2005 INFINITI FX35 charging

HARNESS PG-67
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Revision: 2005 July 2005 FX
Wiring Diagram Codes (Cell Codes) AKS007X0
Use the chart below to find out what each wiring diagram code stands for.
Refer to the wiring diagram code in the alphabetical index to find the location (page number) of each wiring
diagram.
Code Section Wiring Diagram Name
A/C ATC Air Conditioner
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASC/BS EC Automatic Speed Control Device (ASCD) Brake Switch
ASC/SW EC Automatic Speed Control Device (ASCD) Steering Switch
ASCBOF EC Automatic Speed Control Device (ASCD) Brake Switch
ASCIND EC Automatic Speed Control Device (ASCD) Indicator
AT/IND DI A/T Indicator Lamp
AUDIO AV Audio
AUT/DP SE Automatic Drive Positioner
AUTO/L LT Automatic Light System
AWD TF AWD Control System
B/CLOS BL Back Door Closure System
BACK/L LT Back-Up Lamp
BRK/SW EC Brake Switch
CAN AT CAN Communication Line
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
CIGAR WW Cigarette Lighter
CLOCK DI Clock
COMBSW LT Combination Switch
COMM AV Audio Visual Communication Line
COMPAS DI Compass
COOL/F EC Cooling Fan Control
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
DTRL LT Headlamp - With Daytime Light System
ECM/PW EC ECM Power Supply for Back-Up
ECTS EC Engine Coolant Temperature Sensor
ETC1 EC Electric Throttle Control Function
ETC2 EC Electric Throttle Control Motor Relay
ETC3 EC Electric Throttle Control Motor
F/FOG LT Front Fog Lamp
F/PUMP EC Fuel Pump
FTS AT A/T Fluid Temperature Sensor Circuit
FTTS EC Fuel Tank Temperature Sensor
FUELB1 EC Fuel Injection System Function (Bank 1)
FUELB2 EC Fuel Injection System Function (Bank 2)

SC-1
STARTING & CHARGING SYSTEM
K ELECTRICAL
CONTENTS
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STARTING & CHARGING SYSTEM
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 2
PREPARATION ...................................................... ..... 3
Special Service Tools .......................................... ..... 3
Commercial Service Tools ................................... ..... 3
BATTERY ............................................................... ..... 4
How to Handle Battery ........................................ ..... 4
METHODS OF PREVENTING OVER-DIS-
CHARGE .......................................................... ..... 4
CHECKING ELECTROLYTE LEVEL ............... ..... 5
SPECIFIC GRAVITY CHECK .......................... ..... 5
CHARGING THE BATTERY ............................ ..... 6
Trouble Diagnosis with Battery/Starting/Charging
System Tester (Battery) ....................................... ..... 6
DIAGNOSTIC RESULT ITEM CHART ............. ..... 8
Removal and Installation ..................................... ..... 9
REMOVAL ........................................................ ..... 9
INSTALLATION ................................................ ..... 9
STARTING SYSTEM ............................................. ... 10
System Description ............................................. ... 10
Wiring Diagram — START — .............................. .... 11
VK45DE ENGINE MODELS ............................ .... 11
VQ35DE ENGINE MODELS ............................ ... 12
Trouble Diagnosis with Battery/Starting/Charging
System Tester (Starting) ...................................... ... 13
DIAGNOSTIC RESULT ITEM CHART ............. ... 13
WORK FLOW ................................................... ... 14
DIAGNOSTIC PROCEDURE 1 ........................ ... 15
DIAGNOSTIC PROCEDURE 2 ........................ ... 16
MINIMUM SPECIFICATION OF CRANKING
VOLTAGE REFERENCING COOLANT TEM-
PERATURE ...................................................... ... 16 Removal and Installation .....................................
... 17
VK45DE ENGINE MODELS ............................. ... 17
VQ35DE ENGINE MODELS (2WD) ................. ... 18
VQ35DE ENGINE MODELS (AWD) ................. ... 19
Disassembly and Assembly ................................. ... 20
VK45DE ENGINE MODELS ............................. ... 20
VQ35DE ENGINE MODELS (2WD) ................. ... 21
VQ35DE ENGINE MODELS (AWD) ................. ... 22
INSPECTION AFTER DISASSEMBLY ............. ... 22
CHARGING SYSTEM ............................................ ... 23
System Description .............................................. ... 23
MALFUNCTION INDICATOR ........................... ... 23
Wiring Diagram — CHARGE — .......................... ... 24
VK45DE ENGINE MODELS ............................. ... 24
VQ35DE ENGINE MODELS ............................ ... 25
Trouble Diagnosis with Battery/Starting/Charging
System Tester (Charging) .................................... ... 26
DIAGNOSTIC RESULT ITEM CHART ............. ... 27
WORK FLOW ................................................... ... 28
PRELIMINARY INSPECTION .......................... ... 29
DIAGNOSTIC PROCEDURE 1 ........................ ... 30
DIAGNOSTIC PROCEDURE 2 ........................ ... 31
DIAGNOSTIC PROCEDURE 3 ........................ ... 31
DIAGNOSTIC PROCEDURE 4 ........................ ... 32
Removal and Installation ..................................... ... 33
VK45DE ENGINE MODELS ............................. ... 33
VQ35DE ENGINE MODELS ............................ ... 34
Disassembly and Assembly ................................. ... 36
VK45DE ENGINE MODELS ............................. ... 36
VQ35DE ENGINE MODELS ............................ ... 37
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 38
Battery ................................................................. ... 38
Starter .................................................................. ... 38
Alternator ............................................................. ... 38

PREPARATION SC-3
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PREPARATIONPFP:00002
Special Service ToolsAKS00797
Commercial Service ToolsAKS00798
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

SC-4
BATTERY
Revision: 2005 July 2005 FX
BATTERYPFP:AYBGL
How to Handle BatteryAKS00799
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

BATTERY SC-5
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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

SC-6
BATTERY
Revision: 2005 July 2005 FX
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.
Trouble Diagnosis with Battery/Starting/Charging System Tester (Battery)AKS0079A
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.
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: 2005 July 2005 FX
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
SEL576X
Diagnostic item Service procedure
GOOD BATTERY Battery is OK, go to “Trouble Diagnosis”, “STARTING SYSTEM”. Refer to
SC-13, "
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”.

STARTING SYSTEM SC-13
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Trouble Diagnosis with Battery/Starting/Charging System Tester (Starting)AKS0079E
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-6, "
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-13,
"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-16, "
DIAGNOSTIC PROCE-
DURE 2" .
DIAGNOSTIC RESULT ITEM CHART
SEL408X
SEL409X
SEL410X
Diagnostic item Service procedure
CRANKING VOLTAGE NORMAL Go to SC-14, "
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-6, "
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-6, "
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.