Infiniti F50. Manual - part 264

SERVICE DATA AND SPECIFICATIONS (SDS)

BR-37

C

D

E

G

H

I

J

K

L

M

A

B

BR

Disc rotor

Standard thickness (new)

16.0 mm (0.63 in)

Repair limit thickness

14.0 mm (0.55 in)

Maximum run out

0.07 mm (0.0028 in) or less

Brake type

AD14VD

BR-38

SERVICE DATA AND SPECIFICATIONS (SDS)

BRC-1

BRAKE CONTROL SYSTEM

F  BRAKES

CONTENTS

C

D

E

G

H

I

J

K

L

M

SECTION 

A

B

BRC

BRAKE CONTROL SYSTEM

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
Diagnosis Precaution  ............................................... 4

CAN SYSTEM ....................................................... 4

Precaution for Harness Repair  ................................. 4

CAN SYSTEM ....................................................... 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

Fail-Safe ................................................................... 7

ABS SYSTEM  ....................................................... 7
VDC/TCS SYSTEM ............................................... 7

Hydraulic Circuit Diagram  ........................................ 7
ABS Function  ........................................................... 7
TCS Function  ........................................................... 8
VDC Function ........................................................... 8
System Diagram ....................................................... 8

CAN COMMUNICATION  ............................................ 9

System Description  .................................................. 9

FOR VDC MODELS .............................................. 9
FOR ICC MODELS  ............................................. 10

TROUBLE DIAGNOSIS ............................................ 12

How to Proceed With Diagnosis ............................. 12

BASIC CONCEPT  ............................................... 12
DIAGNOSIS FLOWCHART  ................................ 13
ASKING COMPLAINTS  ...................................... 14
EXAMPLE OF DIAGNOSIS SHEET  ................... 14

Component Installation Location  ............................ 15
Schematic .............................................................. 16
Wiring Diagram — VDC — ..................................... 17
Control Unit Input/Output Signal Standard  ............. 25

STANDARDS BY CONSULT-II ............................ 25

CONSULT-II Functions  ........................................... 26

CONSULT-II FUNCTION APPLICATION TABLE ... 26
SELF-DIAGNOSIS .............................................. 27
DATA MONITOR  ................................................. 30
ACTIVE TEST  ..................................................... 32

For Fast and Accurate Diagnosis  ........................... 37

PRECAUTIONS FOR DIAGNOSIS  ..................... 37

Basic Inspection  ..................................................... 39

BASIC INSPECTION 1: BRAKE FLUID LEVEL 
AND LEAK INSPECTION .................................... 39
BASIC INSPECTION 2: INSPECTION FOR 
LOOSENESS OF POWER SYSTEM TERMI-
NALS ................................................................... 39
BASIC INSPECTION 3: INSPECTION OF ABS 
WARNING LAMP, VDC OFF INDICATOR LAMP, 
AND SLIP INDICATOR LAMP  ............................. 39

Inspection 1 Wheel Sensor System ........................ 40

INSPECTION PROCEDURE  .............................. 40

Inspection 2 Engine System  ................................... 42
Inspection 3 VDC/TCS/ABS Control Unit System ... 42
Inspection 4 Pressure Sensor and Circuit Between 
Pressure Sensor and VDC/TCS/ABS Control Unit ... 43
Inspection 5 Steering Angle Sensor and Circuit 
Between Steering Angle Sensor and VDC/TCS/
ABS Control Unit  .................................................... 44
Inspection 6 Yaw Rate/Side G-Sensor and Circuit 
Between Yaw Rate/Side G-Sensor and VDC/TCS/
ABS Control Unit  .................................................... 46
Inspection 7 Solenoid, VDC Switching Valve, and 
Circuits .................................................................... 47
Inspection 8 Actuator Motor, Motor Relay, and Cir-
cuit .......................................................................... 49
Inspection 9 Actuator Relay and Circuit  ................. 51
Inspection 10 Stop Lamp Switch and Circuit  .......... 53
Inspection 11 VDC/TCS/ABS Control Unit Power 
Circuit ..................................................................... 54
Inspection 12 When “SHIFT POSITION ERROR” 
Appears in Self-Diagnosis Results Display  ............ 56
Inspection 13 When “EMERGENCY BRAKE” 
Appears on Self-Diagnosis Results Display  ........... 56

BRC-2

Inspection 14 When “STEERING ANGLE SENSOR 
HAS NOT BEEN CORRECTED” Appears on Self-
Diagnosis Results Display  ...................................... 57
Inspection 15 Brake Fluid Level in Reservoir Tank, 
Communication Circuit Between VDC/TCS/ABS 
Control Unit and Brake Fluid Level Sensor  ............ 57
Inspection 16 CAN Communications Lines, VDC/
TCS/ABS Control Unit and Steering Angle Sensor 
System .................................................................... 58
Inspecting Components  .......................................... 59

VDC OFF SWITCH  ............................................. 59
VDC RELAY BOX  ................................................ 59
VDC/TCS/ABS ACTUATOR  ................................ 60

Symptom 1 ABS Works Frequently.  ....................... 62
Symptom 2 Unexpected Pedal Reaction  ................ 62
Symptom 3 Long Stopping Distance ....................... 63
Symptom 4 ABS Does Not Work.  ........................... 64
Symptom 5 Pedal Vibration and Noise  ................... 64
Symptom 6 VDC OFF Indicator Lamp Does Not Illu-
minate. .................................................................... 66
Symptom 7 SLIP Indicator Lamp Does Not Illumi-
nate. ........................................................................ 66
Symptom 8 Vehicle Behaves Jerkily During VDC/

TCS/ABS Operation. ...............................................67

WHEEL SENSORS  ...................................................68

Removal and Installation .........................................68

REMOVAL ............................................................68
INSTALLATION ....................................................68

VDC/TCS/ABS CONTROL UNIT  ..............................69

Removal and Installation .........................................69

REMOVAL ............................................................69
INSTALLATION ....................................................69

SENSOR ROTOR  ......................................................70

Removal and Installation .........................................70

REMOVAL ............................................................70
INSTALLATION ....................................................70

VDC/TCS/ABS ACTUATOR  ......................................71

Removal and Installation .........................................71

G SENSOR  ................................................................72

Removal and Installation .........................................72

REMOVAL ............................................................72
INSTALLATION ....................................................72

STEERING ANGLE SENSOR  ...................................73

Removal and Installation .........................................73

REMOVAL ............................................................73
INSTALLATION ....................................................73