1995 TOYOTA SUPRA wheel

TORQUE SPECIFICATIONS
 Part tightened NVm kgfVcm ftVlbf
 STEERING COLUMN   
  Steering wheel set nut 35 360 26  Steering wheel pad set screw 7.1 72 62 in.Vlbf  Column assembly set nut 25 260 19 
 Intermediate shaft x Sliding yoke
 
35
 
360
 
26 
  Tilt memory bolt x Square nut
 
 6.4
 
 65
 
 56 in.Vlbf
  Tilt lever assembly set screw 4.7 48 42 in.Vlbf
  Tilt pawl set nut 5.9 60 52 in.Vlbf
  Tilt lever retainer set nut 15 150 11
  Tilt memory bolt set nut 5.9 60 52 in.Vlbf
  Turn signal bracket set bolt 8.8 90 78 in.Vlbf
  Sliding yoke 35 360 26
  Compression set screw 6.4 65 56 in.Vlbf PS VANE PUMP   
  PS vane pump set bolt 58 590 42 
  Union bolt
 
 49
 
 500
 
 36
  Vane pump pulley set nut 43 440 32
  Front housing x Rear housing 17 170 12
  Pressure port union 83 850 61
  Oil reservoir set bolt (2JZ±GE) Front side bolt 13 130 9
 Rear side bolts 17 170 12
  Suction port union set bolt (2JZ±GTE) 13 130 9
 PS GEAR HOUSING   
  Tie rod end x Steering knuckle 49 500 36  Control valve shaft x Intermediate shaft 35 360 26  Pressure feed and return tube set union bolts 49 500 36 
  Gear housing set bolt and nut
 
 75
 
 770
 
 55
  Pressure control valve assembly x Control valve housing 18 185 13
  Control valve housing set bolt 18 185 13
  Self±locking nut 39 400 29
  Rack housing cap 69 700 501
  Rack guide spring cap lock nut 56 567 41
  Rack end 90 914 66
  Tie rod end lock nut 56 570 41  Turn pressure tube union nut 24 243 17  Turn pressure tube union bolt 34 350 25
SR±52± STEERINGSERVICE SPECIFICATIONS

GENERAL DESCRIPTION
The SUPRA is equipped with an SRS (Supplemental Restraint System), which comprises a driver
airbag, and front passenger airbag if fitted. Failure to carry out service operations in the correct
sequence could cause the SRS to unexpectedly deploy during servicing, possibly leading to a seri-
ous accident. Further, if a mistake is made in servicing the SRS, it is possible the SRS may fail to
operate when required. Before performing servicing (including removal or installation of parts, in-
spection or replacement), be sure to read the following items carefully, then follow the correct pro-
cedure described in the repair manual.
1. Malfunction symptoms of the SRS are difficult to confirm, so the diagnostic trouble codes become the most
important source of information when troubleshooting. When troubleshooting the SRS, always inspect the
diagnostic trouble codes before disconnecting the battery.
(See page RS±44)
2. Work must be started after 90 seconds from the time the ignition switch is turned to the ºLOCKº
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 from the battery, the SRS may deploy.)
When the negative (±) terminal cable is disconnected from the battery, memory of the clock and audio sys-
tems will be canceled. So before starting work, make a record of the contents memorized by the audio
memory system. When work is finished, reset the audio systems as 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.
3. Even in cases of a minor collision where the SRS does not deploy, the steering wheel pad, front passenger
airbag assembly, front airbag sensors and center airbag sensor assembly should be inspected.
(See pages RS±10, 20, 30, and 33)
4. Never use SRS parts from another vehicle. When replacing parts, replace them with new parts.
5. Before repairs, remove the airbag sensors if shocks are likely to be applied to the sensors during repairs.
6. Never disassemble and repair the steering wheel pad, front passenger airbag assembly, front airbag
sensors or center airbag sensor assembly in order to reuse it.
7. If the steering wheel pad, front passenger airbag assembly, front airbag sensors or center airbag sensor
assembly have been dropped, or if there are cracks, dents or other defects in the case, bracket or
connector, replace them with new ones.
8. Do not expose the steering wheel pad, front passenger airbag assembly, front airbag sensors or center
airbag sensor assembly directly to hot air or flames.
9. Use a volt/ohmmeter with high impedance (10 k
/V minimum) for troubleshooting the system's electrical
circuits.
10. Information labels are attached to the periphery of the SRS components. Follow the instructions on the
notices.
11. After work on the SRS is completed, check the SRS warning light.
(See page RS±44)
12. If the vehicle is equipped with a mobile communication system, refer to the precaution in the IN section. RS±2
± SUPPLEMENTAL RESTRAINT SYSTEMGENERAL DESCRIPTION

DESCRIPTION
This vehicle is equipped with an SRS (Supplemental Re-
straint System) which comprises a driver airbag, and front
passenger airbag if fitted. Where fitted, it is designed to be of
benefit only in conjunction with the front seat belt(s) being
worn. In a collision, if the shock is greater than a specified val-
ue, the airbag(s) stored in the steering wheel pad and front
passenger airbag assembly are inflated instantaneously.
LOCATION OF COMPONENTS
± SUPPLEMENTAL RESTRAINT SYSTEMDESCRIPTIONRS±3

OPERATION
FUNCTION OF COMPONENTS
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 con-
tains a squib, igniter charge, gas generant, etc., and inflates
the bag when instructed by the center airbag sensor assem-
bly.
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 pas-
senger airbag assembly and cannot be disassembled.
The inflater contains a squib, igniter charge, gas generant,
etc., and inflates the bag when instructed by the center airbag
sensor assembly.
4. SRS WARNING LIGHT
The SRS warning light is located on the cluster finish panel.
It goes on to alert the driver of trouble in the system when a
malfunction is detected in the center airbag sensor assembly.
In normal operating conditions 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. FRONT AIRBAG SENSOR
A front airbag sensor is mounted inside each of the front fend-
ers. The sensor unit is a mechanical type. When the sensor
detects a deceleration force above a predetermined limit,
contacts is made in the sensor, sending a signal to the center
airbag sensor assembly. The sensor cannot be disas-
sembled. RS±4
± SUPPLEMENTAL RESTRAINT SYSTEMOPERATION

When the vehicle is involved in a frontal collision in the
hatched area (Fig. 1) and the shock is larger than a predeter-
mined level, the SRS is activated automatically. A safing sen-
sor is designed to go on at a smaller deceleration rate than
the front and center airbag sensors. As illustrated in Fig. 2,
ignition is caused when current flows to the squib, which hap-
pens when a safing sensor and a front airbag sensor and/or
the center airbag sensor go on simultaneously. When a de-
celeration force acts on the sensors, two squibs in the driver
airbag and front passenger airbag ignite and generate gas.
The gas discharging into the driver and front passenger air-
bags rapidly increases the pressure inside the bags, break-
ing 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. RS±8
± SUPPLEMENTAL RESTRAINT SYSTEMOPERATION

PREPARATION
SST (SPECIAL SERVICE TOOLS)
SRS Airbag Deployment Tool
Diagnosis Check Wire
Puller C SetSteering wheel
RECOMMENDED TOOLS
Torx Socket T30
Torx Socket T40
TOYOTA Electrical Tester Set
Steering wheel pad
Center airbag sensor assembly
EQUIPMENT
 
 Torque wrench 
 
 
 Bolt: Length: 35 mm (1.38 in.) Pitch: 1.0 mm (0.039 in.)
Diam.: 6.0 mm (0.236 in.) 
 Airbag disposal
 
 
Tire Width: 185 mm (7.28 in.) Inner diam.: 360mm (14.17 in.) 
 
Airbag disposal
 
 
Tire with disc wheel Width: 185 mm (7.28 in.)
Inner diam.: 360 mm (14.17 in.) 
 
Airbag disposal
 
 
Vinyl bag 
 
Airbag disposal
± SUPPLEMENTAL RESTRAINT SYSTEMPREPARATIONRS±9

STEERING WHEEL PAD AND
SPIRAL CABLE
INSPECTION ITEMS
1. VEHICLES NOT INVOLVED IN A COLLISION
(a) Do a diagnostic system check. (See page RS±44)
(b) Do a visual check which includes the following items with the
steering wheel pad (with airbag) installed in the vehicle.
wCheck for cuts, minute cracks or marked discoloration
of the steering wheel pad top surface and grooved
portion.
2. VEHICLES INVOLVED IN A COLLISION
IF THE AIRBAG IS NOT DEPLOYED
(a) Do a diagnostic system check. (See page RS±44)
(b) Do a visual check which includes the following items with the
steering wheel pad (with airbag) removed from the vehicle.
wCheck for cuts and cracks in, or marked discoloration of
the steering wheel pad top surface and its grooved
portion.
wCheck for cuts and cracks in wire harnesses, and for
chipping in connectors.
wCheck for deformation of the horn button contact plate
of the steering wheel.
HINT:
wIf the horn button contact plate of the steering wheel is
deformed, never repair it. Always replace the steering
wheel assembly with a new one.
wThere should be no interference between the steering
wheel pad and the steering wheel, and the clearance
should be uniform all the way around when the new
steering wheel pad is installed on the steering wheel.
CAUTION: For removal and installation of the steering
wheel pad, see page RS±12, ºSTEERING WHEEL PAD
AND SPIRAL CABLE REMOVAL AND INSTALLATIONº
and be sure to follow the correct procedure. RS±10
± SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLE

IF THE AIRBAG IS DEPLOYED
(a) Do a diagnostic system check. (See page RS±44)
(b) Do a visual check which includes the following items with the
steering wheel pad (with airbag) removed from the vehicle.
wCheck for deformation of the horn button contact plate
of the steering wheel.
wCheck for damage to the spiral cable connector and wire
harness.
HINT:
wIf the horn button contact plate of the steering wheel is
deformed, never repair it. Always replace the steering
wheel assembly with a new one.
wThere should be no interference between the steering
wheel pad and the steering wheel, and the clearance
should be uniform all the way around when the new
steering wheel pad is installed on the steering wheel.
REPLACEMENT REQUIREMENTS
In the following cases, replace the steering wheel pad, steer-
ing wheel or spiral cable.
wIf the airbag has been deployed.
wIf the steering wheel pad or spiral cable has been found
to be faulty in troubleshooting.
wIf the steering wheel pad, steering wheel or spiral cable
has been found to be faulty during the check in items
1±(b) or 2±(b).
wIf the steering wheel pad has been dropped.
CAUTION: For replacement of the steering wheel pad,
see page RS±12, ºSTEERING WHEEL PAD AND SPIRAL
CABLE REMOVAL AND INSTALLATIONº and be sure to
follow the correct procedure.
± SUPPLEMENTAL RESTRAINT SYSTEMSTEERING WHEEL PAD AND SPIRAL CABLERS±11