Nissan Frontier D40. Manual - part 682

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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. 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 SR and SB section of this Service Man-
ual.

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 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 3 minutes before performing any service.

General Precaution

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WARNING:

When replacing fuel line parts, be sure to observe the following.
• Put a “CAUTION: FLAMMABLE” sign in the workshop.
• Be sure to work in a well ventilated area and furnish the workshop with a CO

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 fire extinguisher. 

• Do not smoke while servicing the fuel system. Keep open flames and sparks away from the work

area.

CAUTION:

• Before removing fuel line parts, carry out the following procedures:
- Put drained fuel in an explosion-proof container and put the lid on securely. Keep the container in

safe area.

- Release fuel pressure from the fuel lines. Refer to 

EC-454, "Fuel Pressure Check"

 (QR25DE), 

EC-954,

"Fuel Pressure Check"

 (VQ40DE).

- Disconnect the battery negative terminal. 
• Always replace O-rings and clamps with new ones.
• Do not kink or twist hoses when they are being installed.
• Do not tighten hose clamps excessively to avoid damaging hoses. 
• Tighten high-pressure rubber hose clamp so that clamp end is 3 mm (0.12 in) from hose end.
• Ensure that clamp screw does not contact adjacent parts.

PRECAUTIONS

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• After connecting the fuel tube quick connectors, make sure

the quick connectors are secure.
Ensure that the connector and resin tube do not contact any
adjacent parts.

• After installing tubes, make sure there is no fuel leakage at

connections in the following steps.

- Apply fuel pressure to fuel lines with turning ignition switch

ON (with engine stopped). Then check for fuel leaks at con-
nections.

- Start the engine and rev it up and check for fuel leaks at con-

nections.

• Use only a Genuine NISSAN fuel filler cap as a replacement. If

an incorrect fuel filler cap is used, the MIL may come on. 

• For servicing “Evaporative Emission System” parts, refer to

EC-459, "Removal and Installation"

 (QR25DE), 

EC-957,

"Removal and Installation"

 (VQ40DE).

• For servicing “On Board Refueling Vapor Recovery (ORVR)”

parts, refer to 

EC-457, "How to Detect Fuel Vapor Leakage"

(QR25DE), 

EC-956, "How to Detect Fuel Vapor Leakage"

(VQ40DE).

PBIC1268E

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< PREPARATION >

PREPARATION

PREPARATION

PREPARATION

Special Service Tool

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The actual shapes of the Kent-Moore tools may differ from those of the special tools illustrated here.

Commercial Service Tool

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Tool number
(Kent-Moore No.)
Tool name

Description

—

(J-45722)
130 mm lock ring tool

Removing and installing fuel tank lock ring

LBIA0398E

Tool name

Description

Power tool

Loosening bolts and nuts

PBIC0190E

FUEL SYSTEM

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< ON-VEHICLE MAINTENANCE >

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ON-VEHICLE MAINTENANCE

FUEL SYSTEM

Checking Fuel Line

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Inspect fuel lines, fuel filler cap and fuel tank for improper attach-
ment, leaks, cracks, damage, loose connections, chafing or deterio-
ration.
If necessary, repair or replace damaged parts.

SMA803A