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STARTING & CHARGING SYSTEM

K ELECTRICAL

B
SECTION
STARTING & CHARGING SYSTEM C

E
CONTENTS
PRECAUTIONS ......................................................... 3 . DARK CURRENT INSPECTION ........................ 24 . F
Precautions for Supplemental Restraint System OPERATION PROCEDURE OF CURRENT
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- MEASUREMENT PROBE FOR CONSULT-II .... 25 .
SIONER" ................................................................. 3
. Trouble Diagnoses (K9K Engine Models) ............. 26 . G
Wiring Diagrams and Trouble Diagnosis ................. 3 . DIAGNOSIS PROCEDURE ............................... 26 .
PREPARATION .......................................................... 4 . PRE-DIAGNOSIS INSPECTION ........................ 26 .
Special Service Tools .............................................. 4 . DIAGNOSIS CHART BY SYMPTOM ................. 26 .
H
BATTERY ................................................................... 5
. INSPECTION FLOW BY CHARGE WARNING
How to Handle Battery ............................................ 5 . LAMP .................................................................. 26
.
METHODS OF PREVENTING OVER-DIS- CHARGE WARNING LAMP LINE INSPECTION 27 ...
CHARGE .............................................................. 5 . VOLTAGE DETECTION LINE AND CHARGE I
CHECKING ELECTROLYTE LEVEL ................... 5 . WARNING LAMP INSPECTION ........................ 28 .
SPECIFIC GRAVITY CHECK .............................. 6 . INSPECTION OF INSUFFICIENT ALTERNA-
Battery Test and Charging Chart ............................. 7 . TOR POWER GENERATION ............................. 30 . J
CHART I ............................................................... 7
. INSPECTION OF EXCESSIVE ALTERNATOR
CHART II .............................................................. 8
. POWER GENERATION ..................................... 30 .
A: SLOW CHARGE .............................................. 9 . DARK CURRENT INSPECTION ........................ 31 .
SC
B: STANDARD CHARGE ....................................11 . OPERATION PROCEDURE OF CURRENT
C: QUICK CHARGE ........................................... 12 . MEASUREMENT PROBE FOR CONSULT-II .... 33 .
Removal and Installation ....................................... 14 . Removal and Installation (CR Engine Models) ...... 34 .
CHARGING SYSTEM .............................................. 15 . REMOVAL .......................................................... 34
. L
System Description (CR Engine Models) .............. 15 . INSTALLATION .................................................. 34 .
System Description (K9K Engine Models) ............ 15 . Removal and Installation (K9K Engine Models) .... 35 .
Wiring Diagram -- CHARGE -- (CR Engine Mod- REMOVAL .......................................................... 35
. M
els) ........................................................................ 16
. INSTALLATION .................................................. 35 .
Wiring Diagram -- CHARGE -- (K9K Engine Mod- Disassembly .......................................................... 36
.
els) ........................................................................ 17
. REAR COVER .................................................... 36 .
Trouble Diagnoses (CR Engine Models) ............... 19 . REAR BEARING ................................................ 36 .
DIAGNOSIS PROCEDURE ............................... 19 . Inspection .............................................................. 36
.
PRE-DIAGNOSIS INSPECTION ........................ 19 . ROTOR CHECK ................................................. 36 .
DIAGNOSIS CHART BY SYMPTOM ................. 19 . BRUSH CHECK ................................................. 36 .
INSPECTION FLOW BY CHARGE WARNING STATOR CHECK ................................................ 37 .
LAMP ................................................................. 19
. Assembly ............................................................... 37
.
CHARGE WARNING LAMP LINE INSPECTION 20 ... RING FITTING IN REAR BEARING ................... 37 .
VOLTAGE DETECTION LINE AND CHARGE REAR COVER INSTALLATION .......................... 37 .
WARNING LAMP INSPECTION ........................ 21 . STARTING SYSTEM ................................................ 39 .
INSPECTION OF INSUFFICIENT ALTERNA- System Description ................................................ 39.
TOR POWER GENERATION ............................. 23 . M/T MODELS ..................................................... 39 .
INSPECTION OF EXCESSIVE ALTERNATOR A/T MODELS ...................................................... 39.
POWER GENERATION ..................................... 23 . Wiring Diagram -- START -- (CR Engine Models).. 40 .

SC-1
Wiring Diagram -- START -- (K9K Engine Models).. 42 . PINION/CLUTCH CHECK ..................................49 .
Trouble Diagnoses ................................................. 44. BRUSH CHECK ..................................................49 .
Removal and Installation (CR Engine Models) ...... 45 . YOKE CHECK ....................................................51 .
REMOVAL .......................................................... 45
. ARMATURE CHECK ..........................................51 .
INSTALLATION ................................................... 45 . Assembly ...............................................................52
.
Removal and Installation (K9K Engine Models) .... 45 . PINION PROTRUSION LENGTH ADJUST-
REMOVAL .......................................................... 45
. MENT ..................................................................52
.
INSTALLATION ................................................... 45 . SERVICE DATA AND SPECIFICATIONS (SDS) .....54 .
Disassembly and Assembly ................................... 46 . Battery ....................................................................54
.
Inspection .............................................................. 49
. Starter ....................................................................54
.
MAGNETIC SWITCH CHECK ............................ 49 . Alternator ...............................................................54
.

SC-2
PRECAUTIONS

PRECAUTIONS PFP:00011
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" EKS007Z9

The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
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. C
WARNING:
q 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. D
q 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. E
q 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. F
Wiring Diagrams and Trouble Diagnosis EKS007ZA

When you read wiring diagrams, refer to the followings: G
q GI-14, "How to Read Wiring Diagrams" in GI section
q PG-4, "POWER SUPPLY ROUTING" for power distribution circuit in PG section
When you perform trouble diagnosis, refer to the followings: H
q GI-10, "How to Follow Trouble Diagnoses" in GI section
q GI-24, "How to Perform Efficient Diagnosis for an Electrical Incident" in GI section
I

SC-3
PREPARATION

PREPARATION PFP:00002

Special Service Tools EKS007ZY

Tool name Description

CONSULT-II unit, and
Program card AED02E

PBIA3527J

CONSULT-II CONVERTER
System diagnose and inspection

PBIA3526J

Current measurement probe for
CONSULT-II
EG1187 1900

MKIA0065E

SC-4
BATTERY

BATTERY PFP:00011
A
How to Handle Battery EKS007ZB

CAUTION:
q If it becomes necessary to start the engine with a booster battery and jumper cables, use a 12-volt B
booster battery.
q After connecting battery cables, ensure that they are tightly clamped to battery terminals for good
contact. C
q 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. D
q The battery surface (particularly its top) should always be kept
clean and dry.
q The terminal connections should be clean and tight. E
q At every routine maintenance, check the electrolyte level.
This also applies to batteries designated as "low maintenance"
and "maintenance-free". F

G
MEL040F

H
q When the vehicle is not going to be used over a long period of
time, disconnect the negative battery terminal. (If the vehicle has
an extended storage switch, turn it off.)
I

SC
MEL041F

q Check the charge condition of the battery. L
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.

SC-5
BATTERY

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

MEL043F

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.
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
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.
SEL709E

SPECIFIC GRAVITY CHECK
1. Read hydrometer and thermometer indications at eye level.
2. Convert into specific gravity at 20

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