1995 TOYOTA SUPRA wheel

STEERING COLUMN REMOVAL
1. REMOVE STEERING WHEEL PAD
(a) Place the front wheels facing straight ahead.
(b) Remove the No.2 and No.3 covers.
(c) Using a torx socket wrench, loosen the 3 torx screws.
HINT: Loosen the 3 screws until the groove along the screw
circumference catches on the screw case.
(d) Pull the pad out from the steering wheel and disconnect the
airbag connector.
NOTICE: When removing the pad, take care not to pull the
airbag wire harness.
CAUTION:
wWhen storing the pad, keep the upper surface of the pad
facing upward.
wNever disassemble the pad.
2. REMOVE STEERING WHEEL
(a) Disconnect the connector.
(b) Remove the wheel set nut.
(c) Place matchmarks on the wheel and main shaft.
(d) Using SST, remove the wheel.
SST 09950±50010 (09951±05010, 09952±05010,
09953±05020, 09954±05020)
3. REMOVE UPPER AND LOWER COLUMN COVERS
Remove 5 screws.
4. REMOVE THESE PARTS:
(See page BO±45)
(a) Console panel upper
(b) Cluster finish panel
(c) Cluster finish panel RH
(d) Cluster finish panel LH
(e) Cluster finish panel center
(f) Finish panel lower
(g) Finish panel lower LH
(h) Register No.2 duct SR±14
± STEERINGTILT STEERING COLUMN

STEERING COLUMN INSTALLATION
1. INSTALL STEERING COLUMN ASSEMBLY
(a) Torque the 4 column assembly set nuts.
Torque: 25 NVm (260 kgfVcm, 19 ftVlbf)
(b) Install the brake pedal return spring.
(c) Align the matchmarks on the intermediate shaft and control
valve shaft.
(d) Torque the bolt A.
Torque: 35 NVm (360 kgfVcm, 26 ftVlbf)
(e) Torque the bolt B.
Torque: 35 NVm (360 kgfVcm, 26 ftVlbf)
2. INSTALL COMBINATION SWITCH
(a) Tighten the 4 screws.
(b) Connect the 4 connectors and airbag connector.
3. INSTALL THESE PARTS:
(See page BO±45)
(a) Register No.2 duct
(b) Finish panel lower LH
(c) Finish panel lower
(d) Cluster finish panel center
(e) Cluster finish panel LH
(f) Cluster finish panel RH
(g) Cluster finish panel
(h) Console panel upper
4. INSTALL UPPER AND LOWER COLUMN COVER
Tighten the 5 screws.
5. CENTER SPIRAL CABLE
(a) Check that the front wheels are facing straight ahead.
(b) Turn the spiral cable counterclockwise by hand until it
becomes harder to turn the cable.
(c) Then rotate the spiral cable clockwise about 3 turns to align
the red mark.
HINT: The spiral cable will rotate about 3 turns to either left
or right of the center.
6. INSTALL STEERING WHEEL
(a) Align the matchmarks on the wheel and main shaft.
(b) Torque the wheel set nut.
Torque: 35 NVm (360 kgfVcm, 26 ftVlbf)
(c) Connect the connector.
± STEERINGTILT STEERING COLUMNSR±21

7. INSTALL STEERING WHEEL PAD
(a) Connect the airbag connector.
(b) Install the pad after confirming that the circumference groove
of the torx screw is caught on the screw case.
(c) Using a torx socket wrench, torque the 2 screws.
Torque: 7.1 NVm (72 kgfVcm, 62 inVlbf)
NOTICE:
wMake sure the pad is installed to the specified torque.
wIf the pad has been dropped, or there are cracks, dents or
other defects in the case or connector, replace the pad
with a new one.
wWhen installing the pad, take care that the wiring does
not interfere with other parts and is not pinched between
other parts.
8. CHECK STEERING WHEEL CENTER POINT SR±22
± STEERINGTILT STEERING COLUMN

(c) Using a brass bar and hammer, stake the washer.
NOTICE: Avoid any impact to the rack.
16. INS TALL RH AND LH RACK BO O TS , CLAMP S AND
CLIPS
(a) Ensure that the steering rack hole is not clogged with grease.
HINT: If the hole is clogged, the pressure inside the boot will
change after it is assembled and the steering wheel turned.
(b) Install the boot.
NOTICE: Be careful not to damage or twist the boot.
(c) Install the clamp and clip to the boot.
HINT: When the rack guide spring cap is towards you, install
the clip and clamp in the positions shown in the illustration.
17. INSTALL TIE ROD ENDS
(a) Screw the lock nut and tie rod end onto the rack end until the
matchmarks are aligned.
(b) After adjusting toe±in, torque the nut.
Torque: 56 NVm (570 kgfVcm, 41 ftVlbf)
18. INSTALL TURN PRESSURE TUBES
(a) Install 2 new union seats.
(b) Using SST, install the 2 tubes.
SST 09633±00020
Torque: 24 NVm (243 kgfVcm, 17 ftVlbf)
HINT: Use a torque wrench with a fulcrum length of 300 mm
(11.81 in.)
(c) Torque the 2 union bolts over 4 new gaskets.
Torque: 34 NVm (350 kgfVcm, 25 ftVlbf)
POWER STEERING GEAR
INSTALLATION
1. INSTALL POWER STEERING GEAR ASSEMBLY
(a) Temporarily install the 2 bolts and nuts.
(b) After installing the rack housing bracket and grommet, torque
the 2 bolts and nuts.
Torque: 75 NVm (770 kgfVcm, 55 ftVlbf)
± STEERINGPOWER STEERING GEARSR±45

2. INSTALL RACK HOUSING BRACKET AND GROMMET
Torque the 2 bolts and nuts.
Torque: 75 NVm (770 kgfVcm, 55 ftVlbf)
3. CONNECT PPS SOLENOID CONNECTOR
4. CONNECT PRESSURE FEED TUBE
Torque the union bolt over a new gasket.
Torque: 49 NVm (500 kgfVcm, 36 ftVlbf)
5. CONNECT RETURN TUBE
Torque the union bolt over 2 new gaskets.
Torque: 49 NVm (500 kgfVcm, 36 ftVlbf)
6. CONNECT RH AND LH TIE ROD ENDS
(See page SA±17)
7. CONNECT INTERMEDIATE SHAFT
(See page SR±21)
8. INSTALL FR SUSPENSION MEMBER PROTECTOR
Torque the 4 bolts.
9. INSTALL ENGINE UNDER COVER
Install the 10 screws.
10. BLEED POWER STEERING SYSTEM
(See page SR±9)
11. CHECK FRONT WHEEL ALIGNMENT
(See page SA±4) SR±46
± STEERINGPOWER STEERING GEAR

ELECTRONIC CONTROL SYSTEM
TROUBLESHOOTING FLOW±CHART
Trouble Symptom
wHard steering at idle or low±speed driving.
wSteering too sensitive during high±speed driving.
Preliminary Check
wCheck tire pressure.
wCheck lubrication of suspension and steering linkage.
wCheck front wheel alignment.
wCheck steering system joint and suspension arm ball joint.
wCheck for bent steering column.
wCheck that all connectors are secure.
wCheck PS pump fluid pressure. (See page SR±37)
Turn ignition switch on.
Is ECU±IG fuse normal?
Disconnect the ECU connector.
Fuse faulty.
Replace fuse.
Is operation normal?Short circuit in wire
harness between fuse
and ECU terminal +B.
Check 1.
Check that there is battery voltage (10 Ð 14V) between the
ECU terminal +B and body ground.
Open circuit in wire harness between the fuse and ECU terminal +B.
± STEERINGELECTRONIC CONTROL SYSTEMSR±47

Check 2.
Check that there is continuity between the ECU terminal GND and
body ground.

Open circuit in wire harness between the ECU terminal
GND and body ground.

Body ground faulty.
Check 3.
(a) Jack up one of the rear wheels.
(b) Connect a voltmeter between the ECU connector terminals
SPD and GND.
(c) Spin the rear wheel and check that the meter needle deflects
0 V " 5 V or more " 0 V.
Check 4.
Check that there is no continuity between terminals SOL (+) or
SOL (±) and GND.

Open or short circuit in wire harness between the ECU
terminal SPD and speed sensor.

Speed sensor faulty (See BE section.)

Short circuit in wire harness between the terminals
SOL (+) and SOL (±).

Solenoid valve faulty. SR±48
± STEERINGELECTRONIC CONTROL SYSTEM

SERVICE SPECIFICATIONS
SERVICE DATA
 Steering wheel freeplay Maximum 30 mm (1.18 in.)
 STEERING COLUMN 
  Pawl stopper Mark 
 1 or A 12.68±12.74 mm (0.4992±0.5016 in.)
 2 or B 12.61±12.67 mm (0.4965±0.4988 in.)
 3 or C 12.54±12.60 mm (0.4937±0.4961 in.)
 4 or D 12.47±12.53 mm (0.4909±0.4933 in.) 5 or E 12.40±12.46 mm (0.4882±0.4906 in.) 6 or F 12.33±12.39 mm (0.4854±0.4878 in.) 
7 or G
 
12.26±12.32 mm (0.4827±0.4850 in.) 
 PS ON±VEHICLE INSPECTION
 
 
  Maximum rise of oil level Below 5 mm (0.20 in.)
  Oil pressure at idle speed with valve closed Minimum 7,845 kPa (80 kgf/cm2, 1,140 psi)
  Steering effort at idle speed Maximum 0.4 NVm (3.6 kgfVcm, 3.1 in.Vlbf)
 PS VANE PUMP 
  Rotor shaft bushing oil clearance STD 0.03±0.05 mm (0.0012±0.0020 in.)
  Rotor shaft bushing oil clearance Maximum 0.07 mm (0.0028 in.)
  Vane plate to rotor groove clearance Maximum 0.03 mm (0.0012 in.)  Vane plate height Minimum 8.6 mm (0.339 in.)  Vane plate thickness Minimum 1.40 mm (0.0551 in.) 
  Vane plate length Minimum
 
 14.99 mm (0.5902 in.)
  Vane plate length Rotor and cam ring mark 
 NONE 14.999±15.001 mm (0.59051±0.59059 in.)
 1 14.997±14.999 mm (0.59043±0.59051 in.)
 2 14.995±14.997 mm (0.59035±0.59043 in.)
 3 14.993±14.995 mm (0.59027±0.59035 in.)
 4 14.991±14.993 mm (0.59020±0.59027 in.)
 Flow control spring length Minimum 33 mm (1.30 in.)
 Pump rotating torque 0.2 NVm (2.5 kgfVcm, 2.2 in.Vlbf) or less PS GEAR HOUSING 
 Steering rack runout Maximum 0.30 mm (0.0118 in.) 
 Total preload
 
 1.0±1.9 NVm (10±20 kgfVcm, 8.7±17.4 in.Vlbf)
 Solenoid valve resistance 6±11

± STEERINGSERVICE SPECIFICATIONSSR±51