Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti M45 M35 Y50 2006-2007 Approved M45_M35-Y50-2006 brc
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BRAKE CONTROL SYSTEM
F BRAKES
A
SECTION
BRAKE CONTROL SYSTEM
BRC B
C
D
E
CONTENTS
VDC/TCS/ABS Wiring Diagram -- VDC -- .................................... 16 . BRC
CONSULT-II Functions (ABS) ............................... 22 .
PRECAUTIONS ......................................................... 3 . CONSULT-II MAIN FUNCTION .......................... 22 .
Precautions for Supplemental Restraint System CONSULT-II BASIC OPERATION PROCEDURE G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- ... 22
SIONER" ................................................................. 3
. Self-Diagnosis ....................................................... 23.
Precautions for Procedures without Cowl Top Cover 3 ..... OPERATION PROCEDURE ............................... 23 .
Precautions for Brake System ................................. 3 . H
ERASE MEMORY .............................................. 23 .
Precautions for Brake Control ................................. 4 . DISPLAY ITEM LIST .......................................... 24 .
PREPARATION .......................................................... 5 . Data Monitor .......................................................... 27
.
Special Service Tools .............................................. 5 . OPERATION PROCEDURE ............................... 27 . I
Commercial Service Tools ....................................... 5 . DISPLAY ITEM LIST .......................................... 27 .
ON-VEHICLE SERVICE ............................................ 6 . Active Test ............................................................. 30
.
Adjustment of Steering Angle Sensor Neutral Posi- OPERATION PROCEDURE ............................... 30 . J
tion .......................................................................... 6
. TEST ITEMS ...................................................... 31 .
SYSTEM DESCRIPTION ........................................... 7 . For Fast and Accurate Diagnosis .......................... 32 .
System Diagram ...................................................... 7 . PRECAUTIONS FOR DIAGNOSIS .................... 32 .
Function .................................................................. 7
. K
Basic Inspection .................................................... 33 .
ABS ...................................................................... 7
. BASIC INSPECTION 1: BRAKE FLUID LEVEL,
EBD ...................................................................... 7
. LEAK INSPECTION AND BRAKE PAD ............. 33 .
TCS ...................................................................... 7
. BASIC INSPECTION 2: LOOSENESS OF L
VDC ...................................................................... 8
. POWER SYSTEM TERMINALS AND BATTERY 33 ...
ECD ...................................................................... 8
. BASIC INSPECTION 3: ABS WARNING LAMP,
Operation That Is Not "System Error" ..................... 8 . BRAKE WARNING LAMP, VDC OFF INDICATOR M
ABS ...................................................................... 8
. LAMP AND SLIP INDICATOR LAMP ................. 33 .
TCS ...................................................................... 8
. Inspection 1: Wheel Sensor Circuit ....................... 34 .
VDC ...................................................................... 8
. Inspection 2: Engine System ................................. 36 .
Fail-Safe Function ................................................... 8 . Inspection 3: ABS Actuator and Electric Unit (Con-
ABS, EBD SYSTEM ............................................. 8 . trol Unit) ................................................................. 36
.
VDC / TCS ........................................................... 9. Inspection 4: ABS Actuator and Electric Unit (Con-
Hydraulic Circuit Diagram ....................................... 9 . trol Unit) Power Supply and Ground Circuit ........... 37 .
CAN COMMUNICATION ......................................... 10 . Inspection 5: ABS Motor and Motor Relay Circuit... 38
System Description ............................................... 10 . Inspection 6: Solenoid, VDC Change-Over Valve
TROUBLE DIAGNOSIS ............................................11 . and Actuator Relay Circuit ..................................... 40 .
How to Perform Trouble Diagnoses .......................11 . Inspection 7: Pressure Sensor Circuit ................... 41 .
BASIC CONCEPT ...............................................11 . Inspection 8: Steering Angle Sensor Circuit .......... 41 .
DIAGNOSIS FLOW CHART .............................. 12 . Inspection 9: Park/Neutral Position (PNP) Switch
ASKING COMPLAINTS ..................................... 13 . Circuit .................................................................... 43
.
EXAMPLE OF DIAGNOSIS WORKSHEET ....... 13 . Inspection 10: Stop Lamp Switch Circuit ............... 44 .
Component Parts Location .................................... 14 . Inspection 11: Yaw Rate/Side G Sensor Circuit .... 45 .
Schematic ............................................................. 15.
Revision: 2006 January BRC-1 2006 M35/M45
Inspection 12: Brake Fluid Level Switch Circuit ..... 48 . WHEEL SENSOR .....................................................57 .
Inspection 13: RAS Control Unit Circuit (With RAS) 49 ... Removal and Installation ........................................57 .
Inspection 14: ICC Sensor Integrated Unit Circuit COMPONENT .....................................................57 .
(With ICC) .............................................................. 50
. REMOVAL ...........................................................57
.
Inspection 15: AWD Control Unit Circuit (AWD INSTALLATION ...................................................57.
Model) .................................................................... 50
. SENSOR ROTOR .....................................................59 .
Inspection 16: CAN Communication Circuit ........... 51 . Removal and Installation ........................................59 .
Inspection 17: VDC OFF Switch Circuit ................. 51 . REMOVAL ...........................................................59
.
Inspection 18: Parking Brake Switch Circuit .......... 52 . INSTALLATION ...................................................59.
Inspection 19: Warning Lamp and Indicator Lamp ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) ...60
Circuit .................................................................... 53
. Removal and Installation ........................................60 .
Symptom 1 Excessive ABS Function Operation Fre- COMPONENT .....................................................60 .
quency ................................................................... 53
. REMOVAL ...........................................................60
.
Symptom 2 Unexpected Pedal Reaction ............... 54 . INSTALLATION ...................................................61.
Symptom 3 The Braking Distance Is Long ............ 55 . G-SENSOR ...............................................................62
.
Symptom 4 ABS Function Does Not Operate ....... 55 . Removal and Installation ........................................62 .
Symptom 5 Pedal Vibration or ABS Operation REMOVAL ...........................................................62
.
Sound Occurs ........................................................ 55 . INSTALLATION ...................................................62.
Symptom 6 Vehicle Jerks During VDC/TCS/ABS STEERING ANGLE SENSOR ..................................63 .
Control ................................................................... 56
. Removal and Installation ........................................63 .
REMOVAL ...........................................................63
.
INSTALLATION ...................................................63.
Revision: 2006 January BRC-2 2006 M35/M45
PRECAUTIONS
[VDC/TCS/ABS]
PRECAUTIONS
[VDC/TCS/ABS] PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" NFS000PY
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along B
with a front seat belt, helps to reduce the risk or severity 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 C
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 SRS and SB section of this Service Man-
ual.
WARNING: D
q To avoid rendering the SRS inoperative, 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 per-
formed by an authorized NISSAN/INFINITI dealer. E
q Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-
sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air
Bag Module, see the SRS section. BRC
q Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses or
harness connectors.
G
Precautions for Procedures without Cowl Top Cover NFS000PZ
When performing the procedure after removing cowl top cover, cover
the lower end of windshield with urethane, etc. H
I
J
PIIB3706J
K
Precautions for Brake System NFS000Q0
q Recommended fluid is brake fluid "DOT 3".
q Never reuse drained brake fluid. L
q Be careful not to splash brake fluid on painted surface of body. If brake fluid is splashed on painted sur-
faces of body immediately wipe off then with cloth and then wash it away with water.
M
q Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.
q Use a flare nut wrench when removing flare nuts, and use a flare
nut torque wrench when tighten brake tube flare nuts.
q When installing brake tubes, be sure to check torque.
q Brake system is an important safety part. If a brake fluid leak is
detected, always disassemble the affected part. If a malfunction
is detected, replace part with a new one.
q Before working, turn ignition switch OFF and disconnect con-
nectors of ABS actuator and electric unit (control unit) or the bat-
tery cable from the negative terminal.
WARNING: SBR686C
Clean brake pads and shoes with a waste cloth, then wipe with
a dust collector.
Revision: 2006 January BRC-3 2006 M35/M45
PRECAUTIONS
[VDC/TCS/ABS]
Precautions for Brake Control NFS000Q1
q Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise may
be heard from engine compartment. This is normal condition.
q When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-
tomer (what symptoms are present under what conditions) and check for simple causes before starting
diagnostic servicing. Besides electrical system inspection, check brake booster operation, brake fluid
level, and oil leaks.
q If tire size and type are used in an improper combination, or brake pads are not Genuine NISSAN parts,
stopping distance or steering stability may deteriorate.
q ABS might be out of order or malfunctions by putting a radio (wiring inclusive), an antenna and a lead-in
wire near the control unit.
q If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harness
pinches, open circuits, and improper wiring.
q VDC system may not operate normally or a VDC OFF indicator lamp or SLIP indicator lamp may light.
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