INFINITI FX35 2005 Service Manual

SC-16
STARTING SYSTEM
Revision: 2005 July 2005 FX
DIAGNOSTIC PROCEDURE 2
Check “S” Connector Circuit
1. CHECK POWER SUPPLY FOR STARTER MOTOR “S” TERMINAL
1. Remove fuel pump fuse.
2. Crank or start the engine (where possible) until the fuel pressure is released.
3. Turn ignition switch OFF.
4. Disconnect starter motor connector.
5. Check voltage between starter motor harness connector E312 (VK45DE) or F33 (VQ35DE) terminal 1 (B) and ground.
OK or NG
OK >> “S” connector circuit is OK. Further inspection neces- sary. Refer to SC-14, "
WORK FLOW" .
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 VOLTAGE REFERENCING COOLANT TEMPERA-
TURE
1 (B) – Ground
When ignition switch is in
START position : Battery voltage
PKIA2807E
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

STARTING SYSTEM SC-17
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Revision: 2005 July 2005 FX
Removal and Installation AKS00BRA
VK45DE ENGINE MODELS
Removal
1. Disconnect the battery cable 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. Loosen A/T fluid cooler tube clip bolts. Refer to AT- 2 7 0 ,
"TRANSMISSION ASSEMBLY" .
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.
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) : Engine front
SKIB7206E
PKIA2810E

SC-18
STARTING SYSTEM
Revision: 2005 July 2005 FX
VQ35DE ENGINE MODELS (2WD)
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.
Installation
Installation is the reverse order of removal.
CAUTION:
Be sure to tighten “B” terminal nut carefully.
1. Starter motor mounting bolt 2. Harness clip bracket 3. S connector
4. B terminal nut 5. B terminal harness 6. Starter motor
7. Oil pan : N·m (kg-m, ft-lb) : N·m (kg-m, in-lb) : Engine front
PKIB8799E
PKIA2812E

STARTING SYSTEM SC-19
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Revision: 2005 July 2005 FX
VQ35DE ENGINE MODELS (AWD)
Removal
1. Disconnect the battery cable 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.
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) : Engine front
SKIB7207E
PKIA2844E

SC-20
STARTING SYSTEM
Revision: 2005 July 2005 FX
Disassembly and Assembly AKS0079R
VK45DE ENGINE MODELS
1. Nut 2. Magnetic switch assembly 3. Adjusting plate
4. Packing 5. Plate 6. Shift lever
7. Front bracket assembly 8. Yoke assembly 9. Armature assembly
10. Washer 11. Rear bearing 12. Brush holder assembly
13. Rear bracket assembly 14. Cover 15. Packing
16. Ball 17. Shaft gear assembly 18. Clutch gear assembly
19. Pinion stopper 20. Stopper clip
: N·m (kg-m, in-lb) : N·m (kg-m, ft-lb) (H): High-temperature grease point
SKIB7208E

STARTING SYSTEM SC-21
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Revision: 2005 July 2005 FX
VQ35DE ENGINE MODELS (2WD)
1. Magnetic switch assembly 2. Dust cover kit 3. Shift lever set
4. Center bracket (A) 5. Yoke assembly 6. Armature assembly
7. Brush holder assembly 8. Thrust washer 9. Rear cover assembly
10. Shaft gear assembly 11. Packing 12. Thrust washer
13. Center bracket (P) 14. E-ring 15. Pinion assembly
16. Ball bearing 17. Caul 18. Gear case assembly
: N·m (kg-m, in-lb) (H): High-temperature grease point
PKIB8804E

SC-22
STARTING SYSTEM
Revision: 2005 July 2005 FX
VQ35DE ENGINE MODELS (AWD)
INSPECTION AFTER DISASSEMBLY
Pinion/Clutch Check
1. Inspect pinion teeth.

Replace pinion if teeth are worn or damaged. (Also check condition of ring gear teeth.)
2. Inspect reduction gear teeth.

Replace reduction gear if teeth are worn or damaged. (Also check condition of armature shaft gear
teeth.)
3. Check to see if pinion locks in one direction and rotates smoothly in the opposite direction.

If it locks or rotates in both directions, or unusual resistance is evident, replace.
1. Magnetic switch assembly 2. Dust cover kit 3. Shift lever set
4. Center bracket (A) 5. Yoke assembly 6. Armature assembly
7. Brush holder assembly 8. Thrust washer 9. Rear cover assembly
10. Shaft gear assembly 11. Packing 12. Thrust washer
13. Center bracket (P) 14. E-ring 15. Pinion assembly
16. Ball bearing 17. Caul 18. Gear case assembly
: N·m (kg-m, in-lb) (H): High-temperature grease point
PKIB8805E

CHARGING SYSTEM SC-23
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Revision: 2005 July 2005 FX
CHARGING SYSTEMPFP:23100
System DescriptionAKS0079I
The alternator 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

through 10A fuse (No. 33, located in the fuse and fusible link block)

to alternator terminal 4 (“S” terminal).
“B” Terminal supplies power to charge the battery and operate the vehicle's electrical system. Output voltage
is controlled by the IC regulator at terminal 4 (“S” terminal) detecting the input voltage.
The charging circuit is protected by the 120A fusible link (VK45DE and VQ35DE AWD).
The alternator is grounded to the engine block.
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 7 for the charge warning lamp.
Ground is supplied

to combination meter terminal 2

through alternator terminal 3 (“L” terminal)

to alternator terminal 2 (“E” terminal) (VK45DE) or through case ground (VQ35DE)

through ground E304 (VK45DE).
With power and ground supplied, the charge warning lamp will illuminate. When the alternator is providing suf-
ficient voltage 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 malfunction is indicated.
MALFUNCTION INDICATOR
The IC regulator warning function activates to illuminate charge warning lamp, if any of the following symp-
toms occur while alternator is operating:

Excessive voltage is produced.

No voltage is produced.

SC-24
CHARGING SYSTEM
Revision: 2005 July 2005 FX
Wiring Diagram — CHARGE —AKS0079J
VK45DE ENGINE MODELS
TKWM0550E

CHARGING SYSTEM SC-25
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Revision: 2005 July 2005 FX
VQ35DE ENGINE MODELS
TKWM0551E