2007 INFINITI M35 fluid

TF-1
TRANSFER
D DRIVELINE/AXLE
CONTENTS
C
E
F
G
H
I
J
K
L
M
SECTION TF
A
B
TF
Revision: 2007 April2007 M35/M45
TRANSFER
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” .................................................................. 3
Precautions .............................................................. 3
Service Notice or Precautions .................................. 4
PREPARATION ........................................................... 5
Special Service Tools ............................................... 5
Commercial Service Tools ........................................ 7
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 8
NVH Troubleshooting Chart ..................................... 8
TRANSFER FLUID ..................................................... 9
Replacement ............................................................ 9
DRAINING ............................................................. 9
FILLING ................................................................. 9
Inspection ................................................................. 9
FLUID LEAKAGE AND FLUID LEVEL .................. 9
AWD SYSTEM .......................................................... 10
Power Transfer Diagram ........................................ 10
System Description ................................................ 10
DESCRIPTION .................................................... 10
ELECTRIC CONTROLLED COUPLING .............. 11
AWD CONTROL UNIT ......................................... 11
AWD WARNING LAMP ....................................... 12
System Diagram ..................................................... 12
COMPONENTS FUNCTION DESCRIPTION ..... 13
CAN Communication .............................................. 13
SYSTEM DESCRIPTION .................................... 13
TROUBLE DIAGNOSIS ............................................ 14
Fail-Safe Function .................................................. 14
How to Perform Trouble Diagnosis ........................ 14
BASIC CONCEPT ............................................... 14
Location of Electrical Parts ..................................... 15
Circuit Diagram ...................................................... 16
Wiring Diagram — AWD — .................................... 17
Trouble Diagnosis Chart for Symptoms ................. 20
AWD Control Unit Input/Output Signal Reference
Values .................................................................... 20AWD CONTROL UNIT INSPECTION TABLE ..... 20
CONSULT-II Function (ALL MODE AWD/4WD) ..... 21
FUNCTION .......................................................... 21
CONSULT-II SETTING PROCEDURE ................ 22
SELF-DIAG RESULT MODE ............................... 22
DATA MONITOR MODE ...................................... 24
ACTIVE TEST MODE ......................................... 25
AWD CONTROL UNIT PART NUMBER ............. 25
TROUBLE DIAGNOSIS FOR SYSTEM .................... 26
Power Supply Circuit for AWD Control Unit ............ 26
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 26
DIAGNOSTIC PROCEDURE .............................. 26
AWD Control Unit ................................................... 27
DIAGNOSTIC PROCEDURE .............................. 27
ABS System ........................................................... 27
DIAGNOSTIC PROCEDURE .............................. 27
AWD Solenoid ........................................................ 28
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 28
DIAGNOSTIC PROCEDURE .............................. 28
COMPONENT INSPECTION .............................. 30
AWD Actuator Relay ............................................... 31
CONSULT-II REFERENCE VALUE IN DATA
MONITOR MODE ................................................ 31
DIAGNOSTIC PROCEDURE .............................. 31
Engine Control Signal ............................................. 32
DIAGNOSTIC PROCEDURE .............................. 32
CAN Communication Line ...................................... 32
DIAGNOSTIC PROCEDURE .............................. 32
TROUBLE DIAGNOSIS FOR SYMPTOMS .............. 33
AWD Warning Lamp Does Not Turn ON When The
Ignition Switch Is Turned to ON .............................. 33
DIAGNOSTIC PROCEDURE .............................. 33
AWD Warning Lamp Does Not Turn OFF Several
Seconds after Engine Started ................................. 33
DIAGNOSTIC PROCEDURE .............................. 33
Heavy Tight-Corner Braking Symptom Occurs
When The Vehicle Is Driven and The Steering Wheel
Is Turned Fully to Either Side after The Engine Is

TF-4
PRECAUTIONS
Revision: 2007 April2007 M35/M45
Service Notice or PrecautionsNDS000D5

Do not reuse transfer fluid, once it has been drained.

Check the fluid level or replace the fluid only with the vehicle parked on level ground.

During removal or installation, keep inside of transfer clear of dust or dirt.

Replace all tires at the same time. Always use tires of the proper size and the same brand and pattern.
Fitting improper size and unusual wear tires applies excessive force to vehicle mechanism and can cause
longitudinal vibration.

Disassembly should be done in a clean work area, it is preferable to work in dustproof area.

Before proceeding with disassembly, thoroughly clean the transfer. It is important to prevent the internal
parts from becoming contaminated by dirt or other foreign matter.

All parts should be carefully cleaned with a general purpose, non-flammable solvent before inspection or
reassembly.

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

Check appearance of the disassembled parts for damage, deformation, and unusual wear. Replace them
with a new ones if necessary.

Gaskets, seals and O-rings should be replaced any time when the transfer is disassembled.

In principle, tighten bolts or nuts gradually in several steps working diagonally from inside to outside. If
tightening sequence is specified, use it.

Observe the specified torque when assembling.

Clean and flush the parts sufficiently and blow-dry them.

Be careful not to damage sliding surfaces and mating surfaces.

Clean innerparts with lint-free cloth or towels. Do not use cotton work gloves and rags to prevent adhering
fibers.

TF-8
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
Revision: 2007 April2007 M35/M45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNDS000D8
Use the chart below to help you find the cause of the symptom. The numbers indicate the order of the inspec-
tion. If necessary, repair or replace these parts.
Reference pageTF-9TF-45TF-45TF-51TF-51TF-51
SUSPECTED PARTS
(Possible cause)
TRANSFER FLUID (Level low)
TRANSFER FLUID (Wrong)
TRANSFER FLUID (Level too high)
LIQUID GASKET (Damaged)
OIL SEAL (Worn or damaged)
GEAR (Worn or damaged)
BEARING (Worn or damaged)
TRANSFER CASE (Damaged)
SymptomNoise 1 2 3 3 3
Transfer fluid leakage 4 1 2 2 3

TRANSFER FLUID
TF-9
C
E
F
G
H
I
J
K
L
MA
B
TF
Revision: 2007 April2007 M35/M45
TRANSFER FLUIDPFP:31001
ReplacementNDS000D9
DRAINING
1. Run the vehicle to warm up the transfer unit sufficiently.
2. Stop the engine, and remove the drain plug to drain the transfer
fluid.
CAUTION:
When draining fluid, protect exhaust tube flange with cover.
3. Apply sealant to drain plug. Install drain plug on transfer and
tighten to the specified torque. Refer to TF-45, "
COMPO-
NENTS" .

Use Genuine Silicone RTV or equivalent. Refer to GI-47,
"Recommended Chemical Products and Sealants" .
CAUTION:
Remove old sealant adhering to mounting surfaces. Also
remove any moisture, oil, or foreign material adhering to application and mounting surfaces.
FILLING
1. Remove filler plug and add transfer fluid until fluid level reaches
the specified limit near filler plug mounting hole.
CAUTION:
Carefully fill the fluid. (Fill up for approx. 3 minutes.)
2. Leave the vehicle for 3 minutes, and check the fluid level again.
3. Set a new gasket onto filler plug and install it on transfer and
tighten to the specified torque. Refer to TF-45, "
COMPO-
NENTS" .
CAUTION:
Do not reuse gasket.
InspectionNDS000DA
FLUID LEAKAGE AND FLUID LEVEL
1. Check if fluid is leaking from transfer or around it.
2. Check fluid level from filler plug mounting hole as shown in the
figure.
CAUTION:
Never start engine while checking fluid level.
3. Before installing filler plug, set a new gasket. Install filler plug on
transfer and tighten to the specified torque. Refer to TF-45,
"COMPONENTS" .
CAUTION:
Do not reuse gasket.
SDIA2087E
Fluid capacity
: Approx. 1.25 (2-5/8 US pt, 2-1/4 lmp pt)
SDIA2028E
SDIA2028E

TF-10
AWD SYSTEM
Revision: 2007 April2007 M35/M45
AWD SYSTEMPFP:41650
Power Transfer DiagramNDS000DB
System DescriptionNDS000DC
DESCRIPTION

Electronic control allows optimal distribution of torque to front/rear wheels to match road conditions.

Makes possible stable driving, with no wheel spin, on snowy roads or other slippery surfaces.

On roads which do not require AWD, it contributes to improved fuel economy by driving in conditions close
to rear-wheel drive.

Sensor inputs determine the vehicle's turning condition, and in response tight cornering/braking are con-
trolled by distributing optimum torque to front wheels.
NOTE:

When driving, if there is a large difference between front and rear wheel speed which continues for a long
time, fluid temperature of drive system parts becomes too high and AWD warning lamp flashes rapidly.
(When AWD warning lamp flashes, vehicle changes to rear-wheel drive conditions.) Also, optional distri-
bution of torque sometimes becomes rigid before lamp flashes rapidly, but it is not malfunction.

If AWD warning lamp is flashing rapidly, stop vehicle and allow it to idle for some time. Flashing will stop
and AWD system will be restored.

When driving, AWD warning lamp may flash slowly if there is a significant difference in diameter of the
tires. At this time, vehicle performance is not fully available and cautious driving is required. (Continues
until engine is turned OFF.)

If the warning lamp flashes slowly during driving but remains OFF after engine is restarted, the system is
normal. If it again flashes slowly after driving for some time, vehicle must be inspected.

When the difference of revolution speed between the front and rear wheel the shift occasionally changes
to direct 4-wheel driving conditions automatically. This is not malfunction.
SDIA1611E

TF-40
FRONT OIL SEAL
Revision: 2007 April2007 M35/M45
FRONT OIL SEALPFP:38189
Removal and InstallationNDS000E1
REMOVAL
1. Remove the drain plug to drain the transfer fluid. Refer to TF-9, "Replacement" .
2. Remove the front propeller shaft. Refer to PR-4, "
FRONT PROPELLER SHAFT" .
3. Remove front oil seal using a flat-bladed screwdriver.
CAUTION:
Be careful not to damage the front case and front drive
shaft.
INSTALLATION
1. Apply ATF to front oil seal, install it with a drift until the end face
of front case.
CAUTION:

Do not reuse front oil seal.

When installing, do not incline front oil seal.
2. Install front propeller shaft. Refer to PR-4, "
FRONT PROPEL-
LER SHAFT" .
3. Install transfer fluid, check fluid level and for fluid leakage. Refer
to TF-9, "
Inspection" .
SDIA1782E
Tool number : ST27862000 ( — )
SDIA1783E

TF-42
REAR OIL SEAL
Revision: 2007 April2007 M35/M45
INSTALLATION
1. Apply ATF to rear oil seal, install it with a drifts.
CAUTION:

Do not reuse rear oil seal.

When installing, do not incline rear oil seal.
2. Align the matching mark of mainshaft with the mark of compan-
ion flange, then install the companion flange.
3. Using a flange wrench, install the self-lock nut of companion
flange and tighten to the specified torque. Refer to TF-45,
"COMPONENTS" .
CAUTION:
Do not reuse self-lock nut.
4. Install the rear propeller shaft. Refer to PR-6, "
REAR PROPEL-
LER SHAFT" .
5. Check fluid level. Refer to TF-9, "
Inspection" . Dimension A : 6.7 - 7.3 mm (0.264 - 0.287 in)
Tool number A: ST30720000 (J-25405)
B: KV40104830 ( — )
PDIA0292E
SDIA2378E
PDIA0245E

AIR BREATHER HOSE
TF-43
C
E
F
G
H
I
J
K
L
MA
B
TF
Revision: 2007 April2007 M35/M45
AIR BREATHER HOSEPFP:31098
Removal and InstallationNDS000E3
Refer to the figure for air breather hose removal and installation information.
CAUTION:

Make sure there are no pinched or restricted areas on the air breather hose caused by bending or
winding when installing it.

Be sure to insert air breather hose to transfer tube (metal connector) until hose end reaches the
tube's base and another hose end reaches the tube bend R portion of A/T fluid charging pipe.
SDIA2408E