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>> Download SC documenatation <<Text preview - extract from the documentK ELECTRICAL
A
STARTING & CHARGING SYSTEM
SECTION SC B
C
D
E
CONTENTS
PRECAUTIONS ......................................................... 2
. MINIMUM SPECIFICATION OF CRANKING F
Precautions for Supplemental Restraint System VOLTAGE REFERENCING COOLANT TEM-
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- PERATURE ........................................................ 15 .
SIONER" ................................................................. 2
. Construction .......................................................... 15
. G
Wiring Diagrams and Trouble Diagnosis ................. 2 . Removal and Installation ....................................... 17 .
PREPARATION .......................................................... 3
. QG18DE ............................................................. 17.
Special Service Tool ................................................ 3
. QR25DE ............................................................. 18.
H
BATTERY ................................................................... 4
. Pinion/Clutch Check .............................................. 18 .
How to Handle Battery ............................................ 4 . CHARGING SYSTEM .............................................. 19 .
METHODS OF PREVENTING OVER-DIS- System Description ................................................ 19 .
CHARGE .............................................................. 4
. Wiring Diagram -- CHARGE -- ............................ 20 . I
CHECKING ELECTROLYTE LEVEL ................... 4 . Trouble Diagnoses with Starting/Charging System
SPECIFIC GRAVITY CHECK .............................. 5 . Tester (Charging) ................................................... 21 .
CHARGING THE BATTERY ................................ 6 . WORK FLOW ..................................................... 21 . J
Trouble Diagnoses with Battery Service Center ...... 6 . DIAGNOSTIC PROCEDURE 1 .......................... 22 .
STARTING SYSTEM ................................................. 7 . DIAGNOSTIC PROCEDURE 2 .......................... 23 .
System Description ................................................. 7
. DIAGNOSTIC PROCEDURE 3 .......................... 24 .
SC
M/T MODEL ......................................................... 7
. MALFUNCTION INDICATOR ............................. 25 .
A/T MODEL .......................................................... 7
. Construction .......................................................... 25
.
Wiring Diagram -- START -- .................................. 8 . Removal and Installation ....................................... 26 .
M/T MODEL ......................................................... 8
. QG18DE ............................................................. 26. L
A/T MODEL .......................................................... 9
. QR25DE ............................................................. 27.
Trouble Diagnoses with Starting/Charging System SERVICE DATA AND SPECIFICATIONS (SDS) ..... 28 .
Tester (Starting) ......................................................11
. Battery ................................................................... 28
. M
WORK FLOW ......................................................11 . Starter .................................................................... 28
.
DIAGNOSTIC PROCEDURE 1 .......................... 12 . Generator .............................................................. 28
.
DIAGNOSTIC PROCEDURE 2 .......................... 14 .
Revision: December 2006 SC-1 2006 Sentra
PRECAUTIONS
PRECAUTIONS PFP:00001
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS006EZ
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 SRS and SB section of
this Service Manual.
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.
Wiring Diagrams and Trouble Diagnosis EKS0037M
When you read wiring diagrams, refer to the following:
G GI-14, "How to Read Wiring Diagrams"
G PG-3, "POWER SUPPLY ROUTING" for power distribution circuit.
When you perform trouble diagnosis, refer to the following:
G GI-10, "HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSES".
G GI-26, "How to Perform Efficient Diagnosis for an Electrical Incident"
Revision: December 2006 SC-2 2006 Sentra
PREPARATION
PREPARATION PFP:00002
A
Special Service Tool EKS0037N
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number (Kent-Moore No.) B
Description
Tool name
(J-48087) Tests battery.
Battery Service Center For operating instructions, refer to Technical C
Service Bulletin and Battery Service Center
User Guide.
D
WKIA5280E
(J-44373) Model 620 Tests starting and charging systems. E
Starting/Charging system tester For operating instructions, refer to Technical
Service Bulletin.
F
G
SEL403X H
I
J
SC
L
M
Revision: December 2006 SC-3 2006 Sentra
BATTERY
BATTERY PFP:AYBGL
How to Handle Battery EKS0037O
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: December 2006 SC-4 2006 Sentra
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
SEL709E
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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