ABS NISSAN ALMERA TINO 2001 Service User Guide

BRAKE SYSTEM
SECTION
BR
CONTENTS
PRECAUTIONS...............................................................3
Supplemental Restraint System (SRS)″AIR
BAG″and″SEAT BELT PRE-TENSIONER″...............3
Precautions for Brake System .....................................3
Precautions When Working On ABS ...........................4
Wiring Diagrams and Trouble Diagnosis .....................4
PREPARATION...............................................................5
Commercial Service Tools ...........................................5
NOISE, VIBRATION AND HARSHNESS (NVH)
TROUBLESHOOTING.....................................................6
NVH Troubleshooting Chart.........................................6
ON-VEHICLE SERVICE..................................................7
Checking Brake Fluid Level.........................................7
Checking Brake Line ...................................................7
Changing Brake Fluid ..................................................7
Brake Burnishing Procedure........................................7
Bleeding Brake System ...............................................8
BRAKE HYDRAULIC LINE.............................................9
Hydraulic Circuit...........................................................9
Removal .......................................................................9
Inspection.....................................................................9
Installation ..................................................................10
BRAKE PEDAL AND BRACKET.................................. 11
Removal and Installation ........................................... 11
Inspection................................................................... 11
Adjustment ................................................................. 11
MASTER CYLINDER.....................................................13
Removal .....................................................................13
Disassembly...............................................................13
Inspection...................................................................14
Assembly ...................................................................14
Installation ..................................................................15
BRAKE BOOSTER........................................................16
On-vehicle Service.....................................................16
OPERATING CHECK...............................................16
AIRTIGHT CHECK...................................................16
Removal .....................................................................16
Inspection...................................................................16
OUTPUT ROD LENGTH CHECK..............................16Installation ..................................................................17
VACUUM HOSE.............................................................18
Removal and Installation ...........................................18
Inspection...................................................................19
HOSES AND CONNECTORS...................................19
CHECK VALVE........................................................19
VACUUM PUMP............................................................20
Removal .....................................................................20
Installation ..................................................................21
Inspection...................................................................21
Component ................................................................22
Disassembly...............................................................22
Assembly ...................................................................22
FRONT DISC BRAKE...................................................24
Component ................................................................24
Pad Replacement ......................................................24
Removal .....................................................................25
Disassembly...............................................................25
Inspection...................................................................25
CALIPER.................................................................25
ROTOR...................................................................26
Assembly ...................................................................27
Installation ..................................................................27
REAR DISC BRAKE (CAM & STRUT TYPE)..............28
Component ................................................................28
Pad Replacement ......................................................28
Removal .....................................................................30
Disassembly...............................................................30
Inspection...................................................................31
CALIPER.................................................................31
ROTOR...................................................................32
Assembly ...................................................................32
Installation ..................................................................35
REAR DISC BRAKE (BALL & RAMP TYPE)..............36
Component ................................................................36
Pad Replacement ......................................................36
Removal .....................................................................38
Disassembly...............................................................38
Inspection...................................................................38

CALIPER.................................................................38
ROTOR...................................................................39
Installation ..................................................................39
PARKING BRAKE CONTROL......................................40
Components...............................................................40
Removal and Installation ...........................................40
Inspection...................................................................40
Adjustment .................................................................41
ABS
DESCRIPTION...............................................................42
Purpose......................................................................42
ABS (Anti-Lock Brake System) Operation ................42
ABS Hydraulic Circuit ................................................42
System Components .................................................43
System Description ....................................................43
SENSOR.................................................................43
CONTROL UNIT......................................................43
ABS ACTUATOR AND ELECTRIC UNIT....................43
Component Parts and Harness Connector
Location .....................................................................45
Schematic ..................................................................46
MODELS WITH SELF-DIAGNOSIS FUNCTION
(DATA LINK CONNECTOR TERMINAL NO. 9)
...........46
MODELS WITHOUT SELF-DIAGNOSIS
FUNCTION (DATA LINK CONNECTOR TERMINAL
NO. 9)
.....................................................................47
Wiring Diagram - ABS - .............................................48
MODELS WITH SELF-DIAGNOSIS FUNCTION
(DATA LINK CONNECTOR TERMINAL NO. 9)
...........48
MODELS WITHOUT SELF-DIAGNOSIS
FUNCTION (DATA LINK CONNECTOR TERMINAL
NO. 9)
.....................................................................52
ON BOARD DIAGNOSTIC SYSTEM
DESCRIPTION...............................................................56
Self-diagnosis (Only models with data link
connector terminal No. 9) ..........................................56
FUNCTION..............................................................56
SELF-DIAGNOSIS PROCEDURE..............................56
HOW TO READ SELF-DIAGNOSTIC RESULTS
(MALFUNCTION CODES)
........................................57
HOW TO ERASE SELF-DIAGNOSTIC RESULTS
(MALFUNCTION CODES)
........................................57
CONSULT-II ...............................................................58
CONSULT-II APPLICATION TO ABS..........................58
ECU (ABS CONTROL UNIT) PART NUMBER
MODE
.....................................................................58
CONSULT-II Inspection Procedure............................58
SELF-DIAGNOSIS PROCEDURE..............................58
SELF-DIAGNOSTIC RESULTS MODE.......................60
DATA MONITOR PROCEDURE................................61
ACTIVE TEST PROCEDURE....................................62
DATA MONITOR MODE...........................................63
ACTIVE TEST MODE...............................................63
TROUBLE DIAGNOSIS - INTRODUCTION..................64
How to Perform Trouble Diagnoses for Quick
and Accurate Repair ..................................................64
INTRODUCTION......................................................64
TROUBLE DIAGNOSIS - BASIC INSPECTION...........65
Preliminary Check......................................................65
Ground Circuit Check ................................................68
ABS ACTUATOR AND ELECTRIC UNIT GROUND.....68
TROUBLE DIAGNOSIS - GENERAL
DESCRIPTION...............................................................69
Malfunction Code/Symptom Chart.............................69
MODELS WITH SELF-DIAGNOSIS FUNCTION
(DATA LINK CONNECTOR TERMINAL NO. 9)
...........69
TROUBLE DIAGNOSES FOR SELF-DIAGNOSTIC
ITEMS.............................................................................71
Wheel Sensor or Rotor ..............................................71
DIAGNOSTIC PROCEDURE.....................................71
ABS Actuator Solenoid Valve or Solenoid Valve
Relay ..........................................................................74
DIAGNOSTIC PROCEDURE.....................................74
Motor Relay or Motor.................................................77
DIAGNOSTIC PROCEDURE.....................................77
Low Voltage ...............................................................79
DIAGNOSTIC PROCEDURE.....................................79
Control Unit ................................................................81
DIAGNOSTIC PROCEDURE.....................................81
TROUBLE DIAGNOSES FOR SYMPTOMS.................82
1. ABS Works Frequently ..........................................82
2. Unexpected Pedal Action ......................................82
3. Long Stopping Distance ........................................83
4. ABS Does Not Work ..............................................84
5. Pedal Vibration and Noise.....................................85
6. ABS Warning Lamp Does Not Come On
When Ignition Switch Is Turned On...........................86
7. ABS Warning Lamp Stays On When Ignition
Switch Is Turned On ..................................................88
REMOVAL AND INSTALLATION.................................90
Wheel Sensors ..........................................................90
ABS Actuator and Electric Unit..................................91
REMOVAL...............................................................91
INSTALLATION........................................................91
Sensor Rotor..............................................................92
REMOVAL...............................................................92
INSTALLATION........................................................92
SERVICE DATA AND SPECIFICATIONS (SDS).........93
General Specifications ...............................................93
Disc Brake .................................................................93
Brake Pedal ...............................................................93
Parking Brake ............................................................93
CONTENTS(Cont’d)
BR-2

Precautions When Working On ABSNLBR0149+Use recommended tyres in combination with ABS.
+Please fit tyres or studded tyres, etc. with the same size.
+If different sizes of tyres, or tyres other than the ones rec-
ommended for use with the ABS, are fitted, stopping dis-
tance will increase and control and stability could deterio-
rate.
+When changing brake pads, please use Nissan genuine
parts.
+When fitting radios etc, do not position the radio itself,
antenna, or antenna cables within an area of about 100
mm (3.94 in) of the control unit.
+When doing any work that requires electro-welding, first
remove the control unit.
+Please take care when taking a power supply for the
audio, lamps etc., not to take this from any ABS-related
harness. (Please refer to the electrical wiring diagrams for
ABS-related harnesses)
Wiring Diagrams and Trouble DiagnosisNLBR0003When you read wiring diagrams, refer to the following:
+GI-11,“HOW TO READ WIRING DIAGRAMS”
+EL-10,“POWER SUPPLY ROUTING”
When you perform trouble diagnosis, refer to the following:
+GI-32,“HOW TO FOLLOW TEST GROUPS IN TROUBLE DIAGNOSIS”
+GI-21,“HOW TO PERFORM EFFICIENT DIAGNOSES FOR AN ELECTRICAL INCIDENT”
PRECAUTIONS
Precautions When Working On ABS
BR-4

pressure such that vehicle stopping time equals 3 to 5 sec-
onds.
3. To cool the brake system, drive the vehicle at 50 km/h (31
MPH) for 1 minute without stopping.
4. Repeat steps 1 to 3, 10 times or more to complete the burnish-
ing procedure.
NBR357
Bleeding Brake SystemNLBR0009CAUTION:
+Carefully monitor brake fluid level at master cylinder dur-
ing bleeding operation.
+Fill reservoir with new brake fluid“DOT 4”. Make sure it is
full at all times while bleeding air out of system.
+Place a container under master cylinder to avoid spillage
of brake fluid.
+For models with ABS, turn ignition switch OFF and dis-
connect ABS actuator connectors or battery ground cable.
SBR419C
+Bleed air in the following order.
Right rear brake→Left front brake→Left rear brake→Right
front brake
1. Connect a transparent vinyl tube to air bleeder valve.
2. Fully depress brake pedal several times.
3. With brake pedal depressed, open air bleeder valve to release
air.
4. Close air bleeder valve.
5. Release brake pedal slowly.
6. Repeat steps 2. through 5. until clear brake fluid comes out of
air bleeder valve.
ON-VEHICLE SERVICE
Brake Burnishing Procedure (Cont’d)
BR-8

PurposeNLBR0082The ABS consists of electronic and hydraulic components. It allows to control the braking force so that lock-
ing of the wheels can be avoided.
The ABS:
1) Ensures proper tracking performance through steering wheel operation.
2) Enables obstacles to be avoided through steering wheel operation.
3) Ensures vehicle stability by preventing flat spins.
ABS (Anti-Lock Brake System) OperationNLBR0083+When the vehicle speed is less than 10 km/h (6 MPH) this system does not work.
+The Anti-Lock Brake System (ABS) has self-test capabilities. The system turns on the ABS warning lamp
for 1 second after turning the ignition switch ON. The system performs another test the first time the vehicle
reaches 6 km/h (4 MPH). A mechanical noise may be heard as the ABS performs a self-test. This is a
normal part of the self-test feature. If a malfunction is found during this check, the ABS warning lamp will
come on.
+During ABS operation, a mechanical noise may be heard. This is a normal condition.
ABS Hydraulic CircuitNLBR0084
SBR757E
1. Inlet solenoid valve
2. Outlet solenoid valve
3. Reservoir4. Pump
5. Motor6. Bypass check valve
7. Damper
DESCRIPTIONABS
Purpose
BR-42

System ComponentsNLBR0086
NBR369
SBR124B
System DescriptionNLBR0087SENSORNLBR0087S01The sensor unit consists of a gear-shaped sensor rotor and a sen-
sor element. The element contains a bar magnet around which a
coil is wound. The sensor is installed on the back side of the brake
rotor. Sine-wave current is generated by the sensor as the wheel
rotates. The frequency and voltage increase(s) as the rotating
speed increases.
SBR759E
CONTROL UNITNLBR0087S02The control unit computes the wheel rotating speed by the signal
current sent from the sensor. Then it supplies a DC current to the
actuator solenoid valve. It also controls ON-OFF operation of the
valve relay and motor relay. If any electrical malfunction should be
detected in the system, the control unit causes the warning lamp
to light up. In this condition, the ABS will be deactivated by the
control unit, and the vehicle’s brake system reverts to normal
operation.
SBR176E
ABS ACTUATOR AND ELECTRIC UNITNLBR0087S03The ABS actuator and electric unit contains:
+An electric motor and pump
+Two relays
+Eight solenoid valves, each inlet and outlet for
—LH front
—RH front
—LH rear
—RH rear
+ABS control unit
DESCRIPTIONABS
System Components
BR-43

This components controls the hydraulic circuit and increases, holds
or decreases hydraulic pressure to all or individual wheels. The
ABS actuator and electric unit can not be disassemble and will be
service as an assembly.
ABS Actuator OperationNLBR0087S0301
Inlet solenoid
valveOutlet solenoid
valve
Normal brake operation OFF (Open) OFF (Closed)Master cylinder brake fluid pressure is directly
transmitted to caliper via the inlet solenoid valve.
ABS operationPressure hold ON (Closed) OFF (Closed)Hydraulic circuit is shut off to hold the caliper brake
fluid pressure.
Pressure
decreaseON (Closed) ON (Open)Caliper brake fluid is sent to reservoir via the outlet
solenoid valve. Then it is pushed up to the master
cylinder by pump.
Pressure
increaseOFF (Open) OFF (Closed)Master cylinder brake fluid pressure is transmitted
to caliper.
DESCRIPTIONABS
System Description (Cont’d)
BR-44

Component Parts and Harness Connector
Location
NLBR0088
NBR370
DESCRIPTIONABS
Component Parts and Harness Connector Location
BR-45

SchematicNLBR0089MODELS WITH SELF-DIAGNOSIS FUNCTION (DATA LINK CONNECTOR TERMINAL NO. 9)NLBR0089S01
YBR198
DESCRIPTIONABS
Schematic
BR-46

MODELS WITHOUT SELF-DIAGNOSIS FUNCTION (DATA LINK CONNECTOR TERMINAL NO. 9)NLBR0089S02
YBR212
DESCRIPTIONABS
Schematic (Cont’d)
BR-47