2007 INFINITI FX35 ACC

BL-256
BODY REPAIR
Revision: 2006 July 2007 FX35/FX45
Precautions In Repairing High Strength SteelNIS001QD
High strength steel is used for body panels in order to reduce vehicle weight.
Accordingly, precautions in repairing automotive bodies made of high strength steel are described below:
HIGH STRENGTH STEEL (HSS) USED IN NISSAN VEHICLES
SP130 is the most commonly used HSS.
SP150 HSS is used only on parts that require much more strength. Tensile strength Nissan/Infiniti designation Major applicable parts
373 N/mm
2
(38kg/mm2 ,54klb/sq in) SP130

Front & rear side member assembly

Hoodledge assembly

Lower dash

Hood

Other reinforcements

BL-258
BODY REPAIR
Revision: 2006 July 2007 FX35/FX45

The spot weld on HSS panels is harder than that of an ordi-
nary steel panel.
Therefore, when cutting spot welds on a HSS panel, use a
low speed high torque drill (1,000 to 1,200 rpm) to increase
drill bit durability and facilitate the operation.
2. Precautions in spot welding HSS This work should be performed under standard working condi-
tions. Always note the following when spot welding HSS:

The electrode tip diameter must be sized properly according
to the metal thickness.

The panel surfaces must fit flush to each other, leaving no
gaps.

Follow the specifications for the proper welding pitch.
Unit:mm
PIIA0145E
PIIA0146E
PIIA0147E
Thickness (t) Minimum pitch (l)
0.6 (0.024)
0.8 (0.031)
1.0 (0.039)
1.2 (0.047)
1.6 (0.063)
1.8 (0.071) 10 (0.39) or over
12 (0.47) or over
18 (0.71) or over
20 (0.79) or over
27 (1.06) or over
31 (1.22) or over
PIIA0148E

BODY REPAIR BL-261
C
D E
F
G H
J
K L
M A
B
BL
Revision: 2006 July 2007 FX35/FX45

Front pillar butt joint can be determined anywhere within shaded
area as shown in the figure. The best location for the butt joint is
at position A due to the construction of the vehicle. Refer to the
front pillar section.

Determine cutting position and record distance from the locating
indent. Use this distance when cutting the service part. Cut outer
front pillar over 60 mm above inner front pillar cut position.

Prepare a cutting jig to make outer pillar easier to cut. Also, this
will permit service part to be accurately cut at joint position.

An example of cutting operation using a cutting jig is as follows.
1. Mark cutting lines. A: Cut position of outer pillar
B: Cut position of inner pillar
2. Align cutting line with notch on jig. Clamp jig to pillar.
3. Cut outer pillar along groove of jig. (At position A)
4. Remove jig and cut remaining portions.
5. Cut inner pillar at position B in same manner.
PIIA0150E
PIIA0151E
PIIA0152E
PIIA0153E

BR-24
FRONT DISC BRAKE
Revision: 2006 July 2007 FX35/FX45
DISC ROTOR INSPECTION
Visual Inspection
Check surface of disc rotor for uneven wear, cracks, and serious damage. If any of them is detected, replace
applicable part.
Runout Inspection
1. Using wheel nuts, fix disc rotor to wheels hub. (2 or more positions)
2. Using a dial indicator, check runout.
CAUTION:
Before measuring, make sure that wheel bearing axle end
play is within the specification. Refer to FA X - 4 , "
WHEEL
BEARING INSPECTION" (2WD models), FA X - 1 0 , "WHEEL
BEARING INSPECTION" (AWD models).
3. If runout is outside the limit, find the minimum runout point by shifting the mounting positions of disc rotor and wheel hub by
one hole.
4. If runout is still out of specification, turn rotor with on-car brake lathe (“MAD, DL-8700”, “AMMCO 700 and 705” or equivalent).
Thickness Inspection
Using a micrometer, check thickness of disc rotor. If thickness is out-
side the specification, replace disc rotor.
Brake Burnishing ProcedureNFS000OD
Burnish brake pad contact surfaces of disc rotor according to following procedure after refinishing or replacing
drums or rotors, after replacing pads or linings, or if a soft pedal occurs at very low mileage.
CAUTION:

Be careful of vehicle speed because brake does not operate easily until pad and disc rotor are
securely fitted.

Only perform this procedure under safe road and traffic conditions. Use extreme caution.
1. Drive vehicle on straight, flat road.
2. Depress brake pedal with the power to stop vehicle within 3 to 5 seconds until the vehicle stops.
3. Drive without depressing brake for a few minutes to cool brake.
4. Repeat steps 1 to 3 until pad and disc rotor are securely fitted. Measurement point
: At a point 10.0 mm (0.394 in)
from outer edge of disc.
Runout limit : 0.04 mm (0.0016 in) or less
SBR019B
Standard thickness : 34.0 mm (1.339 in)
Wear limit : 32.0 mm (1.260 in)
Maximum uneven wear
(measured at 8 positions) : 0.015 mm (0.0006 in)
or less
SBR020B

BR-30
REAR DISC BRAKE
Revision: 2006 July 2007 FX35/FX45
DISC ROTOR INSPECTION
Visual Inspection
Check surfaces of disc rotor for uneven wear, cracks, and serious damage. If a malfunction is detected,
replace applicable part.
Runout Inspection
1. Using wheel nuts, fix the disc rotor to wheels hub. (2 or more positions)
2. Using a dial indicator, check runout.
CAUTION:
Before measuring, make sure that wheel bearing axle end
play is within the specification. Refer to RAX-5, "
WHEEL
BEARING INSPECTION" .
3. If runout is outside the limit, find minimum runout point by shift- ing mounting positions of disc rotor and wheel hub by one hole.
Thickness Inspection
Using a micrometer, check thickness of disc rotor. If thickness is out-
side the specification, replace disc rotor.
Brake Burnishing ProcedureNFS000OE
Burnish the brake pad or lining contact surfaces of rotor according to following procedure after refinishing or
replacing drums or rotors, after replacing pads or linings, or if a soft pedal occurs at very low mileage.
CAUTION:

Be careful of vehicle speed because brake does not operate easily until pad and disc rotor are
securely fitted.

Only perform this procedure under safe road and traffic conditions. Use extreme caution.
1. Drive vehicle on straight, flat road.
2. Depress brake pedal with the power to stop vehicle within 3 to 5 seconds until the vehicle stops.
3. Drive without depressing brake for a few minutes to cool brake.
4. Repeat steps 1 to 3 until pad and disc rotor are securely fitted. Measurement point
: At a point 10 mm (0.394 in)
from outer edge of disc.
Runout limit : 0.05 mm (0.0020 in) or less
BRA0013D
Standard thickness : 16.0 mm (0.630 in)
Wear limit : 14.0 mm (0.551 in)
Maximum uneven wear
(measured at 8 positions) : 0.015 mm (0.0006 in) or
less
SBR020B

BRC-1
BRAKE CONTROL SYSTEM
F BRAKES
CONTENTS
C
D E
G H
I
J
K L
M
SECTION
A
B
BRC
Revision: 2006 July 2007 FX35/FX45
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 Models) .... ..... 7
SYSTEM DESCRIPTION ....................................... ..... 8
System Diagram .................................................. ..... 8
Functions ............................................................. ..... 8
VDC .................................................................. ..... 8
TCS .................................................................. ..... 8
ABS .................................................................. ..... 9
EBD .................................................................. ..... 9
Fail-Safe Function ............................................... ..... 9
VDC / TCS SYSTEM ........................................ ..... 9
ABS, EBD SYSTEM ......................................... ..... 9
Hydraulic Circuit Diagram ................................... ... 10
CAN Communication ........................................... ... 10
SYSTEM DESCRIPTION ................................. ... 10
TROUBLE DIAGNOSIS ......................................... ....11
Fail-Safe Function ............................................... .... 11
VDC/TCS SYSTEM .......................................... .... 11
ABS, EBD SYSTEM ......................................... .... 11
How to Proceed with Diagnosis .......................... .... 11
BASIC CONCEPT ............................................ .... 11
DIAGNOSIS FLOWCHART ............................. ... 12
ASKING COMPLAINTS ................................... ... 13
EXAMPLE OF DIAGNOSIS SHEET ................ ... 13
Component Installation Location ......................... ... 14
Schematic ........................................................... ... 15
Wiring Diagram — VDC — .................................. ... 16
Control Unit Input/Output Signal Standard .......... ... 22 REFERENCE VALUE FROM CONSULT-II ......
... 22
CONSULT-II Functions (ABS) ............................. ... 24
CONSULT-II MAIN FUNCTION ........................ ... 24
CONSULT-II SETTING PROCEDURE ............. ... 24
Self-Diagnosis ..................................................... ... 25
DESCRIPTION ................................................. ... 25
OPERATION PROCEDURE ............................. ... 25
ERASE MEMORY ............................................ ... 25
DISPLAY ITEM LIST ........................................ ... 26
Data Monitor ........................................................ ... 29
OPERATION PROCEDURE ............................. ... 29
DISPLAY ITEM LIST ........................................ ... 29
Active Test ........................................................... ... 31
OPERATION PROCEDURE ............................. ... 31
TEST ITEM ....................................................... ... 32
For Fast and Accurate Diagnosis ........................ ... 33
PRECAUTIONS FOR DIAGNOSIS .................. ... 33
Basic Inspection .................................................. ... 34
BRAKE FLUID AMOUNT, LEAKS, AND BRAKE
PADS INSPECTION ......................................... ... 34
POWER SYSTEM TERMINAL LOOSENESS
AND BATTERY INSPECTION .......................... ... 34
ABS WARNING LAMP, VDC OFF INDICATOR
LAMP, SLIP INDICATOR LAMP AND BRAKE
WARNING LAMP INSPECTION ...................... ... 34
TROUBLE DIAGNOSIS FOR SYSTEM ................. ... 36
Wheel Sensor Circuit ........................................... ... 36
INSPECTION PROCEDURE ........................... ... 36
Engine System .................................................... ... 38
INSPECTION PROCEDURE ........................... ... 38
VDC/TCS/ABS Control Unit Circuit ..................... ... 38
INSPECTION PROCEDURE ........................... ... 38
Pressure Sensor Circuit ....................................... ... 39
INSPECTION PROCEDURE ........................... ... 39
Steering Angle Sensor Circuit .............................. ... 41
INSPECTION PROCEDURE ........................... ... 41
Yaw Rate/Side G Sensor (2WD Models), Yaw Rate/
Side/Decel G Sensor (AWD Models) Circuit ........ ... 42
INSPECTION PROCEDURE ........................... ... 42
Solenoid and VDC Change-Over Valve Circuit ... ... 44

BRC-4
[VDC/TCS/ABS]
PRECAUTIONS
Revision: 2006 July 2007 FX35/FX45

If there is a radio, antenna, or antenna lead-in wire (including wiring) near control module, VDC/TCS/ABS
function may have a malfunction or error.

If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits, and improper wiring.

If the following components are replaced with non-genuine components or converted, VDC OFF indicator
lamp and SLIP indicator lamp may turn on or the VDC system may not operate properly. Components
related to suspension (shock absorber, strut, spring, bushing, etc.), Tires, wheels (exclude specified size),
components related to brake (pad, rotor, caliper, etc.), components related to engine (muffler, ECM, etc.),
components related to body reinforcement (roll bar, tower bar, etc.).

Driving in the condition of breakage or excessive wear of suspension, tires or components related to the
brakes may cause VDC OFF indicator lamp and SLIP indicator lamp turn on, and the VDC system may
not operate properly.

When the TCS or VDC is activated by sudden acceleration or sudden turn, some noise may occur. The
noise is a result of the normal operation of the TCS and VDC.

When driving on roads which have extreme slopes (such as mountainous roads) or high banks (such as
sharp carves on a freeway), the VDC may not operate normally, or VDC OFF indicator lamp and SLIP
indicator lamp may turn on. However, this is not a malfunction, if normal operation can be resumed after
restarting engine.

Sudden turns (such as spin turns, acceleration turns), drifting, etc. When VDC function is OFF (VDC OFF
SW ON) may cause the G sensor system indicate a malfunction. However, this is not a malfunction, if nor-
mal operation can be resumed after restarting engine.

Change 4 tires at a time. Be sure to use specified-size tires that have the same brand name and pattern.
Wheel sensor errors can be detected be self-diagnosis when tires have wide abrasion variations or the
size is different from the genuine tires.

BRC-8
[VDC/TCS/ABS]
SYSTEM DESCRIPTION
Revision: 2006 July 2007 FX35/FX45
SYSTEM DESCRIPTIONPFP:00000
System DiagramNFS000N3
FunctionsNFS000N4
VDC

In addition to the TCS/ABS function, the driver steering amount and brake operation amount are detected
from steering angle sensor and pressure sensor, and the vehicle's driving status (amount of under steer-
ing / over steering) is determined from information from G sensor, wheel sensor, etc., and this information
is used to improve vehicle stability by controlling the braking and engine power to all four wheels.

SLIP indicator lamp flashes to inform the driver of VDC operation.

During VDC operation, body and brake pedal lightly vibrate and mechanical noises may be heard. This is
normal.

ABS warning lamp, VDC OFF indicator lamp, and SLIP indicator lamp might turn on when vehicle is sub-
ject to strong shaking or large vibration, such as when vehicle is on a turn table, a ship or a steep slope
such as bank while engine is running. In this case, restart engine on a normal road, and if ABS warning
lamp, VDC OFF indicator lamp, and SLIP indicator lamp turn off, there is no malfunction.
TCS

The wheel spin of the drive wheels is detected by ABS actuator and electric unit (control unit) from the
wheel speed signals from four wheels, so if wheel spin occurs, drive wheel right and left brake fluid pres-
sure control and engine fuel cut are performed while throttle value is restricted to reduce the engine
torque and decrease the amount of wheel spin. In addition, the degree throttle is opened is controlled to
achieve the optimum engine torque.

Depending on road circumstances, the driver may have a sluggish feel. This is normal, because the opti-
mum traction has the highest priority under TCS operation.

TCS may be activated any time vehicle suddenly accelerates, suddenly down/upshifts, or is driven on a
road with a varying surface friction coefficient.

During TCS operation, it informs a driver of system operation by flashing SLIP indicator lamp.
SFIA1160E