Nissan GT-R. Manual — part 190
LAN-8
< PRECAUTION >
[CAN]
PRECAUTIONS
PRECAUTION
PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
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The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SRS AIR BAG” and “SEAT BELT” of this
Service Manual.
WARNING:
Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution for Battery Service
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Before disconnecting the battery, lower both the driver and passenger windows. This will prevent any interfer-
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.
Precaution for Working Range at a Regular Dealership
INFOID:0000000009188120
CAUTION:
The service items unmentioned on this manual are recommended to be performed by a GT-R certified
NISSAN dealer. Because those service items require special equipment and a GT-R certified technical
staff who completed special training.
Precautions for Trouble Diagnosis
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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.
LAN
PRECAUTIONS
LAN-9
< PRECAUTION >
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Precautions for Harness Repair
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• Solder the repaired area and wrap tape around the soldered area.
NOTE:
A fray of twisted lines must be within 110 mm (4.33 in).
• Bypass connection is never allowed at the repaired area.
NOTE:
Bypass connection may cause CAN communication error. The
spliced wire becomes separated and the characteristics of twisted
line are lost.
• Replace the applicable harness as an assembly if error is detected on the shield lines of CAN communica-
tion line.
SKIB8766E
SKIB8767E
LAN-10
< BASIC INSPECTION >
[CAN]
DIAGNOSIS AND REPAIR WORKFLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Interview Sheet
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SKIB8898E
LAN
CAN COMMUNICATION SYSTEM
LAN-11
< SYSTEM DESCRIPTION >
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SYSTEM DESCRIPTION
CAN COMMUNICATION SYSTEM
CAN System Specification Chart
INFOID:0000000009163497
Determine CAN system type from the following specification chart.
CAN Communication Signal Chart
INFOID:0000000009163498
LAN-6, "How to Use CAN Communication Signal Chart"
for how to use CAN communication signal
chart.
NOTE:
Refer to
for the abbreviations of the connecting units.
T: Transmit
R: Receive
Body type
Coupe
Axle
AWD
Engine
VR38DETT
Transmission
Dual clutch transmission
Brake control
VDC
CAN system type
1
Signal name/Connecting unit
EC
M
4WD
BC
M
E-SUS
AV
HV
AC
M&A
ST
RG
TP
MS
TCM
ABS
IP
DM
-E
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 con-
trol signal
T
R
R
T
Engine coolant temperature signal
T
R
R
R
T
Engine estimated torque signal
T
R
Engine speed signal
T
R
R
R
R
R
Engine status signal
T
R
R
R
Fuel consumption monitor signal
T
R
R
T
Malfunctioning indicator lamp signal
T
R
Power generation command value signal
T
R
AWD clutch high temperature warning dis-
play signal
T
R
AWD signal
T
R
AWD system warning display signal
T
R
AWD warning lamp signal
T
R
Front/rear tire size discrepancy warning
display signal
T
R
Front torque distribution rate signal
T
R
R
T
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