BRC-1
BRAKE CONTROL SYSTEM
F BRAKES
CONTENTS
C
D
E
G
H
I
J
K
L
M
SECTION BRC
A
B
BRC
Revision: 2005 September 2006 Murano
BRAKE CONTROL SYSTEM
ABS
PRECAUTIONS .......................................................... 4
Precautions for Supplemental Restraint System
(SRS) ?AIR BAG? and ?SEAT BELT PRE-TEN-
SIONER? .................................................................. 4
Precautions for Brake System .................................. 4
Precautions for Brake Control .................................. 4
PREPARATION ........................................................... 6
Commercial Service Tools ........................................ 6
SYSTEM DESCRIPTION ............................................ 7
System Diagram ....................................................... 7
COMPONENTS FUNCTION DESCRIPTION ....... 7
Function ................................................................... 7
ABS ....................................................................... 7
EBD ....................................................................... 8
Hydraulic Circuit Diagram ........................................ 8
HYDRAULIC COMPONENTS FUNCTION
DESCRIPTION ...................................................... 8
CAN Communication ................................................ 9
SYSTEM DESCRIPTION ...................................... 9
TROUBLE DIAGNOSIS ............................................ 10
Fail-Safe Function .................................................. 10
ABS, EBD SYSTEM ............................................ 10
How to Perform Trouble Diagnosis for Quick and
Accurate Repair ..................................................... 10
INTRODUCTION ................................................. 10
DIAGNOSIS FLOW CHART ................................11
ASKING COMPLAINTS ...................................... 12
EXAMPLE OF DIAGNOSIS SHEET ................... 12
Component Installation Location ............................ 13
Schematic .............................................................. 14
Wiring Diagram ? ABS ? ..................................... 15
Control Unit Input/Output Signal Standard ............. 19
REFERENCE VALUE FROM CONSULT-II ......... 19
CONSULT- II Functions (ABS) ............................... 20
CONSULT-II MAIN FUNCTION ........................... 20
CONSULT-II SETTING PROCEDURE ................ 20
SELF-DIAG RESULT MODE .............................. 22
DATA MONITOR MODE ..................................... 24
ACTIVE TEST .....................................................26
ABS ACTUATOR AND ELECTRIC UNIT (CON-
TROL UNIT) PART NUMBER .............................27
Trouble Diagnosis Chart for Symptoms ..................27
For Fast and Accurate Diagnosis ...........................28
PRECAUTIONS FOR DIAGNOSIS .....................28
Basic Inspection .....................................................29
BRAKE FLUID LEVEL, LEAKS, AND BRAKE
PAD .....................................................................29
POWER SYSTEM TERMINAL LOOSENESS
AND BATTERY ....................................................29
ABS WARNING LAMP AND BRAKE WARNING
LAMP ...................................................................29
TROUBLE DIAGNOSIS FOR SYSTEM ....................30
Wheel Sensor .........................................................30
INSPECTION PROCEDURE ..............................30
ABS Actuator and Electric Unit (Control Unit) ........33
INSPECTION PROCEDURE ..............................33
Solenoid Valve Circuit .............................................33
INSPECTION PROCEDURE ..............................33
CAN Communication Circuit ...................................34
INSPECTION PROCEDURE ..............................34
Actuator Motor, Motor Relay, and Circuit ................35
INSPECTION PROCEDURE ..............................35
ABS Actuator and Electric Unit (Control Unit) Power
Supply and Ground Circuit .....................................36
INSPECTION PROCEDURE ..............................36
G Sensor System ...................................................37
INSPECTION PROCEDURE ..............................37
Stop Lamp Switch ...................................................38
INSPECTION PROCEDURE ..............................38
TROUBLE DIAGNOSIS FOR SYMPTOMS ..............39
Excessive ABS Function Operation Frequency ......39
Unexpected Pedal Reaction ...................................39
The Braking Distance is Long .................................40
ABS Function Dose Not Operate ............................40
Pedal Vibration or ABS Operation Sound Occurs ...40
ABS Warning Lamp Indication is Not Normal .........41