air suspension INFINITI M35 2007 Factory Owner's Manual

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

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

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING
WT-5
C
D
F
G
H
I
J
K
L
MA
B
WT
Revision: 2007 April2007 M35/M45
NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartNES000JN
Use chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: ApplicableReference page
FAX-5
, RAX-5WT-6WT-7WT-41WT-8—
—
WT-41
NVH in PR section.
NVH in FFD and RFD section.
NVH in FAX and FSU sections.
NVH in RAX and RSU sections.
Refer to TIRES in this chart.
Refer to ROAD WHEEL in this chart.
NVH in FAX, RAX section.
NVH in BR section.
NVH in PS section.
Possible cause and SUSPECTED PARTS
Improper installation, looseness
Out-of-round
Unbalance
Incorrect tire pressure
Uneven tire wear
Deformation or damage
Non-uniformity
Incorrect tire size
PROPELLER SHAFT
DIFFERENTIAL
FRONT AXLE AND FRONT SUSPENSION
REAR AXLE AND REAR SUSPENSION
TIRES
ROAD WHEELS
DRIVE SHAFT
BRAKE
STEERING
SymptomTIRESNoise××××××× ×××× ××××
Shake×××××× ×× ×× ××××
Vibration×××××××
Shimmy×××××××× ×× × ××
Judder×××××× × ×× × ××
Poor quality ride or
handling×××××× × × ××
ROAD
WHEELNoise××× × ××××× ×××
Shake××× × × ××× ×××
Shimmy, Judder××× × ××× ××
Poor quality ride or
handling××× × ×××