1997 TOYOTA SUPRA fuel

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.

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.

28 Noise NOISE PRODUCED BY VIBRATION OR SHOCK WHILE DRIVING
No
Ye s Is speaker properly installed?
Noise is produced from static electricity accumulating in the vehicle body. With vehicles stationary lightly tap each system.
Is noise produced?Install properly.
Each system faulty. Is speaker properly installed?
No
No Ye s
Ye s
29 Noise NOISE PRODUCED WHEN ENGINE STARTS
NoYe s Whistling noise which becomes high-pitched when
accelerator strongly depressed, disappears shortly
after engine stops.Generator noise.
A/C noise.
Fuel gauge noise.
Horn noise.
Ignition noise.
Turn signal noise.
Washer noise.
Engine coolant temp. gauge noise.
Wiper noise. Whining noise occurs when A/C is operating.
Scratching noise occurs during sudden acceleration, driving on rough
roads or when ignition switch is turned ON.
Clicking sound is heard when horn button is pressed, then
released. Whirring/grating sound is heard when pushed
continuously.
Murmuring sound stops when engine stops.
Tick-tack noise occurs in co-ordination with blinking
offlasher.
Noise occurs during window washer operation.
Scratching noise occurs while engine is running,
and continues a while even after engine stops.
Scraping noise in line with wiper beat.
Other type of noiseYe s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s
Ye s No
No
No
No
No
No
No
No
- BODY ELECTRICALAUDIO SYSTEM
BE-95
2073 Author
: Date
:
1997 SUPRA (RM502U)

Light Failure Sensor Fuel Pump ECURear Wiper Relay
5. COMPONENTS ADJACENT TO THE BODY PANELS Locations of ECUs (Cont'd)
Many ECUs are mounted in this vehicle.
Take the following precautions during body repair to prevent damage to the ECUs.

Before starting electric welding operations, disconnect the negative (-) terminal cable from the battery.
When the negative (-) terminal cable is disconnected from the battery, memory of the clock and audio
systems will be cancelled. So before starting work, make a record of the contents memorized by each
memory system. Then when work is finished, reset the clock and audio systems as before.
When the vehicle has tilt and telescopic steering, power seat and outside rear view mirror, which are all
equipped with memory function, it is not possible to make a record of the memory contents.
So when the operation is finished, it will be necessary to explain this fact to the customer, and request
the customer to adjust the features and reset the memory.

Do not expose the ECUs to ambient temperatures above 80°C (176°F).
NOTICE: if it is possible the ambient temperature may reach 80°C (176°F) or more, remove the ECUs
from the vehicle before starting work.

Be careful not to drop the ECUs and not to apply physical shocks to them.
Various types of component parts are mounted directly on or adjacently to the body panels.
Strictly observe the following precautions to prevent damaging these components and the body panels
during handling.

Before repairing the body panels, remove their components or apply protective covers over the
components.

Before prying components off using screwdriver or a scraper, etc., attach protective tape to the tool
tip or blade to prevent damaging the components an the body paint.

Before removing components from the outer surface of the body, attach protective tape to the body
to ensure no damage to painted areas.
HINT: Apply touch-up paint to any damaged paint surfaces.

Before drilling or cutting sections, make sure that there are no wires, etc. on the reverse side.
INTRODUCTIONIN-9

GENERAL REPAIR INSTRUCTIONS
Work Precautions
VEHICLE PROTECTION
When welding, protect the
painted surfaces, windows,
seats an carpet with heat-
resistant, fire-proof covers.SAFETY
1. Before performing repair work, check
for fuel leaks. If a leak is found, be
sure to close the opening totally.
2. If it is necessary to use a frame in the
area of the-fuel tank, first remove the
tank and plug the fuel line. SAFETY
Never stand in direct line
with the chain when using
a puller on the body or
frame, and be sure to
attach a safety cable.
WRONG
Glass Cover
Safety Cable
Seat Cover
WRONG
HAND TOOLS
keeping your hand tools
in neat order improve
your work efficiency. SAFETY WORK CLOTHES
In addition to the usual mechanic's wear, cap and safety shoes,
the appropriate gloves, head protector, glasses, ear plugs, face
protector, dust-prevention mask, etc. should be worn as the
situation demands.
Dust-
Prevention
Mask.Welder's
Glasses
Ear
Plugs
Body
Mechanic
Stand Face
Protector
Head
Protector
Eye
Protector
Welder's
Gloves Safety
Shoes
INTRODUCTIONIN-10

Steering Wheel Pad (PUR)
Quarter Wheel Housing Inner Cover (PP)
Rear Combination Lamp (PMMA/PC/PP)
Instrument Panal Passenger
Air Bag (PVC/PUR)
Center Stop Lamp (PMMA/ABS)
Deck Trim Side Board (PP)
Quarter Vent Duct (PP)
Front Fender
Mudguard (PP)
Air Conditioner Unit (PP)
Licence Plate Lamp (PC/PP)
Rear Bumper Cover (PUR) Fuel Filler Opening Lid (PBT)
Rear Side Marker
Lamp (PMMA/ABS)
Fuel Tank Filler
Pipe Protector
(PE)
Back Door Trim Board (PP/PE) Fuel Tank (PE)
Deck Trim Rear Cover (PP/PE)
HINT:
w Resin material differs with model.
/ Made up of 2 or more kinds of materials.
PLASTIC BODY PARTSPP-6

N09214
DLC3 DI-148
- DIAGNOSTICSENGINE (2JZ-GTE)
376 Author
: Date
:
1997 SUPRA (RM502U)
The 2 trip repeats the same mode a 2nd time. (However,
the IG switch must be turned OFF between the 1st trip and
2nd trip).
Freeze frame data:
Freeze frame data records the engine condition when a
misfire (DTC P0300 - P0306) or fuel trim malfunction
(DTC P0171, P0172), or other malfunction (first malfunc-
tion only), is detected.
Because freeze frame data records the engine conditions
(fuel system, calculator load, engine coolant tempera-
ture, fuel trim, engine speed, vehicle speed, etc.) when
the malfunction is detected, when troubleshooting it is
useful for determining whether the vehicle was running or
stopped, the engine warmed up or not, the air-fuel ratio
lean or rich, etc. at the time of the malfunction.
Priorities for Troubleshooting:
If troubleshooting priorities for multiple DTC are given in
the applicable diagnostic chart, these should be followed.
If no instructions are given troubleshoot DTC according
to the following priorities.
(1) DTC other than fuel trim malfunction (DTC P0171,
P0172), EGR (DTC P0401, P0402), and misfire
(DTC P0300 - 0306).
(2) Fuel trim malfunction (DTC P0171, P0172) and
EGR (DTC P0401, P0402).
(3) Misfire (DTC P0300 - P0306).
(b) Check the DLC3.
The vehicle's ECM uses V.P.W. (Variable Pulse Width) for
communication to comply with SAE J1850. The terminal
arrangement of DLC3 complies with SAE J1962 and
matches the V.P.W. format.
Terminal No.Connection / Voltage or ResistanceCondition
2Bus  Line / Pulse generationDuring transmission
4Chassis Ground / e Body Ground 1 W or lessAlways
5Signal Ground / e Body Ground 1 W or lessAlways
16Battery Positive / e Body Ground 9 - 14 VAlways
HINT:
If your display shows ºUNABLE TO CONNECT TO VEHICLEº
when you have connected the cable of the OBD II scan tool or
TOYOTA hand-held tester to DLC3, turned the ignition switch
ON and operated the scan tool, there is a problem on the ve-
hicle side or tool side.

If communication is normal when the tool is connected to
another vehicle, inspect DLC3 on the original vehicle.

If communication is still not possible when the tool is con-
nected to another vehicle, the problem is probably in the
tool itself, so consult the Service Department listed in the
tool's instruction manual.

- DIAGNOSTICSENGINE (2JZ-GTE)
DI-151
379 Author
: Date
:
1997 SUPRA (RM502U)
4. FAIL-SAFE CHART
If any of the following codes is recorded, the ECM enters fail-safe mode.
DTC No.Fail-Safe OperationFail-safe Deactivation Conditions
P0100Fuel cutReturned to normal condition
P0110Intake air temp. is fixed at 20°C (68°F)Returned to normal condition
P0115Engine coolant temp. is fixed at 80°C (176°F)Returned to normal condition
P0120VTA is fixed at 0°
The following condition must be repeated at least 2 times
consecutively
When closed throttle position switch is ON:
0.25 V  VTA1 0.95 V
P0135
P0141The heater circuit in which an abnormality is detected is
turned offIgnition switch OFF
P0325
P0330Max. timing retardationIgnition switch OFF
P0500High RPM fuel cut is prohibited
IAC control prohibitedReturned to normal condition
P1100HAC is fixed at 760 mm HgReturned to normal condition
P1300Fuel cutReturned to normal condition
P1400Sub throttle valve is fixed at almost fully-open position
The following condition must be repeated at least 2 times
consecutively.
When closed subthrottle position switch is ON:
0.25 V  VTA2 0.95 V
P1405Waste gate valve is fixed at open positionReturned to normal condition
P1512Fuel cutPressure intake manifold  1400 mm Hg´abs
P1605Max. timing retardationReturned to normal condition
P1630Does not into the manual patternReturned to normal condition
5. CHECK FOR INTERMITTENT PROBLEMS
TOYOTA hand-held tester only:
By putting the vehicle's ECM in check mode, 1 trip detection logic is possible instead of 2 trip detection logic
and sensitivity to detect open circuits is increased. This makes it easier to detect intermittent problems.
(1) Clear DTC (See page DI-147)
(2) Set check mode (See page DI-147)
(3) Perform a simulation test (See page IN-18)
(4) Connector connection and terminal inspection (See page IN-28)
(5) Visual check and contact pressure check (See page IN-28)
(6) Connector handling (See page IN-28)