Infiniti G37. LAN System (2013 year). Instruction - part 2

 

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Infiniti G37. LAN System (2013 year). Instruction - part 2

 

 

LAN

DIAGNOSIS AND REPAIR WORKFLOW

LAN-17

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

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• 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

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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.

CAN System Type Specification Chart (Style B)

NOTE:

JSMIA0017GB

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LAN

DIAGNOSIS AND REPAIR WORKFLOW

LAN-19

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

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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

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LAN-20

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

DIAGNOSIS AND REPAIR WORKFLOW

Interview Sheet (Example)

DETECT THE ROOT CAUSE

CAN diagnosis function of CONSULT detects the root cause.

JSMIA0019GB

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LAN

HOW TO USE THIS SECTION

LAN-21

< HOW TO USE THIS MANUAL >

[CAN]

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HOW TO USE THIS MANUAL

HOW TO USE THIS SECTION

Caution

INFOID:0000000008296878

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

LAN-16, "Trouble Diagnosis Procedure"

.

Abbreviation List

INFOID:0000000008296879

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

ICC

ICC sensor integrated unit

IPDM-E

IPDM E/R

M&A

Unified meter and A/C amp.

PSB

Pre-crash seat belt control unit

STRG

Steering angle sensor

TCM

TCM

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LAN-22

< PRECAUTION >

[CAN]

PRECAUTIONS

PRECAUTION

PRECAUTIONS

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

INFOID:0000000008832089

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
Instruction.

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 Instruction. 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.

Precautions for Trouble Diagnosis

INFOID:0000000008296881

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. 

Precautions for Harness Repair

INFOID:0000000008296882

• 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

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LAN

PRECAUTIONS

LAN-23

< PRECAUTION >

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• 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.

SKIB8767E

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LAN-24

< BASIC INSPECTION >

[CAN]

DIAGNOSIS AND REPAIR WORKFLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORKFLOW

Interview Sheet

INFOID:0000000008296883

SKIB8898E

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LAN

CAN COMMUNICATION SYSTEM

LAN-25

< SYSTEM DESCRIPTION >

[CAN]

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SYSTEM DESCRIPTION

CAN COMMUNICATION SYSTEM

CAN System Specification Chart

INFOID:0000000008296884

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

LAN-16, "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:0000000008296885

Refer to 

LAN-15, "How to Use CAN Communication Signal Chart"

 for how to use CAN communication signal

chart.
NOTE:
Refer to 

LAN-21, "Abbreviation List"

 for the abbreviations of the connecting units. 

T: Transmit

R: Receive

Body type

Sedan

Axle

2WD

AWD

Engine

VQ25HR

VQ37VHR

Transmission

A/T

M/T

A/T

Brake control

VDC

Automatic drive positioner

×

×

×

×

×

ICC system

×

×

CAN  system  type

1

2

3

4

5

6

7

8

1.

Seat memory switch

2.

ICC sensor integrated unit

A.

With automatic drive positioner

B.

With ICC system

JSMIA0484ZZ

Signal name/Connecting unit

ECM

4WD

AV

PSB

TCM

BCM

M&

A

STRG

ADP

ABS

IC

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IPDM

-E

A/C compressor request signal

T

R

Accelerator pedal position signal 

T

R

R

R

R

ASCD OD cancel request signal

T

R

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LAN-26

< SYSTEM DESCRIPTION >

[CAN]

CAN COMMUNICATION SYSTEM

ASCD operation signal

T

R

ASCD SET indicator signal

T

R

ASCD status signal

T

R

Closed throttle position signal

T

R

Cooling fan speed request signal

T

R

Engine and A/T integrated control signal

T

R

R

T

Engine coolant temperature signal

T

R

Engine speed signal

T

R

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

ICC brake switch signal

T

R

ICC prohibition signal

T

R

ICC steering switch signal

T

R

Malfunctioning indicator lamp signal

T

R

Power generation command value signal

T

R

Snow mode switch signal

T

R

R

R

T

Stop lamp switch signal

T

R

R

T

R

R

T

Wide open throttle position signal

T

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

*1

T

R

A/T CHECK indicator lamp signal

T

R

A/T self-diagnosis signal

R

T

Current gear position signal

T

R

R

Input speed signal

R

T

R

Instruction mode indicator signal

T

R

Instruction mode shift refusal signal

T

R

N range signal

T

R

Output shaft revolution signal

R

T

R

P range signal

T

R

Signal name/Connecting unit

ECM

4WD

AV

PSB

TCM

BCM

M&A

STRG

ADP

ABS

ICC

IPDM

-E

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LAN

CAN COMMUNICATION SYSTEM

LAN-27

< SYSTEM DESCRIPTION >

[CAN]

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Shift position signal

R

*2

T

R

R

R

R

Buzzer output signal

T

R

R

T

Daytime running light request signal

T

R

Door switch signal

T

R

R

R

Door unlock signal

T

R

Front fog light request signal

T

R

R

Front wiper request signal

T

R

R

High beam request signal

T

R

R

Horn reminder signal

T

R

Ignition switch ON signal

T

R

R

T

Ignition switch signal

T

R

Interlock/PNP switch signal

T

R

R

T

Key ID signal

T

R

Key switch signal

T

R

Key warning lamp signal

T

R

Low beam request signal

T

R

Low tire pressure warning lamp signal

T

R

Meter display signal

T

R

R

T

Oil pressure switch signal

T

R

R

T

Position light request signal

T

R

R

Rear window defogger control signal

T

R

R

R

T

Sleep wake up signal

T

R

R

R

Starter control relay signal

T

R

Starter relay status signal

R

T

T

R

Starting mode signal

T

R

Theft warning horn request signal

T

R

TPMS malfunction warning lamp signal

T

R

Trunk switch signal

T

R

Turn indicator signal

T

R

A/C evaporator temperature signal

R

T

A/C switch signal

R

T

Blower fan motor switch signal

R

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

Signal name/Connecting unit

ECM

4WD

AV

PSB

TCM

BCM

M&A

STRG

ADP

ABS

ICC

IPDM

-E

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LAN-28

< SYSTEM DESCRIPTION >

[CAN]

CAN COMMUNICATION SYSTEM

Fuel level sensor signal

R

T

Manual mode shift down signal

R

T

Manual mode shift up signal

R

T

Manual mode signal

R

T

Non-manual mode signal

R

T

Odometer signal

R

T

Paddle shifter shift down signal

*3

R

T

Paddle shifter shift up signal

*3

R

T

Parking brake switch signal

R

R

T

R

Seat belt buckle switch signal

R

T

Sleep-ready signal

R

T

R

T

Target A/C evaporator temperature signal

R

T

Vehicle speed signal

R

R

R

R

R

T

R

R

R

R

R

T

R

Wake up signal

R

T

Steering angle sensor signal

R

*4

T

R

A/T shift schedule change demand signal

R

T

ABS malfunction signal

T

R

ABS operation signal 

R

T

R

ABS warning lamp signal

R

T

Brake pressure control signal

T

R

Brake warning lamp signal

R

T

Side G sensor signal

R

T

TCS gear keep request signal

R

T

TCS malfunction signal

T

R

TCS operation signal 

T

R

VDC OFF indicator lamp signal

R

T

VDC OFF switch signal

T

R

VDC operation signal

T

R

VDC malfunction signal

T

R

VDC warning lamp signal

R

T

Deceleration degree commandment value 
signal

R

T

ICC operation signal

R

T

ICC warning lamp signal

R

T

A/C compressor feedback signal

R

R

T

Detention switch signal

R

R

T

Front wiper stop position signal

R

T

High beam status signal

R

T

Hood switch signal

R

T

Low beam status signal

R

T

Push-button ignition switch status signal

R

T

Signal name/Connecting unit

ECM

4WD

AV

PSB

TCM

BCM

M&A

STRG

ADP

ABS

ICC

IPDM

-E

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LAN

CAN COMMUNICATION SYSTEM

LAN-29

< SYSTEM DESCRIPTION >

[CAN]

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*1: Models with navigation system

*2: Receive reverse position signal only

*3: Models with paddle shifter

*4: Models with rear view monitor

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

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LAN-30

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

CAN COMMUNICATION SYSTEM

DTC/CIRCUIT DIAGNOSIS

CAN COMMUNICATION SYSTEM

Component Parts Location

INFOID:0000000008296886

1.

BCM M122

2.

IPDM E/R E6

3.

Pre-crash seat belt control unit M110

4.

AWD control unit F108

5.

ECM M107

6.

AV control unit 
M85: Without navigation system 
(Without rear view monitor)
M204: Without navigation system 
(With rear view monitor)
M210: With navigation system

7.

Unified meter and A/C amp. M67

8.

ICC sensor integrated unit E67

9.

ABS actuator and electric unit (con-
trol unit) E41

10. Data link connector M24

11.

Steering angle sensor M37

12. A/T assembly F51

13. Driver seat control unit B451

14. Air bag diagnosis sensor unit M147

JSMIA0487ZZ

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LAN

CAN COMMUNICATION SYSTEM

LAN-31

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

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Wiring Diagram - CAN SYSTEM -

INFOID:0000000008296887

For connector terminal arrangements, harness layouts, and alphabets in a 

 (option abbreviation; if not

described in wiring diagram), refer to 

GI-12, "Connector Information"

.

JRMWD3151GB

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LAN-32

< DTC/CIRCUIT DIAGNOSIS >

[CAN]

CAN COMMUNICATION SYSTEM

JRMWD3152GB

2013 G Sedan

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