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