2008 INFINITI QX56 battery

PG-6
< BASIC INSPECTION >
BATTERY
• 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
16 (60) −0.008
10 (50) −0.012
4 (40) −0.016
− 1 (30) −0.020
− 7 (20) −0.024
Revision: March 2010 2008 QX56

PG
BATTERYPG-7
< BASIC INSPECTION >
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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
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 norma lly 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.
Work FlowINFOID:0000000001696240
TROUBLE DIAGNOSIS WITH BATTERY SERVICE CENTER
For battery testing, use Battery Service Center (J-48087). For details and operating instructions, refer to Tech-
nical Service Bulletin and/or Battery Service Center User Guide.
− 12 (10) −0.028
− 18 (0) −0.032
Battery electrolyte temperature [
°C ( °F)] Add to specific gravity reading
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
Amps Time
50 1 hour
25 2 hours
10 5 hours
5 10 hours
Revision: March 2010 2008 QX56

PG-8
< BASIC INSPECTION >
INSPECTION AND ADJUSTMENT
INSPECTION AND ADJUSTMENT
ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL
ADDITIONAL SERVICE WHEN REMOVING BATTERY NEGATIVE TERMINAL : Spe-
cial Repair Requirement
INFOID:0000000006095112
Required Procedure After Battery Disconnection
System ItemReference
Engine Control Idle Air Volume Learning Refer to EC-18
.
Brake Control Steering Angle Sensor Neutral Position Refer to BRC-8
.
Power Window Control Power Window System Initialization Refer to TSB.
Body, Lock & Security Automatic Back Door Initialization Refer to DLK-9
.
Roof Sunroof Memory Reset/Initialization Refer to RF-5
.
Seats Automatic Drive Positioner System Initialization Refer to Owner's Manual.
Audio-Visual System Audio (Radio Preset)
Refer to Owner's Manual.
Navigation System Refer to Owner's Manual.
Rear View Monitor Guiding Line Adjustment Refer to AV- 7
.
Revision: March 2010 2008 QX56

PG
POWER SUPPLY ROUTING CIRCUITPG-9
< COMPONENT DIAGNOSIS >
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COMPONENT DIAGNOSIS
POWER SUPPLY ROUTING CIRCUIT
Wiring Diagram —Battery Power Supply —INFOID:0000000001744669
AAMWA0090GB
Revision: March 2010
2008 QX56

PG
HARNESSPG-45
< COMPONENT DIAGNOSIS >
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C1 E5 W/24 : To F14
C1 E119 W/16: IPDM E/R (intelligent power distri-
bution module engine room)
C2 E7 GR/2 : Fusible link box (battery) D1 E120 W/6: IPDM E/R (intelligent power distri-
bution module engine room)
C2 E9 — : Body ground E1 E121 BR/12: IPDM E/R (intelligent power distri-
bution module engine room)
D4 E11 B/8 : Front combination lamp LH (without
daytime running lights) C1 E122 W/12: IPDM E/R (intelligent power distri-
bution module engine room)
D4 E11 B/8 : Front combination lamp LH (with
daytime running lights)
C1 E123 BR/8: IPDM E/R (intelligent power distri-
bution module engine room)
D3 E12 B/5 : Stop lamp relay D1 E124 W/6: IPDM E/R (intelligent power distri-
bution module engine room)
D4 E14 — : Body ground F3 E125 B/47: ABS actuator and electric unit
(control unit)
C2 E15 — : Body ground D4 E126 — : Body ground
C1 E16 B/40 : ECM C2 E130 W/2 : Compressor motor relay
E4 E18 GR/2 : Front wheel sensor LH C3 E131 W/2 : Compressor motor relay
D1 E19 W/16 : To F33 C3 E134 GR/6 : ICC brake hold relay
E3 E21 GR/2 : Brake fluid level switch C2 E135 GR/2 : Transfer dropping resister
E2 E23 GR/6 : Front wiper motor C1 E140 BR/6 : Trailer tow relay-2
D4 E24 — : Body ground B2 E153 W/2 : Transfer motor relay
F3 E25 BR/3 : Intelligent key warning buzzer B2 E154 W/2 : Transfer motor relay
C3 E27 BR/2 : Fusible link box (battery) D3 E156 L/4 : Trailer turn relay LH
C2 E30 /1 : Fusible link box (battery )D3 E157 L/4 : Trailer turn relay RH
E3 E31 B/3 : Front pressure sensor D5 E158 B/3 : Front sonar sensor LH outer
E3 E32 B/3 : Rear pressure sensor D5 E159 GR/3 : To E164
E1 E39 W/2 : To F34 B4 E160 GR/3 : To E165
D3 E40 B/3 : To E201 C3 E161 B/3 : Battery current sensor
D3 E41 SMJ : To C1 B4 E162 B/3 : Front sonar sensor LH inner
D3 E42 B/6 : ICC sensor C5 E163 B/3 : Front sonar sensor RH inner
E1 E46 B/5 : Transfer shift high relay D5 E164 GR/3 : To E159
D2 E47 B/5 : Transfer shift lo w relayA4 E165 GR/3 : To E160
C4 E48 B/3 : Refrigerant pressure sensor A3 E166 B/3 : Front sonar sensor RH outer
E3 E49 B/6 : Active booster Engine room sub-harness
D1 E69 L/4 : Transfer shut off relay D3 E201 B/3 : To E40
D5 E101 B/3 : Front turn-fog lamp LH C1 E202 /1 : Fusible link box (battery)
A4 E102 B/3 : Front turn-fog lamp RH C2 E203 — : Engine ground
C3 E103 B/5 : Daytime light relay C3 E204 /1 : Generator
D4 E105 BR/2 : Front and rear washer motor C3 E205 B/3 : Generator
E4 E106 BR/2 : Washer fluid level switch C3 E206 /1 : Generator
B3 E107 B/8 : Front combination lamp LH
C5 E113 W/2 : Cooling fan motor
Revision: March 2010 2008 QX56

PG
HARNESSPG-49
< COMPONENT DIAGNOSIS >
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C3 F7 GR/3
: Ignition coil No. 4 (with power
transistor) F1 F60 GR/2 : Neutral-4LO switch
C3 F8 GR/3 : Ignition coil No. 6 (with power
transistor)
D5 F61 G/2: Intake valve timing control solenoid valve
(bank 1)
E2 F9 G/10 : A/T assembly D5 F62 G/2: Intake valve timing control position sensor
(bank 1)
C3 F10 — : Engine ground C4 F63 G/2: Intake valve timing control solenoid valve
(bank 2)
D3 F11 B/3 : Crankshaft position sensor (POS) C4 F64 G/2 : Intake valve timing control position sensor
(bank 2)
E1 F12 G/4 : Heated oxygen sensor 2 (bank2) E3 F65 GR/4 : Air fuel ratio (A/F) sensor 1 (bank1)
F2 F13 G/4 : Heated oxygen sensor 2 (bank1) C2 F68 B/2 : Water valve
B2 F14 W/24 : To E5 C3 F101 B/6 : To F26
D4 F15 L/2 : EVAP canister purge volume control
solenoid valve C3 F102 B/2 : Knock sensor (bank 1)
E5 F16 — : Engine ground C3 F103 GR/2 : Engine coolant temperature sensor
C4 F18 GR/2 : Fuel injector No. 2 C3 F104 B/2 : Knock sensor (bank 2)
D4 F20 GR/2 : Fuel injector No. 4
F4 F21 W/2 : Condenser-1
D3 F22 GR/2 : Fuel injector No. 6
D4 F23 B/3 : Camshaft position sensor (phase)
D4 F26 B/6 : To F101
E3 F27 B/1 : Starter motor
D4 F30 GR/2 : Fuel injector No. 1
D3 F31 GR/2 : Fuel injector No. 8
B2 F32 W/16 : To E2
C2 F33 W/16 : To E19
C2 F34 W/2 : To E39
B3 F39 — : Fusible link (battery)
D4 F41 GR/2 : Fuel injector No. 3
D4 F42 GR/2 : Fuel injector No. 5
D3 F45 GR/2 : Fuel injector No. 7
B4 F46 B/3 : Power steering pressure sensor
E4 F47 GR/3 : Ignition coil No. 1 (with power
transistor)
E4 F48 GR/3 : Ignition coil No. 3 (with power
transistor)
E4 F49 GR/3 : Ignition coil No. 5 (with power
transistor)
D4 F50 B/6 : Electric throttle control actuator
E4 F51 GR/3 : Ignition coil No. 7 (with power
transistor)
D2 F52 GR/3 : Ignition coil No. 8 (with power
transistor)
E5 F53 B/6 : Mass air flow sensor
B2 F54 B/81 : ECM
F1 F55 B/2 : ATP switch
Revision: March 2010 2008 QX56

PG
BATTERYPG-73
< ON-VEHICLE REPAIR >
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ON-VEHICLE REPAIR
BATTERY
Removal and InstallationINFOID:0000000001538891
REMOVAL
1. Disconnect the negative battery terminal (1) and positive battery
terminal (2).
CAUTION:
Remove negative battery terminal first.
2. Remove the battery cover.
3. Remove the battery clamp bolt (3) and battery clamp.
4. Remove the battery.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
When installing, in stall the positive battery terminal first.
Reset electronic systems as necessary. Refer to PG-8, "
ADDITIONAL SERVICE WHEN REMOVING BAT-
TERY NEGATIVE TERMINAL : Special Repair Requirement".
⇐
: Front
AWBIA0504ZZ
Battery clamp bolt : 14.7 N·m (1.5 kg-m, 11 ft-lb)
Battery terminal nut : 3.5 N·m (0.36 kg-m, 31 in-lb)
Revision: March 2010 2008 QX56

PG-74
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
BatteryINFOID:0000000001538892
Standard battery
Ty p e Gr. 27
Capacity (20 HR) minimum V-AH 80
Cold cranking current A
(For reference value) 710
Revision: March 2010
2008 QX56