Nissan Murano Z51 (2012 year). Manual - part 39

LAN

TROUBLE DIAGNOSIS

LAN-13

< SYSTEM DESCRIPTION >

[CAN FUNDAMENTAL]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Example: CAN DIAG SUPPORT MNTR indication

Without PAST

With PAST

MONITOR ITEM (ON-BOARD DIAGNOSIS)

NOTE:
For some models, CAN communication diagnosis result is received from the vehicle monitor.

JSMIA0015GB

Item

PRSNT

Description

Initial diagnosis

OK

Normal at present

NG

Control unit error (Except for some control units)

Transmission diagnosis

OK

Normal at present

UNKWN

Unable to transmit signals for 2 seconds or more.

Diagnosis not performed

Control unit name

(Reception diagnosis)

OK

Normal at present

UNKWN

Unable to receive signals for 2 seconds or more.

Diagnosis not performed

No control unit for receiving signals. (No applicable optional parts)

Item

PRSNT

PAST

Description

Transmission diagnosis

OK

OK

Normal at present and in the past

1 – 39

Normal at present, but unable to transmit signals for 2 seconds or more 
in the past. (The number indicates the number of ignition switch cycles 
from OFF to ON.)

UNKWN

0

Unable to transmit signals for 2 seconds or more at present.

Control unit name

(Reception diagnosis)

OK

OK

Normal at present and in the past

1 – 39

Normal at present, but unable to receive signals for 2 seconds or more 
in the past. (The number indicates the number of ignition switch cycles 
from OFF to ON.)

UNKWN

0

Unable to receive signals for 2 seconds or more at present.

–

–

Diagnosis not performed.

No control unit for receiving signals. (No applicable optional parts)

Revision: 2013 February

2012 MURANO

LAN-14

< SYSTEM DESCRIPTION >

[CAN FUNDAMENTAL]

TROUBLE DIAGNOSIS

Example: Vehicle Display 

How to Use CAN Communication Signal Chart

INFOID:0000000007544237

The CAN communication signal chart lists the signals needed for trouble diagnosis. It is useful for detecting
the root cause by finding a signal related to the symptom, and by checking transmission and reception unit.

Item

Result indi-

cated

Error counter

Description

CAN_COMM

(Initial diagnosis)

OK

0

Normal at present

NG

1 – 50

Control unit error
(The number indicates how many times diagnosis has been 
run.)

CAN_CIRC_1

(Transmission diagnosis)

OK

0

Normal at present

UNKWN

1 – 50

Unable to transmit for 2 seconds or more at present.
(The number indicates how many times diagnosis has been 
run.)

CAN_CIRC_2 – 9

(Reception diagnosis of each unit)

OK

0

Normal at present

UNKWN

1 – 50

Unable to transmit for 2 seconds or more at present.
(The number indicates how many times diagnosis has been 
run.)

Diagnosis not performed.

No control unit for receiving signals. (No applicable optional 
parts)

SKIB8715E

Revision: 2013 February

2012 MURANO

LAN

DIAGNOSIS AND REPAIR WORKFLOW

LAN-15

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Trouble Diagnosis Flow Chart

INFOID:0000000007544238

Trouble Diagnosis Procedure

INFOID:0000000007544239

INTERVIEW WITH CUSTOMER

Interview with the customer is important to detect the root cause of CAN communication system errors and to
understand vehicle condition and symptoms for proper trouble diagnosis.

Points in interview

• What: Parts name, system name
• When: Date, Frequency
• Where: Road condition, Place
• In what condition: Driving condition/environment
• Result: Symptom
NOTE:
• Check normal units as well as error symptoms.
- Example: Circuit between ECM and the combination meter is judged normal if the customer indicates

tachometer functions normally.

• When a CAN communication system error is present, multiple control units may malfunction or go into fail-

safe mode.

JSMIA0528GB

Revision: 2013 February

2012 MURANO

LAN-16

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

DIAGNOSIS AND REPAIR WORKFLOW

• Indication of the combination meter is important to detect the root cause because it is the most obvious to

the customer, and it performs CAN communication with many units.

INSPECTION OF VEHICLE CONDITION

Check whether the symptom is reproduced or not.
NOTE:
Do not turn the ignition switch OFF or disconnect the battery cable while reproducing the error. The error may
temporarily correct itself, making it difficult to determine the root cause.

CHECK OF CAN SYSTEM TYPE (HOW TO USE CAN SYSTEM TYPE SPECIFICATION CHART)

Determine CAN system type based on vehicle equipment.
NOTE:
• This chart is used if CONSULT does not automatically recognize CAN system type.
• There are two styles for CAN system type specification charts. Depending on the number of available sys-

tem types, either style A or style B may be used.

CAN System Type Specification Chart (Style A)

NOTE:

SKIB8717E

Revision: 2013 February

2012 MURANO

LAN

DIAGNOSIS AND REPAIR WORKFLOW

LAN-17

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

CAN system type is easily checked with the vehicle equipment identification information shown in the chart.

CAN System Type Specification Chart (Style B)

NOTE:

JSMIA0017GB

Revision: 2013 February

2012 MURANO

LAN-18

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

DIAGNOSIS AND REPAIR WORKFLOW

CAN system type is easily checked with the vehicle equipment identification information shown in the chart.

CREATE INTERVIEW SHEET

Fill out the symptom described by the customer, vehicle condition, and CAN system type on the interview
sheet.

JSMIA0018GB

Revision: 2013 February

2012 MURANO

LAN

DIAGNOSIS AND REPAIR WORKFLOW

LAN-19

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Interview Sheet (Example)

DETECT THE ROOT CAUSE

CAN diagnosis function of CONSULT detects the root cause.

JSMIA0019GB

Revision: 2013 February

2012 MURANO

LAN-20

< HOW TO USE THIS MANUAL >

[CAN]

HOW TO USE THIS SECTION

HOW TO USE THIS MANUAL

HOW TO USE THIS SECTION

Caution

INFOID:0000000007544240

• This section describes information peculiar to a vehicle and inspection procedures.
• For trouble diagnosis procedure, refer to 

LAN-15, "Trouble Diagnosis Procedure"

.

Abbreviation List

INFOID:0000000007544241

Unit name abbreviations in CONSULT CAN diagnosis and in this section are as per the following list.

Abbreviation

Unit name

4WD

AWD control unit

A-BAG

Air bag diagnosis sensor unit

ABS

ABS actuator and electric unit (control unit)

ADP

Driver seat control unit

AV

AV control unit

BCM

BCM

DLC

Data link connector

ECM

ECM

HVAC

A/C auto amp.

IPDM-E

IPDM E/R

M&A

Combination meter

PWBD

Automatic back door control unit

STRG

Steering angle sensor

TCM

TCM

Revision: 2013 February

2012 MURANO

LAN

PRECAUTIONS

LAN-21

< PRECAUTION >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

PRECAUTION

PRECAUTIONS

FOR USA AND CANADA

FOR USA AND CANADA : Precaution for Supplemental Restraint System (SRS) "AIR 
BAG" and "SEAT BELT PRE-TENSIONER"

INFOID:0000000007544242

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

FOR USA AND CANADA : Precautions for Trouble Diagnosis

INFOID:0000000007544243

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. 

FOR USA AND CANADA : Precautions for Harness Repair

INFOID:0000000007544244

• 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).

SKIB8766E

Revision: 2013 February

2012 MURANO

LAN-22

< PRECAUTION >

[CAN]

PRECAUTIONS

• 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.

FOR MEXICO

FOR MEXICO : Precaution for Supplemental Restraint System (SRS) "AIR BAG" and 
"SEAT BELT PRE-TENSIONER"

INFOID:0000000007544245

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. Information necessary to service the system safely is included in the “SRS AIR BAG” and
“SEAT BELT” of this Service Manual.

WARNING:

Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in

the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.

• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal

injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.

• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-

vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.

PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS

WARNING:

Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the

ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.

• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the

battery, and wait at least 3 minutes before performing any service.

FOR MEXICO : Precautions for Trouble Diagnosis

INFOID:0000000007544246

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. 

SKIB8767E

Revision: 2013 February

2012 MURANO

LAN

PRECAUTIONS

LAN-23

< PRECAUTION >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

FOR MEXICO : Precautions for Harness Repair

INFOID:0000000007544247

• 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-24

< BASIC INSPECTION >

[CAN]

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Interview Sheet

INFOID:0000000007544248

SKIB8898E

Revision: 2013 February

2012 MURANO

LAN

CAN COMMUNICATION SYSTEM

LAN-25

< SYSTEM DESCRIPTION >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

SYSTEM DESCRIPTION

CAN COMMUNICATION SYSTEM

CAN System Specification Chart

INFOID:0000000007544249

Determine CAN system type from the following specification chart.
NOTE:
Refer to 

LAN-15, "Trouble Diagnosis Procedure"

 for how to use CAN system specification chart.

×

: Applicable

VEHICLE EQUIPMENT IDENTIFICATION INFORMATION

NOTE:
Check CAN system type from the vehicle shape and equipment.

CAN Communication Signal Chart

INFOID:0000000007544250

Refer to 

LAN-14, "How to Use CAN Communication Signal Chart"

 for how to use CAN communication signal

chart.
NOTE:
Refer to 

LAN-20, "Abbreviation List"

 for the abbreviations of the connecting units.

Body type

Wagon

Axle

2WD

AWD

Engine

VQ35DE

Transmission

CVT

Brake control

VDC

Automatic drive positioner

×

×

Automatic back door system

×

×

Color display

×

×

×

×

CAN  system  type

1

2

3

4

5

6

JPMIA1349GB

Revision: 2013 February

2012 MURANO

LAN-26

< SYSTEM DESCRIPTION >

[CAN]

CAN COMMUNICATION SYSTEM

T: Transmit

R: Receive

Signal name/Connecting unit

ECM

ADP

PW

BD

4WD

AV

HV

AC

M&A

BCM

STRG

ABS

TCM

IPDM

-E

A/C compressor request signal

T

R

Accelerator pedal position signal 

T

R

R

R

ASCD CRUISE indicator signal

T

R

ASCD operation signal

T

R

ASCD SET indicator signal

T

R

Closed throttle position signal

T

R

Cooling fan speed request signal

T

R

Engine and CVT integrated control signal

T

R

R

T

Engine coolant temperature signal

T

R

R

R

Engine speed signal

T

R

R

R

R

Engine status signal

T

R

R

Fuel consumption monitor signal

T

R

R

Fuel filler cap warning display signal

T

R

Malfunctioning indicator lamp signal

T

R

Power generation command value signal

T

R

Hazard request signal

T

R

Sleep-ready signal

T

R

T

R

R

T

Wake up signal

T

R

T

R

AWD LOCK indicator lamp signal

T

R

AWD signal

T

R

AWD malfunction signal

T

R

AWD warning lamp signal

T

R

A/C switch/indicator signal

T

R

R

T

A/C switch operation signal

T

R

Rear window defogger switch signal

*

T

R

System setting signal

T

R

R

T

Voice recognition signal

T

R

A/C switch signal

R

T

T

Blower fan motor switch signal

R

T

T

Brake fluid level switch signal

T

R

Distance to empty signal

R

T

Fuel filler cap warning reset signal

R

T

Fuel level low warning signal

R

T

Fuel level sensor signal

R

T

Odometer signal

T

R

Overdrive control switch signal

T

R

Revision: 2013 February

2012 MURANO

LAN

CAN COMMUNICATION SYSTEM

LAN-27

< SYSTEM DESCRIPTION >

[CAN]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Parking brake switch signal

R

T

Seat belt buckle switch signal

T

R

Vehicle speed signal

R

R

R

R

T

R

R

R

R

R

R

T

R

Automatic back door request signal

R

T

Back door switch signal

R

R

T

Buzzer output signal

R

T

Door switch signal

R

R

R

T

R

Door unlock signal

R

T

Front fog light request signal

T

R

Front wiper request signal

T

R

High beam request signal

R

T

R

Horn reminder signal

T

R

Ignition switch ON signal

R

T

R

R

T

Ignition switch signal

R

T

Interlock/PNP switch signal

T

R

R

T

Key ID signal

R

T

Key switch signal

R

T

Key warning lamp signal

R

T

Low beam request signal

T

R

Low tire pressure warning lamp signal

R

T

Meter display signal

R

T

Oil pressure switch signal

R

T

R

T

Position light request signal

R

T

R

Rear window defogger control signal

T

R

R

R

*

T

Sleep wake up signal

R

R

R

T

R

Starter control relay signal

T

R

Starter relay status signal

T

R

R

T

Starting mode signal

R

T

Stop lamp switch signal

T

R

R

T

Theft warning horn request signal

T

R

TPMS malfunction warning lamp signal

R

T

Steering angle sensor signal

R

R

T

R

ABS operation signal 

T

R

ABS warning lamp signal

R

T

Brake warning lamp signal

R

T

Decel G sensor signal

R

T

Signal name/Connecting unit

ECM

ADP

PW

BD

4WD

AV

HV

AC

M&A

BCM

STRG

ABS

TCM

IPDM

-E

Revision: 2013 February

2012 MURANO

LAN-28

< SYSTEM DESCRIPTION >

[CAN]

CAN COMMUNICATION SYSTEM

*: Models with BOSE system
NOTE:
CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted.

Side G sensor signal

R

T

SLIP indicator lamp signal

R

T

TCS operation signal 

T

R

VDC OFF indicator lamp signal

R

T

VDC operation signal 

T

R

Yaw rate sensor signal

R

T

Current gear position signal

R

T

CVT position indicator signal

R

R

R

R

T

CVT self-diagnosis signal

R

T

Input shaft revolution signal

R

T

N range signal

R

R

T

OD OFF indicator signal

R

T

Output shaft revolution signal

R

T

P range signal

R

R

R

T

R range signal

R

T

Shift position signal

R

R

T

A/C compressor feedback signal

R

R

T

Detention switch signal

R

T

Front wiper stop position signal

R

T

High beam status signal

R

T

Low beam status signal

R

T

Push-button ignition switch status signal

R

T

Signal name/Connecting unit

ECM

ADP

PW

BD

4WD

AV

HV

AC

M&A

BCM

STRG

ABS

TCM

IPDM

-E

Revision: 2013 February

2012 MURANO