Nissan Murano Z51 (2012 year). Manual — part 38
IP-20
< REMOVAL AND INSTALLATION >
CENTER CONSOLE ASSEMBLY
CENTER CONSOLE ASSEMBLY
Exploded View
INFOID:0000000007542489
1.
Instrument lower cover RH
2.
Instrument lower cover LH
3.
Instrument stay LH
4.
Front console bracket
5.
Console reinforcement
6.
Lower console finisher LH
7.
Console harness
8.
Inside key antenna
9.
Rear console pocket
10. Console mask
11.
Console rear finisher
12. Center console assembly
13. Socket and bulb
14. Console finisher assembly
15. Cup holder assembly
16. Ashtray
17. Cigarette lighter ring
18. Cigarette lighter complete
19. Socket knob
20. Socket inner case
21. Console mat
22. Console switch finisher
23. USB connector
24. Lower console assembly
25. Auxiliary input jacks
26. Socket knob
27. Socket ring
28. Socket inner case
29. Lower console finisher RH
30. Front console pocket
JMJIA4761ZZ
Revision: 2013 February
2012 MURANO
CENTER CONSOLE ASSEMBLY
IP-21
< REMOVAL AND INSTALLATION >
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Removal and Installation
INFOID:0000000007542490
CAUTION:
When removing, always use a remover tool that is made of plastic.
REMOVAL
1.
Remove selector lever knob. Refer to
TM-151, "Removal and Installation"
.
2.
Remove console finisher assembly.
1.
Open the console lid.
2.
Remove console finisher assembly (1) fixing pawls and
metal clips with remover tool (A).
3.
Pull up console finisher assembly.
4.
Disconnect harness connectors.
3.
Remove front console pocket.
1.
Remove front console pocket (1) fixing screw (A).
2.
Pull up front console pocket, and then disengage metal
clips.
3.
Disconnect harness connectors.
4.
Remove rear console pocket.
1.
Open the rear console pocket (1).
2.
Release rear console pocket lock.
5.
Remove console rear finisher.
1.
Remove console mask (1) with flat-bladed screwdriver (A).
: Pawl
: Metal clip
JMJIA1334ZZ
: Metal clip
JMJIA1335ZZ
JMJIA1336ZZ
: Pawl
JMJIA1337ZZ
Revision: 2013 February
2012 MURANO
IP-22
< REMOVAL AND INSTALLATION >
CENTER CONSOLE ASSEMBLY
2.
Remove console rear finisher (2) fixing screws (A).
3.
Pull back console rear finisher.
4.
Disconnect harness connectors.
6.
Remove center console assembly.
1.
Remove center console assembly (1) fixing screws (A).
2.
Lift up back side and pull back.
7.
Remove instrument lower cover LH and RH.
1.
Disengage instrument lower cover LH (1) fixing pawls.
2.
Pull back instrument lower cover LH.
3.
Disengage instrument lower cover RH (2) fixing pawls and
clip.
4.
Pull the instrument lower cover RH crosswise.
8.
Remove lower console finisher LH and RH.
1.
Remove lower console finisher LH (1) fixing screws (A).
2.
Remove lower console finisher LH fixing clip (B).
3.
Remove lower console finisher LH fixing clip (C).
4.
Pull the console finisher LH crosswise.
5.
Remove lower console finisher RH (2) fixing screws (D).
6.
Remove lower console finisher RH fixing clip (E).
7.
Remove lower console finisher RH fixing clip (F).
8.
Pull the console finisher RH crosswise.
9.
Remove lower console assembly.
1.
Remove lower console assembly (1) fixing screws (A).
2.
Remove lower console assembly fixing bolts (B).
3.
Disconnect harness connectors.
: Metal clip
JMJIA1401ZZ
JMJIA1338ZZ
: Clip
: Pawl
JMJIA1339ZZ
: Clip
JMJIA1340ZZ
JMJIA1341ZZ
Revision: 2013 February
2012 MURANO
CENTER CONSOLE ASSEMBLY
IP-23
< REMOVAL AND INSTALLATION >
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NOTE:
Remove following parts after removing lower console assembly.
• USB connector: Refer to
AV-259, "Removal and Installation"
.
• Auxiliary input jacks: Refer to
AV-258, "Removal and Installation"
.
• Console power socket: Refer to
PWO-7, "CONSOLE POWER SOCKET : Removal and Installation"
10. Remove CVT shift selector. Refer to
TM-151, "Removal and Installation"
.
11. Remove console reinforcement.
1.
Remove console reinforcement (1) fixing nuts (A).
2.
Remove console reinforcement fixing bolts (B).
3.
Remove harness clip.
12. Remove instrument stay LH fixing nuts, and then remove instrument stay LH.
13. Remove front console bracket fixing bolt and nuts, and then remove front console bracket.
INSTALLATION
Install in the reverse order of removal.
: Clip
JMJIA1342ZZ
Revision: 2013 February
2012 MURANO
LAN
LAN-1
ELECTRICAL & POWER CONTROL
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SECTION
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CONTENTS
LAN SYSTEM
CAN FUNDAMENTAL
PRECAUTION . . . . . . . . . . . ...
PRECAUTIONS . . . . . . . . . . . . ...
Precautions for Trouble Diagnosis . . . . . . ....
Precautions for Harness Repair . . . . . . . ....
SYSTEM DESCRIPTION . . . . . . . ..
CAN COMMUNICATION SYSTEM . . . . . .
System Description . . . . . . . . . . . . ...
System Diagram . . . . . . . . . . . . . ....
CAN Communication Control Circuit . . . . . .....
DIAG ON CAN . . . . . . . . . . . . . .
Description . . . . . . . . . . . . . . . ....
System Diagram . . . . . . . . . . . . . ....
TROUBLE DIAGNOSIS . . . . . . . . . ..
Condition of Error Detection . . . . . . . . . ..
Symptom When Error Occurs in CAN Communi-
cation System . . . . . . . . . . . . . . ....
CAN Diagnosis with CONSULT . . . . . . . ..
Self-Diagnosis . . . . . . . . . . . . . . .
CAN Diagnostic Support Monitor . . . . . . .
How to Use CAN Communication Signal Chart . ..
BASIC INSPECTION . . . . . . . . ...
DIAGNOSIS AND REPAIR WORKFLOW . . .
Trouble Diagnosis Flow Chart . . . . . . . . .
Trouble Diagnosis Procedure . . . . . . . . ..
CAN
HOW TO USE THIS MANUAL . . . . . .
HOW TO USE THIS SECTION . . . . . . ...
Caution . . . . . . . . . . . . . . . . .
Abbreviation List . . . . . . . . . . . . . ..
PRECAUTION . . . . . . . . . . . ..
PRECAUTIONS . . . . . . . . . . . . .
FOR USA AND CANADA . . . . . . . . . . ..
FOR USA AND CANADA : Precautions for Trou-
ble Diagnosis . . . . . . . . . . . . . . ...
FOR USA AND CANADA : Precautions for Har-
ness Repair . . . . . . . . . . . . . . . .
FOR MEXICO . . . . . . . . . . . . . . . .
FOR MEXICO : Precautions for Trouble Diagnosis
.
FOR MEXICO : Precautions for Harness Repair . .
BASIC INSPECTION . . . . . . . . ...
DIAGNOSIS AND REPAIR WORKFLOW . .
Interview Sheet . . . . . . . . . . . . . .
SYSTEM DESCRIPTION . . . . . . . .
CAN COMMUNICATION SYSTEM . . . . ...
CAN System Specification Chart . . . . . . . .
CAN Communication Signal Chart . . . . . . ..
DTC/CIRCUIT DIAGNOSIS . . . . . . .
CAN COMMUNICATION SYSTEM . . . . ...
Component Parts Location . . . . . . . . . ..
Wiring Diagram - CAN SYSTEM - . . . . . . ...
MALFUNCTION AREA CHART . . . . . .
Main Line . . . . . . . . . . . . . . . . .
Branch Line . . . . . . . . . . . . . . . .
Short Circuit . . . . . . . . . . . . . . . .
MAIN LINE BETWEEN ADP AND PWBD CIR-
CUIT . . . . . . . . . . . . . . . . ..
Revision: 2013 February
2012 MURANO
LAN-2
Diagnosis Procedure . . . . . . . . . . . ..
MAIN LINE BETWEEN PWBD AND M&A CIR-
CUIT . . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
MAIN LINE BETWEEN M&A AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
MAIN LINE BETWEEN DLC AND TCM CIR-
CUIT . . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
ECM BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ..
ADP BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ..
PWBD BRANCH LINE CIRCUIT . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
4WD BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ..
AV BRANCH LINE CIRCUIT . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
HVAC BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
M&A BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ..
A-BAG BRANCH LINE CIRCUIT . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ..
BCM BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ..
DLC BRANCH LINE CIRCUIT . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ..
STRG BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
ABS BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ..
TCM BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ..
IPDM-E BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
CAN COMMUNICATION CIRCUIT . . . . .
Diagnosis Procedure . . . . . . . . . . . ..
CAN SYSTEM (TYPE 1)
DTC/CIRCUIT DIAGNOSIS . . . . . . .
MAIN LINE BETWEEN M&A AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
MAIN LINE BETWEEN DLC AND TCM CIR-
CUIT . . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
ECM BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
HVAC BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
M&A BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
A-BAG BRANCH LINE CIRCUIT . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
BCM BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
DLC BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
STRG BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
ABS BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
TCM BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
IPDM-E BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
CAN COMMUNICATION CIRCUIT . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
CAN SYSTEM (TYPE 2)
DTC/CIRCUIT DIAGNOSIS . . . . . .
MAIN LINE BETWEEN M&A AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
MAIN LINE BETWEEN DLC AND TCM CIR-
CUIT . . . . . . . . . . . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
ECM BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
AV BRANCH LINE CIRCUIT . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
HVAC BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
M&A BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
Revision: 2013 February
2012 MURANO
LAN
LAN-3
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A-BAG BRANCH LINE CIRCUIT . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
BCM BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
DLC BRANCH LINE CIRCUIT . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
STRG BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
ABS BRANCH LINE CIRCUIT . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
TCM BRANCH LINE CIRCUIT . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
IPDM-E BRANCH LINE CIRCUIT . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
CAN COMMUNICATION CIRCUIT . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
CAN SYSTEM (TYPE 3)
DTC/CIRCUIT DIAGNOSIS . . . . . . .
MAIN LINE BETWEEN ADP AND PWBD CIR-
CUIT . . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
MAIN LINE BETWEEN PWBD AND M&A CIR-
CUIT . . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
MAIN LINE BETWEEN M&A AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
MAIN LINE BETWEEN DLC AND TCM CIR-
CUIT . . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
ECM BRANCH LINE CIRCUIT . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
ADP BRANCH LINE CIRCUIT . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
PWBD BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
AV BRANCH LINE CIRCUIT . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
HVAC BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
M&A BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
A-BAG BRANCH LINE CIRCUIT . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
BCM BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
DLC BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
STRG BRANCH LINE CIRCUIT . . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
ABS BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
TCM BRANCH LINE CIRCUIT . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . ...
IPDM-E BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . ...
CAN COMMUNICATION CIRCUIT . . . . ...
Diagnosis Procedure . . . . . . . . . . . ...
CAN SYSTEM (TYPE 4)
DTC/CIRCUIT DIAGNOSIS . . . . . ...
MAIN LINE BETWEEN M&A AND DLC CIR-
CUIT . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
MAIN LINE BETWEEN DLC AND TCM CIR-
CUIT . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
ECM BRANCH LINE CIRCUIT . . . . . ...
Diagnosis Procedure . . . . . . . . . . . .
4WD BRANCH LINE CIRCUIT . . . . . ...
Diagnosis Procedure . . . . . . . . . . . .
HVAC BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
M&A BRANCH LINE CIRCUIT . . . . . ...
Diagnosis Procedure . . . . . . . . . . . .
A-BAG BRANCH LINE CIRCUIT . . . . .
Diagnosis Procedure . . . . . . . . . . . .
BCM BRANCH LINE CIRCUIT . . . . . ...
Diagnosis Procedure . . . . . . . . . . . .
DLC BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
STRG BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
ABS BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
TCM BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
IPDM-E BRANCH LINE CIRCUIT . . . . ...
Revision: 2013 February
2012 MURANO
LAN-4
Diagnosis Procedure . . . . . . . . . . . .
CAN COMMUNICATION CIRCUIT . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
CAN SYSTEM (TYPE 5)
DTC/CIRCUIT DIAGNOSIS . . . . . .
MAIN LINE BETWEEN M&A AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
MAIN LINE BETWEEN DLC AND TCM CIR-
CUIT . . . . . . . . . . . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
ECM BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
4WD BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
AV BRANCH LINE CIRCUIT . . . . . . ...
Diagnosis Procedure . . . . . . . . . . . .
HVAC BRANCH LINE CIRCUIT . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
M&A BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
A-BAG BRANCH LINE CIRCUIT . . . . .
Diagnosis Procedure . . . . . . . . . . . .
BCM BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
DLC BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
STRG BRANCH LINE CIRCUIT . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
ABS BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
TCM BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
IPDM-E BRANCH LINE CIRCUIT . . . . ...
Diagnosis Procedure . . . . . . . . . . . .
CAN COMMUNICATION CIRCUIT . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
CAN SYSTEM (TYPE 6)
DTC/CIRCUIT DIAGNOSIS . . . . . .
MAIN LINE BETWEEN ADP AND PWBD CIR-
CUIT . . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
MAIN LINE BETWEEN PWBD AND M&A CIR-
CUIT . . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
MAIN LINE BETWEEN M&A AND DLC CIR-
CUIT . . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
MAIN LINE BETWEEN DLC AND TCM CIR-
CUIT . . . . . . . . . . . . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
ECM BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
ADP BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
PWBD BRANCH LINE CIRCUIT . . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
4WD BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
AV BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
HVAC BRANCH LINE CIRCUIT . . . . . ...
Diagnosis Procedure . . . . . . . . . . . .
M&A BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
A-BAG BRANCH LINE CIRCUIT . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
BCM BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
DLC BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
STRG BRANCH LINE CIRCUIT . . . . . ...
Diagnosis Procedure . . . . . . . . . . . .
ABS BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
TCM BRANCH LINE CIRCUIT . . . . . . .
Diagnosis Procedure . . . . . . . . . . . .
IPDM-E BRANCH LINE CIRCUIT . . . . .
Diagnosis Procedure . . . . . . . . . . . .
CAN COMMUNICATION CIRCUIT . . . . ..
Diagnosis Procedure . . . . . . . . . . . .
Revision: 2013 February
2012 MURANO
LAN
PRECAUTIONS
LAN-5
< PRECAUTION >
[CAN FUNDAMENTAL]
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PRECAUTION
PRECAUTIONS
Precautions for Trouble Diagnosis
INFOID:0000000007544225
CAUTION:
• Never apply 7.0 V or more to the measurement terminal.
• Use a tester with open terminal voltage of 7.0 V or less.
• Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when
checking the harness.
Precautions for Harness Repair
INFOID:0000000007544226
• Solder the repaired area and wrap tape around the soldered area.
NOTE:
A fray of twisted lines must be within 110 mm (4.33 in).
• Bypass connection is never allowed at the repaired area.
NOTE:
Bypass connection may cause CAN communication error. The
spliced wire becomes separated and the characteristics of twisted
line are lost.
• Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communica-
tion line.
SKIB8766E
SKIB8767E
Revision: 2013 February
2012 MURANO
LAN-6
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
CAN COMMUNICATION SYSTEM
SYSTEM DESCRIPTION
CAN COMMUNICATION SYSTEM
System Description
INFOID:0000000007544227
• CAN communication is a multiplex communication system. This enables the system to transmit and receive
large quantities of data at high speed by connecting control units with two communication lines (CAN-H and
CAN-L).
• Control units on the CAN network transmit signals using the CAN communication control circuit. They
receive only necessary signals from other control units to operate various functions.
• CAN communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.
System Diagram
INFOID:0000000007544228
Each control unit passes an electric current to the termination circuits when transmitting CAN communication
signal. The termination circuits produce an electrical potential difference between CAN-H and CAN-L. CAN
communication system transmits and receives CAN communication signals by the potential difference.
SKIB8887E
Component
Description
Main line
CAN communication line between splices
Branch line
CAN communication line between splice and a control unit
Splice
A point connecting a branch line with a main line
Termination circuit
LAN-7, "CAN Communication Control Circuit"
.
Revision: 2013 February
2012 MURANO
LAN
CAN COMMUNICATION SYSTEM
LAN-7
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
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CAN Communication Control Circuit
INFOID:0000000007544229
*: These are the only control units wired with both ends of CAN communication system.
SKIB8713E
Component
System description
CAN controller
It controls CAN communication signal transmission and reception, error detection, etc.
Transceiver IC
It converts digital signal into CAN communication signal, and CAN communication signal into digital
signal.
Noise filter
It eliminates noise of CAN communication signal.
Termination circuit
*
(Resistance of approx. 120
Ω
)
It produces potential difference.
Revision: 2013 February
2012 MURANO
LAN-8
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
DIAG ON CAN
DIAG ON CAN
Description
INFOID:0000000007544230
“Diag on CAN” is a diagnosis using CAN communication instead of previous DDL1 and DDL2 communication
lines, between control units and diagnosis unit.
System Diagram
INFOID:0000000007544231
SKIB8714E
Name
Harness
Description
DDL1
Tx
Rx
It is used for trouble diagnosis. (CAN-H and CAN-L are used for controlling)
DDL2
K-LINE
It is used for trouble diagnosis. (CAN-H and CAN-L are used for controlling)
Diag on CAN
CAN-H
CAN-L
It is used for trouble diagnosis and control.
Revision: 2013 February
2012 MURANO
LAN
TROUBLE DIAGNOSIS
LAN-9
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
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TROUBLE DIAGNOSIS
Condition of Error Detection
INFOID:0000000007544232
DTC (e.g. U1000 and U1001) of CAN communication is indicated on SELF-DIAG RESULTS on CONSULT if a
CAN communication signal is not transmitted or received between units for 2 seconds or more.
CAN COMMUNICATION SYSTEM ERROR
• CAN communication line open (CAN-H, CAN-L, or both).
• CAN communication line short (ground, between CAN communication lines, other harnesses).
• Error of CAN communication control circuit of the unit connected to CAN communication line.
WHEN DTC OF CAN COMMUNICATION IS INDICATED EVEN THOUGH CAN COMMUNICATION
SYSTEM IS NORMAL
• Removal/installation of parts: Error may be detected when removing and installing CAN communication unit
and related parts while turning the ignition switch ON. (A DTC except for CAN communication may be
detected.)
• Fuse blown out (removed): CAN communication of the unit may cease.
• Voltage drop: Error may be detected if voltage drops due to discharged battery when turning the ignition
switch ON (Depending on the control unit which carries out CAN communication).
• Error may be detected if the power supply circuit of the control unit, which carries out CAN communication,
malfunctions (Depending on the control unit which carries out CAN communication).
• Error may be detected if reprogramming is not completed normally.
CAUTION:
CAN communication system is normal if DTC of CAN communication is indicated on SELF-DIAG
RESULTS of CONSULT under the above conditions. Erase the memory of the self-diagnosis of each
unit.
Symptom When Error Occurs in CAN Communication System
INFOID:0000000007544233
In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit
and receive signals if any error occurs on CAN communication line. Under this condition, multiple control units
related to the root cause malfunction or go into fail-safe mode.
ERROR EXAMPLE
NOTE:
• Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line wiring.
• Refer to
for the unit abbreviation.
Example: TCM branch line open circuit
SKIB8738E
Unit name
Symptom
ECM
Engine torque limiting is affected, and shift harshness increases.
BCM
Reverse warning chime does not sound.
Revision: 2013 February
2012 MURANO
LAN-10
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
Example: Data link connector branch line open circuit
NOTE:
• When data link connector branch line is open, transmission and reception of CAN communication signals
are not affected. Therefore, no symptoms occur. However, be sure to repair malfunctioning circuit.
• The model (all units on CAN communication system are Diag on CAN) cannot perform CAN diagnosis with
CONSULT if the following error occurs. The error is judged by the symptom.
EPS control unit
Normal operation.
Combination meter
• Shift position indicator and OD OFF indicator turn OFF.
• Warning lamps turn ON.
ABS actuator and electric unit (control unit)
Normal operation.
TCM
No impact on operation.
IPDM E/R
Normal operation.
Unit name
Symptom
SKIB8739E
Unit name
Symptom
ECM
Normal operation.
BCM
EPS control unit
Combination meter
ABS actuator and electric unit (control unit)
TCM
IPDM E/R
Error
Difference of symptom
Data link connector branch line open circuit
Normal operation.
CAN-H, CAN-L harness short-circuit
Most of the units which are connected to the CAN communication
system enter fail-safe mode or are deactivated.
Revision: 2013 February
2012 MURANO
LAN
TROUBLE DIAGNOSIS
LAN-11
< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
C
D
E
F
G
H
I
J
K
L
B
A
O
P
N
Example: Main Line Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit) Open Circuit
Example: CAN-H, CAN-L Harness Short Circuit
SKIB8740E
Unit name
Symptom
ECM
Engine torque limiting is affected, and shift harshness increases.
BCM
• Reverse warning chime does not sound.
• The front wiper moves under continuous operation mode even though the front wip-
er switch being in the intermittent position.
EPS control unit
The steering effort increases.
Combination meter
• The shift position indicator and OD OFF indicator turn OFF.
• The speedometer is inoperative.
• The odo/trip meter stops.
ABS actuator and electric unit (control unit)
Normal operation.
TCM
No impact on operation.
IPDM E/R
When the ignition switch is ON,
• The headlamps (Lo) turn ON.
• The cooling fan continues to rotate.
SKIB8741E
Revision: 2013 February
2012 MURANO
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< SYSTEM DESCRIPTION >
[CAN FUNDAMENTAL]
TROUBLE DIAGNOSIS
CAN Diagnosis with CONSULT
INFOID:0000000007544234
CAN diagnosis on CONSULT extracts the root cause by receiving the following information.
• Response to the system call
• Control unit diagnosis information
• Self-diagnosis
• CAN diagnostic support monitor
Self-Diagnosis
INFOID:0000000007544235
If communication signals cannot be transmitted or received among units communicating via CAN communica-
tion line, CAN communication-related DTC is displayed on the CONSULT “Self Diagnostic Result” screen.
NOTE:
The following table shows examples of CAN communication-related DTC. For other DTC, refer to the applica-
ble sections.
CAN Diagnostic Support Monitor
INFOID:0000000007544236
MONITOR ITEM (CONSULT)
Unit name
Symptom
ECM
• Engine torque limiting is affected, and shift harshness increases.
• Engine speed drops.
BCM
• Reverse warning chime does not sound.
• The front wiper moves under continuous operation mode even though the front
wiper switch being in the intermittent position.
• The room lamp does not turn ON.
• The engine does not start (if an error or malfunction occurs while turning the igni-
tion switch OFF.)
• The steering lock does not release (if an error or malfunction occurs while turning
the ignition switch OFF.)
EPS control unit
The steering effort increases.
Combination meter
• The tachometer and the speedometer do not move.
• Warning lamps turn ON.
• Indicator lamps do not turn ON.
ABS actuator and electric unit (control unit)
Normal operation.
TCM
No impact on operation.
IPDM E/R
When the ignition switch is ON,
• The headlamps (Lo) turn ON.
• The cooling fan continues to rotate.
DTC
Self-diagnosis item
(CONSULT indication)
DTC detection condition
Inspection/Action
U1000
CAN COMM CIRCUIT
ECM
When ECM is not transmitting or receiving CAN
communication signal of OBD (emission-relat-
ed diagnosis) for 2 seconds or more.
Start the inspection. Re-
fer to the applicable sec-
tion of the indicated
control unit.
Except
for ECM
When a control unit (except for ECM) is not
transmitting or receiving CAN communication
signal for 2 seconds or more.
U1001
CAN COMM CIRCUIT
When ECM is not transmitting or receiving CAN communi-
cation signal other than OBD (emission-related diagnosis)
for 2 seconds or more.
U1002
SYSTEM COMM
When a control unit is not transmitting or receiving CAN
communication signal for 2 seconds or less.
U1010
CONTROL UNIT(CAN)
When an error is detected during the initial diagnosis for
CAN controller of each control unit.
Replace the control unit
indicating “U1010”.
Revision: 2013 February
2012 MURANO
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