2007 INFINITI M35 tires

TROUBLE DIAGNOSIS
STC-9
[EPS]
C
D
E
F
H
I
J
K
L
MA
B
STC
Revision: 2007 April2007 M35/M45
For Fast and Accurate Trouble DiagnosisNGS000E1
Check the following items with the vehicle stopped

Is air pressure and size of tires proper?

Is the specified part used for the steering wheel?

Is control unit a genuine part?

Are there any fluid leakage from steering gear assembly, power steering oil pump, and hydraulic pipes,
etc? Refer to PS-8, "
Checking Fluid Leakage" .

Is the fluid level proper? Refer to PS-8, "Checking Fluid Level" .

Is the wheel alignment adjusted properly? Refer to FSU-6, "Wheel Alignment Inspection" (2WD), FSU-24,
"Wheel Alignment Inspection" (AWD).

Are there any damage or modification to suspension or body resulting in increased weight or altered
ground clearance?

Check each link installation condition of suspension and axle.

Check each connector connection condition.
Check the following items while driving the vehicle

Check conditions when the malfunction occurred (5W 1H).

Is the engine condition normal?
Basic InspectionNGS000E2
POWER SUPPLY CIRCUIT TERMINAL LOOSENESS AND BATTERY
Check battery terminals for looseness on both positive and negative ones and ground connection. Also make
sure that battery voltage does not drop.
Inspection: Power Steering Control Unit Power Supply Circuit and GroundNGS000E3
1. CHECK POWER STEERING CONTROL UNIT CONNECTOR
Turn ignition switch OFF, disconnect power steering control unit harness connector, and check terminal for
deformation, disconnection, looseness, etc.
OK or NG
OK >> GO TO 2.
NG >> Connector terminal connection is loose, damaged, open, or shorted. Repair or replace the termi-
nal.
2. CHECK POWER STEERING CONTROL UNIT GROUND CIRCUIT
Disconnect power steering control unit harness connector M8, and
then check continuity between power steering control unit harness
connector M8 and ground.
OK or NG
OK >> GO TO 3.
NG >> Ground circuit open or shorted. Repair or replace any
inoperative parts. Terminal 2 – Ground : Continuity exist.
SGIA1231E

TROUBLE DIAGNOSIS
STC-27
[RAS]
C
D
E
F
H
I
J
K
L
MA
B
STC
Revision: 2007 April2007 M35/M45
STANDARD BY CONSULT-II
CAUTION:
The output signal indicates the RAS control unit calculation data. The normal values will be displayed
even in the event that the output circuit (harness) is open.
CONSULT-II Function (RAS/HICAS)NGS000EG
FUNCTION
CONSULT-II can display each self-diagnostic item using the diagnostic test modes shown following.
Monitor item Condition Reference values
VHCL SPEED SE [km/h] or [mph] Ignition switch ON or engine running Almost in accordance with the speedome-
ter display. It is not a malfunction, through
it might not be corresponding just after
ignition switch is turned ON.
STEERING ANG [°]Turning steering wheel clockwise or coun-
terclockwise.Displays the angle when the steering
wheel turns from the neutral position
ENGINE SPEED [rpm] Engine runningAlmost in accordance with tachometer dis-
play
POWER STR SOL [A]Accelerate the vehicle from 0 to 100 km/h
(0 to 62 MPH)0 km/h (0 MPH): Approx. 1.10 A
100 km/h (62 MPH): Approx. 0.54 A
RR ST ANG-MAI [V]
Perform the ACTIVE TEST and stroke the
actuator (with tires off the ground)Neutral: Approx. 2.4 V
Turn steering wheel to right for full stroke:
Approx. 4.4 V
Turn steering wheel to left for full stroke:
Approx. 0.4 V RR ST ANG-SUB [V]
RR ST ANG-VOL [V]
Ignition switch ON or engine runningApprox. 5 V
C/U VOLTAGE [V]Battery voltage (Approx. 12 V)
MOTOR VOLTAGE [V] Battery voltage (Approx. 12V)
MOTOR CURRENT [A]Perform the ACTIVE TEST and stroke the
actuator.It is normal when there is the current out-
put at stroke
MTR CRNT OPE [A]Turning steering wheel clockwise or coun-
terclockwise while ignition switch is ON or
running the engineNeutral (Steering force is zero and straight-
ahead position): Approx. 0 A
The value is changed according to steering
left or right
RR ANGLE OPE [°]RAS actuator assembly turned full right Approx. 1°
RAS actuator assembly neutral Approx. 0°
RAS actuator assembly turned full left Approx. - 1°
STOP LAMP SW [ON/OFF] Depressing or releasing brake pedalBrake pedal depressed: ON
Brake pedal not depressed: OFF
HICAS RELAY [ON/OFF]
Ignition switch ON or engine runningIgnition switch ON: ON
FAIL SAFE [ON/OFF] Not activated
WARNING LAMP (ON/OFF)RAS warning lamp ON: ON
RAS warning lamp OFF: OFF
Diagnostic test mode Function Reference page
SELF-DIAG RESULTSReceives self-diagnosis results from RAS control unit and
indicates DTCs.STC-28, "
SELF-DIAG
RESULT MODE"
DATA MONITORReceives input/output signals from RAS control unit and
indicates and stores them to facilitate locating cause of mal-
functions.STC-30, "DATA MONI-
TOR MODE"
CAN DIAG SUPPORT MNTRMonitors transmitting/receiving status of CAN communica-
tion.LAN-44, "CAN Diagnos-
tic Support Monitor"
ACTIVE TESTSends command to RAS actuator to change output signals
and check operation of output system.STC-30, "ACTIVE TEST
MODE"
ECU PART NUMBER Displays RAS control unit part number.STC-30, "RAS CONTROL
UNIT PART NUMBER"

STC-32
[RAS]
TROUBLE DIAGNOSIS
Revision: 2007 April2007 M35/M45
For Fast and Accurate Trouble DiagnosisNGS000EN
Check the following items with the vehicle stopped

Is air pressure and size of tires proper?

Is the specified part used for the steering wheel?

Is control unit a genuine part?

Are there any fluid leakage from steering gear assembly, power steering oil pump, and hydraulic pipes,
etc? Refer to PS-8, "
Checking Fluid Leakage" .

Is the fluid level proper? Refer to PS-8, "Checking Fluid Level" .

Is the wheel alignment is adjusted properly? Refer to FSU-6, "Wheel Alignment Inspection" (2WD), FSU-
24, "Wheel Alignment Inspection" (AWD).

Are there any damage or modification to suspension or body resulting in increased weight or altered
ground clearance?

Check each link installation condition of suspension and axle.

Is the battery voltage proper?

Check each connector connection condition.
Check the following items while driving the vehicle

Conditions when the error occurred (5W 1H).

Is the engine is normal?
Basic InspectionNGS000EO
BASIC INSPECTION 1: POWER SUPPLY CIRCUIT TERMINAL LOOSENESS AND BATTERY
Check battery terminals for looseness on both positive and negative ones and ground connection. Also make
sure that battery voltage does not drop.
BASIC INSPECTION 2: RAS WARNING LAMP INSPECTION
1. Make sure RAS warning lamp turns on when ignition switch is turned ON.

If it does not turn on, refer to STC-33, "Trouble Diagnosis Chart" .
2. Make sure that RAS warning lamp turns off when the engine is started after ignition switch is turned ON. If
it does not turn off, perform self-diagnosis. Refer to STC-28, "
SELF-DIAG RESULT MODE" .
3. Always erase DTC memory after completing self-diagnosis. Refer to STC-29, "
How to Erase Self-Diag-
nostic Results" .
BASIC INSPECTION 3: RAS CONTROL UNIT POWER SUPPLY CIRCUIT AND GROUND CIR-
CUIT INSPECTION
1. CHECK RAS CONTROL UNIT CONNECTOR
Turn ignition switch OFF, disconnect RAS control unit harness connector, and check terminal for deformation,
disconnection, looseness, etc.
OK or NG
OK >> GO TO 2.
NG >> Poor connection of connector terminal. Repair or replace the terminal.
2. CHECK RAS CONTROL UNIT GROUND CIRCUIT
1. Disconnect RAS control unit harness connector B476, and then
check continuity between RAS control unit harness connector
B476 and ground.
OK or NG
OK >> GO TO 3.
NG >> Ground circuit open or shorted. Repair or replace any
inoperative parts. Terminal 34 – Ground : Continuity should exit.
SGIA1244E

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-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-12
AWD SYSTEM
Revision: 2007 April2007 M35/M45
AWD WARNING LAMP
Turns ON when there is a malfunction in AWD system. It indicates that fail-safe mode is engaged and vehicle
change to rear-wheel drive or shifting driving force-AWD (Front-wheels still have some driving torque).
Also turns ON when ignition switch is turned ON, for purpose of lamp check. Turns OFF approximately for 1
seconds after the engine starts if system is normal.
AWD Warning Lamp Indication
System DiagramNDS000DD
Condition AWD warning lamp
Lamp checkTurns ON when ignition switch is turned ON. Turns OFF
approx. 1 second after engine start.
AWD system malfunctionON
Protection function is activated due to heavy load to electric con-
trolled coupling. (AWD system is not malfunctioning and AWD system
changes to 2WD mode.)Rapid flashing: 2 times/second
(Flashing in approx. 1 minute and then turning OFF)
Large difference in diameter of front/rear tiresSlow flashing: 1 time/2 seconds
(Continuing to flash until turning ignition switch OFF)
Other than above (system normal) OFF
SDIA3134E

TROUBLE DIAGNOSIS FOR SYMPTOMS
TF-37
C
E
F
G
H
I
J
K
L
MA
B
TF
Revision: 2007 April2007 M35/M45
3. CHECK AWD SOLENOID
Check AWD solenoid. Refer to TF-30, "
COMPONENT INSPECTION" .
OK or NG
OK >> GO TO 4.
NG >> Replace electric controlled coupling for malfunction of AWD solenoid. Refer to TF-45, "
Disassem-
bly and Assembly" .
4. CHECK AWD CONTROL UNIT
Check AWD control unit input/output signal. Refer to TF-20, "
AWD Control Unit Input/Output Signal Reference
Va l u e s" .
OK or NG
OK >> GO TO 5.
NG >> Check AWD control unit pin terminals for damage or loose connection with harness connector. If
any items are damaged, repair or replace damaged parts.
5. SYMPTOM CHECK
Check again.
OK or NG
OK >>INSPECTION END
NG >> Replace electric controlled coupling for mechanical malfunction (mechanical engagement of
clutch is not possible.). Refer to TF-45, "
Disassembly and Assembly" .
While Driving, AWD Warning Lamp Flashes Rapidly (When Flashing in Approx.
1 Minute and Then Turning OFF)
NDS000DY
NOTE:
Rapid flashing: 2 times/second
This symptom protects drivetrain parts when a heavy load is applied to the electric controlled coupling and
multiple disc clutch temperature increases. Also, optional distribution of torque sometimes becomes rigid
before lamp flashes rapidly. Both cases are not malfunction.
When this symptom occurs, stop vehicle and allow it to idle for some times. Flashing will stop and system will
be restored.
While Driving, AWD Warning Lamp Flashes Slowly (When Continuing to Flash
until Turning Ignition Switch OFF)
NDS000DZ
NOTE:
Slow flashing: 1 time/2 seconds
DIAGNOSTIC PROCEDURE
1. CHECK TIRE
Check the following.

Tire pressure

Wear condition

Longitudinal tire size (There is no difference between longitudinal tires.)
OK or NG
OK >> GO TO 2.
NG >> Drive at vehicle speed of 20 km/h (12 MPH) or more for 5 seconds or more after repairing or
replacing damaged parts. (Initialize improper size tire information.)

WT-1
ROAD WHEELS & TIRES
E SUSPENSION
CONTENTS
C
D
F
G
H
I
J
K
L
M
SECTION WT
A
B
WT
Revision: 2007 April2007 M35/M45
ROAD WHEELS & TIRES
PRECAUTIONS .......................................................... 3
Precautions .............................................................. 3
PREPARATION ........................................................... 4
Special Service Tools ............................................... 4
Commercial Service Tools ........................................ 4
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING ................................................ 5
NVH Troubleshooting Chart ..................................... 5
ROAD WHEEL ............................................................ 6
Inspection ................................................................. 6
ALUMINUM WHEEL ............................................. 6
STEEL WHEEL ..................................................... 6
ROAD WHEEL AND TIRE ASSEMBLY ..................... 7
Balancing Wheels (Bonding Weight Type) ............... 7
REMOVAL ............................................................. 7
WHEEL BALANCE ADJUSTMENT ...................... 7
Rotation .................................................................... 8
TIRE PRESSURE MONITORING SYSTEM ............... 9
System Components ................................................ 9
System Description .................................................. 9
TRANSMITTER ..................................................... 9
RECEIVER .......................................................... 10
LOW TIRE PRESSURE WARNING CONTROL
UNIT .................................................................... 10
LOW TIRE PRESSURE WARNING LAMP ......... 10
DISPLAY UNIT ..................................................... 11
Can Communication ................................................ 11
TROUBLE DIAGNOSES .......................................... 12
How to Perform Trouble Diagnoses ....................... 12
BASIC CONCEPT ............................................... 12
Schematic .............................................................. 13
Wiring Diagram — T/WARN — .............................. 14
Low Tire Pressure Warning Control Unit Input/Out-
put Signal Standard ................................................ 17
ID Registration Procedure ...................................... 18
ID REGISTRATION WITH ACTIVATION TOOL ... 18
ID REGISTRATION WITHOUT ACTIVATION
TOOL .................................................................. 18
Transmitter Wake Up Operation ............................. 19
WITH TRANSMITTER ACTIVATION TOOL ........ 19CONSULT-II Function (AIR PRESSURE MONI-
TOR) ....................................................................... 19
DESCRIPTION .................................................... 19
CONSULT-II SETTING PROCEDURE ................ 19
WORK SUPPORT MODE ................................... 20
SELF-DIAG RESULT MODE ............................... 20
DATA MONITOR MODE ...................................... 21
ACTIVE TEST MODE ......................................... 22
LOW TIRE PRESSURE WARNING CONTROL
UNIT PART NUMBER ......................................... 22
Diagnosis Procedure with Warning Lamp Function
(Without CONSULT-II) ............................................ 22
DESCRIPTION .................................................... 22
FUNCTION .......................................................... 22
LOW TIRE PRESSURE WARNING LAMP DIAG-
NOSTIC CHART .................................................. 23
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ...................................................... 25
INTRODUCTION ................................................. 25
WORK FLOW ...................................................... 25
Preliminary Check .................................................. 26
Trouble Diagnosis Chart ......................................... 27
SELF-DIAGNOSIS .............................................. 27
DIAGNOSIS CHART BY SYMPTOM .................. 28
TROUBLE DIAGNOSIS FOR SYSTEM .................... 29
Transmitter no Data ................................................ 29
MALFUNCTION CODE NO. 21, 22, 23, 24 ......... 29
Receiver Data Error ................................................ 30
MALFUNCTION CODE NO. 25, 26, 27, 28 ......... 30
Transmitter Pressure Data Error ............................. 31
MALFUNCTION CODE NO. 35, 36, 37, 38 ......... 31
Transmitter Function Code Error ............................ 32
MALFUNCTION CODE NO. 41, 42, 43, 44 ......... 32
Transmitter Battery Voltage Low ............................. 32
MALFUNCTION CODE NO. 45, 46, 47, 48 ......... 32
Receiver ID No Registration ................................... 33
MALFUNCTION CODE NO. 51 ........................... 33
Vehicle Speed Signal .............................................. 33
MALFUNCTION CODE NO. 52 ........................... 33
Control Unit (EEPROM) Malfunction ...................... 34