tp sensor TOYOTA LAND CRUISER 1996 J80 Workshop Manual

LU0KK−02
LU−16
−
LUBRICATION OIL COOLER
1996 LAND CRUISER (RM451U)
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE AIR CLEANER CAP AND HOSE
3. REMOVE FRONT EXHAUST PIPE
(a) Disconnect the heated oxygen sensor connector.
(b) Remove the 2 nuts and 2 bolts holding the front exhaust pipe to the rear TWC.
(c) Disconnect the front exhaust pipe, and remove the gas- ket.
(d) Loosen the clamp bolt and disconnect the clamp from the
No.1 support bracket.
(e) Remove the 2 bolts and No.1 support bracket.
(f) Remove the 4 nuts, front exhaust pipe and 2 gaskets.
4. REMOVE NO.1 EXHAUST MANIFOLD
(a) Remove the 3 bolts and No.1 heat insulator.
(b) Remove the 6 nuts, exhaust manifold and gasket.
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−
PREPARATION ENGINE MECHANICAL
PP−3
52
Author: Date:
1996 LAND CRUISER (RM451U)
(09316−00011)Replacer PipeCrankshaft front oil seal
(09316−00051)Replacer ”D”Crankshaft front oil seal
09330−00021Companion Flange Holding ToolCrankshaft pulley
09636−20010Upper Ball Joint Dust Cover
ReplacerCrankshaft timing gear
09816−30010Oil Pressure Switch SocketKnock sensor
09843−18020Diagnosis Check Wire
09950−40011Puller B SetCrankshaft timing gear
(09951−04010)Hanger 150
(09952−04010)Slide Arm
(09953−04020)Center Bolt 150
(09954−04010)Arm 25
(09955−04061)Claw No.6
09950−50012Puller C SetCrankshaft pulley
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PP3KU−01
−
PREPARATION SFI
PP−11
60
Author: Date:
1996 LAND CRUISER (RM451U)
SFI
SST (Special Service Tools)
09268−41047Injection Measuring Tool Set
(09268−41091)NO.7 Union
(90405−09015)No.1 Union
09268−45012EFI Fuel Pressure Gauge
09631−22020Power Steering Hose Nut
14 x 17 mm Wrench SetFuel line flare nut
09816−30010Oil Pressure Switch SocketKnock sensor
09842−30070Wiring ”F” EFI Inspection
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PP2YP−02
−
PREPARATION SUPPLEMENTAL RESTRAINT SYSTEM
PP−63
1996 LAND CRUISER (RM451U)
RECOMMENDED TOOLS
09042−00020Torx Socket T40 .Airbag sensor assembly
09082−00040TOYOTA Electrical Tester.
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RS0OZ−02
−
SUPPLEMENTAL RESTRAINT SYSTEM SRS AIRBAG
RS−1
1100
Author: Date:
1996 LAND CRUISER (RM451U)
SRS AIRBAG
PRECAUTION
NOTICE:
The LAND CRUISER is equipped with an SRS , which comprises a driver airbag \
and a front pas-
senger airbag. Failure to carry out service operations in the correct sequence could cause the
SRS to unexpectedly deploy during servicing, possibly leading to a serio\
us accident. Further,
if a mistake is made in servicing the SRS, it is possible the SRS may fail to\
operate when re-
quired. Before performing servicing (including removal or installation \
of parts, inspection or
replacement), be sure to read the following items carefully, then follow the correct procedure
described in the repair manual.
Malfunction symptoms of the SRS are difficult to confirm, so the DTCs become the mos\
t impor-
tant source of information when troubleshooting. When troubleshooting th\
e SRS, always in-
spect the DTCs before disconnecting the battery.
Even in cases of a minor collision where the SRS does not deploy, the steering wheel pad, front
passenger airbag assembly, and airbag sensor assembly should be inspected (See pages
RS−9 , RS−23 and RS−34 )
Never use SRS parts from another vehicle. When replacing parts, replace them with \
new parts.
Never disassemble and repair the steering wheel pad, front passenger airbag assembly , or air-
bag sensor assembly in order to reuse it.
If the steering wheel pad, front passenger airbag assembly or airbag sen\
sor assembly have
been dropped, or if there are cracks, dents or other defects in the case, br\
acket or connector,
replace them with new ones.
Use a volt/ohmmeter wi th high impedance (10 k Ω/V minimum) for troubleshooting the system’s
electrical circuits.
Information labels are attached to the periphery of the SRS components. Follow the instruc-
tions on the notices.
After work on the SRS is completed, check the SRS warning light (See pa\
ge DI−240).
If the vehicle is equipped with a mobile communication system, refer to the precaution in the
IN section.
CAUTION:
Work must be started after 90 seconds from the time the ignition switch is t\
urned to the ”LOCK”
position and the negative ( −) terminal cable is disconnected from the battery.
(The SRS is equipped with a back− up power source so that if work is started within 90 seconds
of disconnecting the negative ( −) terminal cable of the battery, the SRS may be deployed.)
When the negative (−) terminal cable is disconnected from the battery, the memory of the clock
and audio system will be canceled. So before starting work, make a record o\
f the contents mem-
orized in the audio memory system. When work is finished, reset the audio syst\
ems as they
were before and adjust the clock. To avoid erasing the memory of each memory system, never
use a back−up power supply from outside the vehicle.
Before repairs, remove the airbag sensor if shocks are likely to be applied to the senso\
r during
repairs.
Do not expose the steering wheel pad, front passenger airbag assembly, or airbag sensor as-
sembly directly to hot air or flames.
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RS0P0−01
AB0250Spiral Cable
R13451
RS−2
−
SUPPLEMENTAL RESTRAINT SYSTEM SRS AIRBAG
1996 LAND CRUISER (RM451U)
OPERATION
1. STEERING WHEEL PAD (with AIRBAG)
The inflater and bag of the SRS are stored in the steering wheel
pad and cannot be disassembled. The inflater contains a squib,
igniter charge, gas generant, etc., and inflates the bag when
instructed by the airbag sensor assembly.
2. SPIRAL CABLE (in COMBINATION SWITCH)
A spiral cable is used as an electrical joint from the vehicle body
side to the steering wheel.
3. FRONT PASSENGER AIRBAG ASSEMBLY
The inflater and bag of the SRS are stored in the front passen-
ger airbag assembly and cannot be disassembled.The inflater
contains a squib, igniter charge, gas generant, etc., and inflates
the bag when instructed by the airbag sensor assembly.
4. SRS WARNING LIGHT
The SRS warning light is located on the combination meter. It
goes on to alert the driver of trouble in the system when a mal-
function is detected in the airbag sensor assembly. In normal
operating condition when the ignition switch is turned to the
ACC or ON position, the light goes on for about 6 seconds and
then goes off.
5. AIRBAG SENSOR ASSEMBLY
The airbag sensor assembly is mounted on the floor inside the
console box. The airbag sensor assembly consists of an airbag
sensor, safing sensor, diagnosis circuit and ignition control,
drive circuit, etc.
It receives signals from the airbag sensors and judges whether
the SRS must be activated or not.
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R11937
Airbag Sensor
Assembly
Spiral
Cable
Front Passenger
Airbag Assembly
Steering Wheel
Pad
Instrument Panel
Junction Block Junction
Block No. 1
−
SUPPLEMENTAL RESTRAINT SYSTEM SRS AIRBAG
RS−3
1996 LAND CRUISER (RM451U)
6. SRS CONNECTORS
No.ItemApplication
(1)Terminal Twin−Lock MechanismConnectors 1, 2, 3, 4, 5, 6, 7
(2)Airbag Activation Prevention MechanismConnectors 2, 3, 4
(3)Electrical Connection Check MechanismConnectors 1
(4)Connector Twin −Lock MechanismConnectors 2, 3, 4
(a) All connectors in the SRS are colored yellow to distin-
guish them from other connectors. Connectors having
special functions and specifically designed for the SRS
are used in the locations shown above to ensure high reli-
ability. These connectors use durable gold −plated termi-
nals.
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Z05490
Secondary LockPrimary Lock Lock Lock
Primary Lock Incomplate
(Secondary Lock Prevended) Primary Lock Complate
(Secondary Lock Permitted
Twin−Lock Complated
Z14034
Fig.1
Fig.2 Power Source
SafingSensor Squibs
Airbag
Sensor
RS−6
−
SUPPLEMENTAL RESTRAINT SYSTEM SRS AIRBAG
1996 LAND CRUISER (RM451U)
(4) Connector Twin −Lock Mechanism
With this mechanism connectors (male and female
connectors) are locked by 2 locking devices to in-
crease connection reliability. If the primary lock is in-
complete, ribs interfere and prevent the secondary
lock.
(b) When the vehicle is involved in a frontal collision in the hatched area (Fig. 1) and the shock is larger than the pre-
determined level, the SRS is activated automatically. A
safing sensor is designed to go on at a smaller decelera-
tion rate than the airbag sensor. As illustrated in Fig. 2,
ignition is caused when current flows to the squib, which
happens when a safing sensor and the airbag sensor go
on simultaneously.When a deceleration force acts on the
sensors, two squibs in the driver airbag and front passen-
ger airbag ignite and generate gas. The gas discharging
into the driver airbag and front passenger airbag rapidly
increases the pressure inside the bags, breaking open
the steering wheel pad and instrument panel door.
Bag inflation then ends, and the bags deflate as the gas
is discharged through discharge holes at the bag’s rear or
side.
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RS0PD−01
RS−32
−
SUPPLEMENTAL RESTRAINT SYSTEM AIRBAG SENSOR ASSEMBLY
1131
Author: Date:
1996 LAND CRUISER (RM451U)
AIRBAG SENSOR ASSEMBLY
COMPONENTS
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RS0PE−01
−
SUPPLEMENTAL RESTRAINT SYSTEM AIRBAG SENSOR ASSEMBLY
RS−33
1996 LAND CRUISER (RM451U)
REMOVAL
NOTICE:
Do not open the cover or the case of the ECU and various
computers unless absolutely necessary.
(If the IC terminals are touched, the IC may be destroyed by
static electricity.)
1. REMOVE THESE PARTS:
(a) Transfer shirt knob
(b) Front console box
2. REMOVE AIRBAG SENSOR ASSEMBLY
(a) Disconnect the connector.
NOTICE:
Remove the connector with the sensor assembly installed.
(b) Using a torx wrench remove the 4 screws and the airbag sensor assembly.
Torx wrench: T40 (Part No. 09042 −00020 or locally
manufactured tool)
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