1997 TOYOTA SUPRA warning lights

36SUPRAÐNEW FEATURES
3) ABS ECU
a. Wheel Speed Control
The ECU constantly receives signals form the 4±speed sensors and a deceleration sensor (2JZ±GTE engine model),
and estimates the speed and deceleration rate of the vehicle by calculating the speed and deceleration rate of each
wheel.
b. Initial Check
An initial check is carried out every time once after the engine has started and the initial vehicle speed exceeds 6 km/h
(4 mph).
c. Self±Diagnosis
If the ABS ECU detects a malfunction in the ABS, the ABS warning light and a master warning lights in the
combination meter will light up and alert the driver that a malfunction has occurred. The ECU will also store the codes
of the malfunctions.
 SUSPENSION
1. General
The shock absorber of the 2JZ±GTE engine model with manual transmission has been changed from the
mono±tube, gas±filled shock absorber to the twin±tube, gas±filled shock absorber, which is the same type that is
used on the 2JZ±GE engine model.
The same rubber±integrated ball bushing that is used on the 2JZ±GTE engine model is used for the upper arm
bushing of the rear suspension of the 2JZ±GE engine model.
The brace rod of the rear subframe has been relocated to realize excellent riding comfort, in addition, this provides
excellent stability, an controllability.

- BODY ELECTRICALBODY ELECTRICAL SYSTEM
BE-7
1985 Author
: Date
:
1997 SUPRA (RM502U)
WARNING LIGHTS:
SymptomSuspect AreaSee page
Warning lights do not light up.
(Except Discharge and Door Open)
1. Bulb
2. IGN Fuse (J/B No.1)
3. Ignition Switch
4. Meter Circuit
5. Generator
6. Wire Harness
BE-13
BE-40
Brake Warning Light does not light up.
1. Bulb
2. Brake Fluid Level Warning Switch
3. Parking Brake Switch
4. Bulb Check Relay
5. Meter Circuit
6. Wire Harness
BE-43
BE-43
BE-40
Seat Belt Warning Light does not light up.
1. Bulb
2. Seat Belt Buckle Switch
3. Integration Relay
4. Meter Circuit
5. Wire Harness
BE-43
BE-13
BE-40
Engine Oil Level Warning Light does not light up.
1. Bulb
2. Engine Oil Level Warning Switch
3. Meter Circuit
4. Wire Harness
BE-43
BE-40
Low Oil Pressure Warning Light does not light up.
1. Bulb
2. Low Oil Pressure Warning Switch
3. Meter Circuit
BE-43
BE-40
Door Open Warning Light does not light up.
1. Bulb
2. DOME Fuse (R/B No.2)
3. Door Courtesy Switch
4. Luggage Room Light Switch
5. Integration Relay
6. Meter Circuit
7. Wire Harness
BE-28
BE-28
BE-13
BE-40
Master Warning Light does not light up.
1. Bulb
2. Telltale Light Circuit
3. Meter Circuit
4. Wire Harness
BE-40
BE-40
INDICATOR LIGHTS:
SymptomSuspect AreaSee page
SRS Indicator Light does not light up.
1. Bulb
2. Center Airbag Sensor
3. Wire Harness
DI-555
ABS Indicator Light does not light up.
1. Bulb
2. Traction ECU
3. Wire Harness
DI-499
Malfunction Indicator Light does not light up.
1. Bulb
2. ECM
3. Wire Harness
DI-1
DI-145
TRAC OFF Indicator Light does not light up.
1. Bulb
2. Traction Solenoid Relay
3. Traction ECU
4. Wire Harness
DI-499
DI-499

Z18224
Front Turn Signal and Hazard Waning Lights
HAZ-HORN Fuse Combination Switch
Light Control Switch
Turn Signal Flasher R/B No.4
J/B No.1
TURN Fuse
Rear Combination Lights
Rear Turn Signal and hazard Warning Lights R/B No.2







BE0DX-01
- BODY ELECTRICALTURN SIGNAL AND HAZARD WARNING SYSTEM
BE-25
2003 Author
: Date
:
1997 SUPRA (RM502U)
TURN SIGNAL AND HAZARD WARNING SYSTEM
LOCATION

BE0DY-02
Z09367
Right Turn
Left Turn
Connector ºAº
BE1843
2
Turn Signal Light Bulbs (21W)13
Z09334
BE-26
- BODY ELECTRICALTURN SIGNAL AND HAZARD WARNING SYSTEM
2004 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT TURN SIGNAL SWITCH CONTINUITY
Switch positionTester connectionSpecified condition
Left turnA1 - A5Continuity
Neutral-No continuity
Right turnA1 - A8Continuity
If continuity is not as specified, replace the switch.
2. INSPECT TURN SIGNAL FLASHER OPERATION
(a) Connect the terminal 2 to battery positive (+) terminal and
the terminal 3 to battery negative (-) terminal.
(b) Connect the 2 turn signal light bulbs parallel to each other
to terminals 1 and 3, check that the bulbs flash.
HINT:
The turn signal lights should flash between 60 and 120 times
per minute.
3. INSPECT HAZARD WARNING SWITCH CONTINUITY
ConditionTester connectionSpecified condition
Switch OFF7 - 10Continuity
Switch ON7 - 8
4 - 5 - 6 - 9Continuity
Illumination circuit2 - 3Continuity
If continuity is not as specified, replace the switch.
BE3QR-01

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.

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.

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.

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.