Murano Cross Cabriolet Z51 (2012 year). Manual - part 54

LAN

HVAC BRANCH LINE CIRCUIT

LAN-45

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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HVAC BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000007566356

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 

HAC-62, "A/C AUTO AMP. :

Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the A/C auto amp. Refer to 

HAC-78, "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 CrossCabriolet

LAN-46

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

M&A BRANCH LINE CIRCUIT

M&A BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000007566357

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 

MWI-47, "COMBINATION

METER : Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the combination meter. Refer to 

MWI-70, "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 CrossCabriolet

LAN

A-BAG BRANCH LINE CIRCUIT

LAN-47

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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A-BAG BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000007566358

WARNING:

Always observe the following items for preventing accidental activation.
• 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

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Check the terminals and connectors of the air bag diagnosis sensor unit for damage, bend and loose con-
nection (unit side and connector side).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace the main harness.

2.

CHECK AIR BAG DIAGNOSIS SENSOR UNIT

Check the air bag diagnosis sensor unit. Refer to 

SRC-26, "Work Flow"

.

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 CrossCabriolet

LAN-48

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

BCM BRANCH LINE CIRCUIT

BCM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000007566359

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 BCM 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 BCM.

2.

Check the resistance between the BCM harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the BCM branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the BCM. Refer to 

BCS-69, "Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the BCM. Refer to 

BCS-76, "Removal and Installation"

.

YES (Past error)>>Error was detected in the BCM branch line.
NO

>> Repair the power supply and the ground circuit.

BCM harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M122

91

90

Approx. 54 – 66

Revision: 2013 February

2012 Murano CrossCabriolet

LAN

DLC BRANCH LINE CIRCUIT

LAN-49

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[CAN]

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DLC BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000007566360

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 data link connector for damage, bend and loose connection
(connector side and harness side).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

Is the measurement value within the specification?

YES (Present error)>>Diagnose again. Refer to 

LAN-15, "Trouble Diagnosis Flow Chart"

.

YES (Past error)>>Error was detected in the data link connector branch line circuit.
NO

>> Repair the data link connector branch line.

Data link connector

Resistance (

Ω

)

Connector No.

Terminal No.

M4

6

14

Approx. 54 – 66

Revision: 2013 February

2012 Murano CrossCabriolet

LAN-50

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

STRG BRANCH LINE CIRCUIT

STRG BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000007566361

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 steering angle sensor 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 steering angle sensor.

2.

Check the resistance between the steering angle sensor harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the steering angle sensor branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the steering angle sensor. Refer to 

BRC-25, "Wiring Dia-

gram"

.

Is the inspection result normal?

YES (Present error)>>Replace the steering angle sensor. Refer to 

BRC-105, "Removal and Installation"

.

YES (Past error)>>Error was detected in the steering angle sensor branch line.
NO

>> Repair the power supply and the ground circuit.

Steering angle sensor harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M30

5

2

Approx. 54 – 66

Revision: 2013 February

2012 Murano CrossCabriolet

LAN

ABS BRANCH LINE CIRCUIT

LAN-51

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[CAN]

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ABS BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000007566362

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 ABS actuator and electric unit (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 ABS actuator and electric unit (control unit).

2.

Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi-
nals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the ABS actuator and electric unit (control unit) branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to

BRC-43, "Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to 

BRC-102, "Removal

and Installation"

.

YES (Past error)>>Error was detected in the ABS actuator and electric unit (control unit) branch line.
NO

>> Repair the power supply and the ground circuit.

ABS actuator and electric unit (control unit) harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

E36

23

21

Approx. 54 – 66

Revision: 2013 February

2012 Murano CrossCabriolet

LAN-52

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

TCM BRANCH LINE CIRCUIT

TCM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000007566363

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).

-

TCM

-

Harness connector F123

-

Harness connector E6

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 TCM.

2.

Check the resistance between the TCM harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the TCM branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the TCM. Refer to 

TM-101, "Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the TCM. Refer to 

TM-141, "Removal and Installation"

.

YES (Past error)>>Error was detected in the TCM branch line.
NO

>> Repair the power supply and the ground circuit.

TCM harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

F23

32

31

Approx. 54 – 66

Revision: 2013 February

2012 Murano CrossCabriolet

LAN

IPDM-E BRANCH LINE CIRCUIT

LAN-53

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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IPDM-E BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000007566364

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 IPDM E/R 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 IPDM E/R.

2.

Check the resistance between the IPDM E/R harness connector terminals.

Is the measurement value within the specification?

YES

>> GO TO 3.

NO

>> Repair the IPDM E/R branch line.

3.

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the IPDM E/R. Refer to 

PCS-30, "Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the IPDM E/R. Refer to 

PCS-31, "Removal and Installation"

.

YES (Past error)>>Error was detected in the IPDM E/R branch line.
NO

>> Repair the power supply and the ground circuit.

IPDM E/R harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

E11

40

39

Approx. 108 – 132

Revision: 2013 February

2012 Murano CrossCabriolet

LAN-54

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

CAN COMMUNICATION CIRCUIT

CAN COMMUNICATION CIRCUIT

Diagnosis Procedure

INFOID:0000000007566365

1.

CONNECTOR INSPECTION

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect all the unit connectors on CAN communication system.

4.

Check terminals and connectors for damage, bend and loose connection.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair the terminal and connector.

2.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check the harness and repair the root cause.

3.

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector and the ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Check the harness and repair the root cause.

4.

CHECK ECM AND IPDM E/R TERMINATION CIRCUIT

1.

Remove the ECM and the IPDM E/R.

2.

Check the resistance between the ECM terminals.

3.

Check the resistance between the IPDM E/R terminals.

Is the measurement value within the specification?

YES

>> GO TO 5.

NO

>> Replace the ECM and/or the IPDM E/R.

5.

CHECK SYMPTOM

Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with
customer)” are reproduced. 

Data link connector

Continuity

Connector No.

Terminal No.

M4

6

14

Not existed

Data link connector

Ground

Continuity

Connector No.

Terminal No.

M4

6

Not existed

14

Not existed

ECM

Resistance (

Ω

)

Terminal No.

98

97

Approx. 108 – 132

IPDM E/R

Resistance (

Ω

)

Terminal No.

40

39

Approx. 108 – 132

Revision: 2013 February

2012 Murano CrossCabriolet

LAN

CAN COMMUNICATION CIRCUIT

LAN-55

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[CAN]

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Inspection result

Reproduced>>GO TO 6.
Non-reproduced>>Start the diagnosis again. Follow the trouble diagnosis procedure when past error is

detected.

6.

CHECK UNIT REPRODUCTION

Perform the reproduction test as per the following procedure for each unit.
1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect one of the control unit connectors of CAN communication system.
NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first.

4.

Connect the battery cable to the negative terminal. Check if the symptoms described in the “Symptom
(Results from interview with customer)” are reproduced. 
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms. 

Inspection result

Reproduced>>Connect the connector. Check other units as per the above procedure.
Non-reproduced>>Replace the unit whose connector was disconnected.

Revision: 2013 February

2012 Murano CrossCabriolet

LAN-56

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

MAIN LINE BETWEEN ADP AND C/ROOF CIRCUIT

DTC/CIRCUIT DIAGNOSIS

MAIN LINE BETWEEN ADP AND C/ROOF CIRCUIT

Diagnosis Procedure

INFOID:0000000007566366

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

-

Harness connectors B77 and B318

4.

Check the continuity between the harness connectors.

Is the inspection result normal?

YES (Present error)>>Connect all the connectors and diagnose again. Refer to 

LAN-15, "Trouble Diagnosis

Flow Chart"

.

YES (Past error)>>Error was detected in the main line between the driver seat control unit and the soft top

control unit. 

NO

>> Repair the main line between the harness connectors B19 and B77.

Harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

B19

2

B77

31

Existed

9

32

Existed

Revision: 2013 February

2012 Murano CrossCabriolet

LAN

MAIN LINE BETWEEN C/ROOF AND M&A CIRCUIT

LAN-57

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

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MAIN LINE BETWEEN C/ROOF AND M&A CIRCUIT

Diagnosis Procedure

INFOID:0000000007566367

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.

-

Harness connectors B318 and B77

-

Harness connectors B11 and M77

2.

Check the continuity between the harness connectors.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair the main line between the harness connectors B77 and 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)>>Connect all the connectors and diagnose again. Refer to 

LAN-15, "Trouble Diagnosis

Flow Chart"

.

YES (Past error)>>Error was detected in the main line between the soft top control unit and the combination

meter. 

NO

>> Repair the main line between the harness connector M77 and the combination meter.

Harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

B77

31

B11

57

Existed

32

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

Revision: 2013 February

2012 Murano CrossCabriolet

LAN-58

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

MAIN LINE BETWEEN M&A AND DLC CIRCUIT

Diagnosis Procedure

INFOID:0000000007566368

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)>>Connect all the connectors and diagnose again. Refer to 

LAN-15, "Trouble Diagnosis

Flow Chart"

.

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

Revision: 2013 February

2012 Murano CrossCabriolet

LAN

MAIN LINE BETWEEN DLC AND TCM CIRCUIT

LAN-59

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

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MAIN LINE BETWEEN DLC AND TCM CIRCUIT

Diagnosis Procedure

INFOID:0000000007566369

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)>>Connect all the connectors and diagnose again. Refer to 

LAN-15, "Trouble Diagnosis

Flow Chart"

.

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

Revision: 2013 February

2012 Murano CrossCabriolet

LAN-60

< DTC/CIRCUIT DIAGNOSIS >

[CAN SYSTEM (TYPE 1)]

ECM BRANCH LINE CIRCUIT

ECM BRANCH LINE CIRCUIT

Diagnosis Procedure

INFOID:0000000007566370

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).

-

ECM

-

Harness connector E104

-

Harness connector B4

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 

EC-146, "Diagnosis Procedure"

.

Is the inspection result normal?

YES (Present error)>>Replace the ECM. Refer to 

EC-445, "Removal and Installation"

.

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

Revision: 2013 February

2012 Murano CrossCabriolet