TOYOTA SUPRA 1997 Service Repair Manual
Manufacturer: TOYOTA, Model Year: 1997, Model line: SUPRA, Model: TOYOTA SUPRA 1997Pages: 1807, PDF Size: 39.36 MB
Page 201 of 1807
N08911
B
AC
N08959
F
1/2
E
Z09401
Ignition
Switch
BatteryWarning Light
N08933
N08993
- BODY ELECTRICALCOMBINATION METER
BE-45
2023 Author: Date:
1997 SUPRA (RM502U)
6. INSPECT FUEL RECEIVER GAUGE RESISTANCE
Measure the resistance between terminals.
Between terminalsResistance (W)
A - BApprox. 269.7
A - CApprox. 123.5
B - CApprox. 146.2
If resistance value is not as specified, replace the fuel receiver
gauge.
7. INSPECT FUEL SENDER GAUGE RESISTANCE
Measure the resistance between terminals 2 and 3 for each
float position.
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
If resistance value is not as specified, replace the sender
gauge.
8. INSPECT FUEL LEVEL WARNING LIGHT
(a) Disconnect the connector from the sender gauge.
(b) Connect terminals 1 and 3 on the wire harness side con-
nector.
(c) Turn the ignition switch ON, check that the warning light
lights up.
If the warning light does not light up, test the bulb or inspect wire
harness.
9. INSPECT FUEL LEVEL WARNING SWITCH OPERA-
TION
(a) Apply battery positive voltage between terminals 1 and 3
through a 3.4 W test bulb, check that the bulb lights up.
HINT:
It will take a short time for the bulb to light up.
(b) Submerge the switch in fuel, check that the bulb goes out.
If operation is not as specified, replace the sender gauge.
Page 202 of 1807
Z07423
Ignition
Switch
Battery Engine Coolant Temperature Gauge
Sender
Gauge
Z14747
Battery Engine Coolant Temperature Gauge
Test Bulb
(3W)
Z09421
A
BC
N15887
BE-46
- BODY ELECTRICALCOMBINATION METER
2024 Author: Date:
1997 SUPRA (RM502U)
10. INSPECT ENGINE COOLANT TEMPERATURE RE-
CEIVER GAUGE OPERATION
(a) Disconnect the connector from the sender gauge.
(b) Turn the ignition switch ON, check that the receiver gauge
needle indicates COOL.
(c) Ground terminal on the wire harness side connector
through a 3 W test bulb.
(d) Turn the ignition switch ON, check that the bulb lights up
and that the receiver gauge needle moves toward the hot
side.
If operation is as specified, replace the sender gauge.
Then recheck the system.
If operation is not as specified, measure the receiver gauge re-
sistance.
11. INSPECT ENGINE COOLANT TEMPERATURE RE-
CEIVER GAUGE RESISTANCE
Measure the resistance between terminals.
HINT:
Connect the test leads so that the current from the ohmmeter
can flow according to the chart order.
Between terminalsResistance (W)
A - BApprox. 229.7
A - CApprox. 54.0
B - CApprox. 175.7
If resistance value is not as specified, replace the engine cool-
ant temperature receiver gauge.
12. INSPECT ENGINE COOLANT TEMPERATURE SEND-
ER GAUGE RESISTANCE
Measure the resistance between terminal and gauge body.
Temperature °C (°F)Resistance (W)
50 (122.0)160 ~ 240
120 (248.0)17.1 ~ 21.2
If resistance value is not as specified, replace the engine cool-
ant temperature sender gauge.
Page 203 of 1807
N06640
BE0044
Ignition
Switch
BatteryWarning Light
N09645
ON
OFF
N09646
ON
OFF
Z07431
Ignition
Switch
BatteryWarning Light
- BODY ELECTRICALCOMBINATION METER
BE-47
2025 Author: Date:
1997 SUPRA (RM502U)
13. INSPECT LOW OIL PRESSURE SWITCH CONTINUITY
(a) Check that there is continuity between terminal and
ground with the engine stopped.
(b) Check that there is no continuity between terminal and
ground with the engine running.
HINT:
Oil pressure should be over 29 kPa (0.3 kgf/cm
2, 4.3 psi)
If operation is not as specified, replace the switch.
14. INSPECT LOW OIL PRESSURE WARNING LIGHT
(a) Disconnect the connector from the warning switch and
ground terminal on the wire harness side connector.
(b) Turn the ignition switch ON, check that the warning light
lights up.
If the warning light does not light up, test the bulb or inspect wire
harness.
15. INSPECT ENGINE OIL LEVEL WARNING SWITCH
CONTINUITY
(a) Check that there is continuity between terminal with the
switch in each position.
(b) Heat the switch to above 60°C (140°F) in an oil bath.
(c) Check that there is continuity between terminals with the
switch ON (float up).
(d) Check that there is no continuity between terminals with
the switch OFF (float down).
If operation is not as specified, replace the switch.
16. INSPECT ENGINE OIL LEVEL WARNING LIGHT
(a) Disconnect the connector from the switch.
(b) Ground terminal 1 on the wire harness connector.
(c) Turn the ignition switch ON. Check that the warning light
lights up approximately 40 seconds later.
If the warning light does not light up, inspect bulb or wire har-
ness.
Page 204 of 1807
N08966
BE1217
Ignition
Switch
BatteryWarning Light
N09510
BE0044
Ignition
Switch
BatteryWarning Light BE-48
- BODY ELECTRICALCOMBINATION METER
2026 Author: Date:
1997 SUPRA (RM502U)
17. INSPECT BRAKE FLUID LEVEL WARNING SWITCH
CONTINUITY
(a) Remove the reservoir tank cap and strainer.
(b) Disconnect the connector.
(c) Check that there is no continuity between terminals with
the switch OFF (float up).
(d) Use syphon, etc. to take fluid out of the reservoir tank.
(e) Check that there is continuity between terminals with the
switch ON (float down).
(f) Pour the fluid back in the reservoir tank.
If operation is not as specified, replace the switch.
18. INSPECT BRAKE FLUID LEVEL WARNING LIGHT
(a) Disconnect the connector from the brake fluid warning
switch.
(b) Release the parking brake pedal.
(c) Connect terminals on the wire harness side of the level
warning switch connector.
(d) Start the engine, check that the warning light lights up.
If the warning light does not light up, test the bulb or wire har-
ness.
19. INSPECT PARKING BRAKE SWITCH CONTINUITY
(a) Check that there is continuity between terminal and
switch body with the switch ON (switch pin released).
(b) Check that there is no continuity between terminal and
switch body with the switch OFF (switch pin pushed in).
If operation is not as specified, replace the switch or inspect
ground point.
20. INSPECT PARKING BRAKE WARNING LIGHT
(a) Disconnect the connector from the parking brake switch
and the brake fluid warning switch.
(b) Ground terminal on the wire harness side connector.
(c) Start the engine, check that the warning light lights up.
If the warning light does not light up, test the bulb or inspect wire
harness.
Page 205 of 1807
Z07425
12
10
111 2 345
6
789
Wire Harness Side
Z07426
Ignition
Switch
BatteryWarning Light
- BODY ELECTRICALCOMBINATION METER
BE-49
2027 Author: Date:
1997 SUPRA (RM502U)
21. INSPECT LIGHT FAILURE SENSOR CIRCUIT
Disconnect the connector from the sensor and inspect the con-
nector on the wire harness side, as shown.
Tester connectionConditionSpecified condition
1 - GroundConstantContinuity*
2 - GroundConstantContinuity*
9 - GroundConstantContinuity*
10 - GroundConstantContinuity*
11 - GroundConstantContinuity
12 - GroundConstantContinuity*
3 - GroundLight control switch position OFFNo Voltage
3 - GroundLight control switch position TAIL or HEADBattery positive voltage
4 - GroundIgnition switch position LOCK or ACCNo voltage
4 - GroundIgnition switch position ONBattery positive voltage
7 - GroundStop light switch position OFFNo voltage
7 - GroundStop light switch position ONBattery positive voltage
8 - GroundEngine condition StopNo voltage
8 - GroundEngine condition RunningBattery positive voltage
*: There is the resistance because this circuit is grounded
through the bulb.
If circuit is as specified, replace the sensor.
If the circuit is not as specified, inspect the circuits connected
to other parts.
22. INSPECT LIGHT FAILURE WARNING LIGHT
(a) Disconnect the connector from the light failure sensor and
ground terminal 4 on the wire harness side connector.
(b) Start the engine, check that the warning light lights up.
If the warning light does not light up, test the bulb or inspect wire
harness.
Page 206 of 1807
N08130
Z07427
Ignition
Switch
BatteryWarning Light
N08958
32
1 270° BE-50
- BODY ELECTRICALCOMBINATION METER
2028 Author: Date:
1997 SUPRA (RM502U)
23. INSPECT DOOR COURTESY SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
ON (SW pin released)1 - 2, 2 - 3Continuity
OFF
(SW pin pushed in)-No continuity
If continuity is not as specified, replace the switch.
24. INSPECT OPEN DOOR WARNING LIGHT
Disconnect the connector from the door courtesy switch,
ground terminal 1 on the wire harness side connector and
check that the warning light lights up.
If the warning light does not light up, inspect the bulb or wire har-
ness.
25. INSPECT LIGHT CONTROL RHEOSTAT
(a) Connect the positive (+) lead from the battery to terminal
1 and negative lead (-) to terminal 3.
(b) Connect the positive (+) lead from the voltmeter to termi-
nal 2 and negative lead to terminal 3.
(c) Turn the rheostat knob and check that the voltage
changes.
Page 207 of 1807
N08953
N08954
BE6219
Junction Block Side
Connector ºAº
- BODY ELECTRICALCOMBINATION METER
BE-51
2029 Author: Date:
1997 SUPRA (RM502U)
26. INSPECT INTEGRATION RELAY OPERATION
(a) Connect the positive (+) lead from the battery to terminals
1 and 7.
(b) Connect the positive (+) lead from the battery to terminal
9 through a 3.4 W test bulb.
(c) Check that the test bulb lights up and buzzer sounds for
4 - 8 seconds when the negative (-) lead from the battery
is connected to terminal 10.
(d) Check that the buzzer sounding in (c) stops when the
negative (-) lead from the battery is connected to terminl
8.
If operation is not as specified, replace the integration relay.
27. INSPECT RELAY CIRCUIT
Remove the relay from the junction block No. 1 and inspect the
connectors on the junction block side.
Tester connectionConditionSpecified condition
4 - GroundDriver's door openContinuity
4 - GroundDriver's door closeNo continuity
5 - GroundIgnition key SetContinuity
5 - GroundIgnition key removeNo continuity
8 - GroundDriver's seat belt fastenContinuity
8 - GroundDriver's seat belt unfastenNo continuity
10 - GroundConstantContinuity
1 - GroundConstantBattery positive voltage
9 - GroundIgnition switch position ONBattery positive voltage
9 - GroundIgnition switch position LOCK or ACCNo Voltage
If circuit is not as specified, tray replacing the relay with a new
one.
Page 208 of 1807
N09537
BE-52
- BODY ELECTRICALCOMBINATION METER
2030 Author: Date:
1997 SUPRA (RM502U)
28. INSPECT BUCKLE SWITCH CONTINUITY
(a) Check that there is continuity between terminals 1 and 2
on the switch side connector with the switch ON (belt fas-
tened).
(b) Check that there is no continuity between terminals 1 and
2 on the switch side connector with the switch OFF (belt
unfastened).
If operation is not as specified, replace the seat belt inner belt.
If the circuit is not as specified, inspect the circuits connected
to other parts.
Page 209 of 1807
Z18234
Tension Reducer Solenoid
Seat Belt Buckle Switch J/B No.1
ECU-IG Fuse
BE0EA-01
- BODY ELECTRICALELECTRIC TENSION REDUCER SYSTEM
BE-53
2031 Author: Date:
1997 SUPRA (RM502U)
ELECTRIC TENSION REDUCER SYSTEM
LOCATION
Page 210 of 1807
BE0EB-01
N08955
25°
2
Returns Slowly1
N08956
25°
Returns Quickly BE-54
- BODY ELECTRICALELECTRIC TENSION REDUCER SYSTEM
2032 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT TENSION REDUCER SOLENOID OPERA-
TION
(a) Connect the positive (+) lead from the battery to terminal
1, and negative (-) lead to terminal 2.
(b) Pull the belt upward and check that the belt is slowly re-
tracted when released.
(c) Disconnect the lead from the battery.
(d) Pull the belt upward and check that the belt is retracted
more quickly when released than in (b).
HINT:
Do not tilt the retractor.
If the operation is not as specified, replace the front seat outer
belt assembly.
2. INSPECT BUCKLE SWITCH CONTINUITY
See page BE-43