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K ELECTRICAL

                                                                                                                                                                   A




                                                      STARTING & CHARGING SYSTEM
                                                                                                  SECTION                     SC                                   B



                                                                                                                                                                   C



                                                                                                                                                                   D



                                                                                                                                                                   E
                                                                CONTENTS
PRECAUTIONS ......................................................... 2
                                                                      .            DIAGNOSTIC RESULT ITEM CHART ............... 18                        .        F
 Precautions for Supplemental Restraint System                                     WORK FLOW ..................................................... 19     .
 (SRS) "AIR BAG" and "SEAT BELT PRE-TEN-                                           DIAGNOSTIC PROCEDURE 1 .......................... 20                   .
 SIONER" ................................................................. 2
                                                                      .            DIAGNOSTIC PROCEDURE 2 .......................... 21                   .        G
 Precautions for Power Generation Variable Voltage                                 MINIMUM SPECIFICATION OF CRANKING
 Control System ........................................................ 2
                                                                      .            VOLTAGE REFERENCING COOLANT TEM-
PREPARATION .......................................................... 3
                                                                      .            PERATURE ........................................................ 22   .
                                                                                                                                                                   H
 Special Service Tool ................................................ 3
                                                                      .          Removal and Installation ....................................... 22      .
 Commerical Service Tools ....................................... 3   .            REMOVAL .......................................................... 22  .
BATTERY ................................................................... 4
                                                                      .            INSTALLATION .................................................. 23     .
 How to Handle Battery ............................................ 4 .         CHARGING SYSTEM .............................................. 24         .         I
   METHODS OF PREVENTING OVER-DIS-                                               System Description ................................................ 24   .
   CHARGE .............................................................. 4
                                                                      .            POWER GENERATION VARIABLE VOLTAGE
   CHECKING ELECTROLYTE LEVEL ................... 4                   .            CONTROL SYSTEM .......................................... 24           .        J
   SPECIFIC GRAVITY CHECK .............................. 5            .          Wiring Diagram -- CHARGE -- ............................ 26              .
   CHARGING THE BATTERY ................................ 6            .          Trouble Diagnoses with Battery/Starting/Charging
 Trouble Diagnoses with Battery/Starting/Charging                                System Tester ........................................................ 27.
                                                                                                                                                                   SC
 System Tester ......................................................... 6
                                                                      .            DIAGNOSTIC RESULT ITEM CHART ............... 28                        .
   DIAGNOSTIC RESULT ITEM CHART ................. 8                   .            WORK FLOW ..................................................... 29     .
 Removal and Installation ......................................... 9 .            PRELIMINARY INSPECTION ............................ 30                 .
   REMOVAL ............................................................ 9
                                                                      .            DIAGNOSTIC PROCEDURE 1 .......................... 30                   .        L
   INSTALLATION .................................................... 9.            DIAGNOSTIC PROCEDURE 2 .......................... 31                   .
STARTING SYSTEM ............................................... 10    .            DIAGNOSTIC PROCEDURE 3 .......................... 31                   .
 System Description ............................................... 10.            DIAGNOSTIC PROCEDURE 4 .......................... 32                   .        M
   A/T MODELS ..................................................... 10.          Power Generation Variable Voltage Control System
   M/T MODELS (USING IGNITION SWITCH) ...... 10                       .          Inspection .............................................................. 33
                                                                                                                                                          .
   M/T MODELS (USING CLUTCH INTERLOCK                                            Removal and Installation ....................................... 34      .
   CANCEL SWITCH) .............................................11     .            REMOVAL .......................................................... 34  .
 Wiring Diagram -- START -- ................................ 12       .            GENERATOR PULLEY INSPECTION ............... 35                         .
   A/T MODELS ..................................................... 12.            INSTALLATION .................................................. 35     .
 Schematic -- M/T Models -- ................................ 14       .         SERVICE DATA AND SPECIFICATIONS (SDS) ..... 36                            .
   M/T MODELS ..................................................... 15.          Battery ................................................................... 36
                                                                                                                                                          .
 Trouble Diagnoses with Battery/Starting/Charging                                Starter .................................................................... 36
                                                                                                                                                          .
 System Tester ....................................................... 18
                                                                      .          Generator .............................................................. 36
                                                                                                                                                          .




Revision: September 2005                                                   SC-1                                                                2006 Xterra
                                              PRECAUTIONS

PRECAUTIONS                                                         PFP:00001

Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER"                                                                                           EKS00D8I


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 and SB section of this Service Man-
ual.
WARNING:
G    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 per-
     formed by an authorized NISSAN/INFINITI dealer.
G    Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
     sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
     Bag Module, see the SRS section.
G    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 for Power Generation Variable Voltage Control System                                              EKS00D8J


CAUTION:
For this model, the battery current sensor that is installed to the negative battery cable measures the
charging/discharging current of the battery and performs various engine controls. If an electrical com-
ponent is connected directly to the negative battery terminal, the current flowing through that compo-
nent will not be measured by the battery current sensor. This condition may cause a malfunction of
the engine control system and battery discharge may occur. Do not connect an electrical component
or ground wire directly to the battery terminal.




Revision: September 2005                              SC-2                                              2006 Xterra
                                     PREPARATION

PREPARATION                                                                             PFP:00002
                                                                                                      A
Special Service Tool                                                                       EKS00D8L


  Tool number                                              Description
  (Kent-Moore No.)                                                                                    B
  Tool name
  J-44373 Model 620
  Battery/Starting/Charging system
                                                                                                      C
  tester



                                                                                                      D
                                                 SEL403X



                                                                                                      E



                                                                                                      F

Commerical Service Tools                                                                   EKS00D8M


  Tool number                                              Description                                G
  Tool name
  Power tool                                               Loosening bolts and nuts
                                                                                                      H



                                                                                                       I

                                               PBIC0190E


                                                                                                      J



                                                                                                      SC



                                                                                                      L



                                                                                                      M




Revision: September 2005                SC-3                                          2006 Xterra
                                                BATTERY

BATTERY                                                                                        PFP:AYBGL

How to Handle Battery                                                                               EKS00D8N


CAUTION:
G  If it becomes necessary to start the engine with a booster battery and jumper cables, use a 12-volt
   booster battery.
G  After connecting battery cables, ensure that they are tightly clamped to battery terminals for good
   contact.
G  Never add distilled water through the hole used to check specific gravity.
METHODS OF PREVENTING OVER-DISCHARGE
The following precautions must be taken to prevent over-discharging
a battery.
G   The battery surface (particularly its top) should always be kept
    clean and dry.
G   The terminal connections should be clean and tight.
G   At every routine maintenance, check the electrolyte level.
    This also applies to batteries designated as "low maintenance"
    and "maintenance-free".


                                                                                                 MEL040F




G   When the vehicle is not going to be used over a long period of
    time, disconnect the negative battery terminal.




                                                                                                 MEL041F




G   Check the charge condition of the battery.
    Periodically check the specific gravity of the electrolyte. Keep a
    close check on charge condition to prevent over-discharge.




                                                                                                 MEL042F


CHECKING ELECTROLYTE LEVEL
WARNING:
Do not allow battery fluid to come in contact with skin, eyes, fabrics, or painted surfaces. After touch-
ing a battery, do not touch or rub your eyes until you have thoroughly washed your hands. If acid con-
tacts eyes, skin or clothing, immediately flush with water for 15 minutes and seek medical attention.




Revision: September 2005                            SC-4                                      2006 Xterra
                                                        BATTERY

G     Remove the cell plug using a suitable tool.
G     Add distilled water up to the MAX level.                                                 A



                                                                                               B



                                                                                               C

                                                                                   MEL043F

                                                                                               D
Sulphation
A battery will be completely discharged if it is left unattended
for a long time and the specific gravity will become less than
1.100. This may result in sulphation on the cell plates.                                       E
To determine if a battery has been "sulphated", note its voltage
and current when charging it. As shown in the figure, less cur-
rent and higher voltage are observed in the initial stage of                                   F
charging sulphated batteries.
A sulphated battery may sometimes be brought back into ser-
vice by means of a long, slow charge, 12 hours or more, fol-
lowed by a battery capacity test.                                                              G

                                                                                   PKIA2353E


SPECIFIC GRAVITY CHECK                                                                         H
1.    Read hydrometer and thermometer indications at eye level.
2.    Use the following chart to correct your hydrometer reading
      according to electrolyte temperature.                                                     I


                                                                                               J



                                                                                               SC
                                                                                   MEL042FA


Hydrometer Temperature Correction
                                                                                               L
    Battery electrolyte temperature 



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