charging INFINITI FX35 2007 Workshop Manual

SC-4
PREPARATION
Revision: 2006 July 2007 FX35/FX45
PREPARATIONPFP:00002
Special Service ToolsNKS002UL
Commercial Service ToolsNKS002UM
Tool number
Tool name Description
J-44373 Model 620
Battery/Starting/Charging system
tester
SEL403X
Tool number
Tool name Description
Power tool Loosening bolts and nuts
PBIC0190E

BATTERY SC-5
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BATTERYPFP:AYBGL
How to Handle BatteryNKS002UN
CAUTION:

If it becomes necessary to start the engine with a booster battery and jumper cables, use a 12-volt
booster battery.

After connecting battery cables, ensure that they are tightly clamped to battery terminals for good
contact.
METHODS OF PREVENTING OVER-DISCHARGE
The following precautions must be taken to prevent over-discharging
a battery.

The battery surface (particularly its top) should always be kept
clean and dry.

The terminal connections should be clean and tight.

At every routine maintenance, check the electrolyte level.
This also applies to batteries designated as “low maintenance”
and “maintenance-free”.

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

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.
MEL040F
ELA0349D
MEL042F

SC-6
BATTERY
Revision: 2006 July 2007 FX35/FX45
CHECKING ELECTROLYTE LEVEL
WARNING:
Never allow battery fluid to come in contact with skin, eyes, fabrics, or painted surfaces. After touch-
ing a battery, never 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.

Remove the cell plug using a suitable tool.

Add distilled water up to the MAX level.
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.
SPECIFIC GRAVITY CHECK
1. Read hydrometer and thermometer indications at eye level.
2. Use the chart below to correct your hydrometer reading accord- ing to electrolyte temperature.
Hydrometer Temperature Correction
MEL043F
PKIA2353E
MEL042FA
Battery electrolyte temperature °C ( °F) Add to specific gravity reading
71 (160) 0.032
66 (150) 0.028
60 (140) 0.024
54 (130) 0.020
49 (120) 0.016 43 (110) 0.012
38 (100) 0.008 32 (90) 0.004
27 (80) 0
21 (70) −0.004

BATTERY SC-7
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Revision: 2006 July 2007 FX35/FX45
CHARGING THE BATTERY
CAUTION:

Never “quick charge” a fully discharged battery.

Keep the battery away from open flame while it is being charged.

When connecting the charger, connect the leads first, then turn on the charger. Never turn on the
charger first, as this may cause a spark.

If battery electrolyte temperature rises above 55 °C (131 °F), stop charging. Always charge battery
at a temperature below 55 °C (131 °F).
Charging Rates
Never charge at more than 50 ampere rate.
NOTE:
The ammeter reading on your battery charger will automatically decrease as the battery charges. This indi-
cates that the voltage of the battery is increasing normally as the state of charge improves. The charging amps
indicated above refer to initial charge rate.

If, after charging, the specific gravity of any two cells varies more than 0.050, the battery should be
replaced.
16 (60) −0.008
10 (50) −0.012
4 (40) −0.016
− 1 (30) −0.020
− 7 (20) −0.024
− 12 (10) −0.028
− 18 (0) −0.032
Corrected specific gravity Approximate charge condition 1.260 - 1.280 Fully charged
1.230 - 1.250 3/4 charged
1.200 - 1.220 1/2 charged
1.170 - 1.190 1/4 charged
1.140 - 1.160 Almost discharged 1.110 - 1.130 Completely discharged
Battery electrolyte temperature
°C ( °F) Add to specific gravity reading
Amp Time
50 1 hour
25 2 hours
10 5 hours 5 10 hours

SC-8
BATTERY
Revision: 2006 July 2007 FX35/FX45
Trouble Diagnosis with Battery/Starting/Charging System Tester (Battery)NKS002UO
CAUTION:
When working with batteries, always wear appropriate eye protection.
NOTE:

To ensure a complete and thorough diagnosis, the battery, starter and alternator test segments must be
done as a set from start to finish.

If battery surface charge is detected while testing, the tester will prompt you to turn on the headlamps to
remove the surface charge.

If necessary, the tester will prompt you to determine if the battery temperature is above or below 0 °C (32
° F). Choose the appropriate selection by pressing the up or down arrow button, then press “ENTER” to
make the selection.
1. Turn off all loads on the vehicle electrical system. Clean or repair as necessary.
2. Visually inspect the battery, battery terminals and cable ends with ignition switch in “OFF” position.
NOTE:
The contact surface between the battery terminals, cable ends
and tester leads must be clean for a valid test. A poor connec-
tion will prevent testing and a “CHECK CONNECTION” mes-
sage will appear during the test procedures. If this occurs, clean
the battery terminals, reconnect them and restart the test.
3. Connect the red tester lead clamp to the positive battery termi- nal, and the black to the negative terminal.
4. The tester will turn on automatically. Using the arrow keys, select “IN-VEHICLE” on the tester and then press the “ENTER”
key.
5. Locate the battery type and rating stamped or written on the
top case of the battery to be tested.
NOTE:
The battery rating will have either of the following.

CCA: Cold Cranking Amps (490 CCA, 550 CCA, etc.)

JIS: Japanese Industrial Standard.
When using the battery tester: Use the CCA rating only.

The tester requires the CCA rating for the battery be entered
exactly as it is written or stamped on the battery.

U.S. market : Refer to the latest “Battery Testing” Technical
Service Bulletin (TSB) for a chart which contains these ratings
listed by vehicle.

You must not use the JIS rating.
6. Using the arrow and “ENTER” keys alternately, select the battery type and rating. NOTE:
The tester lists five choices; CCA, JIS, IEC, DIN, and EN. Use only the CCA choice .
SEL404X
SEL405X
PKIC1310E

BATTERY SC-9
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7. Press “ENTER” to begin the test. Diagnosis results are dis-
played on the tester. Refer to SC-9, "
DIAGNOSTIC RESULT
ITEM CHART" .
8. Press “ENTER”, then test output code is displayed. Record the test output code on the repair order.
9. Toggle back to the “DIAGNOSTIC SCREEN” for test results. NOTE:

If necessary, the tester will ask the user to determine if the
battery has just been charged. Choose the appropriate selec-
tion by pressing the up or down arrow button and then press
the “ENTER” button to make the selection.

When testing a battery installed in a vehicle that has recently
been driven, select “BEFORE CHARGE”.

If the battery has just been slow charged due to a “CHARGE
& RETEST” decision by the tester, and the tester asks the user “BEFORE CHARGE/AFTER
CHARGE”, select “AFTER CHARGE”.
DIAGNOSTIC RESULT ITEM CHART
SEL407X
SEL576X
Diagnostic item Service procedure
GOOD BATTERY Battery is OK, go to “Trouble Diagnosis”, “STARTING SYSTEM”. Refer to
SC-14, "
Trouble Diagnosis with
Battery/Starting/Charging System Tester (Starting)" .
REPLACE BATTERY Replace battery.
Before replacing battery, clean the battery cable clamps and battery posts. Perform battery test again with
Battery/Starting/Charging system tester. If second test result is “Replace Battery”, then do so. Perform battery
test again to confirm repair.
BAD CELL-REPLACE Replace the battery. Perform battery test again with Battery/Starting/Charging system tester to confirm repair.
GOOD-RECHARGE Perform the slow battery charging procedure. (Initial rate of charge is 10A for 12 hours.)
CHARGE & RETEST Perform the slow battery charging. (Initial rate of charge is 10A for 12 hours.)
Perform battery test again with Battery/Starting/Charging system tester to confirm repair.
NOTE:
If the tester asks the user “BEFORE CHARGE/AFTER CHARGE”, select “AFTER CHARGE”.

SC-14
STARTING SYSTEM
Revision: 2006 July 2007 FX35/FX45
Trouble Diagnosis with Battery/Starting/Charging System Tester (Starting)NKS002US
NOTE:
To ensure a complete and thorough diagnosis, the battery, starter and alternator test segments must be done
as a set from start to finish.
1. Turn off all loads on the vehicle electrical system.
2. Perform battery test with Battery/Starting/Charging system tester. Refer to SC-8, "
Trouble Diagnosis with Battery/Starting/
Charging System Tester (Battery)" .
3. Press “ENTER” to begin the starting system test.
4. Start the engine.
5. Diagnostic result is displayed on the tester. Refer to SC-14,
"DIAGNOSTIC RESULT ITEM CHART" .
NOTE:

If the starter performs normally but the engine does not start,
perform engine diagnosis.

For intermittent “NO CRANK” or “NO STARTER OPERA-
TION” incidents, refer to SC-17, "
DIAGNOSTIC PROCE-
DURE 2" .
DIAGNOSTIC RESULT ITEM CHART
SEL408X
SEL409X
SEL410X
Diagnostic item Service procedure
CRANKING VOLTAGE NORMAL Go to SC-15, "
WORK FLOW" .
CRANKING VOLTAGE LOW
CHARGE BATTERY Perform the slow battery charging procedure. (Initial rate of charge is 10A for 12 hours.) Per-
form battery test again with Battery/Starting/Charging system tester. Refer to SC-8, "
Trouble
Diagnosis with Battery/Starting/Charging System Tester (Battery)" .
REPLACE BATTERY Before replacing battery, clean the battery cable clamps and battery posts. Perform battery
test again with Battery/Starting/Charging system tester. Refer to SC-8, "
Trouble Diagnosis
with Battery/Starting/Charging System Tester (Battery)" . If second test result is “REPLACE
BATTERY”, then do so. Perform battery test again to confirm repair.

STARTING SYSTEM SC-15
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Revision: 2006 July 2007 FX35/FX45
WORK FLOW
*1SC-8, "Trouble Diagnosis with Bat-
tery/Starting/Charging System Tester
(Battery)"
*2SC-17, "MINIMUM SPECIFICATION
OF CRANKING VOLTAGE REFER-
ENCING COOLANT TEMPERA-
TURE"
*3 SC-16, "Check “B” Terminal Circuit"
*4SC-17, "Check “S” Connector Cir-
cuit"
SKIB1369E

SC-24
CHARGING SYSTEM
Revision: 2006 July 2007 FX35/FX45
CHARGING SYSTEMPFP:23100
System DescriptionNKS002UV
The alternator provides DC voltage to operate the vehicle's electrical system and to keep the battery charged.
The voltage output is controlled by the IC regulator.
Power is supplied at all times

through 10A fuse (No. 33, located in the fuse and fusible link block)

to alternator terminal 4 (“S” terminal).
“B” Terminal supplies power to charge the battery and operate the vehicle's electrical system. Output voltage
is controlled by the IC regulator at terminal 4 (“S” terminal) detecting the input voltage.
The charging circuit is protected by the 120A fusible link (VK45DE and VQ35DE AWD).
The alternator is grounded to the engine block.
With the ignition switch in the ON or START position, power is supplied

through 10A fuse [No. 14, located in the fuse block (J/B)]

to combination meter terminal 7 for the charge warning lamp.
Ground is supplied

to combination meter terminal 2

through alternator terminal 3 (“L” terminal)

to alternator terminal 2 (“E” terminal) (VK45DE) or through case ground (VQ35DE)

through ground E304 (VK45DE).
With power and ground supplied, the charge warning lamp will illuminate. When the alternator is providing suf-
ficient voltage with the engine running, the ground is opened and the charge warning lamp will go off.
If the charge warning lamp illuminates with the engine running, a malfunction is indicated.
MALFUNCTION INDICATOR
The IC regulator warning function activates to illuminate charge warning lamp, if any of the following symp-
toms occur while alternator is operating:

Excessive voltage is produced.

No voltage is produced.

CHARGING SYSTEM SC-25
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Wiring Diagram — CHARGE —NKS002UW
VK45DE ENGINE MODELS
TKWM4287E