1997 TOYOTA SUPRA engine
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BE-6
- BODY ELECTRICALBODY ELECTRICAL SYSTEM
1984 Author: Date:
1997 SUPRA (RM502U)
WIPER AND WASHER SYSTEM
SymptomSuspect AreaSee page
Wipers and washers do not operate.
1. WIPER Fuse (J/B No.1)
2. Ignition Switch
3. Wiper and Washer Switch
4. Wire Harness
BE-13
BE-35
Front wiper does not operate.
1. Front Wiper and Washer Switch
2. Front Wiper Motor
3. Wire HarnessBE-35
BE-35
Rear wiper does not operate.
1. Rear Wiper and Washer Switch
2. Rear Wiper Motor and Relay
3. Wire HarnessBE-35
BE-35
Front washer does not operate.
1. Front Wiper and Washer Switch
2. Washer Motor
3. Wire HarnessBE-35
BE-35
Rear washer does not operate.
1. Rear Wiper and Washer Switch
2. Washer Motor
3. Wire HarnessBE-35
BE-35
COMBINATION METER
METER, GAUGES AND ILLUMINATION:
SymptomSuspect AreaSee page
Tachometer, Fuel Gauge and Engine Coolant Temperature
Gauge do not operate.1. GAUGE Fuse (J/B No.1)
2. Meter Circuit
3. Wire Harness
BE-40
Speedometer does not operate.
1. Vehicle Speed Sensor
2. Meter Circuit
3. Wire HarnessBE-43
BE-40
Tachometer does not operate.
1. Igniter
2. ECM
3. Meter Circuit
4. Wire Harness
DI-1
DI-145
BE-40
Fuel Gauge does not operate or abnormal operation.
1. Fuel Receiver Gauge
2. Fuel Sender Gauge
3. Meter Circuit
4. Wire HarnessBE-43
BE-43
BE-40
Engine Coolant Temperature Gauge does not operate or
abnormal operation.
1. Engine Coolant Temperature Receiver Gauge
2. Engine Coolant Temperature Sender Gauge
3. Meter Circuit
4. Wire HarnessBE-43
BE-43
BE-40
All illumination lights do not light up.
1. TAIL Fuse (J/B No.1)
2. Light Control Rheostat
3. Meter Circuit
4. Wire Harness
BE-43
BE-40
Only one illumination light does not light up.1. Bulb
2. Meter Circuit
BE-40
Page 163 of 1807
- 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
Page 174 of 1807
Z07503
Wire Harness Side
Z09181
34
2 143
12 BE-18
- BODY ELECTRICALHEADLIGHT AND TAILLIGHT SYSTEM
1996 Author: Date:
1997 SUPRA (RM502U)
6. INSPECT DOOR COURTESY SWITCH CONTINUITY
(See page BE-28)
7. CANADA models only:
INSPECT D.R.L. MAIN RELAY CIRCUIT
Disconnect the connector from relay and inspect the connector
on wire harness side, as shown.
Tester connectionConditionSpecified condition
5 - GroundHeadlight dimmer switch position Low beam or
high beamNo continuity
5 - GroundHeadlight dimmer switch position FlashContinuity
8 - GroundParking brake switch position OFFNo continuity
8 - GroundParking brake switch position ONContinuity
16 - GroundHeadlight dimmer switch position Low beamNo continuity
16 - GroundHeadlight dimmer switch position Flash or High
beamContinuity
13 - GroundConstantContinuity
18 - GroundConstantContinuity
2 - GroundIgnition switch position LOCK or ACCNo voltage
2 - GroundIgnition switch position ONBattery positive voltage
11 - GroundEngine StopNo voltage
11 - GroundEngine RunningBattery positive voltage
15 - Ground
17 - GroundConstantBattery positive voltage
If the circuit is as specified, try replacing the relay with a new
one.
If the circuit is not as specified, inspect the circuit connected to
other parts.
8. INSPECT D.R.L. NO.2 RELAY CONTINUITY
ConditionTester connectionSpecified condition
Constant3 - 4Continuity
Apply B+ between
terminals 3 and 4.1 - 2Continuity
If continuity is not as specified, replace the relay.
Page 195 of 1807
Z18230
Brake Fluid Level Warning Switch
Parking Brake Switch
Telltale Light LH
Telltale Light RHVehicle Speed Sensor
Light Failure Sensor
DOME Fuse
Combination Meter
Door Courtesy Switches GAUGE Fuse
ECU-B Fuse
IGN Fuse
PANEL Fuse
TAIL Fuse Integration
Fuel Sender Gauge
: Engine Coolant Temperature Sensor
: Engine Oil Level Sensor
: Low Oil Pressure Warning Switch
: Park/Neutral Position Switch
: Vehicle Speed Sensor 2JZ-GE2JZ-GTE
1
5
4
3
2 Relay R/B No.2
J/B No.1
Meter Circuit
1
1
5 4
3
2 1
2
3
4
5
BE0E7-01
- BODY ELECTRICALCOMBINATION METER
BE-39
2017 Author: Date:
1997 SUPRA (RM502U)
COMBINATION METER
LOCATION
Page 197 of 1807
I02078
Cruise Control Indicator :Fuel Gauge
:Engine Coolant Temperature Gauge
:Tachometer
:Speedometer
D.R.L. :Daytime Running Light
* :Engine Oil Level Delay Circuit
F
E
T
S
F
E
T
S C8
A10
A11
A9
A8
A13
C11
C10
B13
B12
B2
A1
C7
C5
A14
A7
A6
A3
C1
C2
C13
A5P
R
N
D
2
LB4
B10
B6
B7
B8
B11
B1
C9
A16
C4
C6
A15
A2
B3
C12 Fuel Level Warning
MANU Indicator
O/D OFF Indicator
Brake Warning
Bulb Check Relay
TRAC Indicator
Right Turn Indicator
High Beam Indicator
Master Warning
Illumination
SNOW IndicatorLeft Turn Indicator
No. Wire Harness Side
Brake Fluid Level Warning Switch
Parking Brake Switch
USA:TAIL (RH) Fuse, PANEL Fuse
Headlight Dimmer Switch
ECT ECU
Cruise Control ECU
TRAC ECU
Ground (Engine)
Engine Coolant Temperature Sender Gauge
Fuel Sender Gauge
Ground (Signal)
Turn Signal Switch
Starter Relay Generator L Terminal Igniter
Park/Neutral Position Switch (A/T Vehicle) A1
2
3
5
6
7
8
9
10
11
13
14
15
16
BGAUGE Fuse
O/D OFF Switch
USA:TAIL (RH) Fuse, PANEL Fuse
Park/Neutral Position Switch (P)
Park/Neutral Position Switch (N)
ECT ECU
Ground (Power)
Park/Neutral Position Switch (D)
Park/Neutral Position Switch (2)
Park/Neutral Position Switch (L) Park/Neutral Position Switch (R) 1
2
3
6
7
8
10
11
124
13
Engine Oil Level Sensor
Turn Signal Switch
Ground (Power)
Fuel Sender Gauge
GAUGE Fuse
Vehicle Speed Sensor (Terminal 2)
Vehicle Speed Sensor (Terminal 3)
USA:TAIL (RH) Fuse, PANEL Fuse
Light Control Rheostat Telltail Light RH (Terminal 11)
Telltail Light LH (Terminal 1)
Telltail Light LH (Terminal 6) 1
2
6
7
8
10
11
124
135
9 CCANADA:D.R.L. No.3 Relay
Clutch Start Switch (M/T Vehicle)
CANADA:D.R.L. No.3 Relay
CANADA:D.R.L. No.3 Relay
- BODY ELECTRICALCOMBINATION METER
BE-41
2019 Author: Date:
1997 SUPRA (RM502U)
Page 198 of 1807
I02082I02081
I02080
I02079
I05022
Security Indicator
TRAC OFF Indicator
Low Oil Pressure Warning
Engine Oil Level Warning
Malfunction Indicator
ABS Indicator
No.
Combination Meter (Terminal B2)
ECM
ECM
Low Oil Pressure Warning Switch
Combination Meter (Terminal B4)
TRAC ECU, Traction Solenoid Relay
Ground
Theft Deterrent and Door Lock ECUWire Harness Side
1
2
3
4
5
6
8
9
10
No.Wire Harness Side
GAUGE Fuse
ECU-B Fuse
IGN Fuse
PANEL Fuse
Vehicle Speed Sensor (Terminal 3)
Ground
DOME Fuse
Light Control Rheostat
Combination Meter (Terminal B1)
Generator Terminal
Door Courtesy Switch
Integration Relay (Terminal 9)
Light Failure Sensor Center Airbag Sensor 1
2
3
4
5
6
8
107
11
12
14
15
16
18GAUGE Fuse
PPS ECU, Cruise Control ECU, ECM OD/TRIP
Meter
Open Door Warning
Seat Belt Warning
SRS Warning 8
6 5
3
4
110
2 9
7
10
5
14
18
12
16
15
114
6
1
8
3
2Air Conditioning Amplifier Telltale Light LH:
Telltale Light RH:
Rear Light Warning
Discharge Warning BE-42
- BODY ELECTRICALCOMBINATION METER
2020 Author: Date:
1997 SUPRA (RM502U)
2. TELLTALE LIGHT:
Page 199 of 1807
BE1L4-01
N06334
- BODY ELECTRICALCOMBINATION METER
BE-43
2021 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT SPEEDOMETER ON-VEHICLE
Using a speedometer tester, inspect the speedometer for allow-
able indication error and check the operation of the odometer.
HINT:
Tire wear and tire over or under inflation will increase the indica-
tion error.
If error is excessive, replace the speedometer.
USA (mph)CANADA (km/h)
Standard indication Allowable rangeStandard indication Allowable range
20 18 - 24 20 17 - 24
40 38 - 44 40 38 - 46
60 56 - 66 60 57.5 - 67
80 78 - 88 80 77 - 88
100 98 - 110 100 96 - 109
120 118 - 132 120 115 - 130
140 134 - 151.5
160 153 - 173
2. INSPECT VEHICLE SPEED SENSOR OPERATION
(a) Connect the positive (+) lead from battery to terminal 1
and negative (-) lead to terminal 2.
(b) Connect the positive (+) lead from tester to terminal 3 and
negative (-) lead to terminal 2.
(c) Rotate shaft.
(d) Check that there is voltage change from approx. 0 V to 11
V or more between terminals 2 and 3.
HINT:
The voltage change should be 4 times for every revolution of
the speed sensor shaft.
If operation is not as specified, replace the sensor.
3. INSPECT TACHOMETER ON-VEHICLE
(a) Connect a tune-up test tachometer, and start the engine.
NOTICE:
Reversing the connection of the tachometer will damage
the transistors and diodes inside.
(b) Compare the tester and tachometer indications.
If error is excessive, replace the tachometer.
RPM (DC 13.5 V, 25 °C (77°F))
Standard indication (rpm)Allowable range (rpm)
700630 - 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
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.