2004 INFINITI FX35 battery

CHARGING SYSTEM
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Revision: 2004 November 2004 FX35/FX45
DIAGNOSTIC PROCEDURE 1
Check “L” Terminal Circuit
1. CHECK “L” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check to see if “L” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “L” terminal connection. Confirm repair by performing complete Battery/Starting/Charging
system test.
2. CHECK “L” TERMINAL CIRCUIT
1. Disconnect alternator connector.
2. Apply ground to alternator harness connector E311
*1 or F26*2
terminal 3 (OR) with the ignition switch in the ON position.
NOTE:
*1: VK45DE, *2: VQ35DE
OK or NG
OK >> Go to SC-28, "WORK FLOW" .
NG >> Check the following.

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

CHARGE lamp

Harness for open or short between combination meter and fuse

Harness for open or short between combination meter and alternator CHARGE lamp should light up.
PKIA2815E

SC-30
CHARGING SYSTEM
Revision: 2004 November 2004 FX35/FX45
DIAGNOSTIC PROCEDURE 2
Check “B” Terminal Circuit
1. CHECK “B” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check to see if “B” terminal is clean and tight.
OK or NG
OK >> GO TO 2. Confirm repair by performing complete Battery/Starting/Charging system test.
NG >> Repair “B” terminal connection.
2. CHECK ALTERNATOR “B” TERMINAL CIRCUIT
Check voltage between alternator B terminal E307 terminal 1 (B/R)
and ground using a digital circuit tester.
OK or NG
OK >> GO TO 3.
NG >> Check the following.

120A fusible link [fusible link holder (VK45DE and
VQ35DE AWD)]

Harness for open or short between alternator and fus-
ible link (VK45DE and VQ35DE AWD)

Harness for open or short between alternator and battery (VQ35DE 2WD)
3. CHECK “B” TERMINAL CONNECTION (VOLTAGE DROP TEST)
1. Start the engine.
2. When the engine running at idle and warm, check voltage
between alternator B terminal E307 terminal 1 (B/R) and battery
positive terminal using a digital circuit tester.
OK or NG
OK >> Replace the alternator. Confirm repair by performing
complete Battery/Starting/Charging system test.
NG >> Check harness between the battery and the alternator
for poor continuity. Battery voltage should exist.
PKIA2944E
Voltage: Less than 0.2V
PKIA2366E

CHARGING SYSTEM
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Revision: 2004 November 2004 FX35/FX45
DIAGNOSTIC PROCEDURE 3
Check “L” Terminal Circuit
1. CHECK “L” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check to see if “L” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “L” terminal connection. Confirm repair by performing complete Battery/Starting/Charging
system test.
2. CHECK “L” TERMINAL CIRCUIT
1. Disconnect alternator connector.
2. Apply ground to alternator harness connector E311
*1 or F26*2
terminal 3 (OR) with the ignition switch in the ON position.
NOTE:
*1: VK45DE, *2: VQ35DE
OK or NG
OK >> Replace the alternator. Confirm repair by performing
complete Battery/Starting/Charging system test.
NG >> Check the following.

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

CHARGE lamp

Harness for open or short between combination meter and fuse

Harness for open or short between combination meter and alternator CHARGE lamp should light up.
PKIA2815E

SC-32
CHARGING SYSTEM
Revision: 2004 November 2004 FX35/FX45
DIAGNOSTIC PROCEDURE 4
Check “B” Terminal Circuit
1. CHECK “B” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check to see if “B” terminal is clean and tight.
OK or NG
OK >> GO TO 2. Confirm repair by performing complete Battery/Starting/Charging system test.
NG >> Repair “B” terminal connection.
2. CHECK ALTERNATOR “B” TERMINAL CIRCUIT
Check voltage between alternator B terminal E307 terminal 1 (B/R)
and ground using a digital circuit tester.
OK or NG
OK >> GO TO 3.
NG >> Check the following.

120A fusible link [fusible link holder (VK45DE and
VQ35DE AWD)]

Harness for open or short between alternator and fus-
ible link (VK45DE and VQ35DE AWD)

Harness for open or short between alternator and battery (VQ35DE 2WD)
3. CHECK “B” TERMINAL CONNECTION (VOLTAGE DROP TEST)
1. Start the engine.
2. When the engine running at idle and warm, check voltage
between alternator B terminal E307 terminal 1 (B/R) and battery
positive terminal using a digital circuit tester.
OK or NG
OK >> GO TO 4.
NG >> Check harness between the battery and the alternator
for poor continuity.
4. CHECK ALTERNATOR DRIVE BELT TENSION
1. Turn ignition switch OFF.
2. Check alternator drive belt tension. Refer to EM-169, "
Checking Drive Belts" (VK45DE) or EM-15,
"Checking Drive Belts" (VQ35DE) in “ENGINE MECHANICAL (EM)” section.
YES or NO
YES >> Replace the alternator. Confirm repair by performing complete Battery/Starting/Charging system
test.
NO >> Readjust drive belt tension. Refer to EM-169, "
Tension Adjustment" (VK45DE) or EM-15, "Te n -
sion Adjustment" (VQ35DE) in “ENGINE MECHANICAL (EM)” section. Battery voltage should exist.
PKIA2944E
Voltage: Less than 0.2V
PKIA2366E
Does drive belt tension normal?

CHARGING SYSTEM
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Revision: 2004 November 2004 FX35/FX45
DIAGNOSTIC PROCEDURE 5
Check “S” Terminal Circuit
1. CHECK “S” TERMINAL CONNECTION
1. Turn ignition switch OFF.
2. Check to see if “S” terminal is clean and tight.
OK or NG
OK >> GO TO 2.
NG >> Repair “S” terminal connection. Confirm repair by performing complete Battery/Starting/Charging
system test.
2. CHECK ALTERNATOR “S” TERMINAL CIRCUIT
Check voltage between alternator harness connector E311
*1 or
F26
*2 terminal 4 (LG) and ground using a digital circuit tester.
NOTE:
*1: VK45DE, *2: VQ35DE
OK or NG
OK >> GO TO 3.
NG >> Check the following.

10A fuse (No. 33, located in fuse and fusible link box)

Harness for open or short between alternator and
fuse
3. CHECK “S” TERMINAL CONNECTION (VOLTAGE DROP TEST)
1. Start the engine.
2. When the engine running at idle and warm, check voltage
between alternator connector E311
*1 or F26*2 terminal 4 (LG)
and battery positive terminal using a digital circuit tester.
NOTE:
*1: VK45DE, *2: VQ35DE
OK or NG
OK >> Replace the alternator. Confirm repair by performing
complete Battery/Starting/Charging system test.
NG >> Check harness between the battery and the alternator for poor continuity.
MALFUNCTION INDICATOR
The IC regulator warning function activates to illuminate “CHARGE” warning lamp, if any of the following
symptoms occur while alternator is operating:

Excessive voltage is produced.

No voltage is produced.Battery voltage should exist.
PKIA2816E
Voltage: Less than 0.2V
PKIA2817E

SC-34
CHARGING SYSTEM
Revision: 2004 November 2004 FX35/FX45
Removal and Installation AKS00816
VK45DE ENGINE MODELS
Removal
1. Disconnect negative battery cable.
2. Remove engine front undercover, using power tools.
3. Remove cooling fan lower shroud. Refer to CO-39, "
RADIATOR" in “ENGINE COOLING SYSTEM (CO)”
section.
4. Remove alternator, water pump and A/C compressor belt. Refer to EM-169, "
Removal and Installation" in
“ENGINE MECHANICAL (EM)” section.
5. Remove alternator mounting bolts, using power tools.
6. Disconnect alternator connector.
7. Remove B terminal nut.
8. Remove alternator ground harness mounting bolt.
9. Remove alternator assembly to the direction of under side the
vehicle.
1. Alternator ground harness mounting bolt 2. B terminal nut 3. Alternator B terminal harness
4. Alternator Nut 5. Alternator bracket 6. Alternator connector
7. Alternator 8. Alternator mounting bolt 9. Alternator stay
10. Alternator mounting bolt 11. Alternator stay mounting bolt 12. Alternator ground harness
PKIA2818E
PKIA2954E
PKIA2820E

CHARGING SYSTEM
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Revision: 2004 November 2004 FX35/FX45
Installation
Note the following, and install in the reverse order of removal.

Install alternator, and check tension of belt. Refer to EM-169, "Checking Drive Belts" in “ENGINE
MECHANICAL (EM)” section.
CAUTION:
Be sure to tighten B terminal nut carefully.
VQ35DE ENGINE MODELS
Removal
1. Disconnect negative battery cable.
2. Remove engine front undercover, using power tools.
3. Remove alternator and power steering belt. Refer to EM-16, "
Removal and Installation" in “ENGINE
MECHANICAL (EM)” section.
4. Disconnect alternator connector.
5. Remove B terminal nut.
6. Remove harness clip and water hose bracket from alternator.
1. B terminal nut 2. Alternator B terminal harness 3. Alternator connector
4. Alternator mounting bolt 5. Alternator stay mounting bolt 6. Alternator stay
7. Alternator
PKIA2821E
PKIA2358E

SERVICE DATA AND SPECIFICATIONS (SDS)
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Revision: 2004 November 2004 FX35/FX45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
BatteryAKS0079N
StarterAKS0079O
AlternatorAKS0079P
Type80D23L
Capacity V - AH 12 - 52
Cold cranking current (For reference value)
A582
Applied model VK45DE VQ35DE (2WD) VQ35DE (AWD)
Ty p eM2T85075 S114 - 880 S114 - 881
MITSUBISHI
makeHITACHI make
Reduction gear type
System voltage V 12
No-loadTerminal voltage V 11
Current A Less than 145 Less than 90
Revolution rpm More than 3,300 More than 2,880
Minimum diameter of commutator mm (in) 31.4 (1.236) 28.0 (1.102)
Minimum length of brush mm (in) 11.0 (0.433) 10.5 (0.413)
Brush spring tension N (kg, lb)26.7 - 36.1
(2.72 - 3.68,
6.80 - 8.12)16.2 (1.65, 3.6)
Clearance between bearing metal and armature shaft mm (in) Less than 0.2 (0.008)
Clearance between pinion front edge and pinion stopper mm (in)0.5 - 2.0
(0.020 - 0.079)0.3 - 2.5 (0.012 - 0.098)
Applied model VK45DE VQ35DE
Ty p eLR1110 - 716 A3TG0191
HITACHI make MITSUBISHI make
Nominal rating V - A 12 - 110
Ground polarityNegative
Minimum revolution under no-load (When 13.5V is applied)
rpmLess than 1,100 Less than 1,000
Hot output current (When 13.5V is applied) A/
rpmMore than 70/1,800
More than 91/2,500
More than 110/5,000More than 37/1,300
More than 92/2,500
More than 103/5,000
Regulated output voltage V 14.1 - 14.7
Minimum length of brush mm (in) More than 6.00 (0.236) More than 5.00 (0.197)
Brush spring pressure N (g, oz)1.00 - 3.43
(102 - 350, 3.60 - 12.34)4.9 - 6.1
(499 - 622, 17.62 - 21.94)
Slip ring minimum outer diameter mm (in) More than 26.0 (1.024) More than 22.1 (0.870)
Rotor (Field coil) resistance Ω2.31 1.7 - 2.1