Page 375 of 1807

Front Fender Area
Before repairing the body, remove the SRS parts if, during repair, shocks are likely to be applied to
the sensors due to vibrations of the body or direct tapping with tools or other parts.
Do not expose the SRS parts directly to hot air or flames.
NOTICE:
1) The maximum ambient temperature tolerance is 120
°C (248°F) for the front airbag sensor,
105
°C (221°F) for the center airbag sensor assembly and 93°C (200°F) for the steering wheel
pad, and front passenger airbag assembly. If it is possible that the ambient temperature may
reach or exceed the temperature limit, remove the sensors and the steering wheel pad from
the vihicle or protect them with a hot insulation material before starting work.
2) Prior to welding, remove adjacent SRS parts from the vehicle or protect there with fire-proof
covers.
If the front fender or periphery of the vehicle is damaged, visually inspect for damage to the front
airbag sensor using the inspection procedures described in section RS of the repair manual for the
relevant model year.
Also check that the dimensions of the body where the front airbag sensor is installed match those
in the body dimension drawings.
(The airbag may malfunction, or may not work, if the mounting angle or dimensions of the sensor
mount are not correct.)
If the vehicle is damaged, visually inspect for damage to the steering wheel pad using the inspection
procedures described in section RS of the repair manual for the relevant model year.
When removing or handling the steering wheel pad, and front passenger airbag assembly keep the
pad upper surface facing upward. Also, lock the lock lever of the twin lock type connector at the rear
of the pad and take care not to damage the connector.
(Storing the pad or front passenger airbag assembly with its metalic surface up may lead to a serious
accident if the airbag inflates for some reason.)
Store the steering wheel pad and the front passenger airbag assembly where the ambient tempera-
ture remains below 93°C (200°F), without high humidity and away from electrical noise.
Be careful not to let painting materials contact the SRS parts.
Information labels are attached to the periphery of the SRS components. Follow the NOTICES.
Store the airbag assembly where the ambient temperature remains below 93°C (200°F), without high
humidity and away from electrical noise.
INTRODUCTIONIN-7
Page 384 of 1807
ABS Antilock Brake System
A/C Air Conditioner
assy assembly
ECT Electronic Controlled Transmission
ECU Electronic Control Unit
e.g. Exempli Gratia (for Example)
Ex. Except
FWD Front Wheel Drive Vehicles
4WD Four Wheel Drive Vehicles
in. inch
LH Left-hand
LHD Left-hand Drive
MIG Metal Inert Gas
M/Y Model Year
PPS Progressive Power Steering
RH Right-hand
RHD Right-hand Drive
SRS Supplemental Restraint System
w/ with
w/o without
ABBREVIATIONS USED IN THIS MANUAL
For convenience, the following abbreviations are used in this
manual.
INTRODUCTIONIN-16
Page 446 of 1807
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
Page 491 of 1807

SRS AIRBAG COMPONENT REPLACEMENT (cont'd) PAGE 5 of 6
Component Replacement Notes
Note 1 ± Replace the following items:
Instrument panel
Center console bracket support
Note 2 ± Replace the following items if deformed:
Instrument panel
Instrument panel reinforcement
Glove compartment
Glove compartment door
Note 3 ± Replace the following items:
Instrument panel reinforcement
Glove compartment
Glove compartment door
Note 3a ± Replace the following items:
Instrument panel
Instrument panel reinforcement
Glove compartment door
Note 4 ± If the SRS wire harness assembly is damaged:
Use a repair wire specially designed for use in the SRS airbag system at the front
sensor (P/N 82988±24010).
OR
Replace the entire wire harness assembly.
Note 4a ± Replace wire harness if damaged.
Repair only if wire harness connector is damaged.
Note 4b ± Replace wire harness if damaged.
Note 5 ± Replace the following items if deformed:
Steering wheel
Spiral cable
Note 6 ± Replace center airbag sensor assembly if:
Center airbag sensor assembly has been found faulty in troubleshooting
Center airbag sensor assembly has been found faulty during the following checks:
1. Deformation of the bracket or case
2. Vinyl seal broken
3. Damage to connector
Center airbag sensor assembly has been dropped.
Page 496 of 1807

SRS COMPONENT REPLACEMENT (cont'd) PAGE 4 of 4
Component Replacement Notes
Note 1 ± Visually inspect and replace the following items if deformed:
Instrument panel and center console bracket support
Note 2 ± Visually inspect and replace the following items if deformed:
Instrument panel and Instrument panel reinforcement
Glove compartment and glove compartment door
Note 2a ± Same as note 2 without involving the glove compartment.
Note 3 ± If the SRS wire harness is damaged only at the connectors to the front
sensors:
Use a repair wire specially designed for use in the SRS airbag system at the front sensor
(PN 82988±24010/50010/33010).
OR
Replace the entire wire harness assembly.
Note 3a ± Replace the entire wire harness if damaged or has been found to be faulty
during troubleshooting.
Note 4 ± Replace the following items if deformed or if diagnostic tests show a fault:
Steering wheel (If the horn button contact plate has been deformed, never attempt to
repair it±always replace the steering wheel).
Spiral cable
Note 5 ± Replace center airbag sensor assembly if:
Center airbag sensor assembly has been found faulty in troubleshooting.
Center airbag sensor assembly shows evidence of the following:
1. Deformation of the bracket or case
2. Vinyl seal broken
3. Damage to connector
Center airbag sensor assembly has been dropped.
Note 6 ± Replace side impact sensors and side airbag assembly with seat cover if
deployed. Side airbag circuits are independent from each other, and one
side may deploy while the other does not.
Note 7 ± 1998 Tacoma is equipped with a passenger airbag cutoff switch. If the
switch is ªOFFº when impact occurs, replace the switch. If the switch is in
the ªONº position when impact occurs, and the passenger airbag deploys,
check the switch as directed by the Repair Manual.
Page 501 of 1807

SRS AIRBAG COMPONENT REPLACEMENT (cont'd) PAGE 5 of 6
Component Replacement Notes
Note 1 ± Replace the following items:
Instrument panel
Center console bracket support
Note 2 ± Replace the following items if deformed:
Instrument panel
Instrument panel reinforcement
Glove compartment
Glove compartment door
Note 3 ± Replace the following items:
Instrument panel reinforcement
Glove compartment
Glove compartment door
Note 3a ± Replace the following items:
Instrument panel
Instrument panel reinforcement
Glove compartment door
Note 4 ± If the SRS wire harness assembly is damaged:
Use a repair wire specially designed for use in the SRS airbag system at the front
sensor (P/N 82988±24010).
OR
Replace the entire wire harness assembly.
Note 4a ± Replace wire harness if damaged.
Repair only if wire harness connector is damaged.
Note 4b ± Replace wire harness if damaged.
Note 5 ± Replace the following items if deformed:
Steering wheel
Spiral cable
Note 6 ± Replace center airbag sensor assembly if:
Center airbag sensor assembly has been found faulty in troubleshooting
Center airbag sensor assembly has been found faulty during the following checks:
1. Deformation of the bracket or case
2. Vinyl seal broken
3. Damage to connector
Center airbag sensor assembly has been dropped.
Page 652 of 1807

A00714
ONCheck Harness A
ECM
A2 SP1(+)
AT7809
4.5 - 5.5 V
0Turn the wheel
- DIAGNOSTICSENGINE (2JZ-GTE)
DI-239
467 Author: Date:
1997 SUPRA (RM502U)
INSPECTION PROCEDURE
1 Check operation of speedometer.
CHECK:
Drive the vehicle and check if the operation of the speedometer in the combination meter is normal.
HINT:
The No.1 vehicle speed sensor is operating normally if the speedometer display is normal.
NG Check speedometer circuit (See page BE-43).
OK
2 Check voltage between terminal SP1 of ECM connector and body ground.
PREPARATION:
(a) Shift the shift lever to neutral position.
(b) Jack up one of rear wheels.
(c) Connect Check Harness A (See page DI-164).
(d) Disconnect power steering ECU connector and cruise
control ECU connector.
(e) Turn ignition switch ON.
CHECK:
Measure voltage between terminal SP1 of ECM connector and
body ground when rear wheel is turned slowly.
OK:
Voltage is generated intermittently.
NG Check and repair harness and connector be-
tween combination meter and ECM.
OK
Check and replace ECM (See page IN-28).
Page 850 of 1807

AB0130AB0045AB0046
W03146W03147
W01805
H09720
Connector (1)
Airbag Sensor
AssemblyFront Passenger
Airbag Assembly
No.1 J/B Spiral CableSteering Wheel
Pad (Squib) Connector (2)
Connector (3)
Connector (5)Connector (4)
Aibag Sensor Assembly Connector [Connector (1)]
Short SpringBefore Release After Release
Spiral Cable Connector [Connector (5)]
Short Spring Before Release
PaperAfter Release
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-559
787 Author: Date:
1997 SUPRA (RM502U)
5. RELEASE METHOD OF AIRBAG ACTIVATION PREVENTION MECHANISM
An airbag activation prevention mechanism is built into the connecter for the squib circuit of the SRS.
When release of the airbag activation prevention mechanism is directed in the troubleshooting procedure,
as shown in the illustration of the connectors (1) and 839 below, insert paper which is the same thickness
as the male terminal, between the terminal and the short spring.
CAUTION:
NEVER RELEASE the airbag activation prevention mechanism on the steering wheel pad con-
nector.
NOTICE:
Do not release the airbag activation prevention mechanism unless specifically directed by the
troubleshooting procedure.
If the paper inserted is too thick the terminal and short spring may be damaged, so always use
paper the same thickness as the male terminal.