1997 TOYOTA SUPRA steering

AB0119AB0234H07975
ON
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-597
825 Author
: Date
:
1997 SUPRA (RM502U)
3 Does SRS warning light turn off ?
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Connect the steering wheel pad connector.
(c) Connect the front passenger airbag assembly connector.
(d) Connect the airbag sensor assembly connector.
(e) Turn the ignition switch ON.
CHECK:
Operate electric system checked in (defogger, wiper, headlight,
heater blower, etc.) and check that SRS warning light goes off.
NO Check for DTCs. If a DTC is output, trouble-
shooting for the DTC. If a normal code is output,
replace airbag sensor assembly.
YES
From the results of the above inspection, the malfunctioning part can now be considered normal.
To make sure of this, use the simulation method to check.

AB0117R05902
H07976
LOCK
P squib
Spiral
CableAirbag Sensor
Assembly
D squib
AB0117
W02765H00044
LOCK
Airbag Sensor Assembly
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
DI-599
827 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION PROCEDURES
1 Preparation.
PREPARATION:
(a) Disconnect negative (-) terminal cable from the battery,
and wait at least 90 seconds.
(b) Remove the steering wheel pad (See SR Section).
(c) Disconnect the connector of front passenger airbag as-
sembly (See page RS-21).
CAUTION:
Store the steering wheel pad with the front surface facing
upward.
2 Does SRS warning light turn off?
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least 90 seconds.
(c) Disconnect the airbag sensor assembly connector.
(d) Connect negative (-) terminal cable to battery.
CHECK:
Check operation of SRS warning light.
NG Check SRS warning light circuit or terminal AB
circuit of DLC1.
OK
Replace airbag sensor assembly.

AB0117 AB0118 AB0119W02763
H00049
LOCK
Airbag Sensor Assembly
TcACC
ON
or
DI-606
- DIAGNOSTICSSUPPLEMENTAL RESTRAINT SYSTEM
834 Author
: Date
:
1997 SUPRA (RM502U)
4 Check airbag sensor assembly.
PREPARATION:
(a) Turn the ignition switch to LOCK.
(b) Disconnect negative (-) terminal cable from the battery,
and wait at least 90 seconds.
(c) Remove the steering wheel pad. (See SR section)
(d) Disconnect the connector of front passenger airbag as-
sembly. (See page RS-21)
(e) Disconnect the connector of airbag sensor assembly.
(See page RS-33)
(f) Insert the service wire into terminal Tc from back side as
shown.
(g) Connect the airbag sensor assembly connector with ser-
vice wire.
(h) Connect negative (-) terminal cable to battery.
(i) Turn the ignition switch to ACC or ON, and wait at least
20 seconds.
(j) Connect the service wire of terminal Tc to body ground.
CHECK:
Check operation of SRS warning light.
OK:
SRS warning light comes on.
NOTICE:
Never make a mistake with the terminal connection posi-
tion as this will cause a malfunction.
OK Check harness between airbag sensor assem-
bly and DLC1.
NG
Replace airbag sensor assembly.

Input SignalIndicator Light
Blinking Pattern
SET/COAST
switch
RESUME/ACCEL
switch
CANCEL switch2 Pulses
ON
OFF
ON
OFF3 Pulses
ON
OFFSW OFF
SW ON
N16045
3 4
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-683
911 Author
: Date
:
1997 SUPRA (RM502U)
INSPECTION PROCEDURE
1 Input signal check.
PREPARATION:
See input signal check on page DI-662.
CHECK:
Check the indicator light operation when each of the SET/
COAST, RESUME/ACCEL and CANCEL is turned on.
OK:
SET/COAST, RESUME/ACCEL switch
The signals shown in the table on the left should be
output when each switch is ON. The signal should
disappear when the switch is turned OFF.
CANCEL switch
The indicator light goes off when the cancel switch is
turned on.
OK Wait and see.
NG
2 Check control switch.
PREPARATION:
(a) Remove steering wheel center pad (See page SR-1 1).
(b) Disconnect control switch connector.
CHECK:
Measure resistance between terminals 3 and 4 of control switch
connector when control switch is operated.
Switch positionResistance (W)
Neutral8 (No continuity)
RES/ACC50 - 80
SET/COAST180 - 220
CANCEL400 - 440
OK Repair control switch.
NG

N15969
3
5
- DIAGNOSTICSCRUISE CONTROL SYSTEM
DI-705
933 Author
: Date
:
1997 SUPRA (RM502U)
2 Check main switch continuity.
PREPARATION:
(a) Remove steering wheel center pad (See page SR-1 1).
(b) Disconnect cruise control switch connector.
CHECK:
Check continuity between terminals 3 and 5 of cruise control
switch connector when main switch is held on and off.
OK:
Switch positionTester connectionSpecified condition
OFF3 - 5No continuity
Hold ON3 - 5Continuity
NG Replace control switch.
OK
3 Check harness and connector between cruise control ECU and main switch
(See page IN-28).
NG Repair or replace harness or connector.
OK
Check and replace cruise control ECU
(See page IN-28).

16
ABBREVIATIONS D
ABBREVIATIONS
The follow abbreviations are used in this manual.
ABS = Anti-Lock Brake Systerm O/D = Overdrive
A/C = Air Conditioning PPS = Progressive Power Steering
ACIS = Acoustic Control Induction System R/B = Relay Block
A/T = Automatic Transmission RH = Right-Hand
COMB. = Combination SFI = Sequential Multiport Fuel Injection
ECU. = Electronic Control Unit SRS = Supplemental Restraint System
EGR = Exhaust Gas Recirculation SW = Switch
ESA = Electronic Spark Advance TEMP. = Temperature
EVAP = Evaporative Emission TRAC = Traction Control
J/B = Junction Block VSV = Vacuum Switching Valve
LH = Left-Hand w/ = With
M/T = Manual Transmission w/o = Without
* The titles given inside the components are the names of the terminals (terminal codes) and are not treated
as being abbreviations.

27
G
Position of Parts in Engine Compartment
[2JZ-GE]
O 2 Oil Pressure SW
P 1 PPS Solenoid
P 2 Park/Neutral Position SW, Back-Up Light SW and
A/T Indicator Light SW (A/T)
P 3 Power Steering Pressure SW
P13 Parking Light LH
S 2 Starter
S 3 Starter
T 1 Theft Deterrent Horn
T 2 Throttle Position Sensor
V 1 VSV (ACIS)
V 2 VSV (EGR)
V 3 VSV (EVAP)
V 6 VSV (Fuel Pressure Up)
V10 Vehicle Speed Sensor No.1 (Combination Meter)
V11 Vehicle Speed Sensor No.2 (Electronically
Controlled Transmission)
W 1 Washer Motor H 1 Headlight Hi LH
H 2 Headlight Hi RH
H 3 Headlight Lo LH
H 4 Headlight Lo RH
H 8 Horn LH
H 9 Horn RH
I 1 Idle Air Control Valve
I 4 Igniter
I 5 Ignition Coil
I 12 Injector No.1
I 13 Injector No.2
I 14 Injector No.3
I 15 Injector No.4
I 16 Injector No.5
I 17 Injector No.6
K 1 Knock Sensor (on Front Side)
K 2 Knock Sensor (on Rear Side)
M 1 Mass Air Flow Meter
M 2 Main Heated Oxygen Sensor (Bank 1 Sensor 1)
M 3 Main Heated Oxygen Sensor (Bank 2 Sensor 1)
N 1 Noise Filter

28
G ELECTRICAL WIRING ROUTING
Position of Parts in Instrument Panel
B 5 Blower Motor Control Relay
B 6 Buckle SW LH
B 7 Buckle SW RH
C 6 Cigarette Lighter
C 7 Cigarette Lighter Illumination
C 8 Clock
C 9 Clutch Start SW
C10 Combination Meter
C11 Combination Meter
C12 Combination Meter
C13 Combination SW
C14 Combination SW
C15 Cruise Control Clutch SW
C16 Cruise Control ECU
D 5 Data Link Connector 2
D 6 Daytime Running Light Relay (Main)
D 7 Diode (Interior Light)
D 8 Diode (Idle-Up)
D17 Data Link Connector 3 A12 A/C Amplifier
A13 A/C Amplifier
A14 A/C Amplifier
A15 A/C Evaporator Temp. Sensor
A16 A/C Room Temp. Sensor
A17 A/C Solar Sensor
A18 ABS ECU
A19 ABS ECU
A20 ABS ECU
A21 ABS ECU
A23 ABS Deceleration Sensor
A24 Air Inlet Control Servo Motor
A25 Air Mix Control Servo Motor
A26 Air Vent Mode Control Servo Motor
A27 Airbag Squib (Steering Wheel Pad)
A28 Airbag Squib (Front Passenger Airbag Assembly)
A29 Ashtray Illumination
A30 Auto Antenna Control Relay
A34 Airbag Sensor
B 3 Blower Motor
B 4 Blower Motor Control Relay