Nissan Murano Z50 (2007 year). Manual - part 130

TROUBLE DIAGNOSIS

LAN-77

[CAN]

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LAN

Revision: 2006 July

2007 Murano

Main Line Between BCM and Data Link Connector

NKS004LH

INSPECTION PROCEDURE

1. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Turn the ignition switch OFF.

2.

Disconnect the battery cable from the negative terminal.

3.

Disconnect ECM connector and BCM connector.

4.

Check the continuity between the BCM harness connector and the data link connector.

OK or NG

OK

>>

●

Present error: Check the following items again.

–

Decision of CAN system type.

–

Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).

–

Not copied from on-board diagnosis.

–

Procedure for detecting root cause.

●

Past error: Error was detected in the main line between the BCM and the data link connector.

NG

>> Repair the main line between the BCM and the data link connector.

Main Line Between Data Link Connector and ABS Actuator and Electric Unit 
(Control Unit)

NKS004M2

INSPECTION PROCEDURE

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 M9

–

Harness connector B2

–

Harness connector B4

–

Harness connector E105

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

2. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the harness connectors M9 and B2.

2.

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

OK or NG

OK

>> GO TO 3.

NG

>> Repair the main line between the data link connector and the harness connector M9.

BCM harness connector

Data link connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M34

39

M24

6

Yes

40

14

Yes

Data link connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M24

6

M9

1

Yes

14

13

Yes

LAN-78

[CAN]

TROUBLE DIAGNOSIS

Revision: 2006 July

2007 Murano

3. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the harness connectors B4 and E105.

2.

Check the continuity between harness connectors.

OK or NG

OK

>> GO TO 4.

NG

>> Repair the main line between the harness connector B2 and the harness connector B4.

4. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the connector of ABS actuator and electric unit (control unit).

2.

Check the continuity between the harness connector and the ABS actuator and electric unit (control unit)
harness connector.

OK or NG

OK

>>

●

Present error: Check the following items again.

–

Decision of CAN system type.

–

Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).

–

Not copied from on-board diagnosis.

–

Procedure for detecting root cause.

●

Past error: Error was detected in the main line between the data link connector and the ABS
actuator and electric unit (control unit).

NG

>> Repair the main line between the harness connector E105 and the ABS actuator and electric unit

(control unit).

Main Line Between Data Link Connector and AWD Control Unit

NKS004M3

INSPECTION PROCEDURE

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 M9

–

Harness connector B2

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

Harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

B2

1

B4

4

Yes

13

10

Yes

Harness connector

ABS actuator and electric unit (control unit)

harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E105

4

E24

11

Yes

10

15

Yes

TROUBLE DIAGNOSIS

LAN-79

[CAN]

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LAN

Revision: 2006 July

2007 Murano

2. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the harness connectors M9 and B2.

2.

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

OK or NG

OK

>> GO TO 3.

NG

>> Repair the main line between the data link connector and the harness connector M9.

3. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the harness connectors B4 and E105.

2.

Check the continuity between harness connectors.

OK or NG

OK

>> GO TO 4.

NG

>> Repair the main line between the harness connector B2 and the harness connector B4.

4. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the connector of AWD control unit.

2.

Check the continuity between the harness connector and the AWD control unit harness connector.

OK or NG

OK

>>

●

Present error: Check the following items again.

–

Decision of CAN system type.

–

Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).

–

Not copied from on-board diagnosis.

–

Procedure for detecting root cause.

●

Past error: Error was detected in the main line between the data link connector and the AWD
control unit.

NG

>> Repair the main line between the harness connector E105 and the AWD control unit.

Data link connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M24

6

M9

1

Yes

14

13

Yes

Harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

B2

1

B4

4

Yes

13

10

Yes

Harness connector

AWD control unit harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E105

4

E111

8

Yes

10

16

Yes

LAN-80

[CAN]

TROUBLE DIAGNOSIS

Revision: 2006 July

2007 Murano

Main Line Between Data Link Connector and Driver Seat Control Unit

NKS004LI

INSPECTION PROCEDURE

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 M9

–

Harness connector B2

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

2. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the harness connectors M9 and B2.

2.

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

OK or NG

OK

>> GO TO 3.

NG

>> Repair the main line between the data link connector and the harness connector M9.

3. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the harness connectors B4 and E105.

2.

Check the continuity between harness connectors.

OK or NG

OK

>>

●

Present error: Check the following items again.

–

Decision of CAN system type.

–

Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).

–

Not copied from on-board diagnosis.

–

Procedure for detecting root cause.

●

Past error: Error was detected in the main line between the data link connector and the driver
seat control unit.

NG

>> Repair the main line between the harness connector B2 and the driver seat control unit.

Data link connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

M24

6

M9

1

Yes

14

13

Yes

Harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

B2

1

B4

4

Yes

13

10

Yes

TROUBLE DIAGNOSIS

LAN-81

[CAN]

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LAN

Revision: 2006 July

2007 Murano

Main Line Between Driver Seat Control Unit and ABS Actuator and Electric Unit 
(Control Unit)

NKS004M4

INSPECTION PROCEDURE

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 B4

–

Harness connector E105

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

2. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the following harness connectors.

–

Harness connector M9 and B2

–

Harness connector B4 and E105

2.

Check the continuity between harness connectors.

OK or NG

OK

>> GO TO 3.

NG

>> Repair the main line between the harness connector B2 and the harness connector B4.

3. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the connector of ABS actuator and electric unit (control unit).

2.

Check the continuity between the harness connector and the ABS actuator and electric unit (control unit)
harness connector.

OK or NG

OK

>>

●

Present error: Check the following items again.

–

Decision of CAN system type.

–

Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).

–

Not copied from on-board diagnosis.

–

Procedure for detecting root cause.

●

Past error: Error was detected in the main line between the driver seat control unit and the ABS
actuator and electric unit (control unit).

NG

>> Repair the main line between the harness connector E105 and the ABS actuator and electric unit

(control unit).

Harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

B2

1

B4

4

Yes

13

10

Yes

Harness connector

ABS actuator and electric unit (control unit)

harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E105

4

E24

11

Yes

10

15

Yes

LAN-82

[CAN]

TROUBLE DIAGNOSIS

Revision: 2006 July

2007 Murano

Main Line Between Driver Seat Control Unit and AWD Control Unit

NKS004LJ

INSPECTION PROCEDURE

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 B4

–

Harness connector E105

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

2. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the following harness connectors.

–

Harness connector M9 and B2

–

Harness connector B4 and E105

2.

Check the continuity between harness connectors.

OK or NG

OK

>> GO TO 3.

NG

>> Repair the main line between the harness connector B2 and the harness connector B4.

3. 

CHECK HARNESS CONTINUITY (OPEN CIRCUIT)

1.

Disconnect the connector of AWD control unit.

2.

Check the continuity between the harness connector and the AWD control unit harness connector.

OK or NG

OK

>>

●

Present error: Check the following items again.

–

Decision of CAN system type.

–

Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).

–

Not copied from on-board diagnosis.

–

Procedure for detecting root cause.

●

Past error: Error was detected in the main line between the driver seat control unit and the
AWD control unit.

NG

>> Repair the main line between the harness connector E105 and the AWD control unit.

Harness connector

Harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

B2

1

B4

4

Yes

13

10

Yes

Harness connector

AWD control unit harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E105

4

E111

8

Yes

10

16

Yes

TROUBLE DIAGNOSIS

LAN-83

[CAN]

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LAN

Revision: 2006 July

2007 Murano

Main Line Between AWD Control Unit and ABS Actuator and Electric Unit (Con-
trol Unit)

NKS004LK

INSPECTION PROCEDURE

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 connector

–

AWD control unit connector

–

ABS actuator and electric unit (control unit) connector

4.

Check the continuity between the AWD control unit harness connector and the ABS actuator and electric
unit (control unit) harness connector.

OK or NG

OK

>>

●

Present error: Check the following items again.

–

Decision of CAN system type.

–

Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).

–

Not copied from on-board diagnosis.

–

Procedure for detecting root cause.

●

Past error: Error was detected in the main line between the AWD control unit and the ABS actu-
ator and electric unit (control unit).

NG

>> Repair the main line between the AWD control unit and the ABS actuator and electric unit (control

unit).

ECM Branch Line Circuit

NKS004LL

INSPECTION PROCEDURE

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 ECM for damage, bend and loose connection (unit side and
connector side).

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

AWD control unit harness connector

ABS actuator and electric unit (control unit)

harness connector

Continuity

Connector No.

Terminal No.

Connector No.

Terminal No.

E111

8

E24

11

Yes

16

15

Yes

LAN-84

[CAN]

TROUBLE DIAGNOSIS

Revision: 2006 July

2007 Murano

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect the connector of ECM.

2.

Check the resistance between the ECM harness connector terminals.

OK or NG

OK

>> GO TO 3.

NG

>> 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-142, "POWER SUPPLY AND

GROUND CIRCUIT"

 .

OK or NG

OK

>>

●

Present error: Replace the ECM. Refer to 

EC-75, "Procedure After Replacing ECM"

 .

●

Past error: Error was detected in the ECM branch line.

NG

>> Repair the power supply and the ground circuit.

BCM Branch Line Circuit

NKS004LM

INSPECTION PROCEDURE

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).

OK or NG

OK

>> GO TO 2.

NG

>> 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.

OK or NG

OK

>> GO TO 3.

NG

>> 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-10, "Schematic"

 .

OK or NG

OK

>>

●

Present error: Replace the BCM. Refer to 

BCS-14, "Removal and Installation of BCM"

 . 

●

Past error: Error was detected in the BCM branch line.

NG

>> Repair the power supply and the ground circuit.

ECM harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M80

94

86

Approx. 108 – 132

BCM harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M34

39

40

Approx. 54 – 66

TROUBLE DIAGNOSIS

LAN-85

[CAN]

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Revision: 2006 July

2007 Murano

Intelligent Key Unit Branch Line Circuit

NKS004M5

INSPECTION PROCEDURE

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 Intelligent Key unit for damage, bend and loose connection
(unit side and connector side).

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect the connector of Intelligent Key unit.

2.

Check the resistance between the Intelligent Key unit harness connector terminals.

OK or NG

OK

>> GO TO 3.

NG

>> Repair the Intelligent Key unit branch line.

3. 

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the Intelligent Key unit. Refer to 

BL-134, "Check Power Sup-

ply and Ground Circuit"

 .

OK or NG

OK

>>

●

Present error: Replace the Intelligent Key unit. Refer to 

BL-167, "Removal and Installation of

Intelligent Key Unit"

 . 

●

Past error: Error was detected in the Intelligent Key unit branch line.

NG

>> Repair the power supply and the ground circuit.

TCM Branch Line Circuit

NKS004LN

INSPECTION PROCEDURE

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 connector

–

Harness connector F102

–

Harness connector M82

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

Intelligent Key unit harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M99

2

3

Approx. 54 – 66

LAN-86

[CAN]

TROUBLE DIAGNOSIS

Revision: 2006 July

2007 Murano

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect the connector of TCM.

2.

Check the resistance between the TCM harness connector terminals.

OK or NG

OK

>> GO TO 3.

NG

>> 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 

CVT-149, "DTC P1701 TRANSMISSION

CONTROL MODULE (POWER SUPPLY)"

 .

OK or NG

OK

>>

●

Present error: Replace the TCM. Refer to 

CVT-39, "CVT Electrical Parts Location (With Manual

Mode)"

  or 

CVT-40, "CVT Electrical Parts Location (Without Manual Mode)"

 .

●

Past error: Error was detected in the TCM branch line.

NG

>> Repair the power supply and the ground circuit.

Display Control Unit Branch Line Circuit

NKS004LO

INSPECTION PROCEDURE

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 display control unit for damage, bend and loose connection
(unit side and connector side).

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect the connector of display control unit.

2.

Check the resistance between the display control unit harness connector terminals.

OK or NG

OK

>> GO TO 3.

NG

>> Repair the display control unit branch line.

TCM harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

F103

5

6

Approx. 54 – 66

Display control unit harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M43

25

26

Approx. 54 – 66

TROUBLE DIAGNOSIS

LAN-87

[CAN]

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LAN

Revision: 2006 July

2007 Murano

3. 

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the display control unit. Refer to 

AV-72, "Schematic — INF/D

—"

  (Models with integrated display system) or 

AV-131, "Schematic — NAVI —"

  (Models with navigation sys-

tem).
OK or NG

OK

>>

●

Present error: Replace the display control unit. Refer to 

AV-122, "Removal and Installation of

Display Control Unit"

  (Models with integrated display system) or 

AV-201, "Removal and Instal-

lation of Display Control Unit"

  (Models with navigation system).

●

Past error: Error was detected in the display control unit branch line.

NG

>> Repair the power supply and the ground circuit.

Data Link Connector Branch Line Circuit

NKS004LP

INSPECTION PROCEDURE

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).

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

2. 

CHECK HARNESS FOR OPEN CIRCUIT

Check the resistance between the data link connector terminals.

OK or NG

OK

>>

●

Present error: Check the following items again.

–

Decision of CAN system type.

–

Not received CONSULT-II data (SELECT SYSTEM, SELF-DIAG RESULTS, CAN DIAG SUP-
PORT MNTR).

–

Not copied from on-board diagnosis.

–

Procedure for detecting root cause.

●

Past error: Error was detected in the data link connector branch line circuit.

NG

>> Repair the data link connector branch line.

Unified Meter and A/C Amp. Branch Line Circuit

NKS004LQ

INSPECTION PROCEDURE

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 unified meter and A/C amp. for damage, bend and loose con-
nection (unit side and connector side).

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

Data link connector

Resistance (

Ω

)

Connector No.

Terminal No.

M24

6

14

Approx. 54 – 66

LAN-88

[CAN]

TROUBLE DIAGNOSIS

Revision: 2006 July

2007 Murano

2. 

CHECK HARNESS FOR OPEN CIRCUIT

1.

Disconnect the connector of unified meter and A/C amp.

2.

Check the resistance between the unified meter and A/C amp. harness connector terminals.

OK or NG

OK

>> GO TO 3.

NG

>> Repair the unified meter and A/C amp. branch line.

3. 

CHECK POWER SUPPLY AND GROUND CIRCUIT

Check the power supply and the ground circuit of the unified meter and A/C amp. Refer to 

DI-32, "Power Sup-

ply and Ground Circuit Inspection"

 .

OK or NG

OK

>>

●

Present error: Replace the unified meter and A/C amp. Refer to 

DI-36, "Removal and Installa-

tion of Unified Meter and A/C Amp."

 .

●

Past error: Error was detected in the unified meter and A/C amp. branch line.

NG

>> Repair the power supply and the ground circuit.

Steering Angle Sensor Branch Line Circuit

NKS004LR

INSPECTION PROCEDURE

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).

OK or NG

OK

>> GO TO 2.

NG

>> 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.

OK or NG

OK

>> GO TO 3.

NG

>> 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-55, "Schematic"

 .

OK or NG

OK

>>

●

Present error: Replace the steering angle sensor. Refer to 

BRC-102, "STEERING ANGLE

SENSOR"

 .

●

Past error: Error was detected in the steering angle sensor branch line.

NG

>> Repair the power supply and the ground circuit.

Unified meter and A/C amp. harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M49

1

11

Approx. 54 – 66

Steering angle sensor harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

M33

4

5

Approx. 54 – 66

TROUBLE DIAGNOSIS

LAN-89

[CAN]

C

D

E

F

G

H

I

J

L

M

A

B

LAN

Revision: 2006 July

2007 Murano

Driver Seat Control Unit Branch Line Circuit

NKS004LS

INSPECTION PROCEDURE

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 connector

–

Harness connector B301

–

Harness connector B9

OK or NG

OK

>> GO TO 2.

NG

>> 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.

OK or NG

OK

>> GO TO 3.

NG

>> 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 

SE-40, "CHECK

POWER SUPPLY AND GROUND CIRCUIT"

 .

OK or NG

OK

>>

●

Present error: Replace the driver seat control unit. Refer to 

SE-17, "Component Parts And Har-

ness Connector Location"

 . 

●

Past error: Error was detected in the driver seat control unit branch line.

NG

>> Repair the power supply and the ground circuit.

AWD Control Unit Branch Line Circuit

NKS004LT

INSPECTION PROCEDURE

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).

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

Driver seat control unit harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

B303

3

19

Approx. 54 – 66

LAN-90

[CAN]

TROUBLE DIAGNOSIS

Revision: 2006 July

2007 Murano

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.

OK or NG

OK

>> GO TO 3.

NG

>> 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 

TF-28, "Power Supply Circuit

for AWD Control Unit"

 .

OK or NG

OK

>>

●

Present error: Replace the AWD control unit. Refer to 

TF-49, "AWD CONTROL UNIT"

 .

●

Past error: Error was detected in the AWD control unit branch line.

NG

>> Repair the power supply and the ground circuit.

ABS Actuator and Electric Unit (Control Unit) Branch Line Circuit

NKS004LU

INSPECTION PROCEDURE

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).

OK or NG

OK

>> GO TO 2.

NG

>> 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.

OK or NG

OK

>> GO TO 3.

NG

>> 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-33, "ABS Actuator and Electric Unit (Control Unit) Power Supply and Ground Circuit"

  (Models with ABS)

AWD control unit harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

E111

8

16

Approx. 54 – 66

ABS actuator and electric unit (control unit) harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

E24

11

15

Approx. 54 – 66

TROUBLE DIAGNOSIS

LAN-91

[CAN]

C

D

E

F

G

H

I

J

L

M

A

B

LAN

Revision: 2006 July

2007 Murano

or 

BRC-85, "ABS Actuator and Electric Unit (Control Unit) Power Supply and Ground Circuit"

  (Models with

VDC).

OK or NG

OK

>>

●

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

BRC-42,

"ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)"

  (Models with ABS) or 

BRC-99, "ACTUA-

TOR AND ELECTRIC UNIT (ASSEMBLY)"

  (Models with VDC). 

●

Past error: Error was detected in the ABS actuator and electric unit (control unit) branch line.

NG

>> Repair the power supply and the ground circuit.

IPDM E/R Branch Line Circuit

NKS004LV

INSPECTION PROCEDURE

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).

OK or NG

OK

>> GO TO 2.

NG

>> 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.

OK or NG

OK

>> GO TO 3.

NG

>> 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 

PG-26, "IPDM E/R Power/Ground

Circuit Inspection"

 .

OK or NG

OK

>>

●

Present error: Replace the IPDM E/R. Refer to 

PG-28, "Removal and Installation of IPDM E/R"

.

●

Past error: Error was detected in the IPDM E/R branch line.

NG

>> Repair the power supply and the ground circuit.

CAN Communication Circuit

NKS004LW

INSPECTION PROCEDURE

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.

OK or NG

OK

>> GO TO 2.

NG

>> Repair the terminal and connector.

IPDM E/R harness connector

Resistance (

Ω

)

Connector No.

Terminal No.

E9

48

49

Approx. 108 – 132

LAN-92

[CAN]

TROUBLE DIAGNOSIS

Revision: 2006 July

2007 Murano

2. 

CHECK HARNESS CONTINUITY (SHORT CIRCUIT)

Check the continuity between the data link connector terminals.

OK or NG

OK

>> GO TO 3.

NG

>> 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.

OK or NG

OK

>> GO TO 4.

NG

>> 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.

OK or NG

OK

>> GO TO 5.

NG

>> 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. 
Inspection result

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

detected.

Data link connector

Continuity

Connector No.

Terminal No.

M24

6

14

No

Data link connector

Ground

Continuity

Connector No.

Terminal No.

M24

6

No

14

No

ECM

Resistance (

Ω

)

Terminal No.

94

86

Approx. 108 – 132

IPDM E/R

Resistance (

Ω

)

Terminal No.

48

49

Approx. 108 – 132

LKIA0037E