Nissan Note E12. Instruction — part 118
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< PRECAUTION >
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. Information necessary to service the system safely is included in the SR and SB section of
this Instruction.
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 Instruction. SRS wiring harnesses can be identified by yellow and/or orange harnesses or har-
ness 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 Igni-
tion 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.
COMPONENT PARTS
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< SYSTEM DESCRIPTION >
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SYSTEM DESCRIPTION
COMPONENT PARTS
Component Parts Location
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A.
Center of instrument panel
B.
Left side of instrument panel
C.
Back door lower finisher inside
ALLIA1294ZZ
No.
Component
Function
1.
BCM
• Operates the rear window defogger with the operation of rear window defogger switch.
• Performs the timer control of rear window defogger.
Refer to
BCS-4, "BODY CONTROL SYSTEM : Component Parts Location"
for detailed instal-
lation location.
2.
Rear window defogger
3.
Front air control (rear window
defogger switch)
• The rear window defogger switch is turned ON.
• Turns the indicator lamp ON when detecting the operation of rear window defogger.
4.
Rear window defogger relay
Operates the rear window defogger with the control signal from BCM.
5.
Condenser
Removes the noise that is generated when the rear window defogger turns ON/OFF.
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< SYSTEM DESCRIPTION >
COMPONENT PARTS
Rear window defogger
INFOID:0000000009499782
Heats the heating wire with the power supply from the rear window
defogger relay to prevent the rear window from fogging up.
JMLIA2595GB
SYSTEM
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< SYSTEM DESCRIPTION >
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SYSTEM
System Description
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SYSTEM DIAGRAM
Operation Description
• When rear window defogger switch is turned ON while ignition switch is ON, the front air control (rear win-
dow defogger switch) transmits rear window defogger switch signal to BCM.
• BCM turns rear window defogger relay ON when rear window defogger switch signal is received.
• Rear window defogger are supplied with power and operate when rear window defogger relay turns ON.
• Rear window defogger ON is displayed when front air control receives signals.
Timer function
• BCM turns rear window defogger relay ON for approximately 15 minutes when rear window defogger switch
is turned ON while ignition switch is ON. It makes rear window defogger operate.
• Timer is canceled after pressing rear window defogger switch again during timer operation. Then BCM turns
rear window defogger relay OFF. The same reaction also occurs during timer operation, if the ignition switch
is turned OFF.
INPUT/OUTPUT SIGNAL CHART
ALLIA1291GB
Switch
Input signal to BCM
BCM function
Actuator
Rear window defogger switch
Defogger switch signal
Rear window defogger control
Rear window defogger
Ignition switch
Ignition signal
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