Nissan Sentra Service Manual: Precaution
Precaution for supplemental restraint system (srs) "air bag" and "seat
belt pre-tensioner"
The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”,
used along
with a front seat belt, helps to reduce the risk or severity of injury to the
driver and front passenger for certain
types of collision. Information necessary to service the system safely is
included in the SR and SB section of
this Service Manual.
Warning:
- To avoid rendering the srs inoperative, which could increase
the risk of personal injury or death in
the event of a collision which 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 the sr section.
- Do not use electrical test equipment on any circuit related to
the srs unless instructed to in this
service 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:
- When working near the airbag diagnosis sensor unit or other
airbag system sensors with the ignition
on or engine running, do not 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 three minutes before performing any service.
Precautions for trouble diagnosis
Caution:
Follow the instructions listed below. Failure to do this may cause damage
to parts:
- 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
- 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 communication
line.
How to use this section
Information
“Can” of lan section describes information peculiar to a vehicle and
inspection procedures.
For trouble diagnosis procedure, refer to lan-16, &q ...
Component parts
Component parts location
ABS actuator and electric unit (control
unit)
Av control unit
A/c auto amp.
Ecm
Ipdm e/r
Tcm
Data link connector
EPS control unit
Bc ...
Other materials:
Ecu diagnosis information
Bcm
Reference value
NOTE:
The Signal Tech II Tool (J-50190) can be used to perform the following
functions. Refer to the Signal Tech II
User Guide for additional information.
Activate and display TPMS transmitter IDs
Display tire pressure reported by the TPMS transmitter
Read TPMS DTC ...
NISSAN vehicle immobilizer system
The NISSAN Vehicle Immobilizer system will not
allow the engine to start without the use of the
registered key.
If the engine fails to start using a registered key
(for example, when interference is caused by
another registered key, an automated toll road
device or automatic payment device o ...
Air conditioner operation (if so equipped)
Start the engine, turn the fan control dial to the
desired position, and press the
button to
activate the air conditioner. When the air conditioner
is on, cooling and dehumidifying functions
are added to the heater operation.
The air conditioner cooling function operates
only whe ...
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