Page 80 of 1807

IN04I-01
- INTRODUCTIONTERMS
IN-33
33 Author: Date:
1997 SUPRA (RM502U)
TERMS
ABBREVIATIONS USED IN THIS MANUAL
AbbreviationsMeaning
ABSAnti-Lock Brake System
ALRAutomatic Locking Retractor
APPROX.Approximately
A/T, ATMAutomatic Transmission
AT FAutomatic Transmission Fluid
BTDCBefore Top Dead Center
CBCircuit Breaker
CDCompact Disc
CRSChild Restraint System
DOHCDouble Over Head Cam
DPDash Pot
ECUElectronic Control Unit
ELREmergency Locking Retractor
ESAElectronic Spark Advance
EXExhaust (Manifold, Valve)
FIPGFormed in Place Gasket
FLFusible Link
FrFront
H-FuseHigh Current Fuse
IGIgnition
INIntake (Manifold, Valve)
J/BJunction Block
LEDLight Emitting Diode
LHLeft-Hand
LLCLong Life Coolant (Year Around Coolant)
LSDLimited Slip Differential
Max.Maximum
Min.Minimum
MPMultipurpose
M/TManual Transmission
O/D, ODOverdrive
O/SOversize
P&BVProportioning and Bypass Valve
PCVPositive Crankcase Ventilation
PPSProgressive Power Steering
PSPower Steering
RHRight-Hand
RrRear
SRSSupplemental Restraint System
SSMSpecial Service Materials
SSTSpecial Service Tools
STDStandard
Page 1141 of 1807
1 21 2
2 1
1 2
E28 E28
IEIJ1 11
IJ 2 12 IJ2 3A 4 A 20
B 24 B46 A3A18 B25 B7
3 12 8
4 OIL THG KD M G2 G-
W- B W- BB- R
O
BR- Y W- B W- B
W- B W- B
W- B
G- Y
W
GG- YY
G- W G- W WB- R
Y- L
(
SHIELDED)(
SHIELDED) STP TE1FROM P OWER SOURCE SYSTEM (
SEE PAGE 56)
STOP LIGHT
SW DA TA L INK
CONNECTOR 1
S11 D 1
Y A/T FLUID TEMP. SENSOR
EGR GAS TEMP. SENSOR
KICK DOWN SWA 5
E 1
K 4
ELECTRONICALLY CONTROLLED
TRANSMISSION PATTERN
SELECT SW E 8 ENGINE CONTROL MODULEA E 9 , E10B
B 26G1
R
B 27NE
B
1234
DISTRIBUTOR D 4
BR A 32PS
1 2
BR- W BRPOWER STEERING
PRESSURE SW P 3
B 65
W- B
E2
1J 11H 13
NORMAL
MANUAL
NE G1 G2 G-
TE1 +B
15A
STOP
1I 10
152
ELECTRONICALLY CONTROLLED TRANSMISSION
Page 1420 of 1807

MA01F-02
MA-4
- MAINTENANCEUNDER HOOD
41 Author: Date:
1997 SUPRA (RM502U)
UNDER HOOD
GENERAL MAINTENANCE
1. GENERAL NOTES
Maintenance items may vary from country to country. Check the owner's manual supplement in which
the maintenance schedule is shown.
Every service item in the periodic maintenance schedule must be performed.
Periodic maintenance service must be performed according to whichever interval in the periodic main-
tenance schedule occurs first, the odometer reading (miles) or the time interval (months).
Maintenance service after the last period should be performed at the same interval as before unless
otherwise noted.
Failure to do even one item an cause the engine to run poorly and increase exhaust emissions.
2. WINDSHIELD WASHER FLUID
Check that there is sufficient fluid in the tank.
3. ENGINE COOLANT LEVEL
Check that the coolant level is between the ºFULLº and ºLOWº lines on the see-through reservoir.
4. RADIATOR AND HOSES
(a) Check that the front of the radiator is clean and not blocked with leaves, dirt or bugs.
(b) Check the hoses for cracks, kinks, rot or loose connections.
5. BATTERY ELECTROLYTE LEVEL
Check that the electrolyte level of all battery cells is between the upper and lower level lines on the case.
6. BRAKE AND CLUTCH FLUID LEVELS
Check that the brake and clutch fluid levels are near the upper level line on the see-through reservoirs.
7. ENGINE DRIVE BELT
Check drive belt for fraying, cracks, wear or oil contamination.
8. ENGINE OIL LEVEL
Check the level on the dipstick with the engine turned off.
9. POWER STEERING FLUID LEVEL
Check the level on the dipstick.
The level should be in the ºHOTº or ºCOLDº range depending on the fluid temperature.
10. AUTOMATIC TRANSMISSION FLUID LEVEL
(a) Park the vehicle on a level surface.
(b) With the engine idling and the parking brake applied, shift the selector into all positions from ºPº to ºLº,
and then shift into ºPº position.
(c) Pull out the dipstick and wipe off the fluid with a clean rag. Re-insert the dipstick and check that the
fluid level is in the HOT range.
(d) Do this check with the fluid at normal driving temperature (70 - 80°C, 158 - 176°F).
HINT:
Wait until the engine cools down (approx. 30 min.) before checking the fluid level after extended driving at
high speeds, in hot weather, in heavy traffic or pulling a trailer.
11. EXHAUST SYSTEM
If any change in the sound of the exhaust or smell of the exhaust fumes is noticed, have the cause located
and corrected.
Page 1571 of 1807

SR13T-01
SR-2
- STEERINGTROUBLESHOOTING
1886 Author: Date:
1997 SUPRA (RM502U)
TROUBLESHOOTING
PROBLEM SYMPTOMS TABLE
Use the table below to help you find the cause of the problem. The numbers indicate the priority of the likely
cause of the problem. Check each part in order. If necessary, repair or replace these parts.
SymptomSuspect AreaSee page
Hard steering
1. Tires (Improperly inflated)
2. Power steering fluid level (Low)
3. Drive belt (Loose)
4. Front wheel alignment (Incorrect)
5. Steering system joints (Worn)
6. Suspension arm ball joints (Worn)
7. Steering column (Binding)
8. Power steering gear
9. PPS systemSA-2
SR-4
-
SA-3
-
SA-30
SA-35
-
-
SR-54
Poor return
1. Tires (Improperly inflated)
2. Front wheel alignment (Incorrect)
3. Steering column (Binding)
4. Power steering gearSA-2
SA-3
-
-
Excessive play
1. Steering system joints (Worn)
2. Suspension arm ball joints (Worn)
3. Intermediate shaft, Universal joint, Sliding yoke (Worn)
4. Front wheel bearing (Worn)
5. Power steering gear
6. PPS system-
SA-30
SA-35
-
SA-12
-
SR-54
Abnormal noise
1. Power steering fluid level (Low)
2. Steering system joints (Worn)
3. Power steering gearSR-4
-
-
Page 1572 of 1807
SR13U-01
R07281
Normal
Abnormal
- STEERINGPOWER STEERING FLUID
SR-3
1887 Author: Date:
1997 SUPRA (RM502U)
POWER STEERING FLUID
BLEEDING
1. CHECK FLUID LEVEL
(See page SR-4)
2. JACK UP FRONT OF VEHICLE AND SUPPORT IT
WITH STANDS
3. TURN STEERING WHEEL
With the engine stopped, turn the steering wheel slowly from
lock to lock several times.
NOTICE:
Take care that some fluid remains in the oil reservoir.
4. LOWER VEHICLE
5. START ENGINE
Run the engine at idle for a few minutes.
6. TURN STEERING WHEEL
(a) With the engine at idling, turn the steering wheel to left or
right full lock and keep it there for 2-3 seconds, then turn
the wheel to the opposite full lock and keep it there for 2-3
seconds.
(b) Repeat (a) several times.
7. STOP ENGINE
8. CHECK FOR FOAMING OR EMULSIFICATION
If the system has to be bled twice specifically because of foam-
ing or emulsification, check for fluid leaks in the system.
9. CHECK FLUID LEVEL
(See page SR-4)
Page 1573 of 1807

SR13V-01
R00441
R07281
Normal Abnormal
R10552
5 mm (0.20 in.)
or less
Engine Idling Engine Stopped SR-4
- STEERINGPOWER STEERING FLUID
1888 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. CHECK FLUID LEVEL
(a) Keep the vehicle level.
With the engine stopped, check the fluid level in the oil
reservoir.
If necessary, add fluid.
Fluid: ATF DEXRON® II or III
HINT:
Check that the fluid level is within the HOT LEVEL range on the
dipstick of the reservoir cap. If the fluid is cold, check that it is
within the COLD LEVEL range.
(b) Start the engine and run it at idle.
(c) Turn the steering wheel from lock to lock several times to
boost fluid temperature.
Fluid temperature: 80°C (176°F)
(d) Check for foaming or emulsification.
If there is foaming or emulsification, bleed power steering sys-
tem.
(See page SR-3)
(e) With the engine idling, measure the fluid level in the oil
reservoir.
(f) Stop the engine.
(g) Wait a few minutes and remeasure the fluid level in the
reservoir.
Maximum fluid level rise: 5mm (0.20 in.)
If a problem is found, bleed power steering system.
(See page SR-3)
(h) Check the fluid level.
Page 1574 of 1807
Z16580
INSSTSST
OUTPressure Feed Tube
Attachment
PS Vane Pump 2JZ-GE:
2JZ-GTE:
Attachment Attachment PS Vane Pump Attachment
Pressure Feed Tube
- STEERINGPOWER STEERING FLUID
SR-5
1889 Author: Date:
1997 SUPRA (RM502U)
2. CHECK STEERING FLUID PRESSURE
(a) Disconnect the pressure feed tube from the PS vane
pump.
(See page SR-26)
(b) Connect SST over a new gasket, as shown below.
SST 09640-10010 (09641-01010, 09641-01030,
09641-01060)
NOTICE:
Check that the valve of the SST is in the open position.
(c) Bleed the power steering system.
(See page SR-3)
(d) Start the engine and run it at idle.
(e) Turn the steering wheel from lock to lock several times to
boost fluid temperature.
Fluid temperature: 80°C (176°F)
Page 1575 of 1807

Z15498
PS GearOil
Reservior
PS Vane
Pump Closed
SST
Z15499
PS GearOil
Reservior
PS Vane
Pump
SST Open
Z15500
PS GearOil
Reservior
PS Vane
Pump
SST Open SR-6
- STEERINGPOWER STEERING FLUID
1890 Author: Date:
1997 SUPRA (RM502U)
(f) With the engine idling, close the valve of the SST and ob-
serve the reading on the SST.
Minimum fluid pressure:
7,355 kPa (75 kgf.cm
2, 1,067 psi)
NOTICE:
Do not keep the valve closed for more than 10 se-
conds.
Do not let the fluid temperature become too high.
(g) With the engine idling, open the valve fully.
(h) Measure the fluid pressure at engine speeds of 1,000 rpm
and 3,000 rpm.
Difference fluid pressure:
490 kPa (5 kgf.cm
2, 71 psi) or less
NOTICE:
Do not turn the steering wheel.
(i) With the engine idling and valve fully opened, turn the
wheel to full lock.
Minimum fluid pressure:
7,355 kpa (75 kgf,cm
2, 1,067 psi)
NOTICE:
Do not maintain lock position for more than 10 se-
conds.
Do not let the fluid temperature become too high.
(j) Disconnect the SST.
(k) Connect the pressure feed tube.
(See page SR-34)
(l) Bleed the power steering system.
(See page SR-3)