engine INFINITI M35 2006 Factory Service Manual

BRAKE PEDAL
BR-7
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B
BR
Revision: 2006 January2006 M35/M45
ADJUSTMENT
1. Loosen stop lamp switch and brake switch by turning it counter-
clockwise by 45
.
2. Loosen lock nut (A) on the input rod to rotate input rod for adjust-
ing brake pedal height to the specified one, and tighten lock nut
(A).
Refer to brake pedal height BR-6, "
Inspection and Adjustment" ,
specified torque BR-19, "
COMPONENTS" .
CAUTION:
Make sure the threaded end of input rod stays inside clevis.
3. With the pedal pulled and held by hand, press stop lamp switch
and brake switch until its threaded end contacts stopper.
4. With the threaded end of the stop lamp switch and brake switch
contacting the bracket, rotate the switch clockwise by 45
to
secure.
CAUTION:
Make sure that the clearance (C) between bracket and end
of stop lamp switch and brake switch is within the standard.
Refer to BR-6, "
Inspection and Adjustment" .
5. Check pedal play.
CAUTION:
Make sure that stop lamps goes off when pedal is released.
6. Start engine to check brake pedal depression height when
depressed. Refer to BR-6, "
Inspection and Adjustment" .
Removal and InstallationNFS000OT
COMPONENTS
WITHOUT PRE-CRASH SEAT BELT
PFIA0436E
SFIA2951E
1. Clevis pin 2. Snap pin 3. Stop lamp switch
4. Brake switch 5. Clip 6. Brake pedal assembly
7. Brake pedal pad : Multi-purpose grease
Refer to GI section for symbol marks except in the above.

BR-8
BRAKE PEDAL
Revision: 2006 January2006 M35/M45
WITH PRE-CRASH SEAT BELT
NOTE:
Clevis pin can be installed from both left and right.
REMOVAL
1. Remove instrument driver lower panel. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .
2. Remove steering column assembly. Refer to PS-13, "
STEERING COLUMN" .
3. Disconnect stop lamp switch and brake switch connector.
4. Remove stop lamp switch and brake switch from brake pedal assembly.
5. Disconnect brake pedal stroke sensor connector.(With pre-crash seat belt)
CAUTION:
Brake pedal stroke sensor is not detachable. Do not detach it.
6. Remove snap pin and clevis pin from clevis of brake booster.
7. Remove brake pedal assembly mounting nuts. Pull brake booster toward engine room to the extent that
does not deform brake tube.
8. Remove brake booster clevis from input rod.
9. Remove mounting bolt and then remove brake pedal assembly from vehicle.
INSPECTION AFTER REMOVAL
Check brake pedal upper rivet for deformation.
Make sure that joint length (L) of sub-bracket and sliding plate is
4 mm (0.16 in) or more.
Check brake pedal for bend, damage, and cracks on the welded
parts.
Replace brake pedal assembly if any non-standard condition is
detected.
SFIA2952E
1. Clevis pin 2. Brake pedal stroke sensor 3. Snap pin
4. Stop lamp switch 5. Brake switch 6. Clip
7. Brake pedal assembly 8. Brake pedal pad : Multi-purpose grease
Refer to GI section for symbol marks except in the above.
SFIA2487E

BR-10
BRAKE FLUID
Revision: 2006 January2006 M35/M45
BRAKE FLUIDPFP:KN100
On-Board Inspection NFS000OU
CHECKING BRAKE FLUID LEVEL
Make sure that a brake fluid level in reservoir tank is within the
standard (between MAX and MIN lines).
Visually check around reservoir tank for fluid leakage.
If the level is excessively low, check brake system for leakage.
Release parking brake pedal and see if brake warning lamp
goes off. If not, check brake system for fluid leakage.
Checking Brake LineNFS000OV
CAUTION:
If leakage occurs around joints, retighten or, if necessary, replace damaged parts.
1. Check brake line (tubes and hoses) for cracks, deterioration or other damage. Replace any damaged
parts.
2. Check for oil leakage by fully depressing brake pedal while
engine is running.
Drain and RefillNFS000OW
CAUTION:
Refill with new brake fluid “DOT 3”.
Never reuse drained brake fluid.
Be careful not to splash brake fluid on painted areas; it may cause paint damage. If brake fluid is
splashed on painted areas, wash it away with water immediately.
Before working, disconnect connectors of ABS actuator and electric unit (control unit) or battery
cable from the negative terminal.
1. Connect a vinyl tube to bleed valve.
2. Depress brake pedal, loosen bleed valve, and gradually remove
brake fluid.
SFIA2484E
SBR389C
BRA0007D

BR-14
BRAKE TUBE AND HOSE
Revision: 2006 January2006 M35/M45
3. Remove union bolts, and then remove brake hose from brake
caliper assembly.
4. Remove lock plate and then remove brake hose from vehicle.
INSTALLATION
1. Assemble the union bolt and copper washer to the brake hose.
CAUTION:
Do not reuse copper washer.
2. Attach L-shape metal fitting of the brake hose to brake caliper assembly positioning hole, and then tighten
union bolt to the specified torque. Refer to BR-12, "
Hydraulic Circuit" .
3. Connect brake hose to brake tube, partially tighten flare nut by hand as much as possible, then secure it
to the bracket with lock plate.
4. Using a flare nut torque wrench, tighten flare nut to the specified torque. Refer to BR-12, "
Hydraulic Cir-
cuit" .
5. Refill brake fluid and bleed air. Refer to BR-11, "
Bleeding Brake System" .
Inspection after InstallationNFS000P1
CAUTION:
Brake tubes and hoses are important safety parts. Always disassemble the parts and retighten their fit-
tings, if a brake fluid leak is detected. Replace applicable part with a new one, if damaged part is
detected.
1. Check brake lines (tubes and hoses) and connections for fluid leakage, damage, twists, deformation, con-
tacts with other parts, and loose connections. Replace any damage parts.
2. While depressing brake pedal under a force of 785 N (80 kg, 177 lb) with engine running for approximately
5 seconds, then check each part for fluid leakage.
SFIA2049E

BR-18
BRAKE BOOSTER
Revision: 2006 January2006 M35/M45
BRAKE BOOSTERPFP:47200
On-Board Inspection and ServiceNFS000P6
OPERATION CHECK
With engine stopped, change vacuum to atmospheric pressure by
depressing brake pedal several times. Then with brake pedal fully
depressed, start engine and when vacuum pressure reaches the
standard, make sure that clearance between brake pedal and floor
panel decreases.
AIR TIGHT CHECK
Run engine at idle for approximately 1 minute, and stop it after
applying vacuum to booster. Depress brake pedal normally to
change vacuum to atmospheric pressure. Make sure that dis-
tance at intervals of 5 seconds between brake pedal and floor
panel gradually increases.
Depress brake pedal while engine is running, and stop engine
with pedal depressed. The pedal stroke should not change after
holding pedal down for 30 seconds.
BRA0037D
SBR365AA

BRAKE BOOSTER
BR-19
C
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B
BR
Revision: 2006 January2006 M35/M45
Removal and InstallationNFS000P7
COMPONENTS
CAUTION:
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 threads. If brake booster is tilted during installa-
tion, the dash panel may damage the threads.
REMOVAL
1. Remove cowl top. Refer to EI-18, "Removal and Installation" .
2. Remove brake master cylinder. Refer to BR-15, "
Removal and
Installation" .
3. Disconnect front left brake tube from ABS actuator and electric
unit (control unit). Refer to BR-12, "
Hydraulic Circuit" .
4. Remove vacuum hose from brake booster. Refer to BR-21,
"Components" .
5. Remove snap pin and clevis pin from inside vehicle.
6. Remove nuts on brake booster and brake pedal assembly.
7. Remove brake booster from dash panel in engine room side.
INSTALLATION
1. Loosen lock nut to adjust input rod length so that length B (in the
figure) satisfies the specified value.
2. After adjusting "B", temporarily tighten lock nut to install booster
assembly to vehicle. At this time, make sure that a gasket
between booster assembly and dash panel is installed.
CAUTION:
Always install gasket between brake booster and dash
panel.
3. Connect brake pedal with clevis of input rod.
1. Master cylinder assembly 2. Brake booster 3. Lock nut
4. Brake pedal 5. Gasket
Refer to GI section for symbol marks in the figure.
SFIA2956E
SFIA2044E
Length "B" : 125 mm (4.92 in)
SGIA0060E

VACUUM LINES
BR-21
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Revision: 2006 January2006 M35/M45
VACUUM LINESPFP:41920
ComponentsNFS000P8
VK45DE ENGINE MODEL
VQ35DE ENGINE MODEL
SFIA2957E
1. Clamp 2. Vacuum hose 3. Engine direction indicator stamp
(Built in check valve)
4. Clip 5. Vacuum piping 6. Grommet (Vacuum hose side)
7. Grommet (Cowl top assy side) 8. For intake manifold 9. For brake booster
SFIA2958E
1. Clamp 2. Vacuum hose 3. Engine direction indicator stamp
(Built in check valve)
4. Clip 5. Vacuum piping 6. Grommet (Vacuum hose side)
7. Grommet (Cowl top assy side) 8. For intake manifold 9. For brake booster

BR-22
VACUUM LINES
Revision: 2006 January2006 M35/M45
Removal and InstallationNFS000P9
CAUTION:
Because vacuum hose contains a check valve, it must be
installed in the correct position. Refer to the stamp to con-
firm correct installation. Brake booster will not operate nor-
mally if the hose is installed in the wrong direction.
Insert vacuum hose at least 24 mm (0.94 in).
Do not use lubricating oil during assembly.
InspectionNFS000PA
VISUAL INSPECTION
Check for correct assembly, damage and deterioration.
CHECK VALVE INSPECTION
Airtightness Inspection
Use a handy vacuum pump to check.
Replace vacuum hose assembly if vacuum hose and check
valve are malfunctioning.
SBR225B
When connected to the booster side (1):
Vacuum should decrease within 1.3 kPa (10
mmHg, 0.39 inHg) for 15 seconds under a vacuum
of
66.7 kPa (500 mmHg, 19.69 inHg).
When connected to the engine side (2):
Vacuum should not exist.
SFIA0210E

SERVICE DATA AND SPECIFICATIONS (SDS)
BR-35
C
D
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H
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K
L
MA
B
BR
Revision: 2006 January2006 M35/M45
SERVICE DATA AND SPECIFICATIONS (SDS)PFP:00030
General SpecificationsNFS000PL
Unit: mm (in)
Brake PedalNFS000PM
Brake BoosterNFS000PN
Va c u u m t y p e
Check ValveNFS000PO
Front Disc BrakeNFS000PP
Front brake Brake model CLZ31VD, CLZ31VB
Cylinder bore diameter 45 (1.772)
2
Pad length
width thickness 132 50 11 (5.20 1.969 0.433)
Rotor outer diameter
thickness 320 28 (12.60 1.10)
Rear brake Brake model AD14VF, AD14VE
Cylinder bore diameter 42.86 (1.687)
Pad length
width thickness 83.0 31.9 8.5 (3.268 1.256 0.335)
Rotor outer diameter
thickness 308 16 (12.13 0.63)
Master cylinder Cylinder bore diameter 25.4 (1)
Control valve Valve model Electric brake force distribution
Brake boosterBooster model N255
Diaphragm diameter 255 (10)
Recommended brake fluid DOT 3
Brake pedal height (from dash lower panel top surface) 157 167 mm (6.18 6.57 in)
Depressed pedal height
[under a force of 490 N (50 kg, 110 lb) with engine running]90 mm (3.54 in) or more
Clearance between threaded end of the stop lamp switch/brake switch
and bracket 0.74 - 1.96 mm (0.0291 - 0.0772 in)
Pedal play3 - 11 mm (0.12 - 0.43 in)
Input rod installation standard dimension 125 mm (4.92 in)
Vacuum leakage
[at vacuum of – 66.7 kPa (– 500 mmHg, – 19.69 inHg)]Within 1.3 kPa (10 mmHg, 0.39 inHg) of vacuum for 15 seconds
Brake modelCLZ31VD, CLZ31VB
Brake padStandard thickness 11.0 mm (0.433 in)
Repair limit thickness 2.0 mm (0.079 in)
Disc rotorStandard thickness 28.0 mm (1.102 in)
Wear limit 26.0 mm (1.024 in)
Thickness variation (measured at 8 positions) 0.015 mm (0.0006 in)
Runout limit (with it attached to the vehicle) 0.035 mm (0.0014 in)

BRC-1
BRAKE CONTROL SYSTEM
F BRAKES
CONTENTS
C
D
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SECTION BRC
A
B
BRC
Revision: 2006 January2006 M35/M45
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 Procedures without Cowl Top Cover ..... 3
Precautions for Brake System .................................. 3
Precautions for Brake Control .................................. 4
PREPARATION ........................................................... 5
Special Service Tools ............................................... 5
Commercial Service Tools ........................................ 5
ON-VEHICLE SERVICE ............................................. 6
Adjustment of Steering Angle Sensor Neutral Posi-
tion ........................................................................... 6
SYSTEM DESCRIPTION ............................................ 7
System Diagram ....................................................... 7
Function ................................................................... 7
ABS ....................................................................... 7
EBD ....................................................................... 7
TCS ....................................................................... 7
VDC ....................................................................... 8
ECD ....................................................................... 8
Operation That Is Not "System Error" ...................... 8
ABS ....................................................................... 8
TCS ....................................................................... 8
VDC ....................................................................... 8
Fail-Safe Function .................................................... 8
ABS, EBD SYSTEM .............................................. 8
VDC / TCS ............................................................ 9
Hydraulic Circuit Diagram ........................................ 9
CAN COMMUNICATION .......................................... 10
System Description ................................................ 10
TROUBLE DIAGNOSIS .............................................11
How to Perform Trouble Diagnoses ........................ 11
BASIC CONCEPT ................................................ 11
DIAGNOSIS FLOW CHART ............................... 12
ASKING COMPLAINTS ...................................... 13
EXAMPLE OF DIAGNOSIS WORKSHEET ........ 13
Component Parts Location ..................................... 14
Schematic .............................................................. 15Wiring Diagram — VDC — ..................................... 16
CONSULT-II Functions (ABS) ................................ 22
CONSULT-II MAIN FUNCTION ........................... 22
CONSULT-II BASIC OPERATION PROCEDURE
... 22
Self-Diagnosis .....................................................
... 23
OPERATION PROCEDURE ................................ 23
ERASE MEMORY ............................................... 23
DISPLAY ITEM LIST ........................................... 24
Data Monitor ........................................................... 27
OPERATION PROCEDURE ................................ 27
DISPLAY ITEM LIST ........................................... 27
Active Test .............................................................. 30
OPERATION PROCEDURE ................................ 30
TEST ITEMS ....................................................... 31
For Fast and Accurate Diagnosis ........................... 32
PRECAUTIONS FOR DIAGNOSIS ..................... 32
Basic Inspection ..................................................... 33
BASIC INSPECTION 1: BRAKE FLUID LEVEL,
LEAK INSPECTION AND BRAKE PAD .............. 33
BASIC INSPECTION 2: LOOSENESS OF
POWER SYSTEM TERMINALS AND BATTERY ... 33
BASIC INSPECTION 3: ABS WARNING LAMP,
BRAKE WARNING LAMP, VDC OFF INDICATOR
LAMP AND SLIP INDICATOR LAMP .................. 33
Inspection 1: Wheel Sensor Circuit ........................ 34
Inspection 2: Engine System .................................. 36
Inspection 3: ABS Actuator and Electric Unit (Con-
trol Unit) .................................................................. 36
Inspection 4: ABS Actuator and Electric Unit (Con-
trol Unit) Power Supply and Ground Circuit ............ 37
Inspection 5: ABS Motor and Motor Relay Circuit ... 38
Inspection 6: Solenoid, VDC Change-Over Valve
and Actuator Relay Circuit ...................................... 40
Inspection 7: Pressure Sensor Circuit .................... 41
Inspection 8: Steering Angle Sensor Circuit ........... 41
Inspection 9: Park/Neutral Position (PNP) Switch
Circuit ..................................................................... 43
Inspection 10: Stop Lamp Switch Circuit ................ 44
Inspection 11: Yaw Rate/Side G Sensor Circuit ..... 45