charging INFINITI QX56 2006 Factory Owner's Guide

PG-62
HARNESS
Revision: November 20092006 QX56
Wiring Diagram Codes (Cell Codes)EKS00BNE
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.
CodeSection Wiring Diagram Name
A/C,A ATC Auto Air Conditioner
A/SUSP RSU Rear Air Suspension
AF1B1 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 1)
AF1B2 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 2)
AF1HB1 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 1)
AF1HB2 EC Air Fuel Ratio (A/F) Sensor 1 (Bank 2)
APPS1 EC Accelerator Pedal Position Sensor
APPS2 EC Accelerator Pedal Position Sensor
APPS3 EC Accelerator Pedal Position Sensor
ASC/BS EC ASCD Brake Switch
ASC/SW EC ASCD Steering Switch
ASCBOF EC ASCD Brake Switch
ASCIND EC ASCD Indicator
A/T AT A/T Assembly
AT/IND DI A/T Indicator Lamp
AUDIO AV Audio
AUT/DP SE Automatic Drive Positioner
AUTO/L LT Auto Light Control
B/CLOS BL Back Door Auto Closure System
BACK/L LT Back-up Lamp
BRK/SW EC Brake Switch
CAN EC CAN Communication Line
CAN LAN CAN System
CHARGE SC Charging System
CHIME DI Warning Chime
CLOCK DI Clock
COOL/F EC Cooling Fan Control
COMBSW LT Combination Switch
COMM AV Audio Visual Communication System
COMPAS DI Compass and Thermometer
D/LOCK BL Power Door Lock
DEF GW Rear Window Defogger
DTRL LT Headlamp - With Daytime Light System
DVD AV DVD Entertainment System
ECM/PW EC ECM Power Supply for Back-Up
ECTS EC Engine Coolant Temperature Sensor
ETC1 EC Electric Throttle Control Function
ETC2 EC Throttle Control Motor Relay
ETC3 EC Throttle Control Motor
F/FOG LT Front Fog Lamp
F/PUMP EC Fuel Pump
FTTS EC Fuel Tank Temperature Sensor
FUELB1 EC Fuel Injection System Bank 1
FUELB2 EC Fuel Injection System Bank 2
H/AIM LT Headlamp Aiming Control
H/PHON AV Hands Free Telephone
H/LAMP LT Headlamp

SC-1
STARTING & CHARGING SYSTEM
K ELECTRICAL
CONTENTS
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SECTION
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PRECAUTIONS .....................................................
..... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 2
PREPARATION ...................................................... ..... 3
Special Service Tool ............................................ ..... 3
Commercial Service Tools ................................... ..... 3
BATTERY ............................................................... ..... 4
How to Handle Battery ............................................. 4 METHODS OF PREVENTING OVER-DIS-
CHARGE .......................................................... ..... 4
CHECKING ELECTROLYTE LEVEL ............... ..... 4
SPECIFIC GRAVITY CHECK .......................... ..... 5
CHARGING THE BATTERY ............................ ..... 6
Trouble Diagnoses with Battery/Starting/Charging
System Tester ..................................................... ..... 6
DIAGNOSTIC RESULT ITEM CHART ............. ..... 8
Removal and Installation ..................................... ..... 9
REMOVAL ........................................................ ..... 9
INSTALLATION ................................................ ..... 9
STARTING SYSTEM ............................................. ... 10
System Description ............................................. ... 10
Wiring Diagram — START — .............................. .... 11
Trouble Diagnoses with Battery/Starting/Charging
System Tester ..................................................... ... 12
DIAGNOSTIC RESULT ITEM CHART ............. ... 12
WORK FLOW ................................................... ... 13DIAGNOSTIC PROCEDURE 1 ........................
... 14
DIAGNOSTIC PROCEDURE 2 ........................ ... 15
MINIMUM SPECIFICATION OF CRANKING
VOLTAGE REFERENCING COOLANT TEM-
PERATURE ...................................................... ... 16
Removal and Installation ..................................... ... 16
REMOVAL ........................................................ ... 16
INSTALLATION ................................................ ... 16
CHARGING SYSTEM ............................................ ... 17
System Description .............................................. ... 17
Wiring Diagram — CHARGE — .......................... ... 18
Trouble Diagnoses with Battery/Starting/Charging
System Tester ...................................................... ... 19
DIAGNOSTIC RESULT ITEM CHART ............. ... 20
WORK FLOW ................................................... ... 21
DIAGNOSTIC PROCEDURE 1 ........................ ... 22
DIAGNOSTIC PROCEDURE 2 ........................ ... 23
DIAGNOSTIC PROCEDURE 3 ........................ ... 24
MALFUNCTION INDICATOR ........................... ... 25
Removal and Installation ..................................... ... 25
REMOVAL ........................................................ ... 25
INSTALLATION ................................................ ... 25
SERVICE DATA AND SPECIFICATIONS (SDS) ... ... 26
Battery ................................................................. ... 26
Starter .................................................................. ... 26
Generator ............................................................ ... 26

PREPARATIONSC-3
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PREPARATIONPFP:00002
Special Service ToolEKS00B76
Commercial Service ToolsEKS00B77
Tool number
(Kent-Moore No.)
Tool nameDescription
—
(J-44373)
Battery/Starting/Charging system
tester Model 620
SEL403X
Tool name
Description
Power tool Loosening bolts and nuts
PBIC0190E

SC-4
BATTERY
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BATTERYPFP:AYBGL
How to Handle BatteryEKS00B78
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.

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.

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 negative battery 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.
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.
MEL040F
MEL041F
MEL042F

BATTERYSC-5
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Remove the cell plug using a suitable tool.

Add distilled water up to the MAX level.
Sulfation
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 sulfation on the cell plates.
To determine if a battery has been sulfated, note its voltage and
current when charging it. As shown in the figure, less current
and higher voltage are observed in the initial stage of charging
sulfated batteries.
A sulfated battery may sometimes be brought back into service
by means of a long, slow charge, 12 hours or more, followed by
a battery capacity test.
SPECIFIC GRAVITY CHECK
1. Read hydrometer and thermometer indications at eye level.
2. Use the following chart to correct your hydrometer reading
according 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
16 (60) −0.008
10 (50) −0.012
4 (40) −0.016
− 1 (30) −0.020
− 7 (20) −0.024

SC-6
BATTERY
Revision: November 20092006 QX56
CHARGING THE BATTERY
CAUTION:

Do not “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. Do not 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
Do not 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 Diagnoses with Battery/Starting/Charging System TesterEKS00B79
CAUTION:
When working with batteries, always wear appropriate eye protection.
NOTE:

To ensure a complete and thorough diagnosis, the battery, starter and generator 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 headlights 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.
− 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 discharged1.110 - 1.130 Completely discharged
Battery electrolyte temperature
°C ( °F) Add to specific gravity reading
Amps Time
50 1 hour
25 2 hours
10 5 hours
5 10 hours

SC-8
BATTERY
Revision: November 20092006 QX56
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. Refer to
SC-6, "
Trouble Diagnoses with Battery/Starting/Charging System
Te s t e r" .
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 Bat-
tery ”, 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.) Per-
form battery test again with Battery/Starting/Charging system tester.
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-12
STARTING SYSTEM
Revision: November 20092006 QX56
Trouble Diagnoses with Battery/Starting/Charging System TesterEKS00B7D
NOTE:
To ensure a complete and thorough diagnosis, the battery, starter and generator 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 Diagnoses with Battery/Starting/
Charging System Tester" .
3. Press “ENTER” to begin the starting system test.
4. Start the engine.
5. Diagnosis result is displayed on the tester. Refer to SC-12,
"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-15, "
DIAGNOSTIC PROCE-
DURE 2" .
DIAGNOSTIC RESULT ITEM CHART
SEL408X
SEL409X
SEL410X
Diagnostic item Service procedure
CRANKING VOLTAGE NORMAL Go to SC-13, "
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, "
Troub le
Diagnoses with Battery/Starting/Charging System Tester" .
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 Diagnoses
with Battery/Starting/Charging System Tester" . If second test result is “REPLACE BAT-
TERY” , then do so. Perform battery test again to confirm repair.

CHARGING SYSTEMSC-17
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CHARGING SYSTEMPFP:23100
System DescriptionEKS00B7H
The generator 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:

to generator terminal 4

through 10A fuse (No. 30, located in the fuse and fusible link box).
Terminal 1 supplies power to charge the battery and operate the vehicle's electrical system. Output voltage is
controlled by the IC regulator at terminal 4 detecting the input voltage. The charging circuit is protected by the
140A fusible link (letter a , located in the fusible link box).
Ground is supplied:

to generator terminal 2

through body ground E203.
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 24 for the charge warning lamp.
Ground is supplied to terminal 13 of the combination meter through terminal 3 of the generator. With power
and ground supplied, the charge warning lamp will illuminate. When the generator is providing sufficient volt-
age 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 fault is indicated.

SC-18
CHARGING SYSTEM
Revision: November 20092006 QX56
Wiring Diagram — CHARGE —EKS00B7I
WKWA3582E