Nissan Murano Z51 (2012 year). Manual — part 40
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CAN COMMUNICATION SYSTEM
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DTC/CIRCUIT DIAGNOSIS
CAN COMMUNICATION SYSTEM
Component Parts Location
INFOID:0000000007544251
1.
ABS actuator and electric unit (con-
trol unit) E36
2.
AWD control unit M69
3.
TCM F23
4.
ECM E16
5.
IPDM E/R E11
6.
BCM M122
7.
Data link connector M4
8.
Combination meter M34
9.
Steering angle sensor M30
10. Driver seat control unit B452
11.
Automatic back door control unit B8
12. Air bag diagnosis sensor unit M73
13. A/C auto amp. M50
14. AV control unit
M174: Without navigation system
M180: With navigation system
JPMIA0844ZZ
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CAN COMMUNICATION SYSTEM
Wiring Diagram - CAN SYSTEM -
INFOID:0000000007544252
For connector terminal arrangements, harness layouts, and alphabets in a
(option abbreviation; if not
described in wiring diagram), refer to
GI-12, "Connector Information"
JCMWN0021GB
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CAN COMMUNICATION SYSTEM
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JCMWN0022GB
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[CAN]
MALFUNCTION AREA CHART
MALFUNCTION AREA CHART
Main Line
INFOID:0000000007544253
Branch Line
INFOID:0000000007544254
Short Circuit
INFOID:0000000007544255
Malfunction area
Reference
Main line between driver seat control unit and automatic back
door control unit
Main line between automatic back door control unit and combi-
nation meter
Main line between combination meter and data link connector
Main line between data link connector and TCM
Malfunction area
Reference
ECM branch line circuit
Driver seat control unit branch line circuit
Automatic back door control unit branch line circuit
AWD control unit branch line circuit
AV control unit branch line circuit
A/C auto amp. branch line circuit
Combination meter branch line circuit
Air bag diagnosis sensor unit branch line circuit
BCM branch line circuit
Data link connector branch line circuit
Steering angle sensor branch line circuit
ABS actuator and electric unit (control unit) branch line circuit
TCM branch line circuit
IPDM E/R branch line circuit
Malfunction area
Reference
CAN communication circuit
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MAIN LINE BETWEEN ADP AND PWBD CIRCUIT
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MAIN LINE BETWEEN ADP AND PWBD CIRCUIT
Diagnosis Procedure
INFOID:0000000007544256
1.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Disconnect the following harness connectors.
-
ECM
-
Harness connectors B460 and B19
-
Automatic back door control unit
4.
Check the continuity between the harness connector and the automatic back door control unit harness
connector.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the driver seat control unit and the automatic
back door control unit.
NO
>> Repair the main line between the harness connector B19 and the automatic back door control
unit.
Harness connector
Automatic back door control unit harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
B19
2
B8
6
Existed
9
7
Existed
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[CAN]
MAIN LINE BETWEEN PWBD AND M&A CIRCUIT
MAIN LINE BETWEEN PWBD AND M&A CIRCUIT
Diagnosis Procedure
INFOID:0000000007544257
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
-
Harness connector B11
-
Harness connector M77
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the following harness connectors.
-
Automatic back door control unit
-
Harness connectors B11 and M77
2.
Check the continuity between the automatic back door control unit harness connector and the harness
connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the main line between the automatic back door control unit and the harness connector
B11.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the connector of combination meter.
2.
Check the continuity between the harness connector and the combination meter harness connector.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the automatic back door control unit and the
combination meter.
NO
>> Repair the main line between the harness connector M77 and the combination meter.
Automatic back door control unit harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
B8
6
B11
57
Existed
7
56
Existed
Harness connector
Combination meter harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M77
57
M34
21
Existed
56
22
Existed
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MAIN LINE BETWEEN M&A AND DLC CIRCUIT
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MAIN LINE BETWEEN M&A AND DLC CIRCUIT
Diagnosis Procedure
INFOID:0000000007544258
1.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Disconnect the following harness connectors.
-
ECM
-
Combination meter
4.
Check the continuity between the combination meter harness connector and the data link connector.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the combination meter and the data link con-
nector.
NO
>> Repair the main line between the combination meter and the data link connector.
Combination meter harness connector
Data link connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M34
21
M4
6
Existed
22
14
Existed
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[CAN]
MAIN LINE BETWEEN DLC AND TCM CIRCUIT
MAIN LINE BETWEEN DLC AND TCM CIRCUIT
Diagnosis Procedure
INFOID:0000000007544259
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
-
Harness connector M11
-
Harness connector E105
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors M11 and E105.
2.
Check the continuity between the data link connector and the harness connector.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair the main line between the data link connector and the harness connector M11.
3.
CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1.
Disconnect the harness connectors E6 and F123.
2.
Check the continuity between the harness connectors.
Is the inspection result normal?
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the data link connector and the TCM.
NO
>> Repair the main line between the harness connectors E105 and E6.
Data link connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
M4
6
M11
12
Existed
14
11
Existed
Harness connector
Harness connector
Continuity
Connector No.
Terminal No.
Connector No.
Terminal No.
E105
12
E6
1
Existed
11
8
Existed
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ECM BRANCH LINE CIRCUIT
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ECM BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000007544260
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
-
Models with automatic back door system
•
ECM
•
Harness connector E104
•
Harness connector B4
-
Models without automatic back door system
•
ECM
•
Harness connector E105
•
Harness connector M11
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of ECM.
2.
Check the resistance between the ECM harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the ECM branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the ECM. Refer to
EC-17, "ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement"
YES (Past error)>>Error was detected in the ECM branch line.
NO
>> Repair the power supply and the ground circuit.
ECM harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
E16
98
97
Approx. 108 – 132
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[CAN]
ADP BRANCH LINE CIRCUIT
ADP BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000007544261
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
-
Driver seat control unit
-
Harness connector B460
-
Harness connector B19
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of driver seat control unit.
2.
Check the resistance between the driver seat control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the driver seat control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the driver seat control unit. Refer to
CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the driver seat control unit. Refer to
ADP-181, "Removal and Installation"
YES (Past error)>>Error was detected in the driver seat control unit branch line.
NO
>> Repair the power supply and the ground circuit.
Driver seat control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
B452
23
24
Approx. 54 – 66
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PWBD BRANCH LINE CIRCUIT
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PWBD BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000007544262
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the automatic back door control unit for damage, bend and loose
connection (unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of automatic back door control unit.
2.
Check the resistance between the automatic back door control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the automatic back door control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the automatic back door control unit. Refer to
"AUTOMATIC BACK DOOR CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the automatic back door control unit. Refer to
.
YES (Past error)>>Error was detected in the automatic back door control unit branch line.
NO
>> Repair the power supply and the ground circuit.
Automatic back door control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
B8
6
7
Approx. 54 – 66
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[CAN]
4WD BRANCH LINE CIRCUIT
4WD BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000007544263
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the AWD control unit for damage, bend and loose connection (unit
side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of AWD control unit.
2.
Check the resistance between the AWD control unit harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the AWD control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AWD control unit. Refer to
.
Is the inspection result normal?
YES (Present error)>>Replace the AWD control unit. Refer to
DLN-47, "Removal and Installation"
YES (Past error)>>Error was detected in the AWD control unit branch line.
NO
>> Repair the power supply and the ground circuit.
AWD control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M69
8
16
Approx. 54 – 66
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AV BRANCH LINE CIRCUIT
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AV BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000007544264
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the AV control unit for damage, bend and loose connection (unit
side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of AV control unit.
2.
Check the resistance between the AV control unit harness connector terminals.
-
Models with navigation system
-
Models without navigation system
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the AV control unit branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the AV control unit. Refer to the following.
• Base audio with color display:
AV-96, "AV CONTROL UNIT : Diagnosis Procedure"
• BOSE audio without navigation:
AV-214, "AV CONTROL UNIT : Diagnosis Procedure"
• BOSE audio with navigation:
AV-353, "AV CONTROL UNIT : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the AV control unit. Refer to the following.
• Base audio with color display:
AV-131, "Removal and Installation"
• BOSE audio without navigation:
AV-246, "Removal and Installation"
• BOSE audio with navigation:
AV-381, "Removal and Installation"
YES (Past error)>>Error was detected in the AV control unit branch line.
NO
>> Repair the power supply and the ground circuit.
AV control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M180
90
74
Approx. 54 – 66
AV control unit harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M174
81
80
Approx. 54 – 66
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[CAN]
HVAC BRANCH LINE CIRCUIT
HVAC BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000007544265
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit
side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of A/C auto amp.
2.
Check the resistance between the A/C auto amp. harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the A/C auto amp. branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the A/C auto amp. Refer to the following.
• Without 7 inch display:
HAC-77, "A/C AUTO AMP. : Diagnosis Procedure"
• With 7 inch display:
HAC-196, "A/C AUTO AMP. : Diagnosis Procedure"
Is the inspection result normal?
YES (Present error)>>Replace the A/C auto amp. Refer to the following.
• Without 7 inch display:
VTL-24, "Removal and Installation"
• With 7 inch display:
VTL-87, "Removal and Installation"
YES (Past error)>>Error was detected in the A/C auto amp. branch line.
NO
>> Repair the power supply and the ground circuit.
A/C auto amp. harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M50
1
2
Approx. 54 – 66
Revision: 2013 February
2012 MURANO
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M&A BRANCH LINE CIRCUIT
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M&A BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000007544266
1.
CHECK CONNECTOR
1.
Turn the ignition switch OFF.
2.
Disconnect the battery cable from the negative terminal.
3.
Check the terminals and connectors of the combination meter for damage, bend and loose connection
(unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair the terminal and connector.
2.
CHECK HARNESS FOR OPEN CIRCUIT
1.
Disconnect the connector of combination meter.
2.
Check the resistance between the combination meter harness connector terminals.
Is the measurement value within the specification?
YES
>> GO TO 3.
NO
>> Repair the combination meter branch line.
3.
CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the combination meter. Refer to
Is the inspection result normal?
YES (Present error)>>Replace the combination meter. Refer to
MWI-94, "Removal and Installation"
YES (Past error)>>Error was detected in the combination meter branch line.
NO
>> Repair the power supply and the ground circuit.
Combination meter harness connector
Resistance (
Ω
)
Connector No.
Terminal No.
M34
21
22
Approx. 54 – 66
Revision: 2013 February
2012 MURANO
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[CAN]
A-BAG BRANCH LINE CIRCUIT
A-BAG BRANCH LINE CIRCUIT
Diagnosis Procedure
INFOID:0000000007544267
WARNING:
• Before servicing, turn ignition switch OFF, disconnect battery negative terminal, and wait 3 minutes
or more. (To discharge backup capacitor.)
• Never use unspecified tester or other measuring device.
1.
CHECK CONNECTOR
Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose connec-
tion (unit side and connector side).
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Replace the terminal and connector.
2.
CHECK AIR BAG DIAGNOSIS SENSOR UNIT
Check the air bag diagnosis sensor unit. Refer to the following.
• For USA and CANADA:
• For MEXICO:
Is the inspection result normal?
YES
>> Replace the main harness.
NO
>> Replace parts whose air bag system has a malfunction.
Revision: 2013 February
2012 MURANO
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