2008 INFINITI FX35 battery

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< SERVICE INFORMATION >
BATTERY
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 automat ically 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 ce lls varies more than 0.050, the battery should be replaced.
Trouble Diagnosis with Battery Service CenterINFOID:0000000001328244
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.
Removal and InstallationINFOID:0000000001328245
REMOVAL
1. Remove hoodledge cover (RH).
− 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 discharged1.110 - 1.130 Completely discharged
Battery electrolyte temperature
°C ( °F) Add to specific gravity reading
Amp Time
50 1 hour
25 2 hours
10 5 hours5 10 hours
PKIA2805E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

BATTERYSC-7
< SERVICE INFORMATION >
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2. Remove cowl top cover (RH). Refer to EI-23, "Removal and Installation"
3. Disconnect both battery c ables from terminals.
CAUTION:
When disconnecting, disconnect the battery cable from the
negative terminal first.
4. Remove battery fix frame mounting nuts and battery fix frame.
5. Remove battery.
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
When connecting, connect the battery cable to the positive terminal first.
PKIA2806E
Battery fix frame mounting nut
: 3.9 N·m (0.4 kg-m, 35 in-lb)
Battery terminal nut
: 5.4 N·m (0.55 kg-m, 48 in-lb)
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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< SERVICE INFORMATION >
STARTING SYSTEM
STARTING SYSTEM
System DescriptionINFOID:0000000001328246
Power is supplied at all times
 through 40A fusible link (letter F, located in the fuse and fusible link block)
 to ignition switch terminal 1,
 through 15A fuse (No. 78, located in the IPDM E/R)
 to CPU of IPDM E/R,
 through 10A fuse (No. 71, located in the IPDM E/R)
 to CPU of IPDM E/R.
When the selector lever in the P or N position, power is supplied
 from TCM, and through A/T assembly terminal 9
 to IPDM E/R terminal 53.
Ground is supplied
 to IPDM E/R terminals 38, 50 and 60
 from grounds E21, E50 and E51.
With the ignition switch in the START position, and provided that the IPDM E/R receives a starter relay ON sig-
nal from the CAN lines, the IPDM E/ R is energized and power is supplied
 from ignition switch terminal 5
 to IPDM E/R terminal 4 and
 through IPDM E/R terminal 3
 to starter motor terminal 1.
The starter motor plunger closes and provides a clos ed circuit between the battery and starter motor. The
starter motor is grounded to the engine block. With power and ground supplied, cranking occurs and the
engine starts.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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DIAGNOSTIC PROCEDURE 1
Check “B” Terminal Circuit
CAUTION:
Perform diagnosis under the cond ition that engine cannot start by the following procedure.
*1 For battery testing, use Battery Ser-
vice Center (J-480 87). For details
and operating instructions, refer to
Technical Service Bulletin and/or Bat-
tery Service Center User Guide. *2 Refer to "MINIMUM SPECIFICA-
TION OF CRANKING VOLTAGE
REFERENCING COOLANT TEM-
PERATURE". *3 Refer to "Check “B” Terminal Circuit".
*4 Refer to "Check “S” Connector Cir-
cuit".
SKIB1369E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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< SERVICE INFORMATION >
STARTING SYSTEM
1. Remove fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
1.CHECK “B” TERMINAL CIRCUIT
1. Turn ignition switch OFF.
2. Make sure that starter motor “B” terminal E313 terminal 2 connection is clean and tight.
3. Check voltage between starter motor “B” terminal E313 terminal 2 and ground.
OK or NG
OK >> GO TO 2.
NG >> Check harness between battery and starter motor for open circuit.
2.CHECK BATTERY CABLE CONNECTION STATUS (VOLTAGE DROP TEST)
1. Shift A/T selector lever to “P” or “N” position.
2. Check voltage between starter motor “B” terminal E313 terminal 2 and battery positive terminal.
OK or NG
OK >> GO TO 3.
NG >> Check harness between battery and starter motor for poor continuity.
3.CHECK GROUND CIRCUIT STATUS (VOLTAGE DROP TEST)
1. Turn ignition switch OFF.
2. Shift A/T selector lever to “P” or “N” position.
3. Check voltage between starter motor case and battery negative terminal.
OK or NG
OK >> “B” terminal circuit is OK. Further inspection necessary. Refer to SC-10, "
Trouble Diagnosis with Starting/Charg-
ing System Tester (Starting)".
NG >> Check starter motor case and ground for poor continuity.
DIAGNOSTIC PROCEDURE 2
Check “S” Connector Circuit
CAUTION:
Perform diagnosis under the condi tion that engine cannot start by the following procedure.
1. Remove fuel pump fuse.
2. Crank or start the engine (where possi ble) until the fuel pressure is released.
1.CHECK “S” CONNECTOR CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect starter motor connector.
3. Shift A/T selector lever to “P” or “N” position. 2 – Ground : Battery voltage
PKIB8793E
2 – Battery positive terminal
When ignition switch is in START
position
: Less than 0.5 V
PKIB8794E
Starter motor case – Battery negative terminal
When ignition switch is in
START position
: Less than 0.2 V
PKIB8795E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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4. Check voltage between starter motor harness connector E312 (VK45DE) or F33 (VQ35DE) terminal 1 and ground.
OK or NG
OK >> “S” connector circuit is OK. Further inspection neces- sary. Refer to SC-10, "
Trouble Diagnosis with Starting/
Charging System Tester (Starting)".
NG >> Check the following.
 40A fusible link (letter F, located in fuse and fusible link box)
 Ignition switch
 Starter relay (within the IPDM E/R)
 Harness for open or short
MINIMUM SPECIFICATION OF CRANKING VO LTAGE REFERENCING COOLANT TEMPERA-
TURE
Removal and Installation (VK45DE Engine Models)INFOID:0000000001328249
REMOVAL
1. Disconnect the battery cable from the negative terminal.
2. Remove engine front and rear undercover, using power tools. 1 – Ground
When ignition switch is in
START position
: Battery voltage
PKIB8796E
Engine coolant temperature Voltage [V]
− 30 °C to −20 °C ( −22 °F to −4 °F) 8.4
− 19 °C to −10 °C ( −2 °F to 14 °F) 8.9
− 9 °C to 0 °C (16 °F to 32 °F) 9.3
More than 1 °C (More than 34 °F) 9.7
1. Starter motor 2. Starter motor mounting bolt 3. B terminal harness
4. B terminal nut 5. S connector 6. Cylinder block
: N·m (kg-m, ft-lb) : N·m (k g-m, ft-in) : Engine front
PKID1545E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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< SERVICE INFORMATION >
STARTING SYSTEM
3. Disconnect “S” connector.
4. Remove “B” terminal nut.
5. Remove starter motor mounting bolts.
6. Loosen A/T fluid cooler tube clip bolts. Refer to AT-243,
"Removal and Installation (AWD Models)".
7. Remove starter motor downward from the vehicle.
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
Be sure to tighten “B” terminal nut carefully.
Removal and Installation [V Q35DE Engine Models (2WD)]INFOID:0000000001328250
REMOVAL
1. Disconnect the battery cable from the negative terminal.
2. Remove engine rear undercover, using power tools.
3. Disconnect “S” connector.
4. Remove “B” terminal nut.
5. Remove starter motor mounting bolts and harness clip bracket,
using power tools.
6. Remove starter motor downward from the vehicle.
PKIA2810E
1. Starter motor mounting bolt 2. Harness clip bracket 3. S connector
4. B terminal nut 5. B termin al harness 6. Starter motor
7. Oil pan : N·m (kg-m, ft-lb) : N·m (kg-m, ft-in) : Engine front
PKIB8799E
PKIA2812E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

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INSTALLATION
Installation is the reverse order of removal.
CAUTION:
Be sure to tighten “B” terminal nut carefully.
Removal and Installation [V Q35DE Engine Models (AWD)]INFOID:0000000001328251
REMOVAL
1. Disconnect the battery cabl e from the negative terminal.
2. Remove engine front and rear undercover, using power tools.
3. Disconnect “S” connector.
4. Remove “B” terminal nut.
5. Remove starter motor mounting bolts.
6. Remove starter motor downward from the vehicle.
INSTALLATION
Installation is the reverse order of removal.
CAUTION:
Be sure to tighten “B” terminal nut carefully.
Disassembly and AssemblyINFOID:0000000001328252
VK45DE ENGINE MODELS (M002T85075)
1. Starter motor mounting bolt 2. Oil pan 3. Starter motor
4. B terminal harness 5. B terminal nut 6. S connector
: N·m (kg-m, ft-lb) : N·m (k g-m, ft-in) : Engine front
PKID1546E
PKIA2844E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C