1997 TOYOTA SUPRA engine

5
678
26 SUPRA(
Cont' d)
11B 4B 14A 9B 13A 16A 6A 2A 3A 15A 6B 1C 4C 10C 6C 7C 8C 11C 12B 13B
3C 13 C 7B 12 C 2C 5A 1A 10B1B2B 5B 8A 9A 8B 10A 11A13 IF2
33 II1 24 II1 19 II1
5 BP1 3 B P1 1 B P 1
2 1
IF1
EB IH 14 IB2 1IE1 2IE1 3 IE115 I F1 29 I I1
EC
See Illumination
Sy stem< 8- 4>
See Turn Signal
and Haza rd War ning
Light Sys tem< 9- 3>
See Headlight
Sys tem< 5- 3> < 6- 4>
See Cr uise Co ntrol
Sys te m< 17- 2>To Rheostat< 8- 4> L
2
D
N
R
P
MA NU
O/D OFF
TURN RH
TURN LH
HIGH B EAM
SN OW
CRUISE
BRAKE
SPE EDFUEL FUEL TACHO MA ST ER
Fr om Engine Cont rol Mo dule
<3- 7>Fro m Ignite r< 2- 4>
DELAYBUL B
CHE CK
REL AY
E 7
ENGINE OIL
L EV EL SEN SOR
E 4
EN GI NE COO LANT
TEMP. SENDERF14
F UEL SEND ER
From Daytime Running
Light Relay(
Main)
<6- 1>P 5
P ARKING BRAK E
SWJ 1
JUNCTION
CO NNECT OR
B 2
BR AKE FL UID LE VEL
WARNIN G SW
BR- WW- B
BR - W
B B- W
B- W(
*2)
B- WW- B W- B
W- B R- W(
*1)
BR - W(
*2)
R- W
BR- W
B- W
BRBR
G BR Y- R Y- GY- BBR BR
Y- B
Y- G Y- GY- BBR
Y- L(
*1)
Y- R(
*2)
GBRBR
R- GR- Y
L- R L- W Y- GY
B- W Y
L- W
L- R
R
R- G
R- YB- W(
Ca nada)
B- W(Ca nada)
BR- WBR - W B- W( Canada)
BR- W
BR- WDIODE
(* 2) (
USA * 1)
(USA)
(
Can ada)
(
Canada)(
US A) (
US A) (
*1)
112
ILLUMINATION
*1 : 2JZ- GTE
*2 : 2JZ- GE
WATER
TEMP .
A A 123 COMB IN ATI O N ME TER C10 B , C1 1 C , C1 2 A
Front side of
intake manifoldLeft kic k pa ne lRight kick pa nel Front side of
le ft fender
G- O
A
1
2 4 4
Combination M eter
A
B
C
D
E
F
To G e ne r a t o r
<1- 4
B- W(
*1)
From A/C Amplifier
<27- 5>
From Dayt ime Running
Lig ht Rela y(
Mai n)
<6- 2>
SLI P
7A
See Tra ction Cont rol
System< 20- 2>
See Electronically Controlled
Transmission and A/T Indicator
System <15-6><16-6>
From Park/Neutral Position
SW (A/T) <1-3>
From Clutch Start SW (M/T)
<1-3>
See Electronically Controlled
Transmission and A/T Indicator
System <15-6><16-6>
K

1
234
27 SUPRA(
Cont. next page)
2ACC
IG1 AM13
4
6 1
5 2
3
2 1
3 5
4
2 1
5 33 4
1 2
1 2
M
1 2
M
1 2 1E 13 1J4
22 2222 2 2 1B 21B4
222 221A 51K2 1J 5
10 I F1
1IB4
3IB2
3IK12EA1
5IF1
2A
EB IG EB2B 1B 1A 3A 2A
1 2
M1IK1 2IK110 II 1 EA11
4IG116
IG113
IG115
IG114 M
IF313 BA TTERY
12 0A AL T 60A POWER 5 0A AM1 (US A)
6 0A AM1(
Ca na da)30A FAN 50A HTR HEATER
REL AY A/ C MAGNE TIC
CLUTC H REL AYE 5
ENG IN E COOLA NT
TEMP. SW R 1
RADIA TOR
FAN MOTOR NO. 1R2 0
RA DI ATOR FAN
MOTOR NO. 2
BLOWER MOTOR
C ONTROL REL AY
B 3
BLOWE R MOTOR
10 A ECU- B R 3
RAD IA TOR FAN
RELA Y NO. 2
I1 9
IG NI TI O N SW7. 5 A
HTR
R 2
RAD IA TOR FAN
REL AY NO. 1
To Engine Con tro l Mod ule
<3- 8><4- 8>
A 4
A/C MAGN ETI C
CLUTCH
W- RW
W- LW W- RB B R- L R- L R- L B- YLR-LL- B L- B
W- B W- B
W- B
L L
L- RL- W L- W
L- R W- GL
R- L R- L W- BL- R
R- L W- R(
2JZ- GTE) R- L(
2JZ- GTE)
BBR BR W- BLL
W- B L W- B W- B
W- B
L- WL
L
L- W
L
L R- LW- B
W- B
L- B W- R(
2JZ- GTE)
R- L(
2JZ- GTE) G
B- Y
R- LR- L
G- R
G
GR G RG G- RR- LG W- R
R- L R- L
FRE SH RECIRC A24
A IR INLE T CONTROL
SERVO MOTOR
L
L- W
L
W- BW- B L- R W- G
(
2JZ- GTE)
R- L
(
2JZ- GTE)
22 2
2
2
111
112
5
3
4
A /C AMPLIF IE R
1 234 567
8 9 10 11 12 13 14 15 16 17 1 8A O RANG E
4
12 13 14 15 16 123 5678
9 1011 17181920B O RANG E 1
234 5678
9
10 11 12
1
3 2ABLACK
1
2 BBLACKAORANGE
BLOWER MOTOR
C ONTROL REL AYHEATE R CON TR OL SW
13 14 1 5 16 17 1 8 1920
12 3 45
6 7 8 9 10 11 12 13 14BORANGE
B+B
M+ M- G ND SI 1
Fr ont si de of
left fenderRigh t k ick pa nel12345 67 89
10 11 12 13 14 15 16 17 18 19 20 21 2 2C O RANG E A12
A13
A14
B 4
B 5A /C DUAL PRES SURE S W
1
23
4
12A A 3 B L A C K
B A 3 GR AY
B 4 A , B 5 B
H12
H13 22
2
W
WW- B
F ront s ide of
left f enderEAFront s ide of
right fender
W- B
Radiator Fan and Automatic Air Conditioning Power Source
3A
2A
A 3 A
A/C S IN GLE
PRESS URE SW
A
B
C
D
E
F
G
H
I
W- B L- B1 2
M
A 2
A/ C COND ENSE R
FA N MOTOR
L- B
K OVERALL ELECTRICAL WIRING DIAGRAM

5
678
27 SUPRA(
Cont' d)
1J 8
1E 2
6 IF3 6 I G1 1 IG1 7 IG1 11 IG1 3 IG1 8 IG 1 2 IG1 9 I G1 7 IF3
20 II11 2
1 2
2 1
5IG1 3IB6 1 2
1 213 B 9B 2A 17 A 5A 6A 22 C 9A 3A 1A 18 A 7A 16 A9A 10 A 2A 11 A 7B 2B 13 A 9B 10 B 1B 16 A 12 A 17 A 14 A 4A 3A 15 A 7A 11 B 12 B 4B 3B
8C 9C 10 B1A 6 A 18 A 5 A 6 B
6B 21 C 14 A 15 B 16 B 7C 17B 20B 19B 20C 7B 11A 18B 8B 16C 4C 10C 11C 1C 2C 6C 17C 18C 19C 12C 15C 14C 3C 13C 1B 4B 3B 2B 8A 10A 4A 11B
IH IG 1426 II1
11 IB6
EAM 12 IB631 II 1
8IF3
To Engine Contr ol Module
<3- 7><4- 8>
To T achomet er
[Comb. Meter]< 26- 5>
A /C DUA L
PRESSURE SW
A2 6
AI R VENT MODE
CON TROL SERV O MOTO R
E11
E NGINE C OOL ANT TEMP . SE NSOR
(
A/ C S y s te m) A15
A/C E VAPORATOR
TEMP . S ENS OR A 4
A /C LO CK SE NSOR
[ A/C MAGNE TIC CLU TCH]A 1
A/ C A MBI ENT
TEMP . SENS OR A16
A/ C RO OM
TEMP . SENS OR A17
A/C S OLAR SE NS OR
A25
A IR MIX CONTR OL
SERVO MOTOR
J 1
J UNCTION
CONNECTOR TSET
VE R1 GND S5 SW1 SW2
TS SW3
TR SW4
TA MSW5 SW6
LOCK- INSW7
SGL- L O L- M1 L- M2
AMH AMC TP TEL- M3 L- HI
L- A/C L- F RS
L- REC L- MAUTO
L- FACE
TW AOD AOF TPOL- B/L
L- FOOT L- F/D
L- DEF L- RDEF IG RDEFGR S PEED +B ACC AI R
AIF AI M/ AM OU T
A/C- IN HR BLW PSW IGN MGC15A
CIG
Fr om Odo and Trip Me ter
[Telltale Light RH]
< 26- 1> From Rea r Window Def og ger
Relay< 21- 1> HE ATER CONTROL SW
RR-
DEFOGDEF F/D FOOT B/L FACE AUTOREC/
FRSA /C FA ND- FAN D+ OFF
WARM COOL
M
DE F FAC E COOL WARM
A 5 4 5 4312 312
AA
L- Y L- Y L- Y
L
L- W
LW- B L- R LGW Y- L LG- RL- Y G- WR- YVV
R- Y
G- W
L- Y
LG- R
Y- L
W
LGBR- WV- W
V- W
V- W
V- W
BR- W
B- W L- RL- W L- W L- W L- W G
G- Y
L- W G- Y [G GR- RY- G BR - WW- B W-B W-B W-B W-B
L- W BR - W
BR - WBR - W W- B
BR- W
L- B
L- W
P- B
Y- B
L- R
G- W
R- W
W- L
LG - R
R
P- B
B- W
P
LG
B
GR
LG- B
R- B
G
BR- W
Y
BR
R- Y
V
R- L
O
P
W- R
L- R
GR
W- R
G
R- L
G- R
G
R- L R- L
V- W V - W V- W V- W
BR- W BR- W V- W L L- W
L- W L- W L- WL- WBR- W
V- W(
*1)
L- W(
*2) L- WW- B
G
R- L
L H1 2 A , H13 B
A/C AMP LI FIER A12C, A13A, A14B
Fr ont side of
r igh t fender4A 2B 1A
1B(
*2) (
*1) (
*2) (
*1)
A 3 A , B
Rig ht kick panel* 1 : 2 JZ - G T E
* 2 : 2 JZ - G E
2 1
Radiator Fan and Automatic A ir Conditioning
A
B
C
D
E
F
G
H
I
K

EC042-01
- EMISSION CONTROL (2JZ-GTE)EMISSION CONTROL SYSTEM
EC-1
1238 Author
: Date
:
1997 SUPRA (RM502U)
EMISSION CONTROL SYSTEM
PURPOSE
The emission control systems are installed to reduce the amount of CO, HC and NOx exhausted from the
engine ((3), (4) and (5)), to prevent the atmospheric release of blow-by gas-containing HC (1) and evapo-
rated fuel containing HC being released from the fuel tank (2).
The function of each system is shown in these table.
SystemAbbreviationFunction
(1) Positive Crankcase Ventilation
(2) Evaporative Emission Control
(3) Exhaust Gas Recirculation
(4) Three-Way Catalytic Converter
(5) Sequential Multiport Fuel Injection *PCV
EVAP
EGR
TWC
SFIReduces HC
Reduces evaporated HC
Reduces NOx
Reduces CO, HC and NOx
Injects a precisely timed, optimum amount of fuel for reduced
exhaust emissions
Remark: * For inspection and repair of the SFI system, refer to the SFI section this manual.

S02980
FilterCap
S02981
Vacuum Gauge
EC047-02
- EMISSION CONTROL (2JZ-GTE)EXHAUST GAS RECIRCULATION (EGR) SYSTEM
EC-7
1244 Author
: Date
:
1997 SUPRA (RM502U)
EXHAUST GAS RECIRCULATION
(EGR) SYSTEM
INSPECTION
1. CHECK AND CLEAN FILTER IN EGR VACUUM
MODULATOR
(a) Remove the cap and 2 filters.
(b) Check the filter for contamination or damage.
(c) Using compressed air, clean the filter.
(d) Reinstall the 2 filters and cap.
HINT:
Install the filter with the coarser surface facing the atmospheric
side (outward).
2. INSTALL VACUUM GAUGE
Using a 3-way connector, connect a vacuum gauge to the hose
between the EGR valve and EGR vacuum modulator.
3. INSPECT SEATING OF EGR VALVE
Start the engine and check that the engine starts and runs at
idle.
4. INSPECT VSV OPERATION WITH COLD ENGINE
(a) M/T
The coolant temperature should be below 50°C (122°F).
(1) Start the engine and check idling.
(2) When idling with the lever shifting in the N position,
press accelerator pedal slowly to hold the engine
speed at 1,600 - 1,800 rpm.
(3) Check that the vacuum gauge indicates zero.
(b) A/T
The coolant temperature should be below 65°C (149°F).
(1) Chock the 4 wheels.
(2) Fully apply the parking brake.
(3) Connect a tachometer to the engine.
(4) Start the engine and check idle.
(5) Keep your foot pressed firmly on the brake pedal.
(6) Shift into the D position. Press the accelerator pedal
slowly to hold the engine speed at 1,600 - 1,800
rpm.
(7) Check that the vacuum gauge indicates zero.
5. INSPECT VSV OPERATION WITH HOT ENGINE
(a) M/T
Warm up the engine. The coolant temperature in 50°C
(122°F) or more.
(1) When idling with the lever shifting in the N position,
press accelerator pedal slowly to hold the engine
speed at 1,600 - 1,800 rpm.
(2) Check that the vacuum gauge indicates low vacu-
um momentarily.

S02982
To Intake
Manifold
S02983
Engine Stopped
Air PQ
S02984
Engine at
3,500 rpm
Air PQ EC-8
- EMISSION CONTROL (2JZ-GTE)EXHAUST GAS RECIRCULATION (EGR) SYSTEM
1245 Author
: Date
:
1997 SUPRA (RM502U)
(b) A/T
Warm up the engine. The coolant temperature in 65°C
(149°F) or more.
(1) Chock the 4 wheels.
(2) Fully apply the parking brake.
(3) Connect a tachometer to the engine.
(4) Start the engine and check idling.
(5) Keep your foot pressed firmly on the brake pedal.
(6) Shifting into the D position. Press the accelerator
pedal slowly to hold the engine speed at 1,600 -
1,800 rpm.
(7) Check that the vacuum gauge indicates low vacu-
um.
6. REMOVE VACUUM GAUGE
Remove the vacuum gauge, and reconnect the vacuum hoses
to their proper locations.
7. INSPECT EGR VALVE
(a) Apply vacuum directly to the EGR valve with the engine
idling.
(b) Check that the engine runs rough or dies.
(c) Reconnect the vacuum hoses to their proper locations.
If no problem is found during this inspection, system is normal;
otherwise inspect each part.
8. INSPECT VSV FOR EGR
(See page SF-69)
9. DISCONNECT VACUUM HOSES FROM EGR VACUUM
MODULATOR
Disconnect the 2 vacuum hoses from ports P and Q of the EGR
vacuum modulator.
10. INSPECT EGR VACUUM MODULATOR OPERATION
(a) Block port P with your finger.
(b) Blow air into port Q, and check that air passes through to
the air filter side freely.
(c) Start the engine, and maintain speed at 3,500 rpm.
(d) Repeat the above test. Check that there is a strong resis-
tance to air flow.
11. RECONNECT VACUUM HOSES TO EGR VACUUM
MODULATOR
Reconnect the 2 vacuum hoses to the proper locations.

EM0AC-02
S00586
Drive Belt Tensioner
Drive Belt
Tensioner Damper
M/T
Air Cleaner Duct
Oil Filler Cap
No.3 Timing
Belt Cover
Gasket
No.2 Timing Belt Cover
No.5 Air Hose
Water Pump
Pulley
Drive BeltCamshaft Timing Pulley
Drive Belt TensionerHold-Down
Clamp
Idler PulleyBattery
Insulator
Battery TrayBattery
Timing Belt
Gasket
No.1 Timing Belt Cover
Crankshaft Pulley
Upper Radiator Support
Crankshaft Timing Pulley
No.2 Air Tube Electric Cooling
Fan Connector
ECT Switch
Connector Lower
Radiator
Support

Timing Belt Tensioner PS Pump Pulley
Lower Radiator Hose
Timing Belt Guide
Timing Belt Plate
x 5
Radiator Assembly
Reservoir Inlet Hose
No.2 Fan Shroud
x 16Engine Under Cover
Hose Clamp
Oil Cooler Tube
A/T
x 10
Fan and Fluid Coupling Assembly

precoated part  Non - reusable part
EM-14
- ENGINE MECHANICAL (2JZ-GTE)TIMING BELT
111 9 Author
: Date
:
1997 SUPRA (RM502U)
TIMING BELT
COMPONENTS

EM0AG-02
Z13597
Air Cleaner and
MAF Meter AssemblyNo.1 Air Hose
Engine Wire Protector
Air Cleaner Duct
Theft Deterrent Horn
Drive Belt
No.5 Air Hose
Hose Clamp
Oil Cooler Tube (A/T)
Hose Clamp
Front Lower Arm
Bracket Stay
Upper Crossmember
Extension
Engine Under CoverNo.2 Front Exhaust PipeHeat Insulator
Pipe Support BracketEVAP Hose
Brake Booster
Vacuum Hose
Tube Clamp

Gasket



Gasket
x 16

Non-reusable part
- ENGINE MECHANICAL (2JZ-GTE)CYLINDER HEAD
EM-25
1130 Author
: Date
:
1997 SUPRA (RM502U)
CYLINDER HEAD
COMPONENTS