brake sensor TOYOTA LAND CRUISER 1996 J80 Workshop Manual

IN0253
WRONGCORRECT
IN0252
WRONGCORRECT
IN−6
−
INTRODUCTION REPAIR INSTRUCTIONS
6
Author: Date:
1996 LAND CRUISER (RM451U)
(k) Care must be taken when jacking up and supporting the
vehicle. Be sure to lift and support the vehicle at the prop-
er locations (See page IN−8).
Cancel the parking brake on the level place and
shift the transmission in Neutral (or N position).
When jacking up the front wheels of the vehicle at
first place stoppers behind the rear wheels.
When jacking up the rear wheels of the vehicle at
first place stoppers before the front wheels.
When either the front or rear wheels only should be
jacked up, set rigid racks and place stoppers in front
and behind the other wheels on the ground.
After the vehicle is jacked up, be sure to support it
on rigid racks . It is extremely dangerous to do any
work on a vehicle raised on a jack alone, even for
a small job that can be finished quickly.
(l) Observe the following precautions to avoid damage to the
following parts:
(1) Do not open the cover or case of the ECU unless absolutely necessary. (If the IC terminals are
touched, the IC may be destroyed by static electric-
ity.)
(2) To disconnect vacuum hoses, pull off the end, not the middle of the hose.
(3) To pull apart electrical connectors, pull on the con- nector itself, not the wires.
(4) Be careful not to drop electrical components, such
as sensors or relays. If they are dropped on a hard
floor, they should be replaced and not reused.
(5) When steam cleaning an engine, protect the elec- tronic components, air filter and emission −related
components from water.
(6) Never use an impact wrench to remove or install temperature switches or temperature sensors.
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DIAGNOSTIC TROUBLE CODE CHECK PROCEDURE
Diagnostic Trouble
Code Check (Make a
note of and then clear) Confirmation
of Symptoms
Diagnostic Trouble
Code Check
Problem Condition
Diagnostic Trouble
Code Display Problem symptoms
exist
Same diagnostic
trouble code is
displayed Problem is
still occurring in the diagnostic
circuit
Normal code is
displayed The problem is still occurring in a place
other than in the diagnostic circuit
(The diagnostic trouble code displayed
first is either for a past problem or it is a
secondary problem)
No problem
symptoms exist
The problem occurred in the diagnostic
circuit in the past
Normal Code Display Problem symptoms
existNormal code is
displayed The problem is still occurring in a place
other than in the diagnostic circuit
No problem
symptoms exist
Normal code is
displayed The problem occurred in a place other
than in the diagnostic circuit in the past
IN−20−
INTRODUCTION HOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
1996 LAND CRUISER (RM451U)
2. SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE CHECK
The diagnostic system in the LAND CRUISER fulfills various functions. The first functio\
n is the Diagnostic
Trouble Code Check in which a malfunction in the signal circuits to the ECU is stored in co\
de in the ECU
memory at the time of occurrence, to be output by the technician during troubl\
eshooting. Another function
is the Input Signal Check which checks if the signals from various switc\
hes are sent to the ECU correctly.
By using these check functions, the problem areas can be narrowed down qui\
ckly and troubleshooting can
be performed ef fectively. Diagnostic functions are incorporated in the following systems in the LAND CRUIS-
ER.
SystemDiagnostic Trouble
Code CheckInput Signal Check(Sensor Check)Diagnostic Test
Mode (Active Test)
1. Engine
(with Check Mode)
2. Automatic T ransmission
(with Check Mode)
3. Anti− Lock Brake System
4. Supplemental Restraint System
5. Cruise Control System
In diagnostic trouble code check, it is very important to determine whethe\
r the problem indicated by the diag-
nostic trouble code is still occurring or occurred in the past but returned to\
normal at present. In addition,
it must be checked in the problem symptom check whether the malfunction \
indicated by the diagnostic
trouble code is directly related to the problem symptom or not. For this reason, the \
diagnostic trouble codes
should be checked before and after the symptom confirmation to determine the curre\
nt conditions, as shown
in the table below. If this is not done, it may, depending on the case, result in unnecessary troubleshooting
for normally operating systems, thus making it more difficult to locate the problem, or in repairs not pertinent
to the problem. Therefore, always follow the procedure in correct order an\
d perform the diagnostic trouble
code check.
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IN04Q−07
−
INTRODUCTION TERMS
IN−33
33
Author: Date:
1996 LAND CRUISER (RM451U)
TERMS
ABBREVIATIONS USED IN THIS MANUAL
AbbreviationsMeaning
ABSAnti−Lock Brake System
ACAlternating Current
ACCAccessory
ACISAcoustic Control Induction System
ACSDAutomatic Cold Start Device
A.D.D.Automatic Disconnecting Differential
A/FAir−Fuel Ratio
AHCActive Height Control Suspension
ALRAutomatic Locking Retractor
ALTAlternator
AMPAmplifier
ANTAntenna
APPROX.Approximately
A/TAutomatic Transmission (Transaxle)
AT FAutomatic Transmission Fluid
AUTOAutomatic
AUXAuxiliary
AV GAverage
AV SAdaptive Variable Suspension
BABrake Assist
BACSBoost Altitude Compensation System
BATBattery
BDCBottom Dead Center
B/LBi−Level
B/SBore−Stroke Ratio
BTDCBefore Top Dead Center
BVSVBimetallic Vacuum Switching V alve
Calif.California
CBCircuit Breaker
CCoCatalytic Converter For Oxidation
CDCompact Disc
CFCornering Force
CGCenter Of Gravity
CHChannel
COMB.Combination
CPECoupe
CPSCombustion Pressure Sensor
CPUCentral Processing Unit
CRSChild Restraint System
CTRCenter
C/VCheck Valve
CVControl Valve
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IN−36
−
INTRODUCTION TERMS
36
Author: Date:
1996 LAND CRUISER (RM451U)
NA
Natural Aspiration
No.Number
O/DOverdrive
OEMOriginal Equipment Manufacturing
OHCOverhead Camshaft
OHVOverhead V
alve
OPTOption
O/SOversize
P & BVProportioning And Bypass Valve
PCSPower Control System
PCVPositive Crankcase Ventilation
PKBParking Brake
PPSProgressive Power Steering
PSPower Steering
PTOPower Take−Off
R & PRack And Pinion
R/BRelay Block
RBSRecirculating Ball Type Steering
R/FReinforcement
RFSRigid Front Suspension
RHRight−Hand
RHDRight−Hand Drive
RLYRelay
ROMRead Only Memory
RrRear
RRRear−Engine Rear −Wheel Drive
RRSRigid Rear Suspension
RWDRear− Wheel Drive
SDNSedan
SENSensor
SICSStarting Injection Control System
SMTSequential Manual T ransmission
SOCState Of Charge
SOHCSingle Overhead Camshaft
SPECSpecification
SPISingle Point Injection
SRSSupplemental Restraint System
SSMSpecial Service Materials
SSTSpecial Service Tools
STDStandard
STJCold−Start Fuel Injection
SWSwitch
SYSSystem
T/ATransaxle
TACHTachometer
TBIThrottle Body Electronic Fuel Injection
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−
BODY ELECTRICAL BODY ELECTRICAL SYSTEM
BE−5
1996 LAND CRUISER (RM451U)
Fuel gauge does not operate or abnormal operation.
1. Fuel Receiver Gauge
2. Fuel Sender Gauge
3. Meter Circuit
4. Wire HarnessBE−34
BE−34
BE−32
−
Engine coolant temperature gauge does not operation or
abnormal operate.
1. Engine Coolant Temperature Receiver Gauge
2. Engine Coolant Temperature Sender Gauge
3. Meter Circuit
4. Wire HarnessBE−34
BE−34
BE−32−
Oil pressure gauge does not operate or abnormal operation.
1. Oil Pressure Receiver Gauge
2. Oil Pressure Sender Gauge
3. Meter Circuit
4. Wire HarnessBE−34
BE−34
BE−34−
All illumination lights do not light up.
1. TAIL Fuse (I/P F/B)
2. Light Control Rheostat
3. Wire Harness−
BE−34 −
Brightness does not change even when rheostat turned.1. Bulb
2. Wire Harness−
−
Only one illumination light does not light up.1. Bulb
2. Wire Harness−
−
WARNING LIGHTS:
COMBINATION METER
SymptomSuspect AreaSee page
Warning lights do not lights up.
(Except discharge, SRS and door open)1. GAUGE Fuse (I/P F/B)
2. Meter Circuit
3. Wire Harness−
BE−32 −
Brake warning light does not light up.
1. Bulb
2. Brake Fluid Level Switch
3. Parking Brake Switch
4. Meter Circuit
5. Wire Harness−
BE−34
BE−34
BE−32 −
Open door warning light does not light up.
1. Bulb
2. Door Courtesy Switch
3. DOME Fuse (No.2 R/B)
4. Meter Circuit
5. Wire Harness−
BE−21
BE−21 −
−
−
SRS warning light does not light up
1. Bulb
2. Airbag Sensor Assembly
3. ECU− B Fuse (I/P F/B)
4. Meter Circuit
5. Wire Harness−
−
−
BE−32 −
Discharge warning light does not light up.
1. Bulb
2. IGN Fuse (No.1 J/B)
3. Generator
4. Meter Circuit
5. Wire Harness−
−
−
BE−32 −
Seat belt warning light does not light up.
1. Bulb
2. Seat Belt Buckle Switch
3. Seat Belt Warning Relay (I/P F/B)
4. Meter Circuit
5. Wire Harness−
BE−34 −
BE−32 −
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BR1DM−02
BR−60
−
BRAKE FRONT SPEED SENSOR
1042
Author: Date:
1996 LAND CRUISER (RM451U)
FRONT SPEED SENSOR
COMPONENTS
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BR1DN−02
−
BRAKE FRONT SPEED SENSOR
BR−61
1996 LAND CRUISER (RM451U)
REMOVAL
HINT:
When replacing the sensor or sensor harness, replace the sen-
sor and sensor harness together as a set.
1. DISCONNECT SPEED SENSOR CONNECTOR
2. REMOVE SPEED SENSOR
(a) Remove the 8 clamp bolts holding the sensor harness
from the axle housing.
(b) Remove the bolt and wire tie holding the sensor harness from the stabilizer bar.
(c) Remove the bolt and 2 clips holding the sensor harness
from the frame and body.
(d) Remove the 2 installation bolts and speed sensors from the steering knuckle.
Torque: 18 N·m (185 kgf·cm, 13 ft·lbf)
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R05035
BR1NR−01
Z04921
W00552
R13587
R04759
BR−62
−
BRAKE FRONT SPEED SENSOR
1996 LAND CRUISER (RM451U)
INSPECTION
1. INSPECT SPEED SENSOR
(a) Disconnect the speed sensor connector.
(b) Measure the resistance between terminals FR+ and FR −,
and FL+ and FL−.
Resistance: 0.5 − 1.6 kΩ
If resistance value is not specified, replace the sensor.
(c) Check there is no continuity between each terminal and sensor body.
If there is continuity, replace the sensor.
(d) Connect the speed sensor connector.
2. INSPECT SENSOR INSTALLATION
Check the sensor installation bolt is tightened properly and
there is no clearance between the sensor and axle end.
If not, tighten the bolt. Torque: 18 N·m (185 kgf·cm, 13 ft·lbf)
3. VISUALLY INSPECT SENSOR ROTOR SERRATIONS
(a) Remove the axle hub with disc (See page SA−67).
(b) Inspect the sensor rotor serrations for scratches, cracks,
warping or missing teeth.
(c) Install the axle hub with disc SA−9 ).
NOTICE:
To prevent damage to the serrations, do not strike the axle
hub.
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−
BRAKE FRONT SPEED SENSOR
BR−63
1996 LAND CRUISER (RM451U)
4. CHECK THAT THERE IS NO FOREIGN OBJECT ON
SENSOR
5. CHECK SPEED SENSOR SIGNAL (See page DI−210 )
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BR1DO−01
BR−64
−
BRAKE FRONT SPEED SENSOR
1996 LAND CRUISER (RM451U)
INSTALLATION
Installation is in the reverse order of removal (See page BR−61 ).
HINT:
After installation, check the speed sensor signal (See page DI−190).
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