Nissan Quest E52. Instruction — part 275
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PRECAUTIONS
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< PRECAUTION >
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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
Instruction.
WARNING:
Always observe the following items for preventing accidental activation.
• To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in
the event of a collision that would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal
injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag
Module, see “SRS AIR BAG”.
• Never use electrical test equipment on any circuit related to the SRS unless instructed to in this Ser-
vice Instruction. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness
connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
Always observe the following items for preventing accidental activation.
• When working near the Air Bag Diagnosis Sensor Unit or other Air Bag System sensors with the
ignition ON or engine running, never use air or electric power tools or strike near the sensor(s) with
a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers, always switch the ignition OFF, disconnect the
battery, and wait at least 3 minutes before performing any service.
Precaution for Power Generation Voltage Variable Control System
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CAUTION:
For model with power generation voltage variable control system, the battery current sensor that is
installed to the battery cable at the negative terminal measures the charging/discharging current of
the battery, and performs various controls. If the electrical component or the ground wire is connected
directly to the battery terminal, the current other than that being measured with the battery current
sensor is charging to or discharging from the battery. This condition causes the malfunction of the
control, and then the battery discharge may occur. Do not connect the electrical component or the
ground wire directly to the battery terminal.
Precautions for Removing Battery Terminal
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• When removing the 12V battery terminal, turn OFF the ignition
switch and wait at least 30 seconds.
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
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.
NOTE:
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< PRECAUTION >
PRECAUTIONS
If the ignition switch is turned ON with any one of the terminals of main battery and sub battery discon-
nected, 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.
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PREPARATION
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< PREPARATION >
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PREPARATION
PREPARATION
Special Service Tools
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Commercial Service Tools
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Tool number
(Kent-Moore No.)
Tool name
Description
—
(—) Model GR8-1200 NI
Multitasking battery and electrical di-
agnostic station
Tests batteries, starting and charging sys-
tems and charges batteries.
For operating instructions, refer to diagnos-
tic station instruction instruction.
—
(—) Model EXP-800 NI
Battery and electrical diagnostic ana-
lyzer
Tests batteries and charging systems.
For operating instructions, refer to diagnos-
tic analyzer instruction instruction.
AWIIA1239ZZ
JSMIA0806ZZ
Tool name
Description
Power tool
Loosening bolts, nuts and screws
PIIB1407E
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< SYSTEM DESCRIPTION >
COMPONENT PARTS
SYSTEM DESCRIPTION
COMPONENT PARTS
CHARGING SYSTEM
CHARGING SYSTEM : Component Parts Location
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POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM
POWER GENERATION VOLTAGE VARIABLE CONTROL SYSTEM : Component
No.
Component part
Description
1.
Combination meter (Charge warning lamp)
The IC voltage regulator warning function activates to illuminate
the charge warning lamp, if any of the following symptoms occur
while alternator is operating:
• Excessive voltage is produced.
• No voltage is produced.
2.
Alternator
“B” terminal
Refer to
.
“S” terminal
Refer to
.
“L” terminal
Refer to
.
JMMIA0854ZZ
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