Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Infiniti G35 2003-2005 Coupe Sedan Approved Infiniti G35 Sedan 2003 brc
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BRAKE CONTROL SYSTEM
F BRAKES
A
B
SECTION
BRAKE CONTROL SYSTEM C
D
E
CONTENTS
VDC/TCS/ABS Schematic (From Serial 300001) ........................... 25 . BRC
Wiring Diagram -- VDC -- (From Serial 300001)... 26
PRECAUTIONS ......................................................... 3 . Control Unit Input/Output Signal Standard ............ 33 .
Precautions for Supplemental Restraint System STANDARDS BY CONSULT-II ........................... 33 . G
(SRS) "AIR BAG" and "SEAT BELT PRE-TEN- CONSULT-II Functions .......................................... 35 .
SIONER" ................................................................. 3
. CONSULT-II MAIN FUNCTION .......................... 35 .
Precautions for Brake System ................................. 3 . SELF-DIAGNOSIS ............................................. 35 .
Precautions for Brake Control ................................. 3 . H
DATA MONITOR ................................................ 38 .
Diagnosis Precaution .............................................. 4 . ACTIVE TEST .................................................... 40 .
CAN SYSTEM ...................................................... 4 . For Fast and Accurate Diagnosis .......................... 44 .
Precaution for Harness Repair ................................ 4 . PRECAUTIONS FOR DIAGNOSIS .................... 44 . I
CAN SYSTEM ...................................................... 4 . Basic Inspection .................................................... 46 .
PREPARATION .......................................................... 5 . BASIC INSPECTION 1: BRAKE FLUID LEVEL
Special Service Tools .............................................. 5 . AND LEAK INSPECTION ................................... 46 . J
Commercial Service Tools ....................................... 5 . BASIC INSPECTION 2: INSPECTION FOR
ON-VEHICLE SERVICE ............................................ 6 . LOOSENESS OF POWER SYSTEM TERMI-
Adjustment of Steering Angle Sensor Neutral Posi- NALS .................................................................. 46
.
tion .......................................................................... 6
. K
BASIC INSPECTION 3: INSPECTION OF ABS
GENERAL INFORMATION ........................................ 7 . WARNING LAMP, VDC OFF INDICATOR LAMP,
Fail-Safe .................................................................. 7
. AND SLIP INDICATOR LAMP ............................ 46 .
ABS SYSTEM ...................................................... 7 . Inspection 1: Wheel Sensor System ...................... 47 . L
VDC/TCS SYSTEM .............................................. 7 . INSPECTION PROCEDURE ............................. 47 .
Hydraulic Circuit Diagram ....................................... 7 . Inspection 2: Engine System ................................. 49 .
ABS Function .......................................................... 7 . Inspection 3: VDC/TCS/ABS Control Unit System 50 ... M
TCS Function .......................................................... 8 . Inspection 4: Pressure Sensor and Circuit Between
VDC Function .......................................................... 8 . Pressure sensor and VDC/TCS/ABS Control Unit... 50
System Diagram ...................................................... 8 . Inspection 5: Steering Angle Sensor and Circuit
CAN COMMUNICATION ........................................... 9 . Between Steering Angle Sensor and VDC/TCS/
System Description ................................................. 9 . ABS Control Unit ................................................... 51 .
CAN Communication Unit ....................................... 9 . Inspection 6: Yaw Rate/Side G-Sensor and Circuit
TYPE 1/TYPE 3 ................................................... 9 . Between Yaw Rate/Side G-Sensor and VDC/TCS/
TYPE 2 ................................................................11
. ABS Control Unit ................................................... 52 .
TROUBLE DIAGNOSIS ........................................... 13 . Inspection 7: Solenoid, VDC Switching Valve, and
How to Perform Trouble Diagnoses ...................... 13 . Circuits ................................................................... 54
.
BASIC CONCEPT .............................................. 13 . Inspection 8: Actuator Motor, Motor Relay, and Cir-
DIAGNOSIS FLOW CHART .............................. 14 . cuit ......................................................................... 56
.
ASKING COMPLAINTS ..................................... 15 . Inspection 9: Solenoid Valve Relay and Circuit ..... 58 .
EXAMPLE OF DIAGNOSIS SHEET .................. 15 . Inspection 10: Stop Lamp Switch and Circuit ........ 60 .
Component Parts Location .................................... 16 . Inspection 11: VDC/TCS/ABS Control Unit Power
Schematic (Up to Serial 099999) .......................... 17 . Supply Circuit ........................................................ 61 .
Wiring Diagram -- VDC -- (Up to Serial 099999) 18 ...
Revision; 2004 April BRC-1 2003 G35 Sedan
Inspection 12 When "SHIFT POSITION ERROR" nate ........................................................................73
.
Appears in Self-Diagnostic Results Display (A/T Symptom 8: Vehicle Behaves Jerkily During VDC/
Models) .................................................................. 63
. TCS/ABS Operation. ..............................................74 .
Inspection 13: When "EMERGENCY BRAKE" WHEEL SENSOR .....................................................76 .
Appears on Self-Diagnostic Results Display ......... 64 . Removal and Installation ........................................76 .
Inspection 14: When "STEERING ANGLE SEN- REMOVAL ...........................................................76 .
SOR HAS NOT BEEN CORRECTED" Appears on INSTALLATION ...................................................76 .
Self-Diagnostic Results Display ............................. 64 . VDC/TCS/ABS CONTROL UNIT .............................77 .
Inspection 15: Brake Fluid Level in Reservoir Tank, Removal and Installation ........................................77 .
Communication Circuit Between VDC/TCS/ABS REMOVAL ...........................................................77 .
Control Unit and Brake Fluid Level Sensor ........... 65 . INSTALLATION ...................................................77 .
Inspection 16: CAN Communication Lines, VDC/ SENSOR ROTOR .....................................................78 .
TCS/ABS Control Unit, and Steering Angle Sensor Removal and Installation ........................................78 .
System ................................................................... 66
. REMOVAL ...........................................................78 .
Component Inspection ........................................... 67 . INSTALLATION ...................................................78 .
VDC OFF SWITCH ............................................ 67 . VDC/TCS/ABS ACTUATOR .....................................79 .
VDC RELAY BOX ............................................... 67 . Removal and Installation ........................................79 .
VDC ACTUATOR ................................................ 68 . G-SENSOR ...............................................................80 .
Symptom 1: ABS Works Frequently. ..................... 69 . Removal and Installation ........................................80 .
Symptom 2: Unexpected Pedal Reaction .............. 69 . REMOVAL ...........................................................80 .
Symptom 3: Long Stopping Distance ..................... 70 . INSTALLATION ...................................................80 .
Symptom 4: ABS Does Not Work. ......................... 71 . STEERING ANGLE SENSOR ..................................81 .
Symptom 5: Pedal Vibration and Noise ................. 71 . Removal and Installation ........................................81 .
Symptom 6: VDC OFF Indicator Lamp Does Not Illu- REMOVAL ...........................................................81 .
minate .................................................................... 73
. INSTALLATION ...................................................81 .
Symptom 7: SLIP Indicator Lamp Does Not Illumi-
Revision; 2004 April BRC-2 2003 G35 Sedan
PRECAUTIONS
[VDC/TCS/ABS]
PRECAUTIONS
[VDC/TCS/ABS] PFP:00001
A
Precautions for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT
BELT PRE-TENSIONER" AFS0021C
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 Brake System AFS00071
q Recommended fluid is brake fluid "DOT 3".
H
q Do not reuse drained brake fluid.
q 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.
I
q Do not use mineral oils such as gasoline or kerosene to clean. They will ruin rubber parts and cause
improper operation.
q Using a flare nut torque wrench, securely tighten brake tube
J
flare nuts.
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. K
q Before working, turn ignition switch OFF and disconnect electri-
cal connectors of VDC actuator and VDC/TCS/ABS control unit
or battery negative terminals. L
q When installing brake piping, be sure to check torque.
SBR686C
M
Precautions for Brake Control AFS001J2
q During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.
q Just after starting vehicle after 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.
q Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,
or snow-covered (fresh, deep snow) roads.
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 booster operation, brake fluid level, and
fluid 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 If there is a radio, antenna, or antenna lead-in wire (including wiring) near VDC/TCS/ABS control unit,
ABS function may have a malfunction or error.
Revision; 2004 April BRC-3 2003 G35 Sedan
PRECAUTIONS
[VDC/TCS/ABS]
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 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, Bush, 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.).
q Driving in the condition of breakage or excessive wear of suspension, tires or components related to
brakes may cause VDC OFF indicator lamp and SLIP indicator lamp to turn on, and the VDC system
may not operate properly.
q When the TCS or VDC is activated by sudden acceleration or sudden turn, some noise may occur if brake
pedal is used. The noise is a result of the normal operation of the TCS and VDC.
q 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 may turn on.
However, this is not a malfunction, if normal operation can be resumed after restarting engine.
q Sudden turns (such as spin turns, acceleration turns), drifting, etc. When VDC function is OFF (VDC OFF
switch ON) may cause yaw rate/side G-sensor system to indicate a malfunction. However, this is not a
malfunction, if normal operation can be resumed after restarting engine. Then erase memory of self-diag-
nosis.
Diagnosis Precaution AFS00073
CAN SYSTEM
q Do not apply voltage of 7.0 V or higher to terminal to be measured.
q Maximum open terminal voltage of tester in use shall be 7.0 V or lower.
q Before checking harnesses, turn ignition switch OFF and disconnect battery negative terminal.
Precaution for Harness Repair AFS00074
CAN SYSTEM
q Area to be repaired shall be soldered, and wrapped with a tape
[be sure that fraying of twisted wire shall be within (110 mm 4.33
in)].
PKIA0306E
q Do not make a bypass connection to repaired area. (If it is done,
branch part will be removed and characteristics of twisted wire
will be lost.)
PKIA0307E
Revision; 2004 April BRC-4 2003 G35 Sedan
PREPARATION
[VDC/TCS/ABS]
PREPARATION PFP:00002
A
Special Service Tools AFS001I2
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.
Tool number
B
(Kent-Moore No.) Description
Tool name
C
ST3072000
(J25405)
Drift Installing rear sensor rotor D
a: 76.5 mm (3.012 in) dia.
b: 55.0 mm (2.17 in) dia.
ZZC0760D
E
ST27863000 BRC
(--) Installing rear sensor rotor
Drift
G
ZZC1307D
H
KV40104710
(--) Installing rear sensor rotor
Drift
I
ZZC1082D
Commercial Service Tools AFS0007C
J
Tool name Description
K
1.Flare nut crowfoot
a: 10 mm (0.39 in), 12 mm (0.47 in) Removing and installing each brake piping
2.Torque wrench L
S-NT360
M
Revision; 2004 April BRC-5 2003 G35 Sedan
ON-VEHICLE SERVICE
[VDC/TCS/ABS]
ON-VEHICLE SERVICE PFP:00000
Adjustment of Steering Angle Sensor Neutral Position AFS0003V
In case of doing work that applies to the list below, make sure to adjust neutral position of steering angle sen-
sor before running vehicle.
Situation Adjustment of Steering Angle Sensor Neutral Position
Removing/Installing VDC/TCS/ABS control unit -
Replacing VDC/TCS/ABS control unit -
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