connector C-11
•  Wiring harness between connector C-11 and branch D


PCM connector (3 types)

Possible cause
•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between branch C and connector C-11
•  Open circuit in wiring harness between connector C-11 and connector C-38
•  Connector C-38 malfunction
•  Connector C-11 malfunction

System wiring diagram

ac9wzw00001844
Inspection item
•  Connector C-38
•  Connector C-11
•  Wiring harness between branch C and connector C-11
•  Wiring harness between connector C-11 and connector C-38


M


PCM connector (2 types)

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

System wiring diagram

ac9wzw00001845
Inspection item
•  SAS control module connector
•  Wiring harness between SAS control module terminal 1X and branch D
•  Wiring harness between SAS control module terminal 1T and branch D
•  SAS control module


PCM connector (3 types)

Possible cause
•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness SAS control module and connector C-38
•  Connector C-38 malfunction
•  SAS control module malfunction

System wiring diagram

ac9wzw00001846
Inspection item
•  SAS control module connector
•  Connector C-38
•  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


N


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between branch D and connector C-38
•  Connector C-38 malfunction


System wiring diagram

ac9wzw00001847


Inspection item

•  Connector C-38
•  Wiring harness between branch D and connector C-38


O


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between keyless control module and connector C-38
•  Connector C-38 malfunction
•  Keyless control module malfunction


System wiring diagram

ac9wzw00001848


Inspection item

•  Keyless control module connector
•  Connector C-38
•  Wiring harness between keyless control module terminal 3X and connector C-38
•  Wiring harness between keyless control module terminal 3W and connector C-38
•  Keyless control module


P


Possible cause

•  Connector terminal disconnection, poor contact, damage, deformation, corrosion
•  Open circuit in wiring harness between connector C-38 and Instrument cluster
•  Connector C-38 malfunction
•  Instrument cluster malfunction


System wiring diagram

ac9wzw00001849


Inspection item

•  Instrument cluster connector
•  Connector C-38
•  Wiring harness between instrument cluster terminal 1X and connector C-38
•  Wiring harness between instrument cluster terminal 1W and connector C-38
•  Instrument cluster