1997 TOYOTA SUPRA automatic transmission

N02541DLC2
IN0247
N08868
2JZ-GE Engine
DLC1
N08869
2JZ-GTE Engine
DLC1
- INTRODUCTIONREPAIR INSTRUCTIONS
IN-7
7 Author
: Date
:
1997 SUPRA (RM502U)
2. FOR VEHICLE WITH DATA LINK CONNECTOR 2
(DLC2)
(a) The DLC2 is provided inside the cabin (located under the
left side of instrument panel) as a connector exclusively
for diagnosis of data from the engine, automatic transmis-
sion, ABS, A/C, Airbag, Traction Control and Cruise Con-
trol System to improve serviceability.
(b) The DLC1 inside the engine compartment is used for en-
gine adjustment.
(c) Connecting the following terminals of the DLC2 to termi-
nal E
1 selects the diagnosis mode shown in the table.
NOTICE:
Pay enough attention to the terminal connection position
as this will cause a malfunction.
TerminalSystem
TE1Engine and automatic transmission (Normal mode)
TE2 and TE1Engine and automatic transmission (Test mode)
TCABS, A/C, Airbag, Traction Control and Cruise Control
System
TTAutomatic transmission
(d) Refer to the respective system for the inspection method.
HINT:
By connecting the DLC2 up to a monitor specifically designed
for use with the DLC2, the diagnosis result for each system can
be read easily.

IN04F-02
- INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMSIN-17
17 Author
: Date
:
1997 SUPRA (RM502U)
HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
GENERAL INFORMATION
A large number of ECU controlled systems are used in the TOYOTA SUPRA. In general, the ECU controlled
system is considered to be a very intricate system requiring a high level of technical knowledge and expert
skill to troubleshoot. However, the fact is that if you proceed to inspect the circuits one by one, troubleshoot-
ing of these systems is not complex. If you have adequate understanding of the system and a basic knowl-
edge of electricity, accurate diagnosis and necessary repair can be performed to locate and fix the problem.
This manual is designed through emphasis of the above standpoint to help service technicians perform ac-
curate and effective troubleshooting, and is compiled for the following major ECU controlled systems:
SystemPage
1. Engine (2JZ-GE)DI-1
2. Engine (2JZ-GTE)DI-145
3. Automatic Transmission (2JZ-GE)DI-316
4. Automatic Transmission (2JZ-GTE)DI-371
5. Anti-Lock Brake SystemDI-440
6. ABS & Traction control SystemDI-499
7. Supplemental Restraint SystemDI-555
8. Theft Deterrent SystemDI-608
9. Cruise Control SystemDI-660
11. Air Conditioning SystemDI-71 1
The troubleshooting procedure and how to make use of it are described on the above pages.
FOR USING OBDII SCAN TOOL OR TOYOTA HAND-HELD TESTER

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.

If the OBDII scan tool or TOYOTA hand-held tester cannot communicate with ECU controlled systems
when you have connected the cable of the OBDII 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 vehicle side or tool
side.
(1) If communication is normal when the tool is connected to another vehicle, inspect the diagnosis
data link line (Bus
line) or ECU power circuit of the vehicle.
(2) If communication is still not possible when the tool is connected to another vehicle, the problem
is probably in the tool itself, so perform the Self Test procedures outlined in the Tester Operator's
Manual.

DIAGNOSTIC TROUBLE CODE CHECK PROCEDURE
Diagnostic Trouble
Code Check (Make a
note of and then clear)Confirmation
of SymptomsDiagnostic Trouble
Code CheckProblem Condition
Diagnostic Trouble
Code DisplayProblem symptoms
existSame diagnostic
trouble code is
displayedProblem is still occurring in the diagnostic
circuit.
Normal code is
displayedThe problem is still occurring in a place
other than in the diagnostic circuit.
(The diagnostic trouble code displayed
first is either for a past problem or it is a
secondary problem.)
No problem
symptoms existThe problem occurred in the diagnostic
circuit in the past.
Normal Code DisplayProblem symptoms
existNormal code is
displayedThe problem is still occurring in a place
other than in the diagnostic circuit.
No problem
symptoms existNormal code is
displayedThe problem occurred in a place other
than in the diagnostic circuit in the past.
IN-20- INTRODUCTIONHOW TO TROUBLESHOOT ECU CONTROLLED
SYSTEMS
20 Author
: Date
:
1997 SUPRA (RM502U)
2. SYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE CHECK
The diagnostic system in the TOYOTA SUPRA fulfills various functions. The first function is the Diagnostic
Trouble Code Check in which a malfunction in the signal circuits to the ECU is stored in code in the ECU
memory at the time of occurrence, to be output by the technician during troubleshooting. Another function
is the Input Signal Check which checks if the signals from various switches are sent to the ECU correctly.
By using these check functions, the problem areas can be narrowed down quickly and troubleshooting can
be performed effectively. Diagnostic functions are incorporated in the following systems in the TOYOTA SU-
PRA.
SystemDiagnostic Trouble
Code CheckInput Signal Check
(Sensor Check)Other Diagnosis
Function
Engine
Automatic Transmission
Anti-Lock Brake System
ABS & Traction Control System
Supplemental Restraint System
Cruise Control
Air Conditioning (with Check
Mode)
 (with Check
Mode)









Diagnostic Test
Mode
Diagnostic Test
Mode
Actuator Check
In diagnostic trouble code check, it is very important to determine whether the problem indicated by the diag-
nostic trouble code is still occurring or occurred in the past but returned to normal at present. In addition,
it must be checked in the problem symptom check whether the malfunction indicated by the diagnostic
trouble code is directly related to the problem symptom or not. For this reason, the diagnostic trouble codes
should be checked before and after the symptom confirmation to determine the current conditions, as shown
in the table below. If this is not done, it may, depending on the case, result in unnecessary troubleshooting
for normally operating systems, thus making it more difficult to locate the problem, or in repairs not pertinent
to the problem. Therefore, always follow the procedure in correct order and perform the diagnostic trouble
code check.

IN04I-01
- INTRODUCTIONTERMS
IN-33
33 Author
: Date
:
1997 SUPRA (RM502U)
TERMS
ABBREVIATIONS USED IN THIS MANUAL
AbbreviationsMeaning
ABSAnti-Lock Brake System
ALRAutomatic Locking Retractor
APPROX.Approximately
A/T, ATMAutomatic Transmission
AT FAutomatic Transmission Fluid
BTDCBefore Top Dead Center
CBCircuit Breaker
CDCompact Disc
CRSChild Restraint System
DOHCDouble Over Head Cam
DPDash Pot
ECUElectronic Control Unit
ELREmergency Locking Retractor
ESAElectronic Spark Advance
EXExhaust (Manifold, Valve)
FIPGFormed in Place Gasket
FLFusible Link
FrFront
H-FuseHigh Current Fuse
IGIgnition
INIntake (Manifold, Valve)
J/BJunction Block
LEDLight Emitting Diode
LHLeft-Hand
LLCLong Life Coolant (Year Around Coolant)
LSDLimited Slip Differential
Max.Maximum
Min.Minimum
MPMultipurpose
M/TManual Transmission
O/D, ODOverdrive
O/SOversize
P&BVProportioning and Bypass Valve
PCVPositive Crankcase Ventilation
PPSProgressive Power Steering
PSPower Steering
RHRight-Hand
RrRear
SRSSupplemental Restraint System
SSMSpecial Service Materials
SSTSpecial Service Tools
STDStandard

26SUPRAÐNEW FEATURES
 DIFFERENTIAL
1. General
A differential gear ratio has been changed on the 2JZ±GE engine model.
A Helical gear type torque±sensing LSD (Limited Slip Differential) is available as an option on the SJZ±GE engine
model and 2JZ±GTE engine with automatic transmission model.
As in the '96 model, a worm gear type torque±sensing LSD is used on the model with the SJZ±GTE engine and
manual transmission.

Specifications
Model
'97 Model '96 Model
Engine Type2JZ±GE2JZ±GTE2JZ±GE2JZ±GTE
Transmission TypeManualAutomaticManualAutomaticManualAutomaticManualAutomaticItemManualAutomaticManualAutomaticManualAutomaticManualAutomatic
Differential Gear Ratio 4.803u3.1333.7694.272u3.1333.769
No. ofDrive Pinion12u151311u1513No. of
TeethRing Gear49u474947u4749
Ring Gear Size
mm (in.)205
(8.07)
u222
(8.74)205
(8.07)uu222
(8.74)205
(8.07)
No. of Differential
Pinion 2,8*1,
3u6*2 2,8*1,
3 2,6*2,
3u6*2u
*1 : Models with Helical Gear Type Torque±Sensing LSD
*
2 : Models with Worm Gear Type Torque±Sensing LSD
*
3 : Option
2. Helical Gear Type Torque±Sensing LSD
Characteristics
Good traction of high bias ratio design is obtained through the utilization of two types of friction: One is the friction
that is generated between the planet gear's tooth tips and the differential case's inner wall. The other is the friction
that is generated between the side gear end face and the thrust washer.
Quick response and minimum time lag until differential limiting force is generated.
The bias ratio sustains minimal changes due to aging and maintains a stable performance.
A simple, compact, and lightweight differential configuration has been achieved through the use of the helical gear.
Ordinary differential oil must be used; do not use special LSD oil.

24
:New :Discontinued SUPRAÐMODEL CODE & MODEL LINE±UP
MODEL CODE
JZA80 L ± A J M V F A



BASIC MODEL CODE
JZA80 : With 2JZ±GE Engine or
2JZ±GTE Engine
STEERING WHEEL POSITIONL : Left±Hand Drive
MODEL NAMEA : Supra
BODY TYPE
L : Liftback
J : Liftback with Sport Roof
GEARSHIFT TYPE
F : 6±Speed Manual, Floor
M : 5±Speed Manual, Floor
P : 4±Speed Automatic, Floor
GRADEV : Ð
ENGINE SPECIFICATION
F : SFI and DOHC
Z : SFI and DOHC with Turbocharger
DESTINATION
A : U.S.A..
K : Canada
MODEL LINE±UP
TRANSAXLE5±Speed
Manual6±Speed
Manual 4±Speed Automatic
DESTI±ROOFGRADEENGINEW58V160A340EA340E*NATIONROOFGRADEENGINEW58V160A340EA340E*
Standard
2JZ GE
JZA80L±
ALMVFAJZA80L±
ALPVFA
USA
SportÐ
2JZ±GEJZA80L±
AJMVFAJZA80L±
AJPVFA
U.S.A..
Standard
2JZ±GTE
JZA80L±
ALFVZAJZA80L±
ALPVZA
Sport
2JZ±GTEJZA80L±
AJFVZAJZA80L±
AJPVZA
CanadaSportÐ2JZ±GTEJZA80L±
AJFVZKJZA80L±
AJPVZK
* : Electronically Controlled Transmission with and intelligent sporty control

22SUPRAÐOUTLINE OF NEW FEATURES
SUPRA
OUTLINE NEW FEATURES
The Supra, which represents Toyota's advanced automotive technology, has earned a reputation as a truly luxurious
sports car. The following changes have been made for the 1997 model year.
1. Model Line±Up

The JZA80L±ALPVZA model has been discontinued.

The JZA80L±ALFVZA and JZA80L±AJFVZA models have been added.
2. Exterior Design

The multi±reflector type headlights are adopted.

The design of the turn signal light, front bumper and rear combination light has been changed.
3. Interior Equipment
The front seats have been changed from the separate±headrest type seats of the '96 model to the integrated headrest
type seats without changing their basic design.
4. 2JZ±GTE Engine
An aluminum radiator core is adopted for weight reduction.
5. Differential

A differential gear ratio has been changed on he 2JZ±GE engine model.

A helical gear type torque±sensing LSD is available as an option on the 2JZ±GE engine model and 2JZ±GTE engine
with automatic transmission model.
6. Drive Shaft
An outboard joint of drive shaft has been changed from cross±groove type CVJ (Constant±Velocity Joint) to Rzeppa
type CVJ on the 2JZ±GE engine model.
7. Brakes

A master cylinder diameter has been changed on the 2JZ±GTE engine model.

An ABS has been changed to the 2±position solenoid valve type actuator.

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.