Lan System: Section

ELECTRICAL & POWER CONTROL
SECTION LAN LAN SYSTEM

B
E
CONTENTS
CAN FUNDAMENTAL Caution ....................................................................20 F
Abbreviation List ......................................................20
PRECAUTION ............................................... 5
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PRECAUTION .............................................. 21 G
PRECAUTIONS ................................................... 5
Precautions for Trouble Diagnosis ............................ 5 PRECAUTIONS ................................................. 21
Precautions for Harness Repair ................................ 5 Precaution for Supplemental Restraint System
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- H
SYSTEM DESCRIPTION .............................. 6 SIONER" .................................................................21
Precaution for Battery Service .................................21
SYSTEM .............................................................. 6 Precautions for Removing Battery Terminal ............21 I
Precautions for Trouble Diagnosis ..........................22
CAN COMMUNICATION SYSTEM ............................. 6
Precautions for Harness Repair ..............................22
CAN COMMUNICATION SYSTEM : System De-
scription ..................................................................... 6 BASIC INSPECTION ................................... 23 J
CAN COMMUNICATION SYSTEM : System Dia-
gram .......................................................................... 6 DIAGNOSIS AND REPAIR WORKFLOW ........ 23
CAN COMMUNICATION SYSTEM : CAN Com- Interview Sheet ........................................................23 K
munication Control Circuit ......................................... 7
SYSTEM DESCRIPTION ............................. 24
DIAG ON CAN ............................................................. 7
DIAG ON CAN : Description ..................................... 7 CAN COMMUNICATION SYSTEM ................... 24 L
DIAG ON CAN : System Diagram ............................. 8 CAN System Specification Chart .............................24
CAN Communication Signal Chart ..........................24
TROUBLE DIAGNOSIS ...................................... 9
Condition of Error Detection ...................................... 9 DTC/CIRCUIT DIAGNOSIS ......................... 28 LAN
Symptom When Error Occurs in CAN Communi-
cation System ............................................................ 9 CAN COMMUNICATION SYSTEM ................... 28
CAN Diagnosis with CONSULT .............................. 12 Component Parts Location ......................................28 N
Self-Diagnosis ......................................................... 12 Wiring Diagram - CAN SYSTEM (EXCEPT NIS-
CAN Diagnostic Support Monitor ............................ 12 MO) - .......................................................................29
How to Use CAN Communication Signal Chart ...... 14 Wiring Diagram - CAN SYSTEM (NISMO) - ............36 O
BASIC INSPECTION ................................... 15 MALFUNCTION AREA CHART ........................ 44
System Description ..................................................44
DIAGNOSIS AND REPAIR WORKFLOW .........15 Main Line .................................................................45 P
Trouble Diagnosis Flow Chart ................................. 15 Branch Line .............................................................45
CAN Short Circuit .............................................................46
HOW TO USE THIS MANUAL ..................... 20 MAIN LINE BETWEEN 4WD AND BCM CIR-
CUIT .................................................................. 47
HOW TO USE THIS SECTION ...........................20 Diagnosis Procedure ...............................................47
Revision: 2015 June LAN-1 GT-R

MAIN LINE BETWEEN BCM AND M&A CIR- ABS BRANCH LINE CIRCUIT .......................... 67
CUIT ................................................................... 48 Diagnosis Procedure ............................................... 67
Diagnosis Procedure .............................................. 48
IPDM-E BRANCH LINE CIRCUIT ..................... 68
MAIN LINE BETWEEN M&A AND STRG CIR- Diagnosis Procedure ............................................... 68
CUIT ................................................................... 49
CAN COMMUNICATION CIRCUIT ................... 69
Diagnosis Procedure ............................................... 69
MAIN LINE BETWEEN STRG AND DLC CIR-
CAN COMMUNICATION CIRCUIT 1 ................ 71
CUIT ................................................................... 50
CAN COMMUNICATION CIRCUIT 2 ................ 73
MAIN LINE BETWEEN DLC AND TCM CIR-
CUIT ................................................................... 51
CAN GATEWAY
MAIN LINE BETWEEN TCM AND ABS CIR- PRECAUTION ............................................ 75

CUIT ................................................................... 52 PRECAUTIONS ................................................. 75
Diagnosis Procedure .............................................. 52 Precaution for Supplemental Restraint System
ECM BRANCH LINE CIRCUIT .......................... 53 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-
SIONER" ................................................................. 75
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Precaution for Battery Service ................................ 75
4WD BRANCH LINE CIRCUIT .......................... 54 Precautions for Removing Battery Terminal ........... 75
SYSTEM DESCRIPTION ........................... 76
A-BAG BRANCH LINE CIRCUIT ...................... 55
Diagnosis Procedure .............................................. 55 COMPONENT PARTS ....................................... 76
Component Parts Location ..................................... 76
BCM BRANCH LINE CIRCUIT .......................... 56
Diagnosis Procedure .............................................. 56 SYSTEM ............................................................ 77
System Description ................................................. 77
E-SUS BRANCH LINE CIRCUIT ....................... 57
Diagnosis Procedure .............................................. 57 DIAGNOSIS SYSTEM (CAN GATEWAY) ......... 78
CONSULT Function ................................................ 78
AV BRANCH LINE CIRCUIT ............................. 58
Diagnosis Procedure .............................................. 58 ECU DIAGNOSIS INFORMATION ............. 79
HVAC BRANCH LINE CIRCUIT ........................ 59 CAN GATEWAY ................................................ 79

Diagnosis Procedure .............................................. 59 Reference Value ..................................................... 79
DTC Inspection Priority Chart ............................... 79
M&A BRANCH LINE CIRCUIT .......................... 60 DTC Index .............................................................. 79
WIRING DIAGRAM .................................... 81
STRG BRANCH LINE CIRCUIT ........................ 61
Diagnosis Procedure .............................................. 61 CAN GATEWAY SYSTEM ................................ 81
Wiring Diagram ....................................................... 81
CGW BRANCH LINE CIRCUIT (CAN COM-
MUNICATION CIRCUIT 1) ................................. 62 BASIC INSPECTION .................................. 83
ADDITIONAL SERVICE WHEN REPLACING
DLC BRANCH LINE CIRCUIT ........................... 63 CAN GATEWAY ................................................ 83
Diagnosis Procedure .............................................. 63 Description .............................................................. 83
Work Procedure ...................................................... 83
TPMS BRANCH LINE CIRCUIT ........................ 64
Diagnosis Procedure .............................................. 64 CONFIGURATION (CAN GATEWAY) .............. 84
Description .............................................................. 84
TCM BRANCH LINE CIRCUIT .......................... 65 Work Procedure ...................................................... 84
DTC/CIRCUIT DIAGNOSIS ........................ 85
TCU BRANCH LINE CIRCUIT ........................... 66
Diagnosis Procedure .............................................. 66 U1000 CAN COMM CIRCUIT ............................ 85
Description .............................................................. 85

DTC Logic ............................................................... 85 AV BRANCH LINE CIRCUIT .......................... 101
Diagnosis Procedure ............................................... 85 Diagnosis Procedure ............................................. 101 A
U1010 CONTROL UNIT (CAN) ..........................86 HVAC BRANCH LINE CIRCUIT ..................... 102
Description .............................................................. 86 Diagnosis Procedure ............................................. 102
DTC Logic ............................................................... 86 B
Diagnosis Procedure ............................................... 86 M&A BRANCH LINE CIRCUIT ....................... 103
Diagnosis Procedure ............................................. 103
B2600 CONFIG ERROR ....................................87 C
Description .............................................................. 87 STRG BRANCH LINE CIRCUIT ..................... 104
DTC Logic ............................................................... 87 Diagnosis Procedure ............................................. 104
DLC BRANCH LINE CIRCUIT ........................ 105 D
POWER SUPPLY AND GROUND CIRCUIT ......88 Diagnosis Procedure ............................................. 105
TPMS BRANCH LINE CIRCUIT ..................... 106
E
REMOVAL AND INSTALLATION ............... 89 Diagnosis Procedure ............................................. 106
CAN GATEWAY .................................................89 TCM BRANCH LINE CIRCUIT ........................ 107

Removal and Installation ......................................... 89 Diagnosis Procedure ............................................. 107 F
CAN SYSTEM (TYPE 1) ABS BRANCH LINE CIRCUIT ........................ 108
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DTC/CIRCUIT DIAGNOSIS ......................... 90 G
IPDM-E BRANCH LINE CIRCUIT ................... 109
MAIN LINE BETWEEN 4WD AND BCM CIR-
CUIT ....................................................................90
H
Diagnosis Procedure ............................................... 90 CAN COMMUNICATION CIRCUIT ................. 110
MAIN LINE BETWEEN BCM AND M&A CIR-
CAN SYSTEM (TYPE 2)
CUIT ....................................................................91 I
Diagnosis Procedure ............................................... 91 DTC/CIRCUIT DIAGNOSIS ....................... 112
MAIN LINE BETWEEN M&A AND STRG CIR- MAIN LINE BETWEEN 4WD AND BCM CIR- J
CUIT ....................................................................92 CUIT ................................................................ 112
Diagnosis Procedure ............................................... 92 Diagnosis Procedure ............................................. 112
MAIN LINE BETWEEN STRG AND DLC CIR- MAIN LINE BETWEEN BCM AND M&A CIR- K
CUIT ....................................................................93 CUIT ................................................................ 113
L
MAIN LINE BETWEEN DLC AND TCM CIR- MAIN LINE BETWEEN M&A AND STRG CIR-
CUIT ....................................................................94 CUIT ................................................................ 114
LAN
MAIN LINE BETWEEN TCM AND ABS CIR- MAIN LINE BETWEEN STRG AND DLC CIR-
CUIT ....................................................................95 CUIT ................................................................ 115
Diagnosis Procedure ............................................... 95 Diagnosis Procedure ............................................. 115 N
ECM BRANCH LINE CIRCUIT ...........................96 MAIN LINE BETWEEN DLC AND TCM CIR-
Diagnosis Procedure ............................................... 96 CUIT ................................................................ 116 O
4WD BRANCH LINE CIRCUIT ...........................97 Diagnosis Procedure ............................................. 116
Diagnosis Procedure ............................................... 97 MAIN LINE BETWEEN TCM AND ABS CIR-
A-BAG BRANCH LINE CIRCUIT .......................98 CUIT ................................................................ 117 P
BCM BRANCH LINE CIRCUIT ..........................99 ECM BRANCH LINE CIRCUIT ....................... 118
E-SUS BRANCH LINE CIRCUIT ...................... 100 4WD BRANCH LINE CIRCUIT ....................... 119
Diagnosis Procedure ............................................. 100 Diagnosis Procedure ............................................. 119

A-BAG BRANCH LINE CIRCUIT .................... 120 DLC BRANCH LINE CIRCUIT ......................... 128
Diagnosis Procedure .............................................120 Diagnosis Procedure ............................................. 128
BCM BRANCH LINE CIRCUIT ........................ 121 TPMS BRANCH LINE CIRCUIT ....................... 129
E-SUS BRANCH LINE CIRCUIT ..................... 122 TCM BRANCH LINE CIRCUIT ......................... 130
AV BRANCH LINE CIRCUIT ........................... 123 TCU BRANCH LINE CIRCUIT ......................... 131
HVAC BRANCH LINE CIRCUIT ...................... 124 ABS BRANCH LINE CIRCUIT ......................... 132
M&A BRANCH LINE CIRCUIT ........................ 125 IPDM-E BRANCH LINE CIRCUIT .................... 133
STRG BRANCH LINE CIRCUIT ...................... 126 CAN COMMUNICATION CIRCUIT 1 ............... 134
CGW BRANCH LINE CIRCUIT (CAN COM- CAN COMMUNICATION CIRCUIT 2 ............... 136
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MUNICATION CIRCUIT 1) ............................... 127 Diagnosis Procedure ............................................. 136
Diagnosis Procedure .............................................127

PRECAUTIONS
< PRECAUTION > [CAN FUNDAMENTAL]
PRECAUTION A
PRECAUTIONS
Precautions for Trouble Diagnosis INFOID:0000000011490037
B
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. C
• Turn the ignition switch OFF and disconnect the battery cable from the negative terminal when
checking the harness.
D
Precautions for Harness Repair INFOID:0000000011490038
• Solder the repaired area and wrap tape around the soldered area.
NOTE: E
A fray of twisted lines must be within 110 mm (4.33 in).
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G
SKIB8766E
H
• Bypass connection is never allowed at the repaired area.
NOTE:
Bypass connection may cause CAN communication error. The I
spliced wire becomes separated and the characteristics of twisted
line are lost.
J
K
SKIB8767E
L
• Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communica-
tion line.
LAN

SYSTEM
< SYSTEM DESCRIPTION > [CAN FUNDAMENTAL]
SYSTEM DESCRIPTION
SYSTEM
CAN COMMUNICATION SYSTEM
CAN COMMUNICATION SYSTEM : System Description INFOID:0000000011490039
• CAN communication is a multiplex communication system. This enables the system to transmit and receive
large quantities of data at high speed by connecting control units with two communication lines (CAN-H and
CAN-L).
• Control units on the CAN network transmit signals using the CAN communication control circuit. They
receive only necessary signals from other control units to operate various functions.
• CAN communication lines adopt twisted-pair line style (two lines twisted) for noise immunity.
CAN COMMUNICATION SYSTEM : System Diagram INFOID:0000000011490040
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SKIB8887E
Each control unit passes an electric current to the termination circuits when transmitting CAN communication
signal. The termination circuits produce an electrical potential difference between CAN-H and CAN-L. CAN
communication system transmits and receives CAN communication signals by the potential difference.
Component Description
Main line CAN communication line between splices
Branch line CAN communication line between splice and a control unit
Splice A point connecting a branch line with a main line
Termination circuit Refer to LAN-7, "CAN COMMUNICATION SYSTEM : CAN Communication Control Circuit".

SYSTEM
CAN COMMUNICATION SYSTEM : CAN Communication Control Circuit INFOID:0000000011490041
SKIB8713E F
Component System description
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CAN controller It controls CAN communication signal transmission and reception, error detection, etc. G
It converts digital signal into CAN communication signal, and CAN communication signal into digital
Transceiver IC
signal.
Noise filter It eliminates noise of CAN communication signal. H
Termination circuit* It produces potential difference.
(Resistance of approx. 120 Ω)
I
*: These are the only control units wired with both ends of CAN communication system.
DIAG ON CAN
DIAG ON CAN : Description INFOID:0000000011490042
J
“Diag on CAN” is a diagnosis using CAN communication instead of previous DDL1 and DDL2 communication
lines, between control units and diagnosis unit. K
LAN

SYSTEM
DIAG ON CAN : System Diagram INFOID:0000000011490043
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SKIB8714E
Name Harness Description

Tx
DDL1 It is used for trouble diagnosis. (CAN-H and CAN-L are used for controlling)
Rx
DDL2 K-LINE It is used for trouble diagnosis. (CAN-H and CAN-L are used for controlling)
CAN-H
Diag on CAN It is used for trouble diagnosis and control.
CAN-L

TROUBLE DIAGNOSIS
TROUBLE DIAGNOSIS
A
Condition of Error Detection INFOID:0000000011490044
DTC (e.g. U1000 and U1001) of CAN communication is indicated on SELF-DIAG RESULTS on CONSULT if a B
CAN communication signal is not transmitted or received between units for 2 seconds or more.
CAN COMMUNICATION SYSTEM ERROR
• CAN communication line open (CAN-H, CAN-L, or both) C
• CAN communication line short (ground, between CAN communication lines, other harnesses)
• Error of CAN communication control circuit of the unit connected to CAN communication line
WHEN DTC OF CAN COMMUNICATION IS INDICATED EVEN THOUGH CAN COMMUNICATION D
SYSTEM IS NORMAL
• Removal/installation of parts: Error may be detected when removing and installing CAN communication unit
and related parts while turning the ignition switch ON. (A DTC except for CAN communication may be E
detected.)
• Fuse blown out (removed): CAN communication of the unit may cease.
• Voltage drop: Error may be detected if voltage drops due to discharged battery when turning the ignition
switch ON (Depending on the control unit which carries out CAN communication). F
• Error may be detected if the power supply circuit of the control unit, which carries out CAN communication,
malfunctions (Depending on the control unit which carries out CAN communication).
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• Error may be detected if reprogramming is not completed normally. G
NOTE:
CAN communication system is normal if DTC of CAN communication is indicated on SELF-DIAG RESULTS of
CONSULT under the above conditions. Erase the memory of the self-diagnosis of each control unit. H
Symptom When Error Occurs in CAN Communication System INFOID:0000000011490045
In CAN communication system, multiple units mutually transmit and receive signals. Each unit cannot transmit I
and receive signals if any error occurs on CAN communication line. Under this condition, multiple control units
related to the root cause malfunction or go into fail-safe mode.
ERROR EXAMPLE J
NOTE:
• Each vehicle differs in symptom of each unit under fail-safe mode and CAN communication line wiring.
• Refer to LAN-20, "Abbreviation List" for the unit abbreviation.
K
Example: TCM branch line open circuit
LAN
SKIB8738E
Unit name Symptom

ECM Engine torque limiting is affected, and shift harshness increases.
BCM Reverse warning chime does not sound.

TROUBLE DIAGNOSIS
Unit name Symptom
EPS control unit Normal operation.
• Shift position indicator and OD OFF indicator turn OFF.
Combination meter
• Warning lamps turn ON.
ABS actuator and electric unit (control unit) Normal operation.
TCM No impact on operation.
IPDM E/R Normal operation.
Example: Data link connector branch line open circuit
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SKIB8739E
Unit name Symptom

ECM
BCM
EPS control unit
Combination meter Normal operation.
ABS actuator and electric unit (control unit)
TCM
IPDM E/R
NOTE:
• When data link connector branch line is open, transmission and reception of CAN communication signals
are not affected. Therefore, no symptoms occur. However, be sure to repair malfunctioning circuit.
• The model (all units on CAN communication system are Diag on CAN) cannot perform CAN diagnosis with
CONSULT if the following error occurs. The error is judged by the symptom.
Error Difference of symptom

Data link connector branch line open circuit Normal operation.
Most of the units which are connected to the CAN communication
CAN-H, CAN-L harness short-circuit
system enter fail-safe mode or are deactivated.

TROUBLE DIAGNOSIS
Example: Main Line Between Data Link Connector and ABS Actuator and Electric Unit (Control Unit) Open Circuit
A
SKIB8740E F
Unit name Symptom
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ECM Engine torque limiting is affected, and shift harshness increases. G
• Reverse warning chime does not sound.
BCM • The front wiper moves under continuous operation mode even though the front wip-
er switch being in the intermittent position.
H
EPS control unit The steering effort increases.
• The shift position indicator and OD OFF indicator turn OFF.
Combination meter • The speedometer is inoperative.
I
• The odo/trip meter stops.
TCM No impact on operation. J
When the ignition switch is ON,
IPDM E/R • The headlamps (Lo) turn ON.
• The cooling fan continues to rotate.
K
Example: CAN-H, CAN-L Harness Short Circuit
LAN
SKIB8741E

TROUBLE DIAGNOSIS
Unit name Symptom

• Engine torque limiting is affected, and shift harshness increases.
ECM
• Engine speed drops.
• Reverse warning chime does not sound.
• The front wiper moves under continuous operation mode even though the front
wiper switch being in the intermittent position.
• The room lamp does not turn ON.
BCM
• The engine does not start (if an error or malfunction occurs while turning the igni-
tion switch OFF.)
• The steering lock does not release (if an error or malfunction occurs while turning
the ignition switch OFF.)
EPS control unit The steering effort increases.
• The tachometer and the speedometer do not move.
Combination meter • Warning lamps turn ON.
• Indicator lamps do not turn ON.
TCM No impact on operation.
When the ignition switch is ON,
IPDM E/R • The headlamps (Lo) turn ON.
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• The cooling fan continues to rotate.
CAN Diagnosis with CONSULT INFOID:0000000011490046
CAN diagnosis on CONSULT extracts the root cause by receiving the following information.
• Response to the system call
• Control unit diagnosis information
• Self-diagnosis
• CAN diagnostic support monitor
Self-Diagnosis INFOID:0000000011490047
If communication signals cannot be transmitted or received among control units communicating via CAN com-
munication line, CAN communication-related DTC is displayed on the CONSULT “Self Diagnostic Result”
screen.
NOTE:
The following table shows examples of CAN communication-related DTC. For other DTC, refer to the applica-
ble sections.
Self-diagnosis item
DTC DTC detection condition Inspection/Action
(CONSULT indication)
When ECM is not transmitting or receiving CAN
ECM communication signal of OBD (emission-relat-
ed diagnosis) for 2 seconds or more.
U1000 CAN COMM CIRCUIT
When a control unit (except for ECM) is not
Except Start the inspection. Re-
transmitting or receiving CAN communication
for ECM fer to the applicable sec-
signal for 2 seconds or more.
tion of the indicated
When ECM is not transmitting or receiving CAN communi- control unit.
U1001 CAN COMM CIRCUIT cation signal other than OBD (emission-related diagnosis)
for 2 seconds or more.
When a control unit is not transmitting or receiving CAN
U1002 SYSTEM COMM
communication signal for 2 seconds or less.
When an error is detected during the initial diagnosis for Replace the control unit
U1010 CONTROL UNIT(CAN)
CAN controller of each control unit. indicating “U1010”.
CAN Diagnostic Support Monitor INFOID:0000000011490048
MONITOR ITEM (CONSULT)

TROUBLE DIAGNOSIS
Example: CAN DIAG SUPPORT MNTR indication
A
JSMIA0964GB F
Without PAST
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Item PRESENT Description G
OK Normal at present
Initial diagnosis
NG Control unit error (Except for some control units)
H
Transmission diagnosis Unable to transmit signals for 2 seconds or more.
UNKWN
Diagnosis not performed I
Control unit name Unable to receive signals for 2 seconds or more.

(Reception diagnosis) J
UNKWN Diagnosis not performed
No control unit for receiving signals. (No applicable optional parts)
With PAST K
Item PRESENT PAST Description

OK Normal at present and in the past L
OK Normal at present, but unable to transmit signals for 2 seconds or more

Transmission diagnosis 1 – 39 in the past. (The number indicates the number of ignition switch cycles
from OFF to ON.) LAN
UNKWN 0 Unable to transmit signals for 2 seconds or more at present.
OK Normal at present and in the past
N
OK Normal at present, but unable to receive signals for 2 seconds or more
1 – 39 in the past. (The number indicates the number of ignition switch cycles
Control unit name from OFF to ON.)
(Reception diagnosis) O
UNKWN 0 Unable to receive signals for 2 seconds or more at present.
Diagnosis not performed.
Not diagnosed –
No control unit for receiving signals. (No applicable optional parts)
P
MONITOR ITEM (ON-BOARD DIAGNOSIS)
NOTE:
For some models, CAN communication diagnosis result is received from the vehicle monitor.

TROUBLE DIAGNOSIS
Example: Vehicle Display
Result indi-
Item Error counter Description
cated
OK 0 Normal at present
CAN_COMM Control unit error
(Initial diagnosis) NG 1 – 50 (The number indicates how many times diagnosis has been
run.)
CAN_CIRC_1 Unable to transmit for 2 seconds or more at present.
(Transmission diagnosis) UNKWN 1 – 50 (The number indicates how many times diagnosis has been
run.)
Unable to transmit for 2 seconds or more at present.
(The number indicates how many times diagnosis has been
CAN_CIRC_2 – 9 run.)
(Reception diagnosis of each unit) UNKWN 1 – 50
Diagnosis not performed.
No control unit for receiving signals. (No applicable optional
parts)
How to Use CAN Communication Signal Chart
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INFOID:0000000011490049
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.
SKIB8715E

DIAGNOSIS AND REPAIR WORKFLOW
< BASIC INSPECTION > [CAN FUNDAMENTAL]
BASIC INSPECTION A
Trouble Diagnosis Flow Chart INFOID:0000000011490050
B
DESCRIPTION
C
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G
JSMIA0528GB LAN
DETAIL OF TROUBLE DIAGNOSIS FLOW CHART
1.INTERVIEW WITH CUSTOMER N
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.
O
Points in interview
• What: Parts name, system name
• When: Date, Frequency
• Where: Road condition, Place P
• In what condition: Driving condition/environment
• Result: Symptom
Notes for checking error symptoms:
• 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.
• 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.
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SKIB8717E
>> GO TO 2.
2.INSPECTION OF VEHICLE CONDITION
Check whether the symptom is reproduced or not.
NOTE:
Do not turn the ignition switch OFF or disconnect the 12V battery cable while reproducing the error. The error
may temporarily correct itself, making it difficult to determine the root cause.
>> GO TO 3.
3.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:

CAN system type is easily checked with the vehicle equipment identification information shown in the chart.
A
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G
LAN
N
JSMIA0529GB
• CAN System Type Specification Chart (Style B)

NOTE: O

CAN system type is easily checked with the vehicle equipment identification information shown in the chart.
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JSMIA0530GB
>> GO TO 4.
4.CREATE INTERVIEW SHEET
Fill out the symptom described by the customer, vehicle condition, and CAN system type on the interview
sheet.
NOTE:

Interview Sheet (Example)
A
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G
L
JSMIA0531GB
LAN
>> GO TO 5.
5.DETECT THE ROOT CAUSE
CAN diagnosis function of CONSULT detects a root cause. N
>> GO TO 6.
O
6.REPAIR OR REPLACE MALFUNCTIONING PART
Repair or replace malfunctioning parts identified by CAN diagnosis function of CONSULT.
P
Main line>>Refer to LAN-45, "Main Line".
Branch line>> Refer to LAN-45, "Branch Line".
Short circuit>> Refer to LAN-46, "Short Circuit".

HOW TO USE THIS SECTION
< HOW TO USE THIS MANUAL > [CAN]
HOW TO USE THIS MANUAL

HOW TO USE THIS SECTION
Caution INFOID:0000000011490051
• This section describes information peculiar to a vehicle and inspection procedures.

• For trouble diagnosis procedure, refer to LAN-15, "Trouble Diagnosis Flow Chart".
Abbreviation List INFOID:0000000011490052
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)
AV AV control unit
BCM BCM
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CGW CAN gateway
DLC Data link connector
ECM ECM
E-SUS E-SUS control unit
HVAC A/C auto amp.
IPDM-E IPDM E/R
M&A Combination meter
STRG Steering angle sensor
TCM TCM
TCU Vehicle data transmitter
TPMS Low tire pressure warning control unit

PRECAUTIONS
< PRECAUTION > [CAN]
PRECAUTION A
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT B
PRE-TENSIONER" INFOID:0000000011490053
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along C
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. D
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING: E
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
F
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
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Module, see “SRS AIR BAG”. G
• 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. H
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation. I
• 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 J
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.
K
Precaution for Battery Service INFOID:0000000011490054
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
L
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
LAN
Precautions for Removing Battery Terminal INFOID:0000000011490055
• When removing the 12V battery terminal, turn OFF the ignition
switch and wait at least 30 seconds. N
NOTE:
ECU may be active for several tens of seconds after the ignition
switch is turned OFF. If the battery terminal is removed before ECU O
stops, then a DTC detection error or ECU data corruption may
occur.
• For vehicles with the 2-batteries, be sure to connect the main bat-
tery and the sub battery before turning ON the ignition switch. P
NOTE:
If the ignition switch is turned ON with any one of the terminals of
SEF289H
main battery and sub battery disconnected, then DTC may be
detected.
• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE:
The removal of 12V battery may cause a DTC detection error.

PRECAUTIONS
< PRECAUTION > [CAN]
Precautions for Trouble Diagnosis INFOID:0000000011490056
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:0000000011490057
• 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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• 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.
SKIB8767E
• Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communica-
tion line.

< BASIC INSPECTION > [CAN]
BASIC INSPECTION A
Interview Sheet INFOID:0000000011490058
B
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G
LAN
SKIB8898E

< SYSTEM DESCRIPTION > [CAN]
SYSTEM DESCRIPTION
CAN System Specification Chart INFOID:0000000011490059
Determine CAN system type from the following specification chart.

NOTE:
Refer to LAN-15, "Trouble Diagnosis Flow Chart" for how to use CAN system specification chart.
×: Applicable
Body type Coupe

Axle AWD
Engine VR38DETT
Transmission Dual clutch transmission
Brake control VDC
NissanConnect NISMO plus ×
CAN system type 1 2
VEHICLE EQUIPMENT IDENTIFICATION INFORMATION
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NOTE:
Check CAN system type from the vehicle shape and equipment.
JSMIA1921ZZ
1. NISMO logo
A. With NissanConnect NISMO plus
CAN Communication Signal Chart INFOID:0000000011490060
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.
T: Transmit R: Receive
IPDM-E
E-SUS
STRG
TPMS
HVAC
CGW
ECM
BCM
4WD
TCM
M&A
TCU
ABS
AV
Signal name
A/C compressor feedback signal T R

A/C compressor request signal T R
Accelerator pedal position signal T R R R R
ASCD status signal T R R
Cooling fan speed request signal T R
Engine and transmission integrated T R

control signal R T
T R R
Engine coolant temperature signal
R T

IPDM-E
E-SUS
TPMS
STRG
HVAC
CGW
4WD
ECM
BCM
M&A
TCM
TCU
ABS
A
AV
Signal name
Engine estimated torque signal T R

Engine speed signal T R R R R R
B
Engine status signal T R R R

T R C
Fuel consumption monitor signal
R T
Malfunctioning indicator lamp signal T R
Power generation command value D
T R
signal
T R
E
T R
T R
T R
Vehicle condition signal F
T R
T R
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T R G
R T
AWD clutch high temperature warning
display signal
T R H
AWD signal T R
AWD system warning display signal T R
I
AWD warning lamp signal T R
Front/rear tire size discrepancy warn-
T R
ing display signal J
T R
Front torque distribution rate signal
R T
Buzzer output signal T R K
T R
Buzzer request signal
R T L
Daytime running light request signal T R
Door switch signal T R R
Front wiper request signal T R LAN
High beam request signal T R R
Horn reminder signal T R
N
T R
Ignition switch ON signal
R T
Key warning lamp signal T R O
Low beam request signal T R
Meter display signal T R
P
Position light request signal T R R
T R
Rear window defogger control signal
R R T
T R
Run-flat tire warning display signal
R T
Sleep wake up signal T R R R

IPDM-E
E-SUS
TPMS
STRG
HVAC
CGW
4WD
ECM
BCM
M&A
TCM
TCU
ABS
AV
Signal name
Starter control relay signal T R

T R
Starter relay status signal
R T
T R
Steering lock relay signal
R T
Theft warning horn request signal T R
T R R
Tire pressure warning lamp signal
R R T
Trunk switch signal T R
Turn indicator signal T R
A/C switch operation signal T R
Rear window defogger switch signal R T
Voice recognition signal T R
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A/C display signal R T
A/C switch signal R T
Blower fan motor switch signal R T
Air-Fuel ration signal R T
Boost pressure signal R T
Distance to empty signal R T
Engine oil pressure signal R T
Engine oil temperature signal R T
Fuel level sensor signal R T
Odometer signal R T
Parking brake switch signal R R T
Seat belt buckle switch signal R T
R T
Shift position signal
* R T R
R
R T
Sleep-ready signal
R T
R T
Transmission oil pressure signal
R T
R T
Transmission oil temperature signal
R R T
R R R T R R R
Vehicle speed signal
R R R R R R R R T
Wake up signal R T
Steering angle sensor signal R R R T R
Low tire pressure warning display sig-
R T
nal
Tire pressure monitoring system warn-
R T
ing display signal
Tire pressure signal R T
Input shaft revolution signal R T

IPDM-E
E-SUS
TPMS
STRG
HVAC
CGW
4WD
ECM
BCM
M&A
TCM
TCU
ABS
A
AV
Signal name
Output shaft revolution signal R T

SAVE mode control signal R R T
B
Shift lever position check display sig-

R T
nal
C
Shift lever position warning display
R T
signal
Snow mode switch signal R T
D
Transmission clutch high temperature
R T
warning display signal
Transmission oil high temperature
R T E
warning display signal
Transmission self-diagnosis signal R T
Transmission system check display F
R T
signal
Transmission system warning display
R T
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signal
G
Transmission warning light signal R T
ABS malfunction signal R T
ABS operation signal R R T H
ABS warning display signal R T
Brake pressure control signal R R T
I
Brake warning lamp signal R T
Decel G signal R R T
Side G sensor signal R R R R T J
Stop lamp switch signal R T
VDC OFF indicator lamp signal R T
VDC malfunction signal R T
K
VDC operation signal R T

VDC-R mode signal R T L
VDC warning display signal R T
VDC warning lamp signal R T
Yaw rate sensor signal R R T LAN
Front wiper stop position signal R T
High beam status signal R T
N
Hood switch signal R T
Low beam status signal R T
Push-button ignition switch status sig- O
R T
nal
Steering lock unit status signal R T
*: P, N position signal only P
NOTE:
CAN data of the air bag diagnosis sensor unit is not used by usual service work, thus it is omitted.

< DTC/CIRCUIT DIAGNOSIS > [CAN]
DTC/CIRCUIT DIAGNOSIS
Component Parts Location INFOID:0000000011490061
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JSMIA1922ZZ
1. BCM M122 2. ECM M107 3. E-SUS control unit M110

4. IPDM E/R E6 5. AV control unit M203 6. A/C auto amp. M66
7. ABS actuator and electric unit (con- 8. CAN gateway M125 9. Data link connector M24
trol unit) E41
10. Combination meter M53 11. Low tire pressure warning control 12. Steering angle sensor M37
unit M14
13. TCM B45 14. Vehicle data transmitter B72 15. Air bag diagnosis sensor unit M157
16. AWD control unit B213

Wiring Diagram - CAN SYSTEM (EXCEPT NISMO) - INFOID:0000000011490062
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G
LAN
JRMWF7914GB
P

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JRMWF7915GB

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G
LAN
JRMWG8001GB

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JRMWG8002GB

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G
LAN
JRMWG8003GB

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JRMWG8004GB

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G
LAN
JRMWG8005GB

Wiring Diagram - CAN SYSTEM (NISMO) - INFOID:0000000011490063
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JRMWG8006GB

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G
LAN
JRMWG8007GB

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JRMWG8008GB

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G
LAN
JRMWG8009GB

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JRMWG8010GB

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G
LAN
JRMWG8011GB

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JRMWG8012GB

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G
LAN
JRMWG8013GB

MALFUNCTION AREA CHART
System Description INFOID:0000000011490064
SYSTEM DIAGRAM
Except NISMO
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JSMIA1923GB

NISMO
A
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G
JSMIA1924GB
K
Main Line INFOID:0000000011490065

L
Malfunction area Reference

Main line between AWD control unit and BCM LAN-47, "Diagnosis Procedure" LAN
Main line between BCM and combination meter LAN-48, "Diagnosis Procedure"
Main line between combination meter and steering angle sensor LAN-49, "Diagnosis Procedure"
N
Main line between steering angle sensor and data link connector LAN-50, "Diagnosis Procedure"
Main line between data link connector and TCM LAN-51, "Diagnosis Procedure"
Main line between TCM and ABS actuator and electric unit (con- O
LAN-52, "Diagnosis Procedure"
trol unit)
Branch Line INFOID:0000000011490066

P

ECM branch line circuit LAN-53, "Diagnosis Procedure"
AWD control unit branch line circuit LAN-54, "Diagnosis Procedure"
Air bag diagnosis sensor unit branch line circuit LAN-55, "Diagnosis Procedure"

BCM branch line circuit LAN-56, "Diagnosis Procedure"
E-SUS control unit branch line circuit LAN-57, "Diagnosis Procedure"
AV control unit branch line circuit LAN-58, "Diagnosis Procedure"
A/C auto amp. branch line circuit LAN-59, "Diagnosis Procedure"
Combination meter branch line circuit LAN-60, "Diagnosis Procedure"
Steering angle sensor branch line circuit LAN-61, "Diagnosis Procedure"
CAN gateway branch line circuit LAN-62, "Diagnosis Procedure"
Data link connector branch line circuit LAN-63, "Diagnosis Procedure"
Low tire pressure warning control unit branch line circuit LAN-64, "Diagnosis Procedure"
TCM branch line circuit LAN-65, "Diagnosis Procedure"
Vehicle data transmitter branch line circuit LAN-66, "Diagnosis Procedure"
ABS actuator and electric unit (control unit) branch line circuit LAN-67, "Diagnosis Procedure"
IPDM E/R branch line circuit LAN-68, "Diagnosis Procedure"
Short Circuit INFOID:0000000011490067
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CAN communication circuit LAN-69, "Diagnosis Procedure"
CAN communication circuit 1 LAN-71, "Diagnosis Procedure"
CAN communication circuit 2 LAN-73, "Diagnosis Procedure"

MAIN LINE BETWEEN 4WD AND BCM CIRCUIT
A
Diagnosis Procedure INFOID:0000000011490068
1.CHECK CONNECTOR B
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 C
and harness side).
- Harness connector B201
- Harness connector M117
D
Is the inspection result normal?
YES >> GO TO 2.
NO >> Repair the terminal and connector. E
2.CHECK HARNESS CONTINUITY (OPEN CIRCUIT)
1. Disconnect the harness connectors B201 and M117.
2. Check the continuity between the harness connector terminals. F
Connector No. Terminal No. Continuity
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62 70 Existed G
B201
61 69 Existed
H
YES >> GO TO 3.
NO >> Repair the main line between the AWD control unit and the harness connector B201.
3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT) I
1. Disconnect the connector of BCM.
2. Check the continuity between the harness connector and the BCM harness connector.
J
Harness connector BCM harness connector
Continuity
Connector No. Terminal No. Connector No. Terminal No.
70 91 Existed K
M117 M122
69 90 Existed
Is the inspection result normal? L
YES (Present error)>>Check CAN system type decision again.
YES (Past error)>>Error was detected in the main line between the AWD control unit and the BCM.
NO >> Repair the main line between the harness connector M117 and the BCM.
LAN

MAIN LINE BETWEEN BCM AND M&A CIRCUIT

3. Disconnect the following harness connectors.
- ECM
- BCM
- Combination meter
4. Check the continuity between the BCM harness connector and the combination meter harness connector.
BCM harness connector Combination meter harness connector

Continuity
91 21 Existed
M122 M53
90 22 Existed
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YES (Past error)>>Error was detected in the main line between the BCM and the combination meter.
NO >> Repair the main line between the BCM and the combination meter.

MAIN LINE BETWEEN M&A AND STRG CIRCUIT
A
1.CHECK HARNESS CONTINUITY (OPEN CIRCUIT) B

3. Disconnect the following harness connectors. C
- ECM
- Combination meter
- Steering angle sensor
D
4. Check the continuity between the combination meter harness connector and the steering angle sensor
harness connector.
Combination meter harness connector Steering angle sensor harness connector E

Continuity
21 5 Existed
M53 M37 F
22 2 Existed
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YES (Present error)>>Check CAN system type decision again. G
YES (Past error)>>Error was detected in the main line between the combination meter and the steering
angle sensor.
NO >> Repair the main line between the combination meter and the steering angle sensor. H
LAN

MAIN LINE BETWEEN STRG AND DLC CIRCUIT

- ECM
4. Check the continuity between the steering angle sensor harness connector and the data link connector.
Steering angle sensor harness connector Data link connector

Continuity
5 6 Existed
M37 M24
2 14 Existed
YES (Past error)>>Error was detected in the main line between the steering angle sensor and the data link
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connector.
NO >> Repair the main line between the steering angle sensor and the data link connector.

MAIN LINE BETWEEN DLC AND TCM CIRCUIT
A
1.CHECK CONNECTOR B
and harness side).
D
YES >> GO TO 2.
1. Disconnect the harness connectors M7 and B1.
2. Check the continuity between the data link connector and the harness connector. F
Data link connector Harness connector
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Continuity
Connector No. Terminal No. Connector No. Terminal No. G
6 70 Existed
M24 M7
14 69 Existed
H
YES >> GO TO 3.
NO >> Repair the main line between the data link connector and the harness connector M7. I
1. Disconnect the connector of TCM.
2. Check the continuity between the harness connector and the TCM harness connector. J
Harness connector TCM harness connector

Continuity
Connector No. Terminal No. Connector No. Terminal No. K
70 11 Existed
B1 B45
69 15 Existed
L
YES (Past error)>>Error was detected in the main line between the data link connector and the TCM. LAN
NO >> Repair the main line between the harness connector B1 and the TCM.

MAIN LINE BETWEEN TCM AND ABS CIRCUIT
1.CHECK CONNECTOR
3. Check the following terminals and connectors for damage, bend and loose connection (connector side
and harness side).
- Harness connector E104
YES >> GO TO 2.
NO >> Repair the terminal and connector.
- TCM
- Harness connectors B3 and E104
2. Check the continuity between the TCM harness connector and the harness connector.
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TCM harness connector Harness connector
Continuity
11 1 Existed
B45 B3
15 6 Existed
YES >> GO TO 3.
NO >> Repair the main line between the TCM and the harness connector B3.
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.

Harness connector
harness connector Continuity
1 30 Existed
E104 E41
6 15 Existed
YES (Past error)>>Error was detected in the main line between the TCM and the ABS actuator and electric
unit (control unit).
NO >> Repair the main line between the harness connector E104 and the ABS actuator and electric unit
(control unit).

ECM BRANCH LINE CIRCUIT
A
1.CHECK CONNECTOR B
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con- C
nector side).
- ECM
D
YES >> GO TO 2. E
2.CHECK HARNESS FOR OPEN CIRCUIT
1. Disconnect the connector of ECM. F
2. Check the resistance between the ECM harness connector terminals.
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ECM harness connector G
Resistance (Ω)
Connector No. Terminal No.
M107 101 97 Approx. 108 – 132
H
Is the measurement value within the specification?
YES >> GO TO 3.
NO >> Repair the ECM branch line.
I
3.CHECK POWER SUPPLY AND GROUND CIRCUIT
Check the power supply and the ground circuit of the ECM. Refer to EC-191, "Diagnosis Procedure (GT-R cer-
tified NISSAN dealer)". J
YES (Present error)>>Replace the ECM. Refer to EC-20, "ADDITIONAL SERVICE WHEN REPLACING
CONTROL UNIT : Special Repair Requirement (GT-R certified NISSAN dealer)". K
YES (Past error)>>Error was detected in the ECM branch line.
NO >> Repair the power supply and the ground circuit.
L
LAN

4WD BRANCH LINE CIRCUIT
1.CHECK CONNECTOR
3. Check the terminals and connectors of the AWD control unit for damage, bend and loose connection (unit
side and connector side).
YES >> GO TO 2.
1. Disconnect the connector of AWD control unit.
2. Check the resistance between the AWD control unit harness connector terminals.
AWD control unit harness connector

Resistance (Ω)
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B213 8 16 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the AWD control unit branch line.
Check the power supply and the ground circuit of the AWD control unit. Refer to DLN-20, "Diagnosis Proce-
dure (GT-R certified NISSAN dealer)".
YES (Present error)>>Replace the AWD control unit. Refer to DLN-44, "Exploded View (GT-R certified NIS-
SAN dealer)".
YES (Past error)>>Error was detected in the AWD control unit branch line.

A-BAG BRANCH LINE CIRCUIT
A
WARNING: B
• 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.
C
1.CHECK CONNECTOR
2. Disconnect the battery cable from the negative terminal. D
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? E
YES >> GO TO 2.
NO >> Replace the main harness.
2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT F
Check the air bag diagnosis sensor unit. Refer to SRC-5, "Work Flow".
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G
YES >> Replace the main harness.
NO >> Replace parts whose air bag system has a malfunction.
H
LAN

BCM BRANCH LINE CIRCUIT
1.CHECK CONNECTOR
3. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and
connector side).
YES >> GO TO 2.
2. Check the resistance between the BCM harness connector terminals.
BCM harness connector

Resistance (Ω)
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M122 91 90 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the BCM branch line.
Check the power supply and the ground circuit of the BCM. Refer to BCS-41, "Diagnosis Procedure".
YES (Present error)>>Replace the BCM. Refer to BCS-89, "Exploded View".
YES (Past error)>>Error was detected in the BCM branch line.

E-SUS BRANCH LINE CIRCUIT
A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the E-SUS control unit for damage, bend and loose connection C
(unit side and connector side).
YES >> GO TO 2. D
E
1. Disconnect the connector of E-SUS control unit.
2. Check the resistance between the E-SUS control unit harness connector terminals.
E-SUS control unit harness connector F

Resistance (Ω)
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M110 3 1 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the E-SUS control unit branch line. H
Check the power supply and the ground circuit of the E-SUS control unit. Refer to SCS-44, "Diagnosis Proce-
dure (GT-R certified NISSAN dealer)". I
YES (Present error)>>Replace the E-SUS control unit. Refer to SCS-61, "Exploded View (GT-R certified NIS-
SAN dealer)". J
YES (Past error)>>Error was detected in the E-SUS control unit branch line.
K
LAN

AV BRANCH LINE CIRCUIT
1.CHECK CONNECTOR
3. Check the terminals and connectors of the AV control unit for damage, bend and loose connection (unit
YES >> GO TO 2.
1. Disconnect the connector of AV control unit.
2. Check the resistance between the AV control unit harness connector terminals.
AV control unit harness connector

Resistance (Ω)
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M203 90 74 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the AV control unit branch line.
Check the power supply and the ground circuit of the AV control unit. Refer to AV-137, "AV CONTROL UNIT :
Diagnosis Procedure".
YES (Present error)>>Replace the AV control unit. Refer to AV-166, "Exploded View".
YES (Past error)>>Error was detected in the AV control unit branch line.

HVAC BRANCH LINE CIRCUIT
A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit C
YES >> GO TO 2. D
E
1. Disconnect the connector of A/C auto amp.
2. Check the resistance between the A/C auto amp. harness connector terminals.
A/C auto amp. harness connector F

Resistance (Ω)
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M66 1 2 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the A/C auto amp. branch line. H
Check the power supply and the ground circuit of the A/C auto amp. Refer to HAC-59, "A/C AUTO AMP. :
Diagnosis Procedure". I
YES (Present error)>>Replace the A/C auto amp. Refer to HAC-96, "Exploded View".
YES (Past error)>>Error was detected in the A/C auto amp. branch line. J
LAN

M&A BRANCH LINE CIRCUIT
1.CHECK CONNECTOR
3. Check the terminals and connectors of the combination meter for damage, bend and loose connection
YES >> GO TO 2.
1. Disconnect the connector of combination meter.
2. Check the resistance between the combination meter harness connector terminals.
Combination meter harness connector

Resistance (Ω)
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M53 21 22 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the combination meter branch line.
Check the power supply and the ground circuit of the combination meter. Refer to MWI-68, "COMBINATION
METER : Diagnosis Procedure".
YES (Present error)>>Replace the combination meter. Refer to MWI-113, "Exploded View".
YES (Past error)>>Error was detected in the combination meter branch line.

STRG BRANCH LINE CIRCUIT
A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection C
YES >> GO TO 2. D
E
1. Disconnect the connector of steering angle sensor.
2. Check the resistance between the steering angle sensor harness connector terminals.
Steering angle sensor harness connector F

Resistance (Ω)
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M37 5 2 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the steering angle sensor branch line. H
Check the power supply and the ground circuit of the steering angle sensor. Refer to BRC-125, "Wiring Dia-
gram - BRAKE CONTROL SYSTEM - (GT-R certified NISSAN dealer)". I
YES (Present error)>>Replace the steering angle sensor. Refer to BRC-153, "Exploded View (GT-R certified
NISSAN dealer)". J
YES (Past error)>>Error was detected in the steering angle sensor branch line.
K
LAN

CGW BRANCH LINE CIRCUIT (CAN COMMUNICATION CIRCUIT 1)
1.CHECK DTC
Check DTC of the CAN gateway with CONSULT.
Is U1010 or B2600 indicated?
YES >> Perform a diagnosis of the indicated DTC.
NO >> GO TO 2.
2.CHECK CONNECTOR
3. Check the terminals and connectors of the CAN gateway for damage, bend and loose connection (unit
YES >> GO TO 3.
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1. Disconnect the connector of CAN gateway.
2. Check the resistance between the CAN gateway harness connector terminals.
CAN gateway harness connector

Resistance (Ω)
M125 1 7 Approx. 54 – 66
YES >> GO TO 4.
NO >> Repair the CAN gateway branch line (CAN communication circuit 1 side).
Check the power supply and the ground circuit of the CAN gateway. Refer to LAN-88, "Diagnosis Procedure".
YES (Present error)>>Replace the CAN gateway. Refer to LAN-89, "Removal and Installation".
YES (Past error)>>Error was detected in the CAN gateway branch line (CAN communication circuit 1 side).

DLC BRANCH LINE CIRCUIT
A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the data link connector for damage, bend and loose connection C
(connector side and harness side).
YES >> GO TO 2. D
E
Check the resistance between the data link connector terminals.
Data link connector

Resistance (Ω) F
M24 6 14 Approx. 54 – 66
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Is the measurement value within the specification? G
YES (Past error)>>Error was detected in the data link connector branch line circuit.
NO >> Repair the data link connector branch line. H
LAN

TPMS BRANCH LINE CIRCUIT
1.CHECK CONNECTOR
3. Check the terminals and connectors of the low tire pressure warning control unit for damage, bend and
loose connection (unit side and connector side).
YES >> GO TO 2.
1. Disconnect the connector of low tire pressure warning control unit.
2. Check the resistance between the low tire pressure warning control unit harness connector terminals.
Low tire pressure warning control unit harness connector

Resistance (Ω)
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M14 2 1 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the low tire pressure warning control unit branch line.
Check the power supply and the ground circuit of the low tire pressure warning control unit. Refer to WT-40,
"Diagnosis Procedure (GT-R certified NISSAN dealer)".
YES (Present error)>>Replace the low tire pressure warning control unit. Refer to WT-77, "Exploded View
(GT-R certified NISSAN dealer)".
YES (Past error)>>Error was detected in the low tire pressure warning control unit branch line.

TCM BRANCH LINE CIRCUIT
A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the TCM for damage, bend and loose connection (unit side and C
connector side).
YES >> GO TO 2. D
E
2. Check the resistance between the TCM harness connector terminals.
TCM harness connector F

Resistance (Ω)
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B45 11 15 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Replace the body harness. H
Check the power supply and the ground circuit of the TCM. Refer to TM-310, "Diagnosis Procedure (GT-R cer-
tified NISSAN dealer)". I
YES (Present error)>>Replace the TCM. Refer to TM-373, "Exploded View (GT-R certified NISSAN dealer)".
YES (Past error)>>Error was detected in the TCM branch line. J
LAN

TCU BRANCH LINE CIRCUIT
1.CHECK CONNECTOR
3. Check the terminals and connectors of the vehicle data transmitter for damage, bend and loose connec-
tion (unit side and connector side).
YES >> GO TO 2.
1. Disconnect the connector of vehicle data transmitter.
2. Check the resistance between the vehicle data transmitter harness connector terminals.
Vehicle data transmitter harness connector

Resistance (Ω)
cardiagn.com
B72 5 6 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the vehicle data transmitter branch line.
Check the power supply and the ground circuit of the vehicle data transmitter. Refer to AV-224, "VEHICLE
DATA TRANSMITTER : Diagnosis Procedure".
YES (Present error)>>Replace the vehicle data transmitter. Refer to AV-229, "Removal and Installation".
YES (Past error)>>Error was detected in the vehicle data transmitter branch line.

ABS BRANCH LINE CIRCUIT
A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend C
and loose connection (unit side and connector side).
YES >> GO TO 2. D
E
2. Check the resistance between the ABS actuator and electric unit (control unit) harness connector termi-
nals.
F
ABS actuator and electric unit (control unit) harness connector
Resistance (Ω)
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E41 30 15 Approx. 54 – 66
G

YES >> GO TO 3. H
NO >> Repair the ABS actuator and electric unit (control unit) branch line.
Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to I
BRC-110, "Diagnosis Procedure (GT-R certified NISSAN dealer)".
YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to BRC-150, "Exploded J
View (GT-R certified NISSAN dealer)".
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. K
LAN

IPDM-E BRANCH LINE CIRCUIT
1.CHECK CONNECTOR
3. Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side
and connector side).
YES >> GO TO 2.
1. Disconnect the connector of IPDM E/R.
2. Check the resistance between the IPDM E/R harness connector terminals.
IPDM E/R harness connector

Resistance (Ω)
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E6 40 39 Approx. 108 – 132
YES >> GO TO 3.
NO >> Repair the IPDM E/R branch line.
Check the power supply and the ground circuit of the IPDM E/R. Refer to PCS-19, "Diagnosis Procedure".
YES (Present error)>>Replace the IPDM E/R. Refer to PCS-35, "Exploded View".
YES (Past error)>>Error was detected in the IPDM E/R branch line.

CAN COMMUNICATION CIRCUIT
A
1.CONNECTOR INSPECTION B
3. Disconnect all the unit connectors on CAN communication system. C
4. Check terminals and connectors for damage, bend and loose connection.
YES >> GO TO 2. D
2.CHECK HARNESS CONTINUITY (SHORT CIRCUIT)
E
Check the continuity between the data link connector terminals.
Data link connector

Continuity F
M24 6 14 Not existed
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Is the inspection result normal? G
YES >> GO TO 3.
NO >> Check the harness and repair the root cause.
3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT) H
Check the continuity between the data link connector and the ground.
Data link connector I

Continuity
Ground
6 Not existed
M24 J
14 Not existed
YES >> GO TO 4. K
4.CHECK ECM AND IPDM E/R TERMINATION CIRCUIT L
1. Remove the ECM and the IPDM E/R.
2. Check the resistance between the ECM terminals.
LAN
ECM
Resistance (Ω)
Terminal No.
101 97 Approx. 108 – 132 N
3. Check the resistance between the IPDM E/R terminals.
IPDM E/R
O
Resistance (Ω)
Terminal No. LKIA0037E
40 39 Approx. 108 – 132 P

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.

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.
3. Disconnect one of the 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.
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CAN COMMUNICATION CIRCUIT 1
A
1.CONNECTOR INSPECTION B
3. Disconnect all the unit connectors on CAN communication circuit 1. C
YES >> GO TO 2. D
E
Data link connector

Continuity F
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Is the inspection result normal? G
YES >> GO TO 3.
3.CHECK HARNESS CONTINUITY (SHORT CIRCUIT) H
Data link connector I

Continuity
Ground
6 Not existed
M24 J
14 Not existed
YES >> GO TO 4. K
4.CHECK ECM AND IPDM E/R TERMINATION CIRCUIT L
LAN
ECM
Resistance (Ω)
Terminal No.
101 97 Approx. 108 – 132 N
IPDM E/R
O
Resistance (Ω)
40 39 Approx. 108 – 132 P

YES >> GO TO 5.
5.CHECK SYMPTOM

Inspection result
detected.
3. Disconnect one of the unit connectors of CAN communication circuit 1.
NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first.
NOTE:
Inspection result
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A
1.CHECK DTC B
C
NO >> GO TO 2.
2.CONNECTOR INSPECTION D
3. Check the terminals and connectors of the CAN gateway for damage, bend and loose connection (unit E
YES >> GO TO 3. F
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1. Disconnect the connector of CAN gateway. G
2. Check the continuity between the CAN gateway harness connector terminals.
CAN gateway harness connector H

Continuity
4 6 Existed
M125 I
10 12 Existed
YES >> GO TO 4. J
Check the power supply and the ground circuit of the CAN gateway. Refer to LAN-88, "Diagnosis Procedure". K
YES >> GO TO 5.
NO >> Repair the power supply and the ground circuit. L
5.CONNECTOR INSPECTION
1. Turn the ignition switch OFF. LAN
3. Disconnect all the unit connectors on CAN communication circuit 2.
N
YES >> GO TO 6.
O
Check the continuity between the CAN gateway harness connector terminals.
P
Continuity
YES >> GO TO 7.


Check the continuity between the CAN gateway harness connector and the ground.

Continuity
Ground
4 Not existed
M125
10 Not existed
YES >> GO TO 8.
8.CHECK CAN GATEWAY TERMINATION CIRCUIT
1. Remove the CAN gateway.
2. Check the resistance between the CAN gateway terminals.

Resistance (Ω)
Terminal No.
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4 10 Approx. 108 – 132
6 12 Approx. 108 – 132
YES >> GO TO 9.
NO >> Replace the CAN gateway.
9.CHECK SYMPTOM
Inspection result
detected.
NOTE:
CAN gateway has two termination circuits. Check other units first.
NOTE:
Inspection result

PRECAUTIONS
< PRECAUTION > [CAN GATEWAY]
PRECAUTION A
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT B
PRE-TENSIONER" INFOID:0000000011490093
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along C
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. D
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING: E
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
F
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
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Module, see “SRS AIR BAG”. G
• 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. H
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation. I
• 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 J
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.
K
Precaution for Battery Service INFOID:0000000011490094
Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
L
ence between the window edge and the vehicle when the door is opened/closed. During normal operation, the
window slightly raises and lowers automatically to prevent any window to vehicle interference. The automatic
window function will not work with the battery disconnected.
LAN
Precautions for Removing Battery Terminal INFOID:0000000011490095
• When removing the 12V battery terminal, turn OFF the ignition
switch and wait at least 30 seconds. N
NOTE:
ECU may be active for several tens of seconds after the ignition
switch is turned OFF. If the battery terminal is removed before ECU O
stops, then a DTC detection error or ECU data corruption may
occur.
• For vehicles with the 2-batteries, be sure to connect the main bat-
tery and the sub battery before turning ON the ignition switch. P
NOTE:
If the ignition switch is turned ON with any one of the terminals of
SEF289H
main battery and sub battery disconnected, then DTC may be
detected.
• After installing the 12V battery, always check "Self Diagnosis Result" of all ECUs and erase DTC.
NOTE:
The removal of 12V battery may cause a DTC detection error.

COMPONENT PARTS
< SYSTEM DESCRIPTION > [CAN GATEWAY]
SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts Location INFOID:0000000011490096
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JSMIA1914ZZ
1. CAN gateway
A. Behind the instrument lower panel
(driver)

SYSTEM
SYSTEM
A
System Description INFOID:0000000011490097
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G
JPMIA1132GB
J
• The CAN gateway system communicates between two CAN communication circuits.
• This system selects and transmits only necessary information.
K
LAN

DIAGNOSIS SYSTEM (CAN GATEWAY)
DIAGNOSIS SYSTEM (CAN GATEWAY)
CONSULT Function INFOID:0000000011490098
APPLICATION ITEM
CONSULT performs the following functions via CAN communication with CAN gateway.
Diagnosis mode Function Description

Ecu Identification The CAN gateway part number is displayed.
Self Diagnostic Result Displays the diagnosis results judged by CAN gateway.
CAN Diag Support Monitor The results of transmit/receive diagnosis of CAN communication can be read.
• Read and save the vehicle specification.
Configuration
• Write the vehicle specification when replacing CAN gateway.
SELF DIAGNOSTIC RESULT

Refer to LAN-79, "DTC Index".
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CAN GATEWAY
< ECU DIAGNOSIS INFORMATION > [CAN GATEWAY]
ECU DIAGNOSIS INFORMATION A

CAN GATEWAY
Reference Value INFOID:0000000011490099
B
TERMINAL LAYOUT
C
JSGIA0023ZZ
PHYSICAL VALUES F
Terminal No. Description
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(Wire color) Value
Input/ Condition
(Approx.)
G
Signal name
+ – Output
1 CAN-H (CAN commu- Input/
— — —
(L) nication circuit 1) Output H
3
Ground Battery power supply Input Ignition switch OFF Battery voltage
(W)
4 CAN-H (CAN commu- Input/ I
— — —
(L) nication circuit 2) Output
5
Ground Ground — Ignition switch ON 0V
(B) J
6 CAN-H (CAN commu- Input/
— — —
(L) nication circuit 2) Output
7
—
CAN-L (CAN commu- Input/
— —
K
(P) nication circuit 1) Output
9
Ground Ignition power supply Input Ignition switch ON Battery voltage
(R) L
10 CAN-L (CAN commu- Input/
— — —
11 LAN
Ground Ground — Ignition switch ON 0V
(B)
12 CAN-L (CAN commu- Input/
— — —
N
DTC Inspection Priority Chart INFOID:0000000011490100
If some DTCs are displayed at the same time, perform inspections one by one based on the following priority O
chart.
Priority DTC P
• B2600: CONFIG ERROR
1
• U1010: CONTROL UNIT(CAN)
2 U1000: CAN COMM CIRCUIT
DTC Index INFOID:0000000011490101
NOTE:

CAN GATEWAY
< ECU DIAGNOSIS INFORMATION > [CAN GATEWAY]
• The details of time display are as follows.
- CRNT: A malfunction is detected now
- PAST: A malfunction was detected in the past.
• IGN counter is displayed on FFD (Freeze Frame Data).
- The number is 0 when is detected now
- The number increases like 1 → 2 ··· 38 → 39 after returning to the normal condition whenever IGN OFF →
ON.
- The number is fixed to 39 until the self-diagnosis results are erased if it is over 39.
DTC Reference
No DTC is detected.
—
Further testing may be required.
U1000: CAN COMM CIRCUIT LAN-85
U1010: CONTROL UNIT(CAN) LAN-86
WRONG DATA
B2600: CONFIG ERROR LAN-87
NOT CONFIGURED
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CAN GATEWAY SYSTEM
< WIRING DIAGRAM > [CAN GATEWAY]
WIRING DIAGRAM A
CAN GATEWAY SYSTEM
Wiring Diagram INFOID:0000000011490102
B
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G
LAN
JRMWF7930GB

CAN GATEWAY SYSTEM
< WIRING DIAGRAM > [CAN GATEWAY]
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JRMWG8014GB

ADDITIONAL SERVICE WHEN REPLACING CAN GATEWAY
< BASIC INSPECTION > [CAN GATEWAY]
BASIC INSPECTION A
ADDITIONAL SERVICE WHEN REPLACING CAN GATEWAY
Description INFOID:0000000011490103
B
BEFORE REPLACEMENT
When replacing CAN gateway, save or print current vehicle specification with CONSULT configuration before C
replacement.
NOTE:
If “Before Replace ECU” of “Read / Write Configuration” can not be used, use the “Manual Configuration” after
replacing CAN gateway. D
AFTER REPLACEMENT
CAUTION:
E
Follow the instructions listed below. Failure to do this may cause malfunctions to the CAN gateway.:
• When replacing CAN gateway, you must perform “Read / Write Configuration” or “Manual Configura-
tion” with CONSULT.
• Complete the procedure of “Read / Write Configuration” or “Manual Configuration” in order. F
• If you set incorrect “Read / Write Configuration” or “Manual Configuration”, incidents might occur.
• Configuration is different for each vehicle model. Confirm configuration of each vehicle model.
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• Never perform “Read / Write Configuration” or “Manual Configuration” except for new CAN gateway.
G
Work Procedure INFOID:0000000011490104
1.SAVING VEHICLE SPECIFICATION H

CONSULT Configuration
Perform “Before Replace ECU” of “Read / Write Configuration” to save or print current vehicle specification.
Refer to LAN-84, "Description". I
NOTE:
If “Before Replace ECU” of “Read / Write Configuration” can not be used, use the “Manual Configuration” after
replacing CAN gateway. J
>> GO TO 2.
2.REPLACE CAN GATEWAY K
Replace CAN gateway. Refer to LAN-89, "Removal and Installation".

L
>> GO TO 3.
3.WRITING VEHICLE SPECIFICATION
LAN
Perform “After Replace ECU” of “Read / Write Configuration” or “Manual Configuration” to write vehicle speci-
fication. Refer to LAN-84, "Work Procedure".
N
>> WORK END

CONFIGURATION (CAN GATEWAY)
< BASIC INSPECTION > [CAN GATEWAY]
CONFIGURATION (CAN GATEWAY)
Vehicle specification needs to be written with CONSULT because it is not written after replacing CAN gateway.
Configuration has three functions as follows
Function Description
• Reads the vehicle configuration of current CAN gateway.
Before Replace ECU
Read / Write Configuration • Saves the read vehicle configuration.
After Replace ECU Writes the vehicle configuration with saved data.
Manual Configuration Writes the vehicle configuration with manual selection.
CAUTION:
Follow the instructions listed below. Failure to do this may cause malfunctions to the CAN gateway.:
• When replacing CAN gateway, you must perform “Read / Write Configuration” or “Manual Configura-
tion” with CONSULT.
• Complete the procedure of “Read / Write Configuration” or “Manual Configuration” in order.
• If you set incorrect “Read / Write Configuration” or “Manual Configuration”, incidents might occur.
• Configuration is different for each vehicle model. Confirm configuration of each vehicle model.
• Never perform “Read / Write Configuration” or “Manual Configuration” except for new CAN gateway.
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Work Procedure INFOID:0000000011490106
1.WRITING MODE SELECTION

Select “Re/programming, Configuration” of CAN gateway.
When writing saved data>>GO TO 2.

When writing manually>>GO TO 3.
2.PERFORM “AFTER REPLACE ECU” OF “READ / WRITE CONFIGURATION”
Perform “After Replace ECU” of “Read / Write Configuration”.
>> GO TO 4.
3.PERFORM “MANUAL CONFIGURATION”
1. Select “Manual Configuration”.
2. Touch “Next”.
3. Touch “OK”.
4. Check that the configuration has been successfully written and touch “End”.
>> GO TO 4.
4.CHECK ALL ECU SELF-DIAGNOSIS RESULTS
1. Erase all ECU self-diagnosis results using CONSULT.
3. Turn the ignition switch ON and wait for 2 seconds or more.
4. Check that all ECU self-diagnosis results have no DTC (e.g. U1000 and U1001) of CAN communication.
>> WORK END

< DTC/CIRCUIT DIAGNOSIS > [CAN GATEWAY]
DTC/CIRCUIT DIAGNOSIS A
B
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, and each control unit shares information and links with C
other control units during operation (not independent). In CAN communication, control units are connected
with two communication lines (CAN-H and CAN-L) allowing a high rate of information transmission with less
wiring. Each control unit transmits/receives data but selectively reads required data only. D
CAN Communication Signal Chart. Refer to LAN-24, "CAN Communication Signal Chart".
DTC Logic INFOID:0000000011490108
E
DTC DETECTION LOGIC
CONSULT display descrip- F

DTC DTC Detection Condition Possible cause
tion
When CAN gateway cannot communicate
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U1000 CAN COMM CIRCUIT CAN communication signal continuously for 2 CAN communication system G
seconds or more.

H
1.PERFORM SELF DIAGNOSTIC
1. Turn the ignition switch ON and wait for 2 seconds or more.
I
2. Check “Self Diagnostic Result”.
Is “U1000: CAN COMM CIRCUIT” displayed?
YES >> Refer to LAN-15, "Trouble Diagnosis Flow Chart". J
NO >> Refer to GI-39, "Intermittent Incident".
LAN

U1010 CONTROL UNIT (CAN)
U1010 CONTROL UNIT (CAN)
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Modern
vehicle is equipped with many electronic control unit, 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 and CAN-L) 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-24, "CAN Communication Signal Chart".
DTC DETECTION LOGIC
CONSULT display descrip-

DTC DTC Detection Condition Possible cause
tion
When an error is detected during the initial di-
U1010 CONTROL UNIT(CAN) CAN gateway
agnosis for CAN controller of CAN gateway.
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1.REPLACE CAN GATEWAY

When DTC “U1010: CONTROL UNIT(CAN)” is detected, replace CAN gateway.
>> Replace CAN gateway. Refer to LAN-89, "Removal and Installation".

B2600 CONFIG ERROR
B2600 CONFIG ERROR
A
The CAN gateway requires initial settings to judge necessary information, according to a vehicle specification. B
DTC DETECTION LOGIC C
CONSULT display descrip-

DTC DTC Detection Condition Probable cause
tion D
CONFIG ERROR When errors are detected in the configuration
WRONG DATA data stored in the CAN gateway.
B2600 CAN gateway
CONFIG ERROR E
When no data are stored in the CAN gateway.
NOT CONFIGURED

F
1.REPLACE CAN GATEWAY
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When DTC “B2600: CONFIG ERROR” is detected, replace CAN gateway. G
>> Replace CAN gateway. Refer to LAN-89, "Removal and Installation".

H
LAN

POWER SUPPLY AND GROUND CIRCUIT
POWER SUPPLY AND GROUND CIRCUIT
1.CHECK FUSE
Check that the following fuse are not blown.
Signal name Fuse No.

Battery power supply 6
Ignition power supply 3
Is the fuse fusing?
YES >> Replace the blown fuse after repairing the affected circuit if a fuse is blown.
NO >> GO TO 2.
2.CHECK POWER SUPPLY CIRCUIT
3. Check voltage between CAN gateway harness connector and ground.
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Terminals
Condition
(+) (−) Voltage
CAN gateway (Approx.)
Ignition
Connector Terminal switch
Ground Battery
3 OFF
voltage
M125
Battery
9 ON
voltage
Is the measurement value normal?
YES >> GO TO 3.
NO >> Repair harness or connector.
3.CHECK GROUND CIRCUIT
Check continuity between CAN gateway harness connector and ground.
CAN gateway
Continuity
Connector Terminal
Ground
5
M125 Existed
11
Does continuity exist?
YES >> INSPECTION END
NO >> Repair harness or connector.

CAN GATEWAY
< REMOVAL AND INSTALLATION > [CAN GATEWAY]
REMOVAL AND INSTALLATION A

CAN GATEWAY
Removal and Installation INFOID:0000000011490117
B
CAUTION:
Before replacing CAN gateway, perform “Before Replace ECU” of “Read / Write Configuration” to save
or print current vehicle specification. Refer to LAN-83, "Description". C
REMOVAL
1. Remove instrument lower panel (driver). Refer to IP-13, "Removal and Installation". D
2. Disconnect CAN gateway connector.
3. Remove mounting screw to remove CAN gateway.
INSTALLATION E
Install in the reverse order of removal.
CAUTION:
To prevent malfunction, be sure to perform “After Replace ECU” of “Read / Write Configuration” or F
“Manual Configuration” when replacing CAN gateway. Refer to LAN-83, "Description".
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G
LAN

< DTC/CIRCUIT DIAGNOSIS > [CAN SYSTEM (TYPE 1)]
1.CHECK CONNECTOR
and harness side).
YES >> GO TO 2.
2. Check the continuity between the harness connector terminals.
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62 70 Existed
B201
61 69 Existed
YES >> GO TO 3.

Continuity
70 91 Existed
M117 M122
69 90 Existed
YES (Present error)>>Connect all the connectors and diagnose again. Refer to LAN-15, "Trouble Diagnosis
Flow Chart".

A

- ECM
- BCM
- Combination meter
D

Continuity E
91 21 Existed
M122 M53
90 22 Existed F
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Flow Chart". G
H
LAN


- ECM
- Combination meter
harness connector.
Combination meter harness connector Steering angle sensor harness connector

Continuity
21 5 Existed
M53 M37
22 2 Existed
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Flow Chart".
angle sensor.
NO >> Repair the main line between the combination meter and the steering angle sensor.

A

- ECM
D
Continuity
E
5 6 Existed
M37 M24
2 14 Existed
Is the inspection result normal? F
Flow Chart".
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YES (Past error)>>Error was detected in the main line between the steering angle sensor and the data link G
connector.
H
LAN

1.CHECK CONNECTOR
and harness side).
YES >> GO TO 2.
2. Check the continuity between the data link connector and the harness connector.
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Continuity
6 70 Existed
M24 M7
14 69 Existed
YES >> GO TO 3.
NO >> Repair the main line between the data link connector and the harness connector M7.
2. Check the continuity between the harness connector and the TCM harness connector.

Continuity
70 11 Existed
B1 B45
69 15 Existed
Flow Chart".
YES (Past error)>>Error was detected in the main line between the data link connector and the TCM.

A
1.CHECK CONNECTOR B
and harness side).
D
YES >> GO TO 2.
- TCM F
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G
Continuity
11 1 Existed H
B45 B3
15 6 Existed
I
YES >> GO TO 3.
3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT) J
harness connector. K

Harness connector
L
1 30 Existed
E104 E41
6 15 Existed LAN
Flow Chart". N
NO >> Repair the main line between the harness connector E104 and the ABS actuator and electric unit O
(control unit).

1.CHECK CONNECTOR
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
- ECM
YES >> GO TO 2.
1. Disconnect the connector of ECM.
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ECM harness connector
Resistance (Ω)
M107 101 97 Approx. 108 – 132
YES >> GO TO 3.
tified NISSAN dealer)".
CONTROL UNIT : Special Repair Requirement (GT-R certified NISSAN dealer)".

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the AWD control unit for damage, bend and loose connection (unit C
YES >> GO TO 2. D
E
AWD control unit harness connector F

Resistance (Ω)
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B213 8 16 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the AWD control unit branch line. H
SAN dealer)". J
K
LAN

WARNING:
1.CHECK CONNECTOR
YES >> GO TO 2.
2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT
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A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and C
connector side).
YES >> GO TO 2. D
E
BCM harness connector F

Resistance (Ω)
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M122 91 90 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the BCM branch line. H
I
NO >> Repair the power supply and the ground circuit. J
LAN

1.CHECK CONNECTOR
3. Check the terminals and connectors of the E-SUS control unit for damage, bend and loose connection
YES >> GO TO 2.
E-SUS control unit harness connector

Resistance (Ω)
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M110 3 1 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the E-SUS control unit branch line.
SAN dealer)".

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the AV control unit for damage, bend and loose connection (unit C
YES >> GO TO 2. D
E
AV control unit harness connector F

Resistance (Ω)
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M203 90 74 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the AV control unit branch line. H
YES (Past error)>>Error was detected in the AV control unit branch line. J
LAN

1.CHECK CONNECTOR
3. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit
YES >> GO TO 2.
A/C auto amp. harness connector

Resistance (Ω)
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M66 1 2 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the A/C auto amp. branch line.
YES (Past error)>>Error was detected in the A/C auto amp. branch line.

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the combination meter for damage, bend and loose connection C
YES >> GO TO 2. D
E
Combination meter harness connector F

Resistance (Ω)
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M53 21 22 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the combination meter branch line. H
METER : Diagnosis Procedure". I
YES (Past error)>>Error was detected in the combination meter branch line. J
LAN

1.CHECK CONNECTOR
3. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection
YES >> GO TO 2.
Steering angle sensor harness connector

Resistance (Ω)
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M37 5 2 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the steering angle sensor branch line.
gram - BRAKE CONTROL SYSTEM - (GT-R certified NISSAN dealer)".
NISSAN dealer)".

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the data link connector for damage, bend and loose connection C
YES >> GO TO 2. D
E
Data link connector

Resistance (Ω) F
M24 6 14 Approx. 54 – 66
cardiagn.com
Is the measurement value within the specification? G
YES (Present error)>>Diagnose again. Refer to LAN-15, "Trouble Diagnosis Flow Chart".
NO >> Repair the data link connector branch line. H
LAN

1.CHECK CONNECTOR
3. Check the terminals and connectors of the low tire pressure warning control unit for damage, bend and
YES >> GO TO 2.
Low tire pressure warning control unit harness connector

Resistance (Ω)
cardiagn.com
M14 2 1 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the low tire pressure warning control unit branch line.
"Diagnosis Procedure (GT-R certified NISSAN dealer)".
(GT-R certified NISSAN dealer)".

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the TCM for damage, bend and loose connection (unit side and C
connector side).
YES >> GO TO 2. D
E
TCM harness connector F

Resistance (Ω)
cardiagn.com
B45 11 15 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Replace the body harness. H
Check the power supply and the ground circuit of the TCM. Refer to TM-310, "Description (GT-R certified NIS-
SAN dealer)". I
YES (Past error)>>Error was detected in the TCM branch line. J
LAN

1.CHECK CONNECTOR
3. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend
YES >> GO TO 2.
nals.

Resistance (Ω)
cardiagn.com
E41 30 15 Approx. 54 – 66
YES >> GO TO 3.
Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to
YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to BRC-150, "Exploded

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side C
YES >> GO TO 2. D
E
IPDM E/R harness connector F

Resistance (Ω)
cardiagn.com
E6 40 39 Approx. 108 – 132
G
YES >> GO TO 3.
NO >> Repair the IPDM E/R branch line. H
I
LAN

3. Disconnect all the unit connectors on CAN communication system.
YES >> GO TO 2.
Data link connector

Continuity
cardiagn.com
YES >> GO TO 3.
Data link connector

Continuity
Ground
6 Not existed
M24
14 Not existed
YES >> GO TO 4.
4.CHECK ECM AND IPDM E/R TERMINATION CIRCUIT
ECM
Resistance (Ω)
Terminal No.
101 97 Approx. 108 – 132
IPDM E/R
Resistance (Ω)
40 39 Approx. 108 – 132

YES >> GO TO 5.
5.CHECK SYMPTOM

Inspection result
Reproduced>>GO TO 6. A
detected.
6.CHECK UNIT REPRODUCTION B
2. Disconnect the battery cable from the negative terminal. C
3. Disconnect one of the unit connectors of CAN communication system.
NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first. D
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms. E
Inspection result
Non-reproduced>>Replace the unit whose connector was disconnected. F
cardiagn.com
G
LAN

1.CHECK CONNECTOR
and harness side).
YES >> GO TO 2.
2. Check the continuity between the harness connector terminals.
cardiagn.com
62 70 Existed
B201
61 69 Existed
YES >> GO TO 3.

Continuity
70 91 Existed
M117 M122
69 90 Existed
Flow Chart".

A

- ECM
- BCM
- Combination meter
D

Continuity E
91 21 Existed
M122 M53
90 22 Existed F
cardiagn.com
Flow Chart". G
H
LAN


- ECM
- Combination meter
harness connector.
Combination meter harness connector Steering angle sensor harness connector

Continuity
21 5 Existed
M53 M37
22 2 Existed
cardiagn.com
Flow Chart".
angle sensor.
NO >> Repair the main line between the combination meter and the steering angle sensor.

A

- ECM
D
Continuity
E
5 6 Existed
M37 M24
2 14 Existed
Is the inspection result normal? F
Flow Chart".
cardiagn.com
YES (Past error)>>Error was detected in the main line between the steering angle sensor and the data link G
connector.
H
LAN

1.CHECK CONNECTOR
and harness side).
YES >> GO TO 2.
2. Check the continuity between the data link connector and the harness connector.
cardiagn.com
Continuity
6 70 Existed
M24 M7
14 69 Existed
YES >> GO TO 3.
NO >> Repair the main line between the data link connector and the harness connector M7.
2. Check the continuity between the harness connector and the TCM harness connector.

Continuity
70 11 Existed
B1 B45
69 15 Existed
Flow Chart".
YES (Past error)>>Error was detected in the main line between the data link connector and the TCM.

A
1.CHECK CONNECTOR B
and harness side).
D
YES >> GO TO 2.
- TCM F
cardiagn.com
G
Continuity
11 1 Existed H
B45 B3
15 6 Existed
I
YES >> GO TO 3.
3.CHECK HARNESS CONTINUITY (OPEN CIRCUIT) J
harness connector. K

Harness connector
L
1 30 Existed
E104 E41
6 15 Existed LAN
Flow Chart". N
NO >> Repair the main line between the harness connector E104 and the ABS actuator and electric unit O
(control unit).

1.CHECK CONNECTOR
3. Check the following terminals and connectors for damage, bend and loose connection (unit side and con-
nector side).
- ECM
YES >> GO TO 2.
1. Disconnect the connector of ECM.
cardiagn.com
ECM harness connector
Resistance (Ω)
M107 101 97 Approx. 108 – 132
YES >> GO TO 3.
tified NISSAN dealer)".
CONTROL UNIT : Special Repair Requirement (GT-R certified NISSAN dealer)".

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the AWD control unit for damage, bend and loose connection (unit C
YES >> GO TO 2. D
E
AWD control unit harness connector F

Resistance (Ω)
cardiagn.com
B213 8 16 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the AWD control unit branch line. H
SAN dealer)". J
K
LAN

WARNING:
1.CHECK CONNECTOR
YES >> GO TO 2.
2.CHECK AIR BAG DIAGNOSIS SENSOR UNIT
cardiagn.com

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the BCM for damage, bend and loose connection (unit side and C
connector side).
YES >> GO TO 2. D
E
BCM harness connector F

Resistance (Ω)
cardiagn.com
M122 91 90 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the BCM branch line. H
I
LAN

1.CHECK CONNECTOR
3. Check the terminals and connectors of the E-SUS control unit for damage, bend and loose connection
YES >> GO TO 2.
E-SUS control unit harness connector

Resistance (Ω)
cardiagn.com
M110 3 1 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the E-SUS control unit branch line.
SAN dealer)".

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the AV control unit for damage, bend and loose connection (unit C
YES >> GO TO 2. D
E
AV control unit harness connector F

Resistance (Ω)
cardiagn.com
M203 90 74 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the AV control unit branch line. H
YES (Past error)>>Error was detected in the AV control unit branch line. J
LAN

1.CHECK CONNECTOR
3. Check the terminals and connectors of the A/C auto amp. for damage, bend and loose connection (unit
YES >> GO TO 2.
A/C auto amp. harness connector

Resistance (Ω)
cardiagn.com
M66 1 2 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the A/C auto amp. branch line.
YES (Past error)>>Error was detected in the A/C auto amp. branch line.

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the combination meter for damage, bend and loose connection C
YES >> GO TO 2. D
E
Combination meter harness connector F

Resistance (Ω)
cardiagn.com
M53 21 22 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the combination meter branch line. H
METER : Diagnosis Procedure". I
YES (Past error)>>Error was detected in the combination meter branch line. J
LAN

1.CHECK CONNECTOR
3. Check the terminals and connectors of the steering angle sensor for damage, bend and loose connection
YES >> GO TO 2.
Steering angle sensor harness connector

Resistance (Ω)
cardiagn.com
M37 5 2 Approx. 54 – 66
YES >> GO TO 3.
NO >> Repair the steering angle sensor branch line.
gram - BRAKE CONTROL SYSTEM - (GT-R certified NISSAN dealer)".
NISSAN dealer)".

A
1.CHECK DTC B
C
NO >> GO TO 2.
2.CHECK CONNECTOR D
3. Check the terminals and connectors of the CAN gateway for damage, bend and loose connection (unit E
YES >> GO TO 3. F
cardiagn.com
1. Disconnect the connector of CAN gateway. G
2. Check the resistance between the CAN gateway harness connector terminals.
CAN gateway harness connector H

Resistance (Ω)
M125 1 7 Approx. 54 – 66
I
YES >> GO TO 4.
NO >> Repair the CAN gateway branch line (CAN communication circuit 1 side).
J
Is the inspection result normal? K
YES (Present error)>>Replace the CAN gateway. Refer to LAN-89, "Removal and Installation".
YES (Past error)>>Error was detected in the CAN gateway branch line (CAN communication circuit 1 side).
NO >> Repair the power supply and the ground circuit. L
LAN

1.CHECK CONNECTOR
3. Check the terminals and connectors of the data link connector for damage, bend and loose connection
YES >> GO TO 2.
Data link connector

Resistance (Ω)
M24 6 14 Approx. 54 – 66
cardiagn.com
YES (Present error)>>Diagnose again. Refer to LAN-15, "Trouble Diagnosis Flow Chart".
NO >> Repair the data link connector branch line.

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the low tire pressure warning control unit for damage, bend and C
YES >> GO TO 2. D
E
Low tire pressure warning control unit harness connector F

Resistance (Ω)
cardiagn.com
M14 2 1 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the low tire pressure warning control unit branch line. H
"Diagnosis Procedure (GT-R certified NISSAN dealer)". I
(GT-R certified NISSAN dealer)". J
K
LAN

1.CHECK CONNECTOR
3. Check the terminals and connectors of the TCM for damage, bend and loose connection (unit side and
connector side).
YES >> GO TO 2.
TCM harness connector

Resistance (Ω)
cardiagn.com
B45 11 15 Approx. 54 – 66
YES >> GO TO 3.
NO >> Replace the body harness.
Check the power supply and the ground circuit of the TCM. Refer to TM-310, "Description (GT-R certified NIS-
SAN dealer)".
YES (Past error)>>Error was detected in the TCM branch line.

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the vehicle data transmitter for damage, bend and loose connec- C
tion (unit side and connector side).
YES >> GO TO 2. D
E
1. Disconnect the connector of vehicle data transmitter.
2. Check the resistance between the vehicle data transmitter harness connector terminals.
Vehicle data transmitter harness connector F

Resistance (Ω)
cardiagn.com
B72 5 6 Approx. 54 – 66
G
YES >> GO TO 3.
NO >> Repair the vehicle data transmitter branch line. H
Check the power supply and the ground circuit of the vehicle data transmitter. Refer to AV-224, "VEHICLE
DATA TRANSMITTER : Diagnosis Procedure". I
YES (Present error)>>Replace the vehicle data transmitter. Refer to AV-229, "Removal and Installation".
YES (Past error)>>Error was detected in the vehicle data transmitter branch line. J
LAN

1.CHECK CONNECTOR
3. Check the terminals and connectors of the ABS actuator and electric unit (control unit) for damage, bend
YES >> GO TO 2.
nals.

Resistance (Ω)
cardiagn.com
E41 30 15 Approx. 54 – 66
YES >> GO TO 3.
Check the power supply and the ground circuit of the ABS actuator and electric unit (control unit). Refer to
YES (Present error)>>Replace the ABS actuator and electric unit (control unit). Refer to BRC-150, "Exploded

A
1.CHECK CONNECTOR B
3. Check the terminals and connectors of the IPDM E/R for damage, bend and loose connection (unit side C
YES >> GO TO 2. D
E
IPDM E/R harness connector F

Resistance (Ω)
cardiagn.com
E6 40 39 Approx. 108 – 132
G
YES >> GO TO 3.
NO >> Repair the IPDM E/R branch line. H
I
LAN

YES >> GO TO 2.
Data link connector

Continuity
cardiagn.com
YES >> GO TO 3.
Data link connector

Continuity
Ground
6 Not existed
M24
14 Not existed
YES >> GO TO 4.
4.CHECK ECM AND IPDM E/R TERMINATION CIRCUIT
ECM
Resistance (Ω)
Terminal No.
101 97 Approx. 108 – 132
IPDM E/R
Resistance (Ω)
40 39 Approx. 108 – 132

YES >> GO TO 5.
5.CHECK SYMPTOM

Inspection result
Reproduced>>GO TO 6. A
detected.
6.CHECK UNIT REPRODUCTION B
2. Disconnect the battery cable from the negative terminal. C
NOTE:
ECM and IPDM E/R have a termination circuit. Check other units first. D
NOTE:
Although unit-related error symptoms occur, do not confuse them with other symptoms. E
Inspection result
Non-reproduced>>Replace the unit whose connector was disconnected. F
cardiagn.com
G
LAN

1.CHECK DTC
NO >> GO TO 2.
3. Check the terminals and connectors of the CAN gateway for damage, bend and loose connection (unit
YES >> GO TO 3.
cardiagn.com
2. Check the continuity between the CAN gateway harness connector terminals.

Continuity
4 6 Existed
M125
10 12 Existed
YES >> GO TO 4.
YES >> GO TO 5.
YES >> GO TO 6.
Check the continuity between the CAN gateway harness connector terminals.

Continuity
YES >> GO TO 7.

7.CHECK HARNESS CONTINUITY (SHORT CIRCUIT) A

Check the continuity between the CAN gateway harness connector and the ground.

Continuity B
Ground
4 Not existed
M125
10 Not existed C
YES >> GO TO 8.
NO >> Check the harness and repair the root cause. D
8.CHECK CAN GATEWAY TERMINATION CIRCUIT

1. Remove the CAN gateway. E
2. Check the resistance between the CAN gateway terminals.
CAN gateway harness connector F

Resistance (Ω)
Terminal No.
cardiagn.com
4 10 Approx. 108 – 132
G
6 12 Approx. 108 – 132
YES >> GO TO 9. H
NO >> Replace the CAN gateway.
9.CHECK SYMPTOM
Connect all the connectors. Check if the symptoms described in the “Symptom (Results from interview with I
Inspection result
Reproduced>>GO TO 10. J
detected.
10.CHECK UNIT REPRODUCTION K
L
NOTE:
CAN gateway has two termination circuits. Check other units first. LAN
NOTE: N
Inspection result
Reproduced>>Connect the connector. Check other units as per the above procedure. O

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ELECTRICAL & POWER CONTROL

SECTION LAN LAN SYSTEM

Revision: 2015 June LAN-1 GT-R

MAIN LINE BETWEEN TCM AND ABS CIR- PRECAUTION ............................................ 75

HVAC BRANCH LINE CIRCUIT ........................ 59 CAN GATEWAY ................................................ 79

Revision: 2015 June LAN-2 GT-R

CAN GATEWAY .................................................89 TCM BRANCH LINE CIRCUIT ........................ 107

Revision: 2015 June LAN-3 GT-R

Revision: 2015 June LAN-4 GT-R

Revision: 2015 June LAN-5 GT-R

Revision: 2015 June LAN-6 GT-R

Component System description

Revision: 2015 June LAN-7 GT-R

Name Harness Description

Revision: 2015 June LAN-8 GT-R

Unit name Symptom

Revision: 2015 June LAN-9 GT-R

Example: Data link connector branch line open circuit

Unit name Symptom

Error Difference of symptom

Revision: 2015 June LAN-10 GT-R

Unit name Symptom

Revision: 2015 June LAN-11 GT-R

Unit name Symptom

CAN Diagnosis with CONSULT INFOID:0000000011490046

CAN Diagnostic Support Monitor INFOID:0000000011490048

MONITOR ITEM (CONSULT)

Revision: 2015 June LAN-12 GT-R

Control unit name Unable to receive signals for 2 seconds or more.

Item PRESENT PAST Description

OK Normal at present, but unable to transmit signals for 2 seconds or more

Revision: 2015 June LAN-13 GT-R

How to Use CAN Communication Signal Chart

Revision: 2015 June LAN-14 GT-R

Revision: 2015 June LAN-15 GT-R

Revision: 2015 June LAN-16 GT-R

• CAN System Type Specification Chart (Style B)

Revision: 2015 June LAN-17 GT-R

Revision: 2015 June LAN-18 GT-R

Revision: 2015 June LAN-19 GT-R

HOW TO USE THIS MANUAL

• This section describes information peculiar to a vehicle and inspection procedures.

Abbreviation Unit name

Revision: 2015 June LAN-20 GT-R

Revision: 2015 June LAN-21 GT-R

Revision: 2015 June LAN-22 GT-R

Revision: 2015 June LAN-23 GT-R

Determine CAN system type from the following specification chart.

Body type Coupe

VEHICLE EQUIPMENT IDENTIFICATION INFORMATION

CAN Communication Signal Chart INFOID:0000000011490060

A/C compressor feedback signal T R

Engine and transmission integrated T R

Revision: 2015 June LAN-24 GT-R

Engine estimated torque signal T R

Engine status signal T R R R

Revision: 2015 June LAN-25 GT-R

Starter control relay signal T R

Revision: 2015 June LAN-26 GT-R