Page 1275 of 1807
S02980
FilterCap
S02981
Vacuum Gauge
EC047-02
- EMISSION CONTROL (2JZ-GTE)EXHAUST GAS RECIRCULATION (EGR) SYSTEM
EC-7
1244 Author: Date:
1997 SUPRA (RM502U)
EXHAUST GAS RECIRCULATION
(EGR) SYSTEM
INSPECTION
1. CHECK AND CLEAN FILTER IN EGR VACUUM
MODULATOR
(a) Remove the cap and 2 filters.
(b) Check the filter for contamination or damage.
(c) Using compressed air, clean the filter.
(d) Reinstall the 2 filters and cap.
HINT:
Install the filter with the coarser surface facing the atmospheric
side (outward).
2. INSTALL VACUUM GAUGE
Using a 3-way connector, connect a vacuum gauge to the hose
between the EGR valve and EGR vacuum modulator.
3. INSPECT SEATING OF EGR VALVE
Start the engine and check that the engine starts and runs at
idle.
4. INSPECT VSV OPERATION WITH COLD ENGINE
(a) M/T
The coolant temperature should be below 50°C (122°F).
(1) Start the engine and check idling.
(2) When idling with the lever shifting in the N position,
press accelerator pedal slowly to hold the engine
speed at 1,600 - 1,800 rpm.
(3) Check that the vacuum gauge indicates zero.
(b) A/T
The coolant temperature should be below 65°C (149°F).
(1) Chock the 4 wheels.
(2) Fully apply the parking brake.
(3) Connect a tachometer to the engine.
(4) Start the engine and check idle.
(5) Keep your foot pressed firmly on the brake pedal.
(6) Shift into the D position. Press the accelerator pedal
slowly to hold the engine speed at 1,600 - 1,800
rpm.
(7) Check that the vacuum gauge indicates zero.
5. INSPECT VSV OPERATION WITH HOT ENGINE
(a) M/T
Warm up the engine. The coolant temperature in 50°C
(122°F) or more.
(1) When idling with the lever shifting in the N position,
press accelerator pedal slowly to hold the engine
speed at 1,600 - 1,800 rpm.
(2) Check that the vacuum gauge indicates low vacu-
um momentarily.
Page 1276 of 1807
S02982
To Intake
Manifold
S02983
Engine Stopped
Air PQ
S02984
Engine at
3,500 rpm
Air PQ EC-8
- EMISSION CONTROL (2JZ-GTE)EXHAUST GAS RECIRCULATION (EGR) SYSTEM
1245 Author: Date:
1997 SUPRA (RM502U)
(b) A/T
Warm up the engine. The coolant temperature in 65°C
(149°F) or more.
(1) Chock the 4 wheels.
(2) Fully apply the parking brake.
(3) Connect a tachometer to the engine.
(4) Start the engine and check idling.
(5) Keep your foot pressed firmly on the brake pedal.
(6) Shifting into the D position. Press the accelerator
pedal slowly to hold the engine speed at 1,600 -
1,800 rpm.
(7) Check that the vacuum gauge indicates low vacu-
um.
6. REMOVE VACUUM GAUGE
Remove the vacuum gauge, and reconnect the vacuum hoses
to their proper locations.
7. INSPECT EGR VALVE
(a) Apply vacuum directly to the EGR valve with the engine
idling.
(b) Check that the engine runs rough or dies.
(c) Reconnect the vacuum hoses to their proper locations.
If no problem is found during this inspection, system is normal;
otherwise inspect each part.
8. INSPECT VSV FOR EGR
(See page SF-69)
9. DISCONNECT VACUUM HOSES FROM EGR VACUUM
MODULATOR
Disconnect the 2 vacuum hoses from ports P and Q of the EGR
vacuum modulator.
10. INSPECT EGR VACUUM MODULATOR OPERATION
(a) Block port P with your finger.
(b) Blow air into port Q, and check that air passes through to
the air filter side freely.
(c) Start the engine, and maintain speed at 3,500 rpm.
(d) Repeat the above test. Check that there is a strong resis-
tance to air flow.
11. RECONNECT VACUUM HOSES TO EGR VACUUM
MODULATOR
Reconnect the 2 vacuum hoses to the proper locations.
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 1527 of 1807
SF0HY-01
P11477
Gasket
ECT Sensor
ECT Sensor Connector
Non-reusable part SF-72
- SFI (2JZ-GTE)ENGINE COOLANT TEMPERATURE (ECT) SENSOR
1398 Author: Date:
1997 SUPRA (RM502U)
ENGINE COOLANT TEMPERATURE (ECT) SENSOR
COMPONENTS
Page 1528 of 1807
SF0HZ-01
P11473
SST
Z02917
Ohmmeter
Acceptable
TEMPERATURE °C(°F)
RESISTANCE kW
- SFI (2JZ-GTE)ENGINE COOLANT TEMPERATURE (ECT) SENSOR
SF-73
1399 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE ECT SENSOR
(a) Disconnect the ECT sensor connector.
(b) Using SST, remove the ECT sensor and gasket.
SST 09205-76030
3. INSPECT ECT SENSOR
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance: Refer to the graph
If the resistance is not as specified, replace the ECT sensor.
4. REINSTALL ECT SENSOR
(a) Install a new gasket to the ECT sensor.
(b) Using SST, install the ECT sensor.
SST 09205-76030
(c) Connect the ECT sensor connector.
5. REFILL WITH ENGINE COOLANT
Page 1778 of 1807
SS-66
- SERVICE SPECIFICATIONSBODY ELECTRICAL
223 Author: Date:
1997 SUPRA (RM502U)700
630 - 770
1,000915 - 1,115
2,0001,920 - 2,220
3,0002,890 - 3,350
4,0003,940 - 4,400
5,0005,025 - 5,425
6,5006,650 - 6,950
7,0007,025 - 7,625
OD/TRIP METER
(Connector Connected)
1 - Ground (Ignition switch position ON)Battery positive voltage
4 - Ground (Light Control switch position TAIL or HEAD)Battery positive voltage
5 - 7 (Ignition switch ON and drive the vehicle slowly)0V e Battery positive voltage
6 - 7 (Ignition switch ON and drive the vehicle slowly)0V e more than 5V
8 - Ground (Constant)Battery positive voltage
10 - Ground (Ignition SW ON, Light Control SW TAIL or
HEAD and turn the Light Control Rheostat knob to clockwise)6V " 0V
FUEL RECEIVER GAUGE
Between terminalsResistance (W)
A - BApprox. 269.7
A - CApprox. 123.5
B - CApprox. 146.2
FUEL SENDER GAUGE
Float position: mm (in.)Resistance (W)
F: Approx. 33.8 (1.331)Approx. 4.0
1/2: Approx. 44.8 (1.764)Approx. 55.0
E: Approx. 141.1 (5.555)Approx. 107.0
ENGINE COOLANT TEMPERATURE RECEIVER GAUGE
Between terminalsResistance (W)
A - BApprox. 229.7
A - CApprox. 54.0
B - CApprox. 175.7
ENGINE COOLANT TEMPERATURE SENDER GAUGE
Temperature °C (°F)Resistance (W)
50 (122.0)160 - 240
120 (248.0)17.1 - 21.2
LIGHT FAILURE SENSOR
3 - Ground (Light Control SW position OFF)No voltage
3 - Ground (Light Control SW position TAIL or HEAD)Battery positive voltage
4 - Ground (Ignition SW position LOCK or ACC)No voltage
4 - Ground (Ignition SW position ON)Battery positive voltage
7 - Ground (Stop Light SW position OFF)No voltage
7 - Ground (Stop Light SW position ON)Battery positive voltage
8 - Ground (Engine stop)No voltage
8 - Ground (Engine running)Battery positive voltage
INTEGRATION RELAY
