1995 TOYOTA SUPRA Service Repair Manual

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Page 649 of 2543

TOYOTA SUPRA 1995 Service Repair Manual TACHOMETER INSPECTION
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 d

Page 650 of 2543

TOYOTA SUPRA 1995 Service Repair Manual OD TRIP METER INSPECTION
INSPECT OD/TRIP METER (in Telltale Light RH)
(a) Remove the telltale light with connector still connected.
(b) Check the continuity and voltage.

OD TRIP METER INSPECTION
INSPECT OD/TRIP METER (in Telltale Light RH)
(a) Remove the telltale light with connector still connected.
(b) Check the continuity and voltage.

Tester connection to
terminal number
Condition

Specified condition

7±Ground*1
Constant

Continuity
1±Ground*1 Ignition Switch ºONº position Battery positive voltage

4±Ground*1

Light Control Switch ºTAILº or ºHEADº
position
Battery positive voltage

5±7*1

Ignition Switch ON
Drive the vehicle slowly
0V e Battery positive voltage

6±7*2
Ignition Switch ON
Drive the vehicle slowly
0V e more than 5V
8±Ground*1 Constant Battery positive voltage

10±Ground*1

Ignition 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.
FUEL GAUGE INSPECTION
1. INSPECT RECEIVER GAUGE OPERATION
(a) Disconnect the connector from the sender gauge assembly.
(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
connector through a 3.4 W test bulb.
(d) Turn the ignition switch ON, check that the bulb lights up and
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 re-
sistance. BE±48
± BODY ELECTRICAL SYSTEMCOMBINATION METER

Page 651 of 2543

TOYOTA SUPRA 1995 Service Repair Manual 2. INSECT RECEIVER GAUGE RESISTANCE
Measure the resistance between terminals.
Between terminals Resistance ()
A±B

Page 652 of 2543

TOYOTA SUPRA 1995 Service Repair Manual ENGINE COOLANT TEMPERATURE
GAUGE INSPECTION
1. INSPECT RECEIVER GAUGE OPERATION
(a) Disconnect the connector from the sender gauge.
(b) Turn the ignition switch ON, check that the receiver gauge
ne

Page 653 of 2543

TOYOTA SUPRA 1995 Service Repair Manual LOW OIL PRESSURE WARNING
INSPECTION
1. INSPECT SWITCH
(a) Check that there is continuity between terminal and ground
with the engine stopped.
(b) Check that there is no continuity between terminal a

Page 654 of 2543

TOYOTA SUPRA 1995 Service Repair Manual BRAKE FLUID LEVEL WARNING
INSPECTION
1. INSPECT SWITCH
(a) Remove the reservoir tank cap and strainer.
(b) Disconnect the connector.
(c) Check that there is no continuity between terminals with the

Page 655 of 2543

TOYOTA SUPRA 1995 Service Repair Manual LIGHT FAILURE SENSOR INSPECTION
1. INSPECT SENSOR CIRCUIT
Disconnect the connector from the sensor and inspect the
connector on the wire harness side, as shown.

LIGHT FAILURE SENSOR INSPECTION
1. INSPECT SENSOR CIRCUIT
Disconnect the connector from the sensor and inspect the
connector on the wire harness side, as shown.

Tester connection to
terminal number

Condition

Specified condition
1±Ground Constant Continuity*
2±Ground Constant Continuity*
9±Ground Constant Continuity*
10±Ground

Constant

Continuity*
11±Ground Constant Continuity
12±Ground Constant Continuity*
3±Ground Light control switch position OFF No Voltage 3±Ground Light control switch position TAIL or HEAD Battery positive voltage
4±Ground

Ignition switch position LOCK or ACC

No voltage
4±Ground Ignition switch position ON Battery positive voltage
7±Ground Stop light switch position OFF No voltage
7±Ground Stop light switch position ON Battery positive voltage
8±Ground

Engine condition Stop

No voltage
8±Ground Engine condition Running Battery positive voltage
*: There is 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.
2. INSPECT 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.
± BODY ELECTRICAL SYSTEMCOMBINATION METERBE±53

Page 656 of 2543

TOYOTA SUPRA 1995 Service Repair Manual OPEN DOOR WARNING INSPECTION
1. INSPECT DOOR COURTESY SWITCH

Switch Position

Tester connection to
terminal number
Spe

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