TOYOTA SUPRA 1997 Service Repair Manual

Z09225
Washer ON
OFF
INT
LO
HI MISTSLOW (INT)
FAST (INT)
Connector ºBº Connector ºAº
BE0E6-02
N15568
B7
B18B16
N15569
B7
B16
B18B4
INT time control
switch positionVoltage
Approx. 1 - 3 sec.
Battery positive voltage
0 V
Battery positive voltage
0 V Approx. 10 - 15 sec. FAST
SLOW
- BODY ELECTRICALWIPER AND WASHER SYSTEM
BE-35
2013 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT FRONT WIPER AND WASHER SWITCH
CONTINUITY
Switch positionTester connectionSpecified condition
Wiper OFFB4 - B7Continuity
Wiper OFF and MISTB7 - B18Continuity
Wiper INTB4 - B7Continuity
Wiper INT and MISTB7 - B18Continuity
Wiper LOB7 - B18Continuity
Wiper LO and MISTB7 - B18Continuity
Wiper HIB13 - B18Continuity
Wiper HI and MISTB7 - B13
B13 - B18Continuity
Wiper ONB8 - B16Continuity
If continuity is not as specified, replace the switch.
2. INSPECT FRONT WIPER INTERMITTENT OPERA-
TION
(a) Turn the wiper switch to INT position.
(b) Turn the intermittent time control switch to FAST position.
(c) Connect the positive (+) lead from the battery to terminal
B18 and the negative (-) lead to terminal B16.
(d) Connect the positive (+) lead from the voltmeter to termi-
nal B7 and the negative (-) lead to terminal B16, check
that the meter needle indicates battery positive voltage.
(e) After connecting terminal B4 to terminal B18, connect to
terminal it to terminal B16, check the voltage rises from 0
V to battery voltage with in the times, as shown in the
table.
If operation is not as specified, replace the wiper and washer
switch.

N15568
B16
B18 B7
Washer Switch ON
Battery positive voltageLess than 1 sec. OFF
0 V
Approx. 3 sec.
Z09287
OFF INT
Washer ON Washer ON
ON
Connector ºBº Connector ºAº BE-36
- BODY ELECTRICALWIPER AND WASHER SYSTEM
2014 Author
: Date
:
1997 SUPRA (RM502U)
3. INSPECT FRONT WASHER LINKED OPERATION
(a) Connect the positive (+) lead from the battery to terminal
B18 and the negative (-) lead to terminal B16.
(b) Connect the positive (+) lead from the voltmeter to termi-
nal B7 and the negative (-) lead to terminal B16.
(c) Push in the washer switch, check that the voltage
changes, as shown in the table.
If operation is not as specified, replace the wiper and washer
switch.
4. INSPECT REAR WIPER AND WASHER SWITCH CON-
TINUITY
Switch positionTester connectionSpecified condition
Washer 1B2 - B16Continuity
OFF-No continuity
INTB10 - B16Continuity
ONB1 - B16Continuity
Washer 2B1 - B2 - B16Continuity
If continuity is not as specified, replace the switch.

N07801
31
N07802
21
N07803
3
1
N07804
61
5 3
N03983
1 3
- BODY ELECTRICALWIPER AND WASHER SYSTEM
BE-37
2015 Author
: Date
:
1997 SUPRA (RM502U)
5. Low Speed:
INSPECT FRONT WIPER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 3 and
the negative (-) lead to terminal 1, check that the motor oper-
ates at low speed.
If operation is not as specified, replace the motor.
6. High Speed:
INSPECT FRONT WIPER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 2 and
the negative (-) lead to terminal 1, check that the motor oper-
ates at high speed.
If operation is not as specified, replace the motor.
7. Stopping at Stop Position:
INSPECT FRONT WIPER MOTOR OPERATION
(a) Operate the motor at low speed and stop the motor opera-
tion anywhere by disconnecting positive (+) lead from ter-
minal 3.
(b) Connect terminals 3 and 5.
(c) Connect the positive (+) lead from the battery to terminal
6 and negative (-) lead to terminal 1, check that the motor
stops running at the stop position after the motor operates
again.
If operation is not as specified, replace the motor.
8. INSPECT REAR WIPER MOTOR AND RELAY OPERA-
TION
(a) Connect the positive (+) lead from the battery to terminal
1, and the negative (-) lead to terminal 3 and the motor
body, check that the motor operates.

N03984
N03985
BE4118
BE4119
BE-38
- BODY ELECTRICALWIPER AND WASHER SYSTEM
2016 Author
: Date
:
1997 SUPRA (RM502U)
(b) Disconnect the negative (-) lead from terminal 3, check
that the motor stops running at the stop position.
If operation is not as specified, replace the motor and relay.
9. INSPECT INTERMITTENT OPERATION
Connect the positive (+) lead from the battery to terminal 1, and
the negative (-) lead to terminal 2 and the motor body, check
that the motor operates intermittently for 9 - 15 seconds.
If operation is not as specified, replace the motor and relay.
10. Front Washer:
INSPECT WASHER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 2 and
the negative (-) lead to terminal 1, check that the motor oper-
ates.
NOTICE:
These tests must be performed quickly (within 20 seconds)
to prevent the coil from burning out.
If operation is not as specified, replace the motor.
11. Rear Washer:
INSPECT WASHER MOTOR OPERATION
Connect the positive (+) lead from the battery to terminal 2 and
the negative (-) lead to terminal 3, check that the motor oper-
ates.
NOTICE:
These tests must be performed quickly (within 20 seconds)
to prevent the coil from burning out.
If operation is not as specified, replace the motor.

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

BE0E8-01
I02077
Connector ºCº Connector ºBº Connector ºAº
Bulb Check Relay
BE-40
- BODY ELECTRICALCOMBINATION METER
2018 Author
: Date
:
1997 SUPRA (RM502U)
CIRCUIT
1. METER:

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)

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:

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

N08931
N08967
Ignition
Switch
Fuel
Gauge
Battery
Z09321
Fuel Gauge
Battery BE-44
- BODY ELECTRICALCOMBINATION METER
2022 Author
: Date
:
1997 SUPRA (RM502U)
4. INSPECT OD/TRIP METER (in Telltale Light RH)
(a) Remove the telltale light with connector still connected.
(b) Check the continuity and voltage.
Tester connectionConditionSpecified condition
7 - Ground*1ConstantContinuity
1 - Ground*1Ignition Switch ºONº positionBattery positive voltage
4 - Ground*1Light Control Switch ºTAILº or ºHEADº
positionBattery positive voltage
5 - 7*1Ignition Switch ON
Drive the vehicle slowly0V e Battery positive voltage
6 - 7*2Ignition Switch ON
Drive the vehicle slowly0V e more than 5V
8 - Ground*1ConstantBattery positive voltage
10 - Ground*1Ignition Switch ON, Light Control Switch TAIL or
HEAD, Turn the light control rheostat knob to
clockwise
6V " 0V
*1: If continuity or voltage are not as specified, check vehicle
side.
*
2: If voltage is not as specified, replace the telltale light.
5. INSPECT FUEL RECEIVER GAUGE OPERATION
(a) Disconnect the connector from the sender gauge assem-
bly.
(b) Turn the ignition switch ON, check that the receiver gauge
needle indicates EMPTY.
(c) Connect terminals 2 and 3 on the wire harness side con-
nector through a 3.4 W test bulb.
(d) Turn the ignition switch ON, and check that the bulb lights
up and that receiver gauge needle moves toward the full
side.
HINT:
Because of the silicon oil in the gauge, it will take a short time
for the needle to stabilize.
If operation is not as specified, inspect the receiver gauge resis-
tance.