Nissan Pathfinder (2008 year). Manual — part 421

    GI-56

    < BASIC INSPECTION >

    SERVICE INFORMATION FOR ELECTRICAL INCIDENT

    • When inspecting a ground connection follow these rules:
    - Remove the ground bolt or screw.
    - Inspect all mating surfaces for tarnish, dirt, rust, etc.
    - Clean as required to assure good contact.
    - Reinstall bolt or screw securely.
    - Inspect for “add-on” accessories which may be interfering with the ground circuit.
    - If several wires are crimped into one ground eyelet terminal, check for proper crimps. Make sure all of the

    wires are clean, securely fastened and providing a good ground path. If multiple wires are cased in one eye-
    let make sure no ground wires have excess wire insulation.

    • For detailed ground distribution information, refer to “Ground Distribution” in PG section.

    VOLTAGE DROP TESTS

    • Voltage drop tests are often used to find components or circuits which have excessive resistance. A voltage

    drop in a circuit is caused by a resistance when the circuit is in operation.

    • Check the wire in the illustration. When measuring resistance with DMM, contact by a single strand of wire

    will give reading of 0 ohms. This would indicate a good circuit. When the circuit operates, this single strand
    of wire is not able to carry the current. The single strand will have a high resistance to the current. This will
    be picked up as a slight voltage drop.

    • Unwanted resistance can be caused by many situations as follows:
    - Undersized wiring (single strand example)
    - Corrosion on switch contacts
    - Loose wire connections or splices.
    • If repairs are needed always use wire that is of the same or larger gauge.

    Measuring Voltage Drop — Accumulated Method

    • Connect the DMM across the connector or part of the circuit you want to check. The positive lead of the

    DMM should be closer to power and the negative lead closer to ground.

    • Operate the circuit.
    • The DMM will indicate how many volts are being used to “push” current through that part of the circuit.

    SGI853

    SERVICE INFORMATION FOR ELECTRICAL INCIDENT

    GI-57

    < BASIC INSPECTION >

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    Note in the illustration that there is an excessive 4.1 volt drop between the battery and the bulb.

    Measuring Voltage Drop — Steb-by-Step

    • The step-by-step method is most useful for isolating excessive drops in low voltage systems (such as those

    in “Computer Controlled Systems”).

    • Circuits in the “Computer Controlled System” operate on very low amperage.
    • The (Computer Controlled) system operations can be adversely affected by any variation in resistance in the

    system. Such resistance variation may be caused by poor connection, improper installation, improper wire
    gauge or corrosion.

    • The step by step voltage drop test can identify a component or wire with too much resistance.

    CONTROL UNIT CIRCUIT TEST

    System Description
    • When the switch is ON, the control unit lights up the lamp.

    CASE 1

    SGI974

    SAIA0258E

    MGI034A

    GI-58

    < BASIC INSPECTION >

    SERVICE INFORMATION FOR ELECTRICAL INCIDENT

    INPUT-OUTPUT VOLTAGE CHART

    • The voltage value is based on the body ground.

    • *: If high resistance exists in the switch side circuit (caused by a single strand), terminal 1 does not detect battery voltage. Control unit

    does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not supply power to light up the
    lamp.

    CASE 2

    INPUT-OUTPUT VOLTAGE CHART

    • The voltage value is based on the body ground.

    • *: If high resistance exists in the switch side circuit (caused by a single strand), terminal 2 does not detect approx. 0V. Control unit

    does not detect the switch is ON even if the switch does not turn ON. Therefore, the control unit does not control ground to light up the
    lamp.

    Terminal No.

    Description

    Condition

    Value (Approx.)

    In case of high resistance such as single
    strand (V) *

    +

    −

    Signal name

    Input/

    Output

    1

    Body
    ground

    Switch

    Input

    Switch ON

    Battery voltage

    Lower than battery voltage Approx. 8 (Ex-
    ample)

    Switch OFF

    0 V

    Approx. 0

    2

    Body
    ground

    Lamp

    Output

    Switch ON

    Battery voltage

    Approx. 0 (Inoperative lamp)

    Switch OFF

    0 V

    Approx. 0

    Terminal No.

    Description

    Condition

    Value (Approx.)

    In case of high resistance such as single
    strand (V) *

    +

    −

    Signal name

    Input/

    Output

    1

    Body
    ground

    Lamp

    Output

    Switch ON

    0V

    Battery voltage (Inoperative lamp)

    Switch OFF

    Battery voltage

    Battery voltage

    2

    Body
    ground

    Switch

    Input

    Switch ON

    0 V

    Higher than 0 Approx. 4 (Example)

    Switch OFF

    5 V

    Approx. 5

    MGI035A

    CONSULT-III CHECKING SYSTEM

    GI-59

    < BASIC INSPECTION >

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    CONSULT-III CHECKING SYSTEM

    Description

    INFOID:0000000001729591

    • When CONSULT-III is connected with a data link connector

    equipped on the vehicle side, it will communicate with the control
    unit equipped in the vehicle and then enable various kinds of diag-
    nostic tests.

    • Refer to “CONSULT-III Operation Manual” for more information.

    Function and System Application

    INFOID:0000000001729592

    1

    : Hood release handle

    2

    : Data link connector

    ALBIA0047ZZ

    Diagnostic test

    mode

    Function

    ENGINE

    T

    R

    ANSMI

    SSION

    AB

    S

    AI

    R BAG

    IPDM

    E/R

    BCM

    METER/

    M&A

    IN

    TELLIGENT KEY

    *1

    AUT

    O

    DR

    IVE

    POS.

    *2

    R

    E

    AR

    VIE

    W

    CAMERA

    *3

    MUL

    T

    I A

    V

    ALL MODE

    A

    W

    D/4WD

    *4

    HV

    A

    C

    NVIS (NA

    T

    S)

    NVIS (N

    A

    T

    S

    BCM OR S/ENT)

    NA

    TS I-KEY

    *1

    Work support

    This mode enables a technician to adjust some
    devices faster and more accurately by following
    the indications on CONSULT-III.

    x

    -

    x

    -

    -

    x

    -

    x

    x

    x

    -

    x

    -

    -

    -

    x

    Self-diagnostic

    Self-diagnostic can be performed quickly.

    -

    -

    -

    x

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    Self-diagnostic re-
    sults

    Self-diagnostic results can be read and erased
    quickly.

    x

    x

    x

    -

    x

    x

    x

    x

    x

    -

    x

    x

    x

    x

    x

    x

    Trouble diagnostic
    record

    Current self-diagnostic results and all trouble di-
    agnostic records previously stored can be read.

    -

    -

    -

    x

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    Data monitor

    Input/Output data in the ECM can be read.

    x

    x

    x

    -

    x

    -

    x

    x

    x

    x

    x

    x

    x

    -

    -

    -

    Data monitor (spec)

    Data monitor specification can be read.

    x

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    CAN diagnosis

    The condition of CAN communication can be indi-
    cated by a topology.

    x

    x

    x

    x

    x

    x

    x

    x

    x

    -

    x

    x

    x

    -

    -

    -

    CAN diagnosis sup-
    port monitor

    The communication condition of CAN communi-
    cation line can be read.

    x

    x

    x

    -

    x

    x

    x

    x

    x

    -

    x

    x

    x

    -

    -

    -

    Active test

    Diagnostic Test Mode in which CONSULT-III
    drives some actuators apart from the ECMs and
    also shifts some parameters in a specified range.

    x

    -

    x

    -

    x

    -

    -

    x

    x

    -

    -

    -

    -

    -

    -

    -

    Function test

    This mode can show results of self-diagnosis of
    ECU with either “OK” or “NG”. For engines, more
    practical tests regarding sensors/switches and/or
    actuators are available.

    x

    x

    x

    x

    -

    -

    -

    x

    -

    -

    -

    -

    -

    -

    -

    -

    DTC & SRT confir-
    mation

    The results of SRT (System Readiness Test) and
    the self-diagnosis status/result can be confirmed.

    x

    -

    -

    -

    -

    -

    -

    x

    -

    -

    -

    -

    -

    -

    -

    -

    DTC work support

    The operating condition to confirm Diagnosis
    Trouble Codes can be selected.

    x

    x

    -

    -

    -

    -

    -

    x

    -

    -

    -

    -

    -

    -

    -

    -

    ECM/ECU part num-
    ber

    ECM/ECU part number can be read.

    x

    x

    x

    -

    -

    x

    -

    x

    x

    x

    x

    x

    x

    -

    -

    -

    GI-60

    < BASIC INSPECTION >

    CONSULT-III CHECKING SYSTEM

    x : Applicable

    *1: With Intelligent Key

    *2:With automatic drive positioner

    *3: With rearview camera

    *4: With 4-wheel drive

    CONSULT-III Data Link Connector (DLC) Circuit

    INFOID:0000000001729593

    INSPECTION PROCEDURE

    If the CONSULT-III cannot diagnose the system properly, check the following items.

    NOTE:
    The CAN and DDL2 circuits from DLC pins 6, 7 and 14 may be connected to more than one system. A short in
    any circuit connected to a control unit in one system may affect CONSULT-III access to other systems.

    ECU discriminated
    No.

    Classification number of a replacement ECU can
    be read to prevent an incorrect ECU from being in-
    stalled.

    -

    -

    -

    x

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    Passenger Airbag

    Displays the STATUS (readiness) of the front pas-
    senger air bag.

    -

    -

    -

    x

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    AV COMM monitor

    The condition of AV communication can be indi-
    cated.

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    x

    -

    -

    -

    -

    -

    Configuration

    Sets control module parameters to match vehicle
    options.

    -

    -

    -

    -

    -

    x

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    Steering lock re-

    lease

    *1

    The condition of steering lock release solenoid.

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    x

    -

    PIN read

    This mode shows the BCM-specific 5-digit code.

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    x

    -

    Control unit
    initialization

    All registered ignition key IDs in NATS compo-
    nents can be initialized and new IDs can be regis-
    tered.

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    -

    x

    -

    -

    Diagnostic test

    mode

    Function

    ENGINE

    TRANSMISS

    ION

    ABS

    AIR B

    A

    G

    IPDM E/R

    BC

    M

    MET

    E

    R/M

    &

    A

    INT

    E

    LL

    IGENT KE

    Y

    *1

    AUT

    O

    DRIV

    E

    POS.

    *2

    REAR

    VIEW

    CAME

    R

    A

    *3

    MUL

    T

    I A

    V

    ALL MODE A

    W

    D/4WD

    *4

    HV

    AC

    NVIS (NA

    T

    S

    )

    N

    V

    IS (NA

    T

    S B

    C

    M OR S/

    ENT)

    NA

    TS I-K

    E

    Y

    *1

    Symptom

    Check item

    CONSULT-III cannot access
    any system.

    • CONSULT-III DLC power supply circuit (Terminal 8) and ground circuit (Terminal 4)

    CONSULT-III cannot access in-
    dividual system. (Other sys-
    tems can be accessed.)

    • Power supply and ground circuit for the control unit of the system (For detailed circuit, refer to wiring

    diagram for each system.)

    • Open or short circuit between the system and CONSULT-III DLC (For detailed circuit, refer to wiring

    diagram for each system.)

    • Open or short circuit CAN communication line. Refer to

    LAN-14, "Trouble Diagnosis Flow Chart"

    .

    CONSULT-III CHECKING SYSTEM

    GI-61

    < BASIC INSPECTION >

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    Wiring Diagram

    INFOID:0000000001729594

    ALAWA0006GB

    GW-2

    < PRECAUTION >

    PRECAUTIONS

    PRECAUTION

    PRECAUTIONS

    Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
    PRE-TENSIONER"

    INFOID:0000000001691364

    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.

    Handling for Adhesive and Primer

    INFOID:0000000001691365

    • Do not use an adhesive which is past its usable date. Shelf life of this product is limited to six months after

    the date of manufacture. Carefully adhere to the expiration or manufacture date printed on the box.

    • Keep primers and adhesive in a cool, dry place. Ideally, they should be stored in a refrigerator.
    • Open the seal of the primer and adhesive just before application. Discard the remainder.
    • Before application, be sure to shake the primer container to stir the contents. If any floating material is found,

    do not use it.

    • If any primer or adhesive contacts the skin, wipe it off with gasoline or equivalent and wash the skin with

    soap.

    • When using primer and adhesive, always observe the precautions in the instruction manual.

    Precaution for Procedure without Cowl Top Cover

    INFOID:0000000001730865

    When performing the procedure after removing cowl top cover, cover
    the lower end of windshield with urethane, etc.

    PIIB3706J

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    Текст

    Матвей Александрович29.05.2024 16:16
    Политика конфиденциальности