Murano Cross Cabriolet Z51 (2012 year). Manual - part 63

MWI-42

< DTC/CIRCUIT DIAGNOSIS >

U1000 CAN COMM CIRCUIT

DTC/CIRCUIT DIAGNOSIS

U1000 CAN COMM CIRCUIT

Description

INFOID:0000000007565097

CAN (Controller Area Network) is a serial communication system for real time application. It is an on-vehicle
multiplex communication system with high data communication speed and excellent error detectability. Many
electronic control units are equipped onto vehicles, and each control unit shares information and links with
other control units during operation (not independent). In CAN communication, control units are connected
with two communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with
less wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart. Refer to 

LAN-28, "CAN COMMUNICATION SYSTEM : CAN Communica-

tion Signal Chart"

.

DTC Logic

INFOID:0000000007565098

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000007565099

1.

PERFORM SELF DIAGNOSTIC

1.

Turn ignition switch ON and wait for 2 seconds or more.

2.

Check “Self Diagnostic Result” of “METER/M&A”. 

Is “CAN COMM CIRCUIT” displayed?

YES

>> Refer to 

LAN-15, "Trouble Diagnosis Flow Chart"

.

NO

>> Refer to 

GI-40, "Intermittent Incident"

.

DTC

Display contents of 

CONSULT

Diagnostic item is detected when ...

Probable malfunction location

U1000

CAN COMM CIRCUIT

When combination meter is not transmitting or 
receiving CAN communication signal for 2 
seconds or more.

CAN communication system

Revision: 2013 February

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U1010 CONTROL UNIT (CAN)

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U1010 CONTROL UNIT (CAN)

Description

INFOID:0000000007565100

Initial diagnosis of combination meter.

DTC Logic

INFOID:0000000007565101

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000007565102

1.

REPLACE COMBINATION METER

When DTC “U1010” is detected, replace combination meter.

>> INSPECTION END

DTC

Display contents of CON-

SULT

Diagnostic item is detected when ...

Probable malfunction location

U1010

CONTROL UNIT (CAN)

If any malfunction is detected during initial di-
agnosis of combination meter CAN controller

Combination meter

Revision: 2013 February

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< DTC/CIRCUIT DIAGNOSIS >

B2205 VEHICLE SPEED

B2205 VEHICLE SPEED

Description

INFOID:0000000007565103

Vehicle speed signal is transmitted from ABS actuator and electric unit (control unit) via CAN communication
to combination meter.

DTC Logic

INFOID:0000000007565104

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000007565105

1.

PERFORM SELF-DIAGNOSIS OF ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)

Perform “Self Diagnostic Result” of ABS actuator and electric unit (control unit), and repair or replace malfunc-
tioning parts.

>> Refer to 

BRC-14, "CONSULT Function"

.

DTC

Display contents of 

CONSULT

Diagnostic item is detected when ...

Probable malfunction location

B2205

VEHICLE SPEED

An abnormal vehicle speed signal is input 
from ABS actuator and electric unit (control 
unit) for 2 seconds or more

• Wheel sensor
• ABS actuator and electric unit (control unit)

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B2267 ENGINE SPEED

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B2267 ENGINE SPEED

Description

INFOID:0000000007565106

The engine speed signal is transmitted from ECM to the combination meter via CAN communication.

DTC Logic

INFOID:0000000007565107

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000007565108

1.

PERFORM SELF-DIAGNOSIS OF ECM

Perform “Self Diagnostic Result” of ECM, and repair or replace malfunctioning parts.

>> Refer to 

EC-63, "CONSULT Function"

.

DTC

Display contents of 

CONSULT

Diagnostic item is detected when ...

Probable malfunction location

B2267

ENGINE SPEED

ECM continuously transmits abnormal engine 
speed signals for 2 seconds or more 

• Crankshaft position sensor (POS)
• ECM

Revision: 2013 February

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B2268 WATER TEMP

B2268 WATER TEMP

Description

INFOID:0000000007565109

The engine coolant temperature signal is transmitted from ECM to the combination meter via CAN communi-
cation.

DTC Logic

INFOID:0000000007565110

DTC DETECTION LOGIC

Diagnosis Procedure

INFOID:0000000007565111

1.

PERFORM SELF-DIAGNOSIS OF ECM

Perform “Self Diagnosis Result” of ECM, and repair or replace malfunctioning parts.

>> Refer to 

EC-63, "CONSULT Function"

.

DTC

Display contents of 

CONSULT

Diagnostic item is detected when ...

Probable malfunction location

B2268

WATER TEMP

ECM continuously transmits abnormal engine 
coolant temperature signals for 60 seconds or 
more 

• Engine coolant temperature sensor
• ECM

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POWER SUPPLY AND GROUND CIRCUIT

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POWER SUPPLY AND GROUND CIRCUIT

COMBINATION METER

COMBINATION METER : Diagnosis Procedure

INFOID:0000000007565112

1.

CHECK FUSE

Check for blown fuses.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Be sure to eliminate cause of malfunction before installing new fuse.

2.

CHECK POWER SUPPLY CIRCUIT

Check voltage between combination meter harness connector terminals and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Check harness between combination meter and fuse.

3.

CHECK GROUND CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector.

3.

Check continuity between combination meter harness connector terminals and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Power source

Fuse No.

Battery

11

Ignition switch ON or START 

4

Terminals

Ignition switch po-

sition

Voltage

(Approx.)

(+)

(-)

Combination meter

Ground

Connector

Terminal

M34

1

OFF

Battery voltage

2

ON

Terminals

Continuity

(+)

(-)

Combination meter

Ground

Connector

Terminal

M34

3

Existed

4

23

Revision: 2013 February

2012 Murano CrossCabriolet

MWI-48

< DTC/CIRCUIT DIAGNOSIS >

FUEL LEVEL SENSOR SIGNAL CIRCUIT

FUEL LEVEL SENSOR SIGNAL CIRCUIT

Description

INFOID:0000000007565113

The fuel level sensor unit and fuel pump (main) and the fuel level sensor unit (sub) detect the fuel level in the
fuel tank and transmit the fuel gauge signal to the combination meter.

Component Function Check

INFOID:0000000007565114

1.

PERFORM COMPONENT FUNCTION CHECK (1)

1.

Turn ignition switch OFF.

2.

Disconnect fuel level sensor unit and fuel pump (main) connector.

3.

Connect variable resistor between harness connector terminals located on the vehicle side of the fuel
level sensor unit and fuel pump (main). 

4.

Set variable resistor according to the resistance value shown in the following table and turn ignition switch
ON.

*: Reference resistance values used when the combination meter judges the indication position of the fuel
gauge.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Refer to 

MWI-48, "Diagnosis Procedure"

.

2.

PERFORM COMPONENT FUNCTION CHECK (2)

Check the fuel level sensor unit and fuel pump (main) and/or fuel level sensor (sub). Refer to 

MWI-49, "Com-

ponent Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the fuel level sensor unit and fuel pump (main) and/or fuel level sensor unit (sub). Refer

to 

FL-6, "Removal and Installation"

.

Diagnosis Procedure

INFOID:0000000007565115

1.

CHECK FUEL LEVEL SENSOR CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector and fuel level sensor unit and fuel pump (main) connector.

3.

Check continuity between combination meter harness connector terminal and fuel level sensor unit and
fuel pump (main) harness connector terminal.

Fuel level sensor unit and fuel pump (main)

Connector

Terminals

B40

2

5

Resistance (

Ω

)

*

(Approx.)

Fuel gauge indication position

(Approx.)

Less than 6.0

Full

22.8

3/4

44.6

2/4

65.6

1/4

More than 80.0

Empty

Revision: 2013 February

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FUEL LEVEL SENSOR SIGNAL CIRCUIT

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4.

Check continuity between combination meter harness connector terminal and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK FUEL LEVEL SENSOR GROUND CIRCUIT

Check continuity between fuel level sensor unit and fuel pump (main) harness connector terminal and combi-
nation meter harness connector terminal.

Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-70, "Removal and Installation"

.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000007565116

1.

CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP (MAIN)

1.

Remove the fuel level sensor unit and fuel pump (main). Refer to 

FL-6, "Removal and Installation"

. 

2.

Check the resistance between fuel level sensor unit and fuel pump (main).

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Replace fuel level sensor unit and fuel pump (main). Refer to 

FL-6, "Removal and Installation"

.

Terminals

Continuity

(+)

(-)

Combination meter

Fuel level sensor unit and fuel 

pump (main)

Connector

Terminal

Connector

Terminal

M34

34

B40

2

Existed

Terminals

Continuity

(+)

(-)

Combination meter

Ground

Connector

Terminal

M34

34

Not existed

Terminals

Continuity

(+)

(-)

Fuel level sensor unit and fuel 

pump (main)

Combination meter

Connector

Terminal

Connector

Terminal

B40

5

M34

24

Existed

Terminals

Condition

Resistance (

Ω

)

(Approx.)

Height [mm (in)]

(Approx.)

Fuel level sensor unit and 

fuel pump (main)

5

6

Full (A)

2.4

189.7 (7.47)

Empty (B)

79

16.8 (0.661)

2

7

—

0

—

JPNIA1323ZZ

Revision: 2013 February

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FUEL LEVEL SENSOR SIGNAL CIRCUIT

2.

CHECK FUEL LEVEL SENSOR UNIT (SUB)

1.

Remove the fuel level sensor unit (sub). Refer to 

FL-6, "Removal and Installation"

. 

2.

Inspect the resistance of fuel level sensor unit (sub).

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace fuel level sensor unit (sub). Refer to 

FL-6, "Removal and Installation"

.

Terminals

Condition

Resistance (

Ω

)

(Approx.)

Height [mm (in)]

(Approx.)

Fuel level sensor unit (sub)

(+)

(-)

6

7

Full (A)

2.4

200.3 (7.89)

Empty (B)

45.2

22.6 (0.890)

JPNIA0738ZZ

Revision: 2013 February

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METER CONTROL SWITCH SIGNAL CIRCUIT

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METER CONTROL SWITCH SIGNAL CIRCUIT

Description

INFOID:0000000007565117

Transmits the following signals to the combination meter.

Diagnosis Procedure

INFOID:0000000007565118

1.

CHECK METER CONTROL SWITCH INPUT SIGNAL

1.

Turn the ignition switch ON.

2.

Check voltage between the following terminals of the combination meter.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK METER CONTROL SWITCH SIGNAL CIRCUIT

1.

Turn the ignition switch OFF.

2.

Disconnect the combination meter and meter control switch connectors.

3.

Check continuity between combination meter harness connector terminals and meter control switch har-
ness connector terminals.

•

 (Illumination control) switch signal (+)

•

 (Illumination control) switch signal (–)

• Trip reset switch signal

•

 (select) switch signal

•

 (enter) switch is pressed

Terminals

Condition

Voltage

(Approx.)

Combination meter

(+)

(-)

Connector

Terminal

Connector

Terminal

M34

12

M34

10

When 

 (select) switch is pressed

0 V

Other than the above

5 V

11

When 

 (enter) switch is pressed

0 V

Other than the above

5 V

8

When trip reset switch is pressed

0 V

Other than the above

5 V

14

When 

 (illumination control) switch is pressed

0 V

Other than the above

5 V

13

When 

 (illumination control) switch is pressed

0 V

Other than the above

5 V

Revision: 2013 February

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METER CONTROL SWITCH SIGNAL CIRCUIT

4.

Check continuity between combination meter harness connector terminals and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000007565119

1.

CHECK METER CONTROL SWITCH

1.

Turn the ignition switch OFF.

2.

Disconnect the meter control switch connector.

3.

Check continuity between the following terminals of the meter control switch.

Is the inspection result normal?

YES

>> INSPECTION END

Terminals

Continuity

Combination meter

Meter control switch

(+)

(-)

Connector

Terminal

Connector

Terminal

M34

8

M83

11

Existed

10

5

11

12

12

1

13

6

14

4

Terminals

Continuity

(+)

(-)

Combination meter

Ground

Connector

Terminal

M34

8

Not existed

10

11

12

13

14

Terminal No.

Operation and status

Continuity

1

5

Press the 

 (select) switch

Existed

Other than the above

Not existed

12

5

Press the 

 (enter) switch

Existed

Other than the above

Not existed

11

5

Press the trip reset switch.

Existed

Other than the above

Not existed

4

5

Press the 

 (illumination control) switch

Existed

Other than the above

Not existed

6

5

Press the 

 (illumination control) switch

Existed

Other than the above

Not existed

Revision: 2013 February

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METER CONTROL SWITCH SIGNAL CIRCUIT

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NO

>> Replace the meter control switch. Refer to 

MWI-72, "Removal and Installation"

.

Revision: 2013 February

2012 Murano CrossCabriolet

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< DTC/CIRCUIT DIAGNOSIS >

OIL PRESSURE SWITCH SIGNAL CIRCUIT

OIL PRESSURE SWITCH  SIGNAL CIRCUIT

Description

INFOID:0000000007565120

Detects the engine oil pressure and transmits the oil pressure switch signal to IPDM E/R.

Component Function Check

INFOID:0000000007565121

1.

CHECK COMBINATION METER INPUT SIGNAL

Select the “Data Monitor” for the “METER/M&A” and check the “OIL W/L” monitor value.

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000007565122

1.

CHECK OIL PRESSURE SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector and oil pressure switch connector.

3.

Check continuity between IPDM E/R harness connector terminal and oil pressure switch harness connec-
tor terminal.

4.

Check continuity between IPDM E/R harness connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000007565123

1.

CHECK OIL PRESSURE SWITCH

“OIL W/L”

Ignition switch ON

: On

Engine running

: Off

Terminals

Continuity

(+)

(

−

)

IPDM E/R

Oil pressure switch

Connector

Terminal

Connector

Terminal

F12

75

F63

1

Existed

Terminals

Continuity

(+)

(

−

)

IPDM E/R

Ground

Connector

Terminal

F12

75

Not existed

Revision: 2013 February

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OIL PRESSURE SWITCH SIGNAL CIRCUIT

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Check continuity between oil pressure switch and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace oil pressure switch. Refer to 

EM-38, "Removal and Installation"

.

Condition

Continuity

Engine stopped

Existed

Engine running

Not existed

ELF0044D

Revision: 2013 February

2012 Murano CrossCabriolet

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PARKING BRAKE SWITCH SIGNAL CIRCUIT

PARKING BRAKE SWITCH SIGNAL CIRCUIT

Description

INFOID:0000000007565124

Transmits the parking brake switch signal to the combination meter.

Diagnosis Procedure

INFOID:0000000007565125

1.

CHECK COMBINATION METER INPUT SIGNAL

1.

Turn ignition switch ON.

2.

Check the voltage between combination meter harness connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> GO TO 2.

2.

CHECK PARKING BRAKE SWITCH SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector and parking brake switch connector. 

3.

Check continuity between combination meter harness connector terminal and parking brake switch har-
ness connector terminal.

4.

Check continuity between combination meter harness connector terminal and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000007565126

1.

CHECK PARKING BRAKE SWITCH

Check parking brake switch. Refer to 

BRC-83, "Component Inspection"

.

Is the inspection result normal? 

YES

>> INSPECTION END

NO

>> Replace parking brake switch. Refer to 

PB-6, "Exploded View"

.

Terminals

Condition

Voltage

(Approx.)

(+)

(-)

Combination meter

Ground

Connector

Terminal

M34

26

When parking brake is applied

0 V

When parking brake is released

5 V

Terminals

Continuity

(+)

(-)

Combination meter

Parking brake switch

Connector

Terminal

Connector

Terminal

M34

26

E27

1

Existed

Terminals

Continuity

(+)

(-)

Combination meter

Ground

Connector

Terminal

M34

26

Not existed

Revision: 2013 February

2012 Murano CrossCabriolet

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WASHER LEVEL SWITCH SIGNAL CIRCUIT

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WASHER LEVEL SWITCH SIGNAL CIRCUIT

Description

INFOID:0000000007565127

Transmits the washer level switch signal to the combination meter.

Diagnosis Procedure

INFOID:0000000007565128

1.

CHECK WASHER LEVEL SWITCH SIGNAL CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector and washer level switch connector.

3.

Check continuity between combination meter harness connector terminal and washer level switch har-
ness connector terminal.

4.

Check continuity between combination meter harness connector terminal and ground.

Is the inspection result normal? 

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK WASHER LEVEL SWITCH GROUND CIRCUIT

Check continuity between washer level switch connector and ground.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000007565129

1.

CHECK WASHER LEVEL SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect washer level switch connector. 

3.

Check washer level switch.

Terminals

Continuity

Combination meter

Washer level switch

(+)

(-)

Connector

Terminal

Connector

Terminal

M34

29

E338

1

Existed

Terminals

Continuity

(+)

(-)

Combination meter

Ground

Connector

Terminal

M34

29

Not existed

Terminals

Continuity

Washer level switch

Ground

Connector

Terminal

E338

2

Existed

Revision: 2013 February

2012 Murano CrossCabriolet