2005 INFINITI FX35 steering

BL-146
INTELLIGENT KEY SYSTEM
Revision: 2005 July 2005 FX
4. CHECK STEERING LOCK UNIT COMMUNICATION CIRCUIT
1. Disconnect Intelligent Key unit and steering lock unit connectors.
2. Check continuity between Intelligent Key unit connector M34 terminals 1, 31, 32 and steering lock unit connector M26 terminals 2, 3, 4.
3. Check continuity between steering lock unit connector M26 ter- minals 2, 3, 4 and ground.
OK or NG
OK >> Replace steering lock unit.

After replacing steering lock unit, perform registration procedure. Refer to “CONSULT-II Opera-
tion Manual NATS-IVIS/NVIS”.
NG >> Repair or replace harness between steering lock unit and Intelligent Key unit.
Check Stop Lamp SwitchAIS004NM
1. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Disconnect stop lamp switch connector.
2. Check voltage between stop lamp switch connector E210 termi- nal 1 (GY) and ground.
OK or NG
OK >> GO TO 2.
NG >> Repair or replace harness between stop lamp switch and fuse.
2. CHECK STOP LAMP SWITCH OPERATION
Check continuity between stop lamp switch connector E210 terminal
1 and 2.
OK or NG
OK >> GO TO 3.
NG >> Replace stop lamp switch. 1 (R/W) - 2 (R/W) : Continuity should exist.
31 (Y/B) - 4 (Y/B) : Continuity should exist.
32 (R/B) - 3 (R/B) : Continuity should exist.
2 (R/W) - Ground : Continuity should not exist. 3 (R/B) - Ground : Continuity should not exist.4 (Y/B) - Ground : Continuity should not exist.
PIIA6799E
1 (GY) - Ground : Battery voltage
PIIA6811E
1 - 2
Brake pedal depressed : Continuity should exist.
Brake pedal not
depressed : Continuity should not exist.
PIIA6800E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) BL-215
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Revision: 2005 July 2005 FX
System CompositionAIS004PC
The immobilizer function of the IVIS (NATS) consists of the following:

Ignition key (models without Intelligent Key system)

Mechanical key (models with Intelligent Key system)

NATS antenna amp.

Steering lock unit. (models with Intelligent Key system)

BCM

Intelligent Key unit (models with Intelligent Key system)

Engine control module (ECM)

Security indicator
NOTE:
The communication between ECM, BCM and/or Intelligent Key unit uses the CAN communication sys-
tem.
ECM Re-Communicating FunctionAIS004PD
Performing following procedure can automatically perform re-communication of ECM and BCM or Intelligent
Key unit, but only when the ECM has been replaced with a new one (*1).
*1: New one means a virgin ECM which has never been energized on-board.
(In this step, initialization procedure by CONSULT-II is not necessary)
NOTE:

When registering new Key IDs or replacing the ECM other than brand new, refer to CONSULT-II
Operation Manual NATS-IVIS/NVIS.

If multiple keys are attached to the key holder, separate them before work.

Distinguish keys with unregistered key ID from those with registered ID.
1. Install ECM.
2. Using a registered key (*2), turn ignition switch to “ON”. *2: To perform this step, use the key that has been used before performing ECM replacement.
3. Maintain ignition switch in “ON” position for at least 5 seconds.
4. Turn ignition switch to “OFF”.
5. Start engine. If engine can be started, procedure is completed.
If engine cannot be started, refer to CONSULT-II Operation Manual NATS-IVIS/NVIS and initialize control
unit.
PIIA6948E

IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS) BL-219
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Revision: 2005 July 2005 FX
Terminals and Reference Value for Steering Lock Unit/with Intelligent Key Sys-
tem
AIS004PF
Terminals and Reference Value for Intelligent Key Unit/with Intelligent Key Sys-
tem
AIS004PG
Te r -
minal
No. Wire
color Signal Designation Measuring condition
Voltage (V)
(Approx.)
Ignition knob
position Operation or conditions
1 L/R Power source (Fuse) LOCK — Battery voltage
2R/W Steering lock unit
power supply LOCK — 5
3R/B Steering lock unit com-
munication signal LOCK Press ignition knob with Intelligent Key
inside vehicle.
Other than the above 5
4Y/B Steering lock unit
ground —— 0
SIIA1911J
Te r -
minal
No. Wire
color Signal designation Measuring condition
Voltage (V)
(Approx.)
Ignition knob
position Operation or conditions
1R/W Steering lock unit
power supply LOCK — 5
2 L CAN-H — — —
3 R CAN-L — — —
6G/R Ignition power supply
(ON) ON Ignition knob ON or START position Battery voltage
7 B/W Key switch LOCK Insert mechanical key into ignition key
cylinder. Battery voltage
Remove mechanical key from ignition
key cylinder. 0
11 L/R Power source (Fuse) — — Battery voltage
12 B Ground — — 0
27 L/W Ignition knob switch — Press ignition knob. Battery voltage
Return ignition knob to LOCK position. 0
31 Y/B Steering lock unit
ground —— 0
32 R/B Steering lock unit com-
munication signal LOCK Press ignition knob with Intelligent Key
inside vehicle.
Other than the above 5
SIIA1911J

BL-234
IVIS (INFINITI VEHICLE IMMOBILIZER SYSTEM-NATS)
Revision: 2005 July 2005 FX
4. CHECK BCM FUNCTION
1. Connect security indicator lamp connector.
2. Disconnect BCM connector M3.
3. Check voltage between BCM connector M3 terminal 23 (G/OR) and ground.
OK or NG
OK >> BCM is malfunctioning.

Replace BCM.

Perform initialization with CONSULT-II.

For initialization, refer to “CONSULT-II Operation
Manual NATS-IVIS/NVIS”.
NG >> Check the following.

Harness for open or short between security indicator lamp and BCM.

Indicator lamp condition
Removal and Installation NATS Antenna Amp.AIS004PT
REMOVAL
CAUTION:
Before servicing SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 min-
utes.
1. Remove the steering column cover. Refer to IP-11, "
Removal and Installation" .
2. Disconnect the NATS antenna amp. connect, remove the screw and NATS antenna amp.
INSTALLATION
Install in the reverse order of removal. 23 (G/OR) – Ground : Battery voltage
PIIA6150E
PIIA6064E

NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTING BR-5
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NOISE, VIBRATION AND HARSHNESS (NVH) TROUBLESHOOTINGPFP:00003
NVH Troubleshooting ChartAFS001MS
Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.
×: Applicable
Reference page
BR-20
,
BR-26
BR-20
, BR-26
BR-20
, BR-26—
—
BR-24, BR-30—
—
—
BR-24, BR-31

—
NVH in PR section
NHV in RFD section
NVH in FAX, RAX and FSU, RSU section
NVH in WT section
NVH in WT section
NVH in RAX section
NVH in PS section
Possible cause and
SUSPECTED PARTS
Pads - damaged
Pads - uneven wear
Shims damaged
Rotor imbalance
Rotor damage
Rotor runout
Rotor deformation
Rotor deflection
Rotor rust
Rotor thickness variation
Drum out of round
PROPELLER SHAFT
DIFFERENTIAL
AXLE AND SUSPENSION
TIRES
ROAD WHEEL
DRIVE SHAFT
STEERING
Symptom BRAKE Noise
××× ×× ×××
××
Shake ×××××
××
Shimmy, Judder ××××××× ××× ×

BR-8
BRAKE PEDAL
Revision: 2005 July 2005 FX
REMOVAL
1. Remove front kicking plate (driver side). EI-38, "KICKING PLATE" .
2. Remove dash side finisher (driver side). EI-37, "
DASH SIDE FINISHER" .
3. Remove instrument lower panel (driver side). IP-18, "
INSTRUMENT PASSENGER LOWER PANEL" .
4. Remove steering column assembly. Refer to PS-12, "
Removal and Installation" .
5. Remove stop lamp switch and ASCD cancel switch (or brake switch) from pedal assembly.
6. Remove snap pin and clevis pin from brake booster clevis.
7. Remove mounting nuts and bolts from bracket, and remove pedal assembly from the vehicle.
INSPECTION AFTER REMOVAL

Make sure the rivets in the upper part of brake pedal are not
deformed.

Make sure sub bracket and slide plate are at least 4 mm (0.16
in) apart.

Check brake pedal for bend, damage, and cracks on the welded
parts. Replace the applicable part if a malfunction is detected.

Check clevis pin and resin stopper for damage and deformation.
If a malfunction is detected, replace clevis pin.
INSTALLATION
Note the following, and install in the reverse order of removal.

After installing brake pedal assembly to the vehicle, adjust brake pedal height.
1. Clevis pin 2. Snap pin 3. Brake pedal assembly
4. Stopper rubber 5. Pedal pad 6. ASCD cancel switch (Models with ASCD)
Brake switch (Models with ACC)
7. Stop lamp switch 8. Clip
SFIA0159E
PFIA0223E
SBR997

BRAKE PIPING AND HOSE BR-11
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Revision: 2005 July 2005 FX
BRAKE PIPING AND HOSEPFP:46210
Hydraulic CircuitAFS001MY
CAUTION:

All hoses and piping (tubes) must be free from excessive bending, twisting and pulling.

Make sure there is no interference with other parts when turning steering both clockwise and
counterclockwise.

The brake piping is an important safety part. If a brake fluid leak is detected, always disassemble
the parts. Replace applicable part with a new one, if necessary.

Be careful not to splash brake fluid on painted areas; it way cause paint damage. If brake fluid is
splashed on painted areas, wash it away with water immediately.

Do not bend or twist brake hose sharply, or strongly pull it.

When removing components, cover connections so that no dirt, dust, or other foreign matter gets
in.

Refill with new brake fluid “ DOT 3 ”.

Do not reuse drained brake fluid.
Removal and Installation of Front Brake Piping and Brake Hose AFS001MZ
REMOVAL
1. Drain brake fluid. Refer to BR-9, "Drain and Refill" .
2. Using a flare nut wrench, remove brake tube from brake hose.
3. Remove union bolt and remove brake hose from caliper assembly.
4. Remove lock plate and remove brake hose from the vehicle.
INSTALLATION
1. Install brake hose by aligning with the protrusion on caliper assembly, and tighten union bolt to the specified torque.
NOTE:
Do not reuse copper washer.
2. Install brake hose to brake tube, partially tighten flare nut as far as possible by hand, then secure it to bracket with lock plate.
3. Using a flare nut wrench, tighten flare nut to the specified torque.
4. Refill brake fluid and bleed air. Refer to BR-10, "
Bleeding Brake
System" .
SFIA1941E
SFIA1204E

BRC-1
BRAKE CONTROL SYSTEM
F BRAKES
CONTENTS
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SECTION BRC
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BRC
Revision: 2005 July 2005 FX
BRAKE CONTROL SYSTEM
VDC/TCS/ABS
PRECAUTIONS .......................................................... 3
Precautions for Supplemental Restraint System
(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-
SIONER” ............................................................. ..... 3
Precautions for Brake System ............................. ..... 3
Precautions for Brake Control ............................. ..... 3
PREPARATION ...................................................... ..... 5
Special Service Tools .......................................... ..... 5
Commercial Service Tools ................................... ..... 5
ON-VEHICLE SERVICE ........................................ ..... 6
Adjustment of Steering Angle Sensor Neutral Posi-
tion ...................................................................... ..... 6
Calibration of Decel G Sensor (AWD Model) ...... ..... 6
SYSTEM DESCRIPTION ....................................... ..... 8
System Diagram .................................................. ..... 8
VDC Function ...................................................... ..... 8
TCS Function ...................................................... ..... 8
ABS Function ...................................................... ..... 8
EBD Function ...................................................... ..... 9
Fail-Safe Function ............................................... ..... 9
VDC / TCS SYSTEM ........................................ ..... 9
ABS, EBD SYSTEM ......................................... ..... 9
Hydraulic Circuit Diagram ................................... ... 10
CAN COMMUNICATION ....................................... ....11
System Description ............................................. .... 11
TROUBLE DIAGNOSIS ......................................... ... 12
How to Proceed with Diagnosis .......................... ... 12
BASIC CONCEPT ............................................ ... 12
DIAGNOSIS FLOWCHART ............................. ... 13
ASKING COMPLAINTS ................................... ... 14
EXAMPLE OF DIAGNOSIS SHEET ................ ... 14
Component Installation Location ......................... ... 15
Schematic ........................................................... ... 16
Wiring Diagram — VDC — .................................. ... 17
Control Unit Input/Output Signal Standard .......... ... 23
REFERENCE VALUE FROM CONSULT-II ...... ... 23
CONSULT-II Functions ........................................ ... 25
CONSULT-II MAIN FUNCTION ........................ ... 25
CONSULT-II BASIC OPERATION PROCEDURE ... 26
SELF-DIAGNOSIS ........................................... ... 27
DATA MONITOR .............................................. ... 30
ACTIVE TEST .................................................. ... 33
For Fast and Accurate Diagnosis ........................ ... 35
PRECAUTIONS FOR DIAGNOSIS .................. ... 35
Basic Inspection .................................................. ... 36
BASIC INSPECTION 1: BRAKE FLUID
AMOUNT, LEAKS, AND BRAKE PADS INSPEC-
TION ................................................................. ... 36
BASIC INSPECTION 2: POWER SYSTEM TER-
MINAL LOOSENESS AND BATTERY INSPEC-
TION ................................................................. ... 36
BASIC INSPECTION 3: ABS WARNING LAMP,
VDC OFF INDICATOR LAMP, SLIP INDICATOR
LAMP AND BRAKE WARNING LAMP INSPEC-
TION ................................................................. ... 37
Inspection 1: Wheel Sensor Circuit ..................... ... 37
Inspection 2: Engine System ............................... ... 39
Inspection 3: VDC/TCS/ABS Control Unit Circuit ... 40
Inspection 4: Pressure Sensor Circuit ................. ... 40
Inspection 5: Steering Angle Sensor Circuit ........ ... 42
Inspection 6: Yaw Rate/Side G Sensor (2WD
Model), Yaw Rate/Side/Decel G sensor (AWD Mod-
els) Circuit ............................................................ ... 44
Inspection 7: Solenoid and VDC Change-Over
Valve Circuit ......................................................... ... 46
Inspection 8: Actuator Motor Circuit .................... ... 47
Inspection 9: ABS Actuator and Electric Unit (Con-
trol Unit) Power Supply and Ground Circuit ......... ... 48
Inspection 10: Stop Lamp Switch Circuit ............. ... 50
Inspection 11: Brake Fluid Level Switch Circuit ... ... 51
Inspection 12: When “ST ANG SEN SIGNAL”
Appears on Self-diagnosis Results Display ......... ... 52
Inspection 13: When “DECEL G SEN SET” Appears
on Self-diagnostic Results Display (AWD Model) ... 52
Inspection 14: CAN Communication Circuit ........ ... 53
Component Inspection ......................................... ... 53
VDC OFF SWITCH .......................................... ... 53
Symptom 1: Excessive ABS Function Operation