2004 INFINITI FX35 Lan system

RFD-2
PRECAUTIONS
Revision: 2004 November 2004 FX35/FX45
PRECAUTIONSPFP:00001
PrecautionsADS000K2
CAUTION:

Before starting diagnosis of the vehicle, understand symptoms well. Perform correct and system-
atic operations.

Check for the correct installation status prior removal or disassembly. When matching marks are
required, be sure they do not interfere with the function of the parts they are applied to.

Carry out an overhaul in a clean work place, Using a dust proof room is recommended.

Before disassembly, using steam or white gasoline, completely remove sand and mud from the
exterior the unit, preventing them from entering into the unit during disassembly or assembly.

Check appearance of the disassembled parts for damage, deformation, and abnormal wear. If a
malfunction is detected, replace it with a new one.

Normally replace lock pins, oil seals, and bearings with new ones every times they are removed.

In principle, tighten bolts or nuts gradually in several steps working diagonally from inside to out-
side. If tightening sequence is specified, observe it.

Clean and flush the parts sufficiently and blow them dry.

Be careful not to damage the sliding surfaces and mating surface.

When applying sealant, remove the old sealant from the mounting surface; then remove any mois-
ture, oil, and foreign materials from the application and mounting surfaces.

Always use shop paper for cleaning the inside of components.

Avoid using cotton gloves or a shop cloth to prevent entering of lint.

During assembly, observe the specified tightening torque, and new differential gear oil, Vaseline,
or multi-purpose grease, as specified for each vehicle, when necessary.

SC-1
STARTING & CHARGING SYSTEM
K ELECTRICAL
CONTENTS
C
D
E
F
G
H
I
J
L
M
SECTION SC
A
B
SC
Revision: 2004 November 2004 FX35/FX45
STARTING & CHARGING SYSTEM
PRECAUTIONS .......................................................... 2
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 2
Wiring Diagrams and Trouble Diagnosis .................. 2
PREPARATION ........................................................... 3
Special Service Tools ............................................... 3
Commercial Service Tools ........................................ 3
BATTERY .................................................................... 4
How to Handle Battery ............................................. 4
METHODS OF PREVENTING OVER-DIS-
CHARGE ............................................................... 4
CHECKING ELECTROLYTE LEVEL .................... 5
SPECIFIC GRAVITY CHECK ............................... 5
CHARGING THE BATTERY ................................. 6
Trouble Diagnosis 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
VK45DE ENGINE MODELS ................................ 11
VQ35DE ENGINE MODELS ............................... 12
Trouble Diagnosis with Battery/Starting/Charging
System Tester ........................................................ 13
DIAGNOSTIC RESULT ITEM CHART ................ 13
WORK FLOW ...................................................... 14
DIAGNOSTIC PROCEDURE 1 ........................... 15
DIAGNOSTIC PROCEDURE 2 ........................... 16
MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEM-
PERATURE ......................................................... 16
Removal and Installation ........................................ 17
VK45DE ENGINE MODELS ................................ 17
VQ35DE ENGINE MODELS (2WD) .................... 18
VQ35DE ENGINE MODELS (AWD) .................... 19
Disassembly and Assembly .................................... 20
Inspection After Disassembly ................................. 22
PINION/CLUTCH CHECK ................................... 22
CHARGING SYSTEM ............................................... 23
System Description ................................................. 23
Wiring Diagram — CHARGE — ............................. 24
VK45DE ENGINE MODELS ................................ 24
VQ35DE ENGINE MODELS ............................... 25
Trouble Diagnosis with Battery/Starting/Charging
System Tester ......................................................... 26
DIAGNOSTIC RESULT ITEM CHART ................ 27
WORK FLOW ...................................................... 28
DIAGNOSTIC PROCEDURE 1 ........................... 29
DIAGNOSTIC PROCEDURE 2 ........................... 30
DIAGNOSTIC PROCEDURE 3 ........................... 31
DIAGNOSTIC PROCEDURE 4 ........................... 32
DIAGNOSTIC PROCEDURE 5 ........................... 33
MALFUNCTION INDICATOR .............................. 33
Removal and Installation ........................................ 34
VK45DE ENGINE MODELS ................................ 34
VQ35DE ENGINE MODELS ............................... 35
Disassembly and Assembly .................................... 37
SERVICE DATA AND SPECIFICATIONS (SDS) ...... 39
Battery .................................................................... 39
Starter ..................................................................... 39
Alternator ................................................................ 39

SC-14
STARTING SYSTEM
Revision: 2004 November 2004 FX35/FX45
WORK FLOW
*1SC-6, "Trouble Diagnosis with Bat-
tery/Starting/Charging System
Te s t e r".*2SC-16, "
MINIMUM SPECIFICATION
OF CRANKING VOLTAGE REFER-
ENCING COOLANT TEMPERA-
TURE".*3SC-15, "
DIAGNOSTIC PROCE-
DURE 1".
*4SC-16, "
DIAGNOSTIC PROCE-
DURE 2".
SKIB0227E

SC-16
STARTING SYSTEM
Revision: 2004 November 2004 FX35/FX45
DIAGNOSTIC PROCEDURE 2
Check “S” Connector Circuit
1. CHECK POWER SUPPLY FOR STARTER MOTOR “S” CONNECTOR
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 S connector.
5. Check voltage between starter motor harness connector E312
*1
or F33*2 terminal 1 (B) and ground using a digital circuit tester.
NOTE:
*1: VK45DE, *2: VQ35DE
OK or NG
OK >> GO TO 2.
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 (intelligent power distribution module engine room)].

Harness for open or short
2. CHECK “S” TERMINAL CONNECTION (VOLTAGE DROP TEST)
1. Turn ignition switch OFF.
2. Connect starter motor S connector.
3. Check voltage between starter motor harness connector E312
*1
or F33*2 terminal 1 (B) and battery positive terminal using a dig-
ital circuit tester.
NOTE:
*1: VK45DE, *2: VQ35DE
OK or NG
OK >> Starter motor “S” connector circuit is OK. Further inspec-
tion necessary. Refer to SC-14, "
WORK FLOW" .
NG >> Check harness between the battery and the starter motor “S” connector for poor continuity.
MINIMUM SPECIFICATION OF CRANKING VOLTAGE REFERENCING COOLANT TEMPERA-
TURE
When the ignition switch is in START position,
Battery voltage should exist.
PKIA2807E
When the ignition switch is in START position,
Voltage: Less than 1V
PKIA2808E
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-21
C
D
E
F
G
H
I
J
L
MA
B
SC
Revision: 2004 November 2004 FX35/FX45
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. Through-bolt 11. Internal gear 12. Planetary gear
13. Pinion shaft 14. Packing 15. Thrust washer
16. Center bracket (P) 17. E-ring 18. Pinion assembly
19. Ball bearing 20. Caul 21. Gear case assembly
PKIA2814E

SC-22
STARTING SYSTEM
Revision: 2004 November 2004 FX35/FX45
Inspection After Disassembly AKS0079H
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. Through-bolt 11. Internal gear 12. Planetary gear
13. Pinion shaft 14. Packing 15. Thrust washer
16. Center bracket (P) 17. E-ring 18. Pinion assembly
19. Ball bearing 20. Caul 21. Gear case assembly
PKIA2845E

SE-16
AUTOMATIC DRIVE POSITIONER
Revision: 2004 November 2004 FX35/FX45
CAN Communication System DescriptionAIS003MN
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.
Each control unit transmits/receives data but selectively reads required data only.
CAN Communication UnitAIS004UO
Refer to LAN-6, "CAN COMMUNICATION" .
PIIA5082E

SE-42
AUTOMATIC DRIVE POSITIONER
Revision: 2004 November 2004 FX35/FX45
Can Communication Inspection Using CONSULT-II (Self-diagnosis)AIS002XL
1. SELF-DIAGNOSTIC RESULT CHECK
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
1. Connect to CONSULT-II, and select “AUTO DRIVE POS.” on the “SELECT DAIAG SYSTEM” screen.
2. Select “SELF-DIAG RESULTS” on “SELECT DISG MODE” screen.
3. Check display content in self-diagnostic results.
Displayed U1000?
Yes >> INSPECTION END
No >> Refer to LAN-4, "
Precautions When Using CONSULT-II" .
Symptom ChartAIS002XM
MIRROR MOTOR RHThe RH mirror motor moves the mirror UP/DOWN and LEFT/RIGHT by receiving the drive
signal.
MIRROR MOTOR LHThe LH mirror motor moves the mirror UP/DOWN and LEFT/RIGHT by receiving the drive
signal. Test item Description
Symptom Diagnoses / service procedureReference
page
Only setting change function cannot be set with display.Interacted display system (with out NAVI)AV- 5 5
Navigation system (with NAVI)AV- 8 8
A part of seat system does not operate (both automati-
cally and manually).1. Sliding motor circuit check SE-44
2. Reclining motor circuit check SE-45
3. Front lifter motor circuit checkSE-46
4. Rear lifter motor circuit checkSE-48
5. If the above systems are normal, replace the driver
seat control unit.SE-15
A part of steering tilt, telescopic and door mirror does not
operate (both automatically and manually).1.Tilt motor circuit checkSE-51
2. Telescopic motor circuit checkSE-49
3. Mirror motor LH circuit check SE-52
4. Mirror motor RH circuit check SE-54
5. If the above systems are normal, replace the automatic
drive positioner control unit.SE-15
A part of seat system does not operate (only automatic
operation).1. Sliding sensor circuit checkSE-56
2. Reclining sensor circuit checkSE-57
3. Front lifting sensor circuit checkSE-58
4. Rear lifting sensor circuit checkSE-59
5. If the above systems are normal, replace the driver
seat control unit.SE-15
A part of door mirror system dose not operate (only auto-
matic operation).1. Mirror sensor LH circuit checkSE-622. Mirror sensor RH circuit checkSE-63
3. If all the above systems are normal, replace the auto-
matic drive positioner control unit.SE-15