1997 TOYOTA SUPRA wiring

FI1066
IN04C-01
IN-4
- INTRODUCTIONREPAIR INSTRUCTIONS
4 Author
: Date
:
1997 SUPRA (RM502U)
REPAIR INSTRUCTIONS
GENERAL INFORMATION
1. BASIC REPAIR HINT
(a) Use fender, seat and floor covers to keep the vehicle
clean and prevent damage.
(b) During disassembly, keep parts in the appropriate order
to facilitate reassembly.
(c) Observe the following:
(1) Before performing electrical work, disconnect the
negative (-) terminal cable from the battery.
(2) If it is necessary to disconnect the battery for in-
spection or repair, always disconnect the negative
(-) terminal cable which is grounded to the vehicle
body.
(3) To prevent damage to the battery terminal, loosen
the cable nut and raise the cable straight up without
twisting or prying it.
(4) Clean the battery terminals and cable ends with a
clean shop rag. Do not scrape them with a file or oth-
er abrasive objects.
(5) Install the cable ends to the battery terminals with
the nut loose, and tighten the nut after installation.
Do not use a hammer to tap the cable ends onto the
terminals.
(6) Be sure the cover for the positive (+) terminal is
properly in place.
(d) Check hose and wiring connectors to make sure that they
are secure and correct.
(e) Non-reusable parts
(1) Always replace cotter pins, gaskets, O-rings and oil
seals etc. with new ones.
(2) Non-reusable parts are indicated in the component
illustrations by the ºº symbol.
(f) Precoated parts
Precoated parts are bolts and nuts, etc. that are coated
with a seal lock adhesive at the factory.
(1) If a precoated part is retightened, loosened or
caused to move in any way, it must be recoated with
the specified adhesive.
(2) When reusing precoated parts, clean off the old
adhesive and dry with compressed air. Then apply
the specified seal lock adhesive to the bolt, nut or
threads.
(3) Precoated parts are indicated in the component il-
lustrations by the º
º symbol.
(g) When necessary, use a sealer on gaskets to prevent
leaks.

B02572
TRAC OFF
Indicator Light
TRAC Cut
Switch
N19405
- INTRODUCTIONFOR ALL OF VEHICLES
IN-15
15 Author
: Date
:
1997 SUPRA (RM502U)
(c) Install the antenna feeder at least 20 cm (7.87 in.) away from the ECU and sensors of the vehicle's
electronics systems. For details about ECU and sensors locations, refer to the section on the applica-
ble component.
(d) Do not wind the antenna feeder together with the other wiring. As much as possible, also avoid running
the antenna feeder parallel with other wire harnesses.
(e) Confirm that the antenna and feeder are correctly adjusted.
(f) Do not install powerful mobile communications system.
4. FOR USING OBDII SCAN TOOL OR TOYOTA HAND-HELD TESTER
Observe the following for safety reasons:

Before using the OBDII scan tool or TOYOTA hand-held tester, the OBDII scan tool's instruction
book or TOYOTA hand-held tester's operator manual should be read thoroughly.

Be sure to route all cables securely when driving with the OBDII scan tool or TOYOTA hand-held
tester connected to the vehicle. (i.e. Keep cables away from feet, pedals, steering wheel and shift
lever.)

Two persons are required when test driving with the OBDII scan tool or TOYOTA hand-held tes-
ter, one person to drive the vehicle and one person to operate the OBDII scan tool or TOYOTA
hand-held tester.
5. FOR VEHICLES EQUIPPED WITH TRACTION CON-
TROL (TRAC) SYSTEM
When using a 2 wheel drum tester such as a speedometer tes-
ter or chassis dynamometer, etc., or jacking up the rear wheels
and driving the wheels, always push in the TRAC cut (ºTRAC
OFFº) switch and turn the TRAC system OFF.
(a) Confirm TRAC system is OFF
(1) Press the TRAC cut (ºTRAC OFFº) switch.
(2) Check that the TRAC OFF indicator light comes on
when the TRAC system is turned off by the TRAC
cut switch.
HINT:
The TRAC OFF indicator light should always operate right after
the engine is restarted.
(3) Begin measurements.

V08423 Knock Sensor 1
GRECM
KNK
E1 12
E6
WIRING DIAGRAM
DTC P0325Knock Sensor 1 Circuit Malfunction
CIRCUIT DESCRIPTION
Knock sensor is fitted to the cylinder block to detect engine knocking. This sensor contains a piezoelectric element which
generates a voltage when it becomes deformed, which occurs when the cylinder block vibrates due to knocking. If engine
knocking occurs, ignition timing is retarded to suppress it.
DTC No. DTC Detecting Condition Trouble Area
P0325No knock sensor 1 signal to ECM with engine speed,
1,200 rpm or more.
Open or short in knock sensor1 circuit

Knock sensor 1 (looseness)

ECM
If the ECM detects the above diagnosis conditions, it operates the fall safe function in which the corrective retard angle
value is set to the maximum value.

Diagnostic Trouble Code No. and Detection Item

Circuit Description
The major role and operation, etc. of the circuit
and its component parts are explained.

Indicates the diagnostic trouble code, diagnostic
trouble code set parameter and suspect area of
the problem.

Wiring Diagram
This shows a wring diagram of the circuit.
Use the diagram together with ELECTRICAL
WIRING DIAGRAM to thoroughly understand the
circuit.
Wiring colors are indicated by an alphabetical code.
B = Black, L = Blue, R = Red, BR = Brown,
LG = Light Green, V = Violet, G = Green,
O = Orange, W = White, GR = Gray, P = Pink,
Y = Yellow
The first letter indicates the basic wire color and
the second letter indicates the color of the stripe. IN-26
- INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
26 Author
: Date
:
1997 SUPRA (RM502U)
6. CIRCUIT INSPECTION
How to read and use each page is shown below.

31 SUPRAÐNEW FEATURES
Wiring Diagram

H01987
N08465
N09351
N11635
BO-56
- BODYINSTRUMENT PANEL
2136 Author
: Date
:
1997 SUPRA (RM502U)
5. REMOVE FRONT PASSENGER AIRBAG ASSEMBLY
(a) Remove the 2 bolts from instrument panel.
Torque: 8.5 N´m (87 kgf´cm, 75 in.´lbf)
(b) Remove the 2 bolts from instrument panel reinforcement.
Torque: 20 N´m (204 kgf´cm, 15 ft´lbf)
(c) Remove the front passenger airbag assembly.
CAUTION:

Do not store the front passenger airbag assembly
with the airbag door facing down.

Never disassemble the front passenger airbag as-
sembly.
NOTICE:
At the time of installation, please refer to the following
items.

Make sure the front passenger airbag assembly is
installed to the specified torque.

Take care that the wirings do not interfere with other
parts and not pinched between other parts.
6. REMOVE THESE PARTS:
(a) Parking brake lever (2 bolts)
Torque: 59 N´m (600 kgf´cm, 43 ft´lbf)
(b) Side defroster No.2 nozzle
(c) Steering column (4 nuts)
Torque: 25 N´m (260 kgf´cm, 19 ft´lbf)
7. REMOVE INSTRUMENT PANEL
(a) Disconnect the connectors.
(b) Remove the nut, screw, 8 bolts and instrument panel.
Torque: 8.8 N´m (90 kgf´cm, 78 ft´lbf)
8. REMOVE INSTRUMENT PANEL REINFORCEMENT
(a) Remove the bolt, 2 nuts and instrument panel No.1 brace.
Torque: 21 N´m (210 kgf´cm, 15 ft´lbf)
(b) Remove the 6 bolts, 4 nuts and instrument panel rein-
forcement.
(c) Remove the bolt, 2 nuts and instrument panel side No.3
bracket.

Manual Name
Pub. No.
(USA and CANADA)

SUPRA Repair Manual

Supra Electrical Wiring Diagram
Manual

1/2 SUPRA New Car Features
(Models except USA and CANADA)

SUPRA Chassis and Body Repair Manual

Supra Electrical Wiring Diagram
Manual

SUPRA New Car Features
(All Countries)

Fundamental Painting Procedures

Fundamental Body Repair ProceduresBRM024E
BRM002E NCF097E RM344E
EWD175Y NCF096U M/Y Version
M/Y Version
FOREWORD
This repair manual has been prepared to provide information on
the repair methods (including cutting and welding operations, but
excluding painting) for collision-damaged body components of the
TOYOTA SUPRA.
Applicable models: JZA80 series
This manual consists of body repair methods, exploded diagrams
and illustrations of the body components and other information re-
lating to body panel replacement such as handling precautions,
etc. However, it should be noted that the front fenders of the
TOYOTA models are bolted on and require no welding.
Body construction will sometimes differ depending on specifica-
tions and country of destination. Therefore, please keep in mind
that the information contained herein is based on vehicles for gen-
eral destinations.
For the repair procedures and specifications other than collisionda-
maged body components of the TOYOTA SUPRA refer to the fol-
lowing repair manuals.
If you require the above manuals, please contact your TOYOTA
Dealer.
All information contained in this manual is the most up-to-date at
the time of publication. However, specifications and procedures are
subject to change without prior notice.
TOYOTA MOTOR CORPORATION

FOR THE TOYOTA DEALER
COLLISION REPAIR INFORMATION
TITLE: SRS AIRBAG COMPONENT REPLACEMENT PAGE 1 of 6
SECTION: ELECTRICAL BULLETIN #79
MODELS: ALL
DATE: AUGUST 1997
After an airbag has been deployed during a collision, it will be necessary to replace certain
components of the airbag system. Technicians can identify these parts by using the
attached matrix.
If the airbag does not deploy, yet the combination meter (airbag warning light) stays on for
more that 10 seconds after the key is turned to the ªACCº or ªONº position, it is necessary
to perform a diagnostic test. Always refer to the Toyota repair manual for the correct repair
procedure.
The attached information includes:

A matrix indicating components requiring replacement (pages 2±4).

Parts replacement note (page 5).

An example repair manual page outlining the diagnostic procedure available in
each model specific repair manual (page 6).
Toyota recommends the use of electrical repair kit (P/N 00002±04200±01) for any wiring
repairs. This kit includes a selection of numerous repair connectors, terminal ends, a repair
procedures manual and special tools specific to Toyota. The
replacement electrical wire
and connector (from the wire harness to the front sensors) is P/N 82988±24010.
Toyota also offers a video package which shows the operation of the SRS airbag system
(P/N 00401±42994).
CAUTION: SRS Airbag service work can be performed only AFTER 90 SECONDS
from the time the ignition switch is turned to the ªlockº position and the
negative (±) terminal cable is disconnected from the battery.
NOTE: PLEASE ROUTE THIS BULLETIN TO YOUR COLLISION REPAIR CENTER
MANAGER!

FOR THE TOYOTA DEALER
COLLISION REPAIR INFORMATION
TITLE: SRS AIRBAG COMPONENT REPLACEMENT PAGE 1 of 6
SECTION: ELECTRICAL BULLETIN #79
MODELS: ALL
DATE: AUGUST 1997
After an airbag has been deployed during a collision, it will be necessary to replace certain
components of the airbag system. Technicians can identify these parts by using the
attached matrix.
If the airbag does not deploy, yet the combination meter (airbag warning light) stays on for
more that 10 seconds after the key is turned to the ªACCº or ªONº position, it is necessary
to perform a diagnostic test. Always refer to the Toyota repair manual for the correct repair
procedure.
The attached information includes:

A matrix indicating components requiring replacement (pages 2±4).

Parts replacement note (page 5).

An example repair manual page outlining the diagnostic procedure available in
each model specific repair manual (page 6).
Toyota recommends the use of electrical repair kit (P/N 00002±04200±01) for any wiring
repairs. This kit includes a selection of numerous repair connectors, terminal ends, a repair
procedures manual and special tools specific to Toyota. The
replacement electrical wire
and connector (from the wire harness to the front sensors) is P/N 82988±24010.
Toyota also offers a video package which shows the operation of the SRS airbag system
(P/N 00401±42994).
CAUTION: SRS Airbag service work can be performed only AFTER 90 SECONDS
from the time the ignition switch is turned to the ªlockº position and the
negative (±) terminal cable is disconnected from the battery.
NOTE: PLEASE ROUTE THIS BULLETIN TO YOUR COLLISION REPAIR CENTER
MANAGER!