2008 INFINITI FX35 installation

BRAKE BOOSTERBR-15
< SERVICE INFORMATION >
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CAUTION:
 Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted surfaces of body, immediately wipe it off and them wash it away with water
immediately.
 Be careful not to deform or bend brake tube while removing and installing brake booster.
 Replace clevis pin if it is damaged.
 Be careful not to damage brake booster stud bolt thr eads. If brake booster is tilted or inclined during
installation, dash panel may damage the threads.
 Install the check valve in the correct direction.
1. Remove vacuum hose from brake booster. Refer to BR-16
.
2. Remove brake master cylinder. Refer to BR-12, "
Removal and Installation".
3. Disconnect harness connector from brake booster assembly. (ICC model)
4. Remove snap pin and clevis pin from inside the vehicle. Refer to BR-6, "
Component".
5. Remove nuts from brake booster and brake pedal bracket.
6. Remove brake booster assembly from engine room.
INSPECTION AFTER REMOVAL
Output Rod Length Inspection
1. Using a handy vacuum pump, apply a vacuum of –66.7 kPa (– 500 mmHg, –19.69 inHg) to brake booster.
2. Check output rod length.
INSTALLATION
1. Loosen lock nut to adjust input r od length so that the length “B”
(shown in the figure) satisfies the specified value.
2. After adjusting “B”, temporarily tighten lock nut to install brake booster assembly to the vehicle. At this time, make sure to
install a gasket between brake booster assembly and the engine
room.
3. Connect brake pedal with clevis of input rod.
4. Install brake pedal bracket mounting nuts and bolt and tighten them to the specified torque. BR-6, "
Component".
5. Install brake tube from brake master cylinder to ABS actuator. Refer to BR-10, "
Hydraulic Circuit".
6. Install master cylinder to booster assembly. Refer to BR-12, "
Removal and Installation".
7. Adjust the height and play of brake pedal. BR-5, "
Inspection and Adjustment".
8. Tighten lock nut of input rod to the specified torque. Refer to BR-14, "
Component".
9. Bleed air. Refer to BR-8, "
Bleeding Brake System".
Standard dimension when
applying a vacuum of
− 66.7 kPa ( −500 mmHg, −19.69 inHg):
15.6 − 15.9 mm (0.614 − 0.626 in)
SFIA2146E
Length “B” : 126.5 mm (4.98 in)
SGIA0060E
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BR-16
< SERVICE INFORMATION >
VACUUM LINES
VACUUM LINES
ComponentINFOID:0000000001327624
Removal and InstallationINFOID:0000000001327625
CAUTION:
 Because vacuum hose contains a check valve, it must be installed in the correct direction. Refer to
the stamp or label to confirm co rrect installation. The brake booster will not ope rate normally if hose
is installed in the wrong direction.
 Insert vacuum hose for at least 24 mm (0.94 in).
 Do not use lubricating oil during assembly.
InspectionINFOID:0000000001327626
VISUAL INSPECTION
Check for improper assembly, damage and deterioration.
CHECK VALVE INSPECTION
1. Clamp 2. Vacuum hose 3. Clamp
4. Vacuum piping 5. Clamp 6. Engine direction indicator
7. Vacuum hose (Build in check valve) 8. Clamp 9. Brake booster
SFIA1134E
SBR225B
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FRONT DISC BRAKEBR-19
< SERVICE INFORMATION >
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 While removing cylinder body, never depr ess brake pedal because piston will pop out.
 It is not necessary to remove bolts on torq ue member and brake hose except for disassembly or
replacement of caliper assembly. In this case, suspe nd cylinder body with wire so as not to stretch
brake hose.
 Do not damage piston boot.
 If any shim is subject to serious corrosion, replace it with a new one.
 Always replace shims and shim covers as a set when replacing brake pads.
 Keep rotor clean, from brake fluid.
 Burnish brake contact surface after refinishing or replacing rotors, after replacing pads, or it a soft
pedal occurs at very low mileage. Refer to BR-23, "
Brake Burnishing Procedure".
Removal and Installation of Brake PadINFOID:0000000001327629
REMOVAL
1. Remove tires from vehicle with power tool.
2. Remove lower sliding pin bolt.
3. Hang cylinder body with a wire, and remove pads, pad retainers,
shims from torque member.
CAUTION:
When removing pad retainer from torque member, lift pad
retainer in the direction show n by arrow (shown in the fig-
ure) so as not to deform it.
INSTALLATION
1. Apply PBC (Poly Butyl Cuprysil) or silicone-based grease to the both sides of inner shim and outer shim, install inner shim and
inner shim cover to inner pad, and outer shim and outer shim
cover to outer pad.
2. Apply PBC (Poly Butyl Cuprysil) or silicone-based grease to pad contact surface on pad retainers, and install pad retainers and
pads to torque member.
CAUTION:
Inner pad and outer pad have pad-return mechanism on
upper side of pad retainer. When installing pad to torque
member, be sure to install pad return lever to pad wear sen-
sor securely.
3. Install cylinder body to torque member. CAUTION:
When replacing pads with new ones, press in piston until pads can be installed. In this case, care-
fully monitor brake fluid level in reservoir tank because brake fluid will return to master cylinder
reservoir tank.
4. Install lower sliding pin bolt, and tighten it to the specified torque. Refer to BR-18, "
Component".
5. Secure disc rotor with wheel nuts. Depress brake pedal a few times until it gets a responsive touch.
6. Check brake for drag.
7. Install tires to vehicle.
Removal and Installation of Brake Caliper AssemblyINFOID:0000000001327630
REMOVAL
1. Remove tires from vehicle with power tool.
2. Fasten disc rotor using wheel nut.
3. Drain brake fluid. Refer to BR-8, "
Drain and Refill".
SBR556E
SBR557E
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BR-20
< SERVICE INFORMATION >
FRONT DISC BRAKE
4. Remove union bolts and torque member bolts, and removebrake caliper assembly from the vehicle.
5. Remove disc rotor. CAUTION:
Put matching marks on both disc rotor and wheel hub when
removing disc rotor.
INSTALLATION
CAUTION:
 Refill with new brake fluid “DOT3”.
 Do not reuse drained brake fluid.
1. Install disc rotor.
CAUTION:
Align the matching marks of disc rotor and wheel hub, which were marked at the time of removal
when reusing disc rotor.
2. Install caliper assembly to vehicle, and tighten mounting bolts to the specified torque. Refer to BR-18,
"Component".
CAUTION:
Before installing torque member to vehicle, wipe oil and grease on washer seats on steering
knuckle and mounting surface of torque member.
3. Install a projection of brake hose metal fitting by aligning with protrusions on cylinder body, and tighten
union bolts to the specified torque. Refer to BR-18, "
Component".
CAUTION:
 Do not reuse copper washer for union bolts.
 Assemble brake hose securely on caliper assembly.
4. After installing caliper assembly, refill with new brake fluid and bleed air. Refer to BR-8, "
Bleeding Brake
System".
5. Install tires to vehicle.
Disassembly and Assembly of Brake Caliper AssemblyINFOID:0000000001327631
NOTE:
Do not remove torque member, brake pads, shims, shim covers and pad retainers, when disassembling or
assembling cylinder body.
DISASSEMBLY
1. Remove caliper assembly from vehicle. Refer to BR-19,
"Removal and Installation of Brake Caliper Assembly".
2. Remove sliding pin bolts from cylinder body, and remove pads, shims, shim covers and pad retainers from torque member.
CAUTION:
When removing pad retainer fr om torque member, lift the
pad retainer in the direction shown by arrow (shown in the
figure) so as not to deform it.
SFIA0140E
SBR556E
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REAR DISC BRAKEBR-25
< SERVICE INFORMATION >
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WARNING:
Clean dust on caliper and brake pad with a vacuum du st collector to minimize the hazard of airborne
particles or other materials.
CAUTION:
 While removing cylinder body, never depr ess brake pedal because piston will pop out.
 It is not necessary to remove bolts on torq ue member and brake hose except for disassembly or
replacement of caliper assembly. In this case, hang cylinder body with a wire so as not to stretch
brake hose.
 Do not damage piston boot.
 If any shim is subject to serious corrosion, replace it with a new one.
 Always replace shims and shim covers as a set when replacing brake pads.
 Keep rotor clean, from brake fluid.
 Burnish brake contact surface after refinishing or replacing rotors, after replacing pads, or if a soft
pedal occurs at very low mileage. Refer to BR-29, "
Brake Burnishing Procedure".
Removal and Installation of Brake PadINFOID:0000000001327635
REMOVAL
1. Remove tires from vehicle with power tool.
2. Remove sliding pin bolt (one on top).
3. Suspend cylinder body with a wire, and remove pads, pad retainers, shim from torque member.
INSTALLATION
1. Apply PBC (Poly Butyl Cuprysil) grease or silic one-based grease to the backside of pad and to both sides
of shim, and install inner shim and shim cover to inner pad, and install the outer shim to outer pad.
2. Install pad retainer and mount pad assemblies to torque member.
3. Push piston in so that pad is firmly installed and mount cylinder body to torque member. CAUTION:
When replacing pads with new ones, press in piston until pads can be installed. In this case, care-
fully monitor brake fluid level in reservoir tank because brake fluid will return to master cylinder
reservoir tank.
4. Install sliding pin bolt (one on top) and tighten to the specified torque. Refer to BR-24, "
Component".
5. Check brake for drag.
6. Install tires to the vehicle.
Removal and Installation of Brake Caliper AssemblyINFOID:0000000001327636
REMOVAL
1. Remove tires from vehicle with power tool.
2. Fasten disc rotor using wheel nut.
3. Drain brake fluid. Refer to BR-8, "
Drain and Refill".
4. Remove union bolt and torque member bolts, and remove brake caliper assembly from the vehicle.
5. Remove disc rotor. CAUTION:
Put matching marks on both disc rotor and wheel hub when
removing disc rotor.
INSTALLATION
Refer to GI-8, "Component" and the followings for the symbols in the figure.
1: Apply rubber grease.
2: Apply PBC (Poly Butyl Cuprysil) grease or silicone-based grease.
3: Apply polyglycol ether based lubricant.
: Apply brake fluid.
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BRC-2
DTC C1156 ST ANG SEN COM CIR .....................47
DTC C1160 DECEL G SEN SET ...........................47
DTC C1164 CV 1 ....................................................47
DTC C1165 CV 2 ....................................................47
DTC C1166 SV 1 ....................................................47
DTC C1167 SV 2 ....................................................47
DTC C1170 VARIANT CODING .............................48
DTC U1000 CAN COMM CIRCUIT ........................48
Component Inspection ............................................48
TROUBLE DIAGNOSIS FOR SYMPTOMS .......49
Excessive ABS Function Operation Frequency ......49
Unexpected Pedal Reaction ................................ ...49
The Braking Distance Is Long ................................49
The ABS Function Does Not Operate ....................50
Pedal Vibration or ABS O peration Sound Occurs ...50
Vehicle Jerks During VDC/TCS/ABS Control ...... ...50
WHEEL SENSORS ......................................... ...52
Removal and Installation ...................................... ...52
SENSOR ROTOR ..............................................53
Removal and Installation ...................................... ...53
ACTUATOR AND ELECTRIC UNIT (ASSEM-
BLY) ...................................................................
54
Removal and Installation ...................................... ...54
G SENSOR ........................................................55
Removal and Installation ...................................... ...55
STEERING ANGLE SENSOR ...........................56
Removal and Installation ...................................... ...56
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PRECAUTIONSBRC-5
< SERVICE INFORMATION > [VDC/TCS/ABS]
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PRECAUTIONS
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000001612923
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS
system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front
air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the “SUPPLEMENTAL RESTRAINT SYS-
TEM” and “SEAT BELTS” of this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
 Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the “SUPPLEMEN TAL RESTRAINT SYSTEM”.
 Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
Precaution for Brake SystemINFOID:0000000001327654
 Recommended fluid is brake fluid “DOT 3”. Refer to MA-9.
 Do not reuse drained brake fluid.
 Be careful not to splash brake fluid on painted areas such as body. If brake fluid is splashed, wipe it off and flush area with water immediately.
 Do not use mineral oils such as gasoline or kerosene to clean. They will ruin rubber parts and cause improper operation.
 Using a flare nut crowfoot and torque wrench, securely tighten brake tube flare nuts.
 Brake system is an important safe ty part. If a brake fluid leak is
detected, always disassemble the affected part. If a malfunction is
detected, replace part with a new one.
 Before working, turn ignition switch OFF and disconnect electrical
connectors of ABS actuator and elec tric unit (control unit) or bat-
tery negative terminal.
 When installing brake piping, be sure to check torque.
WARNING:
Clean brake pads and shoes with a waste cloth, then wipe with
a dust collector.
Precaution for Brake ControlINFOID:0000000001327655
 During VDC/TCS/ABS operation, brake pedal lightly vi brates and a mechanical noise may be heard. This is
normal.
 Just after starting vehicle after turning ignition switch ON, brake pedal may vibrate or motor operating noise
may be heard from engine room. This is a normal status of operation check.
 Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel, or
snow-covered (fresh, deep snow) roads.
 When an error is indicated by ABS or another warning lamp, collect all necessary information from customer
(what symptoms are present under what conditions) and check for simple causes before starting diagnostic
servicing. Besides electrical system inspection, c heck booster operation, brake fluid level, and fluid leaks.
 If tire size and type are used in an improper combinat ion, or brake pads are not Genuine NISSAN parts,
stopping distance or steering stability may deteriorate.
 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.
SBR686C
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BRC-52
< SERVICE INFORMATION >[VDC/TCS/ABS]
WHEEL SENSORS
WHEEL SENSORS
Removal and InstallationINFOID:0000000001327698
REMOVAL
1. Disconnect wheel sensor connector.
2. Remove wheel sensor mounting bolts, grommets (front sensor) and clip.
3. Remove wheel sensor.
CAUTION:
Be careful of the followin
g when installing sensor.
 As much as possible, avoid rotati ng sensor when removing it. Pull sensors out without pulling on
sensor harness.
 Take care to avoid damaging sensor edges or roto r teeth. Remove wheel sensor first before remov-
ing front wheel hub and bearing assembly and rear fina l drive. This is to avoid damage to sensor wir-
ing and loss of sensor function.
INSTALLATION
Note the following, and install in the reverse order of removal.
CAUTION:
Be careful of the follow ing when installing sensor. Tighten in stallation bolts to specified torques.
 When installing, make sure there is no foreign material such as iron chips on pick-up and mounting
hole of sensor. Make sure no foreign material h as been caught in the sensor rotor. Remove any for-
eign material and clean the mount.
 When installing front sensor, be sure to press rubber grommets in until they lock at the three loca-
tions shown in the figure (2 at shock absorbers and 1 at body pa nel). When installed, harness must
not be twisted. White line on ha rness must be visible from front.
 When installing rear sensor, attach harness at rear suspension member securely. Besides, harness
must not be twisted when installed.
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