TOYOTA SUPRA 1997 Service Repair Manual

1 21 2
2 1
1 2
1 2
1 2 2 1
E16 E16 E16
IEIJ1 11
IJ2 12 IJ2 3 B 21 B1A 4 A 20
B 42 B63 B44 B24 B46 A3A18 B27 B7
3 12 8
43124 VTA2 IDL2 THW OIL THG K D M NE NE-
W- B W- B W- BL- R B- R
L- Y
O
BR- Y GR - RY- L
W- B W- B W- B GR- RW- BY- L L- R
W- B W- B
W- B
G- Y
B- R
BRG- YYY- L
G- WYL
G- W WB- R
Y- L
(
SHIELDED)(
SHIELDED) NCO+ NCO-STP TE 1FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
STOP LIGHT
SW DATA LINK
CONNECTOR 1
O/D DIRECT CLUTCH
SPEED SENSOR
S11 D 1
O 1
Y
S 5
SUB THROTTLE
POSITION SENSOR
ENGINE COOLANT TEMP. SENSOR
A/T FLUID TEMP. SENSOR
EGR GAS TEMP. SENSOR
KICK DOWN SW E 3
A 5
E 1
K 4
ELECTRONICALLY CONTROLLED
TRANSMISSION PATTERN
SELECT SW
CRANKSHAFT
POSITION SENSOR
E 8
C 3
ENGINE CONTROL MODULEA E 9 , E1 0B
E14 W- B
W- B
B 65E2
15A
STOP
1I 10
TE1 +B
NORMAL
MANUAL
1J 11H 13
142
ELECTRONICALLY CONTROLLED TRANSMISSION

I14
I17
EDII1 5II138 II111 A 9A10
B 69 B80 B79 A28 A25 A2
A65
A1
V W- LL- R G- BL- YY
P W- LV BR BR
BR BR
BR
BR
BR
P W- LV
P
L- RYYY G- BL- Y (
SHIELDED)
MI
OD2 EO2 EO1 E12L
JUNCTION
CONNECTOR J 2
FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
ODO AN D
TR I P
TELLTALE
LIGHT RH T 6ENGINE CONTROL MODULEA E 9 , E10B
E28 BR BRIJ2 11
LG-B LG-B
FROM CRUISE CONTROL
ECU
A 12
OD 1
IJ2 7G- R
G- R
2
CRUISE CONTROL ECU C16
SP1
G- R
B 78 E03
BRBR
D
10A
GA UGE
1E 12
143
AND A/T INDICATOR (2JZ-GTE)

A
7810 9234
I18 I21 I14I17E16 E16 I17 I14 I14E1 4
II1 7II136 II11II118 II117 II127
IF3 1 II1 2 II1 8II1 23
4 2
IE IH
SPEED
B 9A1A4A10 A6A7A8A11
B 11 B10 A12 A2A13 3 21
A R- B
LG- R
G- B
G- R Y
R- B
LG- R
G- B
G- R
L- R
W- L
VV
V V L- RY Y
W- B
W- BVV
W- BV
W- BW- LRL- RR
L- RR
Y
G- BL- Y G- RL R- B G- W
G- B LG- RG- RL R- BGR Y Y
Y Y
GR
R- B
L
G- R
LG- R
G- BY YY
Y
A/ T I NDICATOR LI GHT SW
[PARK/NEUTRAL POSITION SW] P 2
VEHICLE SPEED SENSOR NO. 1
(
COMBINATION METER) V10
O/D MAIN
SW O 5J 1
O/D OFFMANUPRND 2 L
COMBINATION METERA C10 , C11 , C12
B Y
IFC 11
BRBR
C
JUNCTION
CONNECTOR 9 DATA LINK
CONNECTOR 2 D 5
ECT
PRND 2 L
144
ELECTRONICALLY CONTROLLED TRANSMISSION

145
AND A/T INDICATOR (2JZ-GTE)
THIS SYSTEM ELECTRICALLY CONTROLS THE LINE PRESSURE, THROTTLE PRESSURE, LOCK-UP PRESSURE AND
ACCUMULATOR PRESSURE ETC. THROUGH THE SOLENOID VALVE. THE ELECTRONICALLY CONTROLLED
TRANSMISSION IS A SYSTEM WHICH PRECISELY CONTROLS GEAR SHIFT TIMING AND LOCK-UP TIMING IN
RESPONSE TO THE VEHICLE'S DRIVING CONDITIONS AND THE ENGINE OPERATING CONDITIONS DETECTED BY
VARIOUS SENSORS, MAKING SMOOTH DRIVING POSSIBLE BY SHIFT SELECTION FOR EACH GEAR WHICH IS THE
MOST APPROPRIATE TO THE DRIVING CONDITIONS AT THAT TIME, AND CONTROLS THE ENGINE TORQUE DURING
SHIFTING TO ACHIEVE OPTIMUM SHIFT FEELING.
1. GEAR SHIFT OPERATION
WHEN DRIVING, THE ENGINE WARM UP CONDITION IS INPUT AS A SIGNAL TO TERMINAL (B) 44 OF THE ENGINE
CONTROL MODULE FROM THE ENGINE COOLANT TEMP. SENSOR AND THE VEHICLE SPEED SIGNAL FROM
VEHICLE SPEED SENSOR NO. 2 IS INPUT TO TERMINAL (B) 23 OF THE ENGINE CONTROL MODULE. AT THE SAME
TIME, THE THROTTLE VALVE OPENING SIGNAL FROM THE THROTTLE POSITION SENSOR (MAIN) IS INPUT TO
TERMINAL (B) 43 OF THE ENGINE CONTROL MODULE AS THROTTLE ANGLE SIGNAL.
BASED ON THESE SIGNALS, THE ENGINE CONTROL SELECTS THE BEST SHIFT POSITION FOR DRIVING
CONDITIONS AND SENDS CURRENT TO THE ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOIDS.
WHEN SHIFTING TO 1ST SPEED, THE CURRENT FLOWS FROM TERMINAL (B) 10 OF THE ENGINE CONTROL
MODULE "TERMINAL 4 OF ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID"GROUNDAND
CONTINUITY TO NO. 1 SOLENOID CAUSES THE SHIFT (NO. 2 SOLENOID DOES NOT HAVE CONTINUITY AT THIS
TIME.)
FOR 2ND SPEED, THE CURRENT FLOWS SIMULTANEOUSLY FROM TERMINAL (B) 9 OF THE ENGINE CONTROL
MODULE "TERMINAL 8 OF ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID "GROUND AND FROM
TERMINAL (B) 10 OF THE ENGINE CONTROL MODULE "TERMINAL 4 OF ELECTRONICALLY CONTROLLED
TRANSMISSION SOLENOID"GROUND, AND CONTINUITY TO NO. 1 AND NO. 2 SOLENOIDS CAUSES THE SHIFT.
FOR 3RD SPEED, THERE IS NO CONTINUITY TO NO. 1 SOLENOID, ONLY TO NO. 2 SOLENOID, CAUSING THE SHIFT.
SHIFTING INTO THE 4TH SPEED (OVERDRIVE) OCCURS WHEN NO CURRENT FLOWS TO NO. 1 AND NO. 2
SOLENOIDS. THE NO. 4 SOLENOID (FOR ACCUMULATOR BACK PRESSURE MODULATION) IS INSTALLED TO
ADJUST THE BACK PRESSURE ON THE ACCUMULATOR AND CONTROLS THE HYDRAULIC PRESSURE DURING
SHIFTING AND LOCK-UP IN ORDER TO PROVIDE SMOOTH SHIFTING WITH LITTLE SHIFT SHOCK.
2. LOCK-UP OPERATION
WHEN THE ENGINE CONTROL MODULE DECIDES BASED ON EACH SIGNAL THAT THE LOCK-UP CONDITION HAS
BEEN MET, THE CURRENT THROUGH EFI NO. 1 FUSE FLOWS FROM THE EFI MAIN RELAY "TERMINAL 3 OF
ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID "TERMINAL 7"TERMINAL (B) 14 OF THE ENGINE
CONTROL MODULE "GROUND,SO CONTINUITY TO NO. 3 (FOR LOCK-UP) CAUSES LOCK-UP.
3. STOP LIGHT SW CIRCUIT
IF THE BRAKE PEDAL IS DEPRESSED (STOP LIGHT SW ON) WHEN DRIVING IN LOCK-UP CONDITION, A SIGNAL IS
INPUT TO TERMINAL(A) 4 OF THE ENGINE CONTROL MODULE. THE ENGINE CONTROL MODULE OPERATES AND
CUTS THE CURRENT TO THE SOLENOID.TO RELEASE LOCK-UP.
4. OVERDRIVE CIRCUIT
*O/D MAIN SW ON
WHEN THE O/D MAIN SW IS TURNED ON (SW POINT IS OPEN), A SIGNAL IS INPUT TO TERMINAL (A) 28 OF THE
ENGINE CONTROL MODULE, AND THE ELECTRONICALLY CONTROLLED TRANSMISSION CAUSES SHIFT TO
OVERDRIVE WHEN THE CONDITIONS FOR OVERDRIVE ARE MET.
*O/D MAIN SW OFF
WHEN THE O/D MAIN SW IS TURNED OFF (SW POINT IS CLOSED), THE CURRENT FLOWING THROUGH THE O/D
OFF INDICATOR LIGHT FLOWS TO GROUND BY WAY OF THE O/D MAIN SW AND CAUSES THE O/D OFF INDICATOR
LIGHT TO LIGHT UP. AT THE SAME TIME, A SIGNAL IS INPUT TO TERMINAL (A) 28 OF THE ENGINE CONTROL
MODULE AND THE ELECTRONICALLY CONTROLLED TRANSMISSION PREVENTS SHIFT INTO OVERDRIVE.
5. ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SW CIRCUIT
WHEN THE ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SW IS SWITCHED FROM NORMAL
TO MANUAL, A SIGNAL IS INPUT TO TERMINAL (A) 18 OF THE ENGINE CONTROL MODULE. INPUT OF THIS SIGNAL
CAUSES CURRENT TO FLOW FROM THE GAUGE FUSE TO TERMINAL (A) 1 OF THE COMBINATION METER "
TERMINAL (A) 12"TERMINAL (A) 25 OF THE ENGINE CONTROL MODULE "GROUND, LIGHTING UP THE
INDICATOR LIGHT. IF THE A/T SHIFT LEVER IS THEN SHIFTED TO 2`' POSITION, THE ENGINE CONTROL MODULE
ENABLES THE VEHICLE TO START OFF WITH THE TRANSMISSION IS 2ND GEAR, THUS PERMITTING EASING
STARTING OFF AND DRIVING ON SLIPPERY ROADS.
6. CRUISE CONTROL
WHEN CRUISE CONTROL OPERATION IS SELECTED A SIGNAL IS INPUT TO TERMINAL (A) 12 OF THE ENGINE
CONTROL MODULE FROM CRUISE CONTREOL ECU. AS A RESULT, THE ENGINE CONTROL MODULE OPERATES
AND CONTROLS OVERDRIVE, LOCK-UP AND SO ON FOR SMOOTH DRIVING.
SYSTEM OUTLINE

146
ELECTRONICALLY CONTROLLED TRANSMISSION
E2 ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID
8-GROUND:APPROX. 13.2:
4-GROUND:APPROX. 13.2:
6.2:APPROX. 8.3 :
7.3:APPROX. 3.8 :
1.5:APPROX. 3.8 :
E 3 ENGINE COOLANT TEMP. SENSOR
1-2:1- 10-20 K20
C4
F
4-7 K 0
C32
F
2-3 K20
C68
F
0.9-1.3 K-40
C-104
F
0.4-0.7 K-60
C140
F
0.2-0.4 K-80
C176
F
E 9 (B), E10 (A) ENGINE CONTROL MODULE
BATT-E1:AL WAYS 9-14 VOLTS
IGSW-E1:9-14 VOLTS WITH THE IGNITION SW ON
+B-E:9-14 VOLTS WITH THE IGNITION SW ON
IDL1-E1:0-1.5 VOLTS WITH THE IGNITION SW ON AND THE THROTTLE VALVE FULLY CLOSED
9-14 VOLTS WITH THE IGNITION SW ON AND THE THROTTLE VALVE FULLY OPEN
VTA1-E1:0.3-0.8 VOLTS WITH THE IGNITION SW ON AND THE THROTTLE VALVE FULLY CLOSED
3.2-4.9 VOLTS WITH THE IGNITION SW ON AND THE THROTTLE VALVE FULLY OPEN
STA-E1:6-14 VOLTS WITH THE ENGINE CRANKING
M-REL-E1:9-14 VOLTS WITH THE IGNITION SW ON
VCC-E1:4.5-5.5 VOLTS WITH THE IGNITION SW ON
L-E1:APPROX. 7.5-14 VOLTS WITH THE SHIFT LEVER AT Lº POSITION
2-E1:APPROX. 7.5-14 VOLTS WITH THE SHIFT LEVER AT 2º POSITION
R-E1:APPROX. 7.5-14 VOLTS WITH THE SHIFT LEVER AT Rº POSITION
0 1 O/D DIRECT CLUTCH SPEED SENSOR
1-2:APPROX. 620 :
V11 VEHICLE SPEED SENSOR NO. 2 (ELECTRONICALLY CONTROLLED TRANSMISION)
1-2:APPROX. 620 :
E 8 ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SW
4-3:CLOSED WITH ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SW AT MANUAL POSITION
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A 524(2JZ-GTE)E 324(2JZ-GTE)0 529
C 324(2JZ-GTE)E 829P225(2JZ-GTE)
C10B28E 9B29S 525
C11A28E10A29S1129
C12C28I1929T 225(2JZ-GTE)
C1628J 129T 629
D 124(2JZ-GTE)J 229T1425
D 528K 429V1025(2JZ-GTE)
E 124(2JZ-GTE)M 125V1125(2JZ-GTE)
E 224(2JZ-GTE)0 125
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
222R/B NO. 2 (ENGINE COMPARTMENT LEFT)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
IE20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1H
1I20COWL WIRE AND J/B NO 1 (LEFT KICK PANEL)1J20COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1K
2A22BATTERY AND J/B NO. 2 (ENGINE COMPARTMENT LEFT)
SERVICE HINTS

147
AND A/T INDICATOR (2JZ-GTE)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EA132(2JZ-GTE)ENGINE WIRE AND ENGINE ROOM MAIN WIRE (NEAR THE R/B NO 2)EA232ENGINE WIRE AND ENGINE ROOM MAIN WIRE (NEAR THE R/B NO. 2)
IB136ENGINE ROOM MAIN WIRE AND COWL WIRE (LEFT KICK PANEL)
IF336INSTRUMENT PANEL AND COWL WIRE (RIGHT KICK PANEL)
II138ENGINE WIRE AND INSTRUMENT PANEL (RIGHT KICK PANEL)
IJ138ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)IJ238ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EB32(2JZ-GTE)FRONT SIDE OF LEFT FENDER
ED32(2JZ-GTE)REAR SIDE OF INTAKE MANIFOLD
IE36LEFT KICK PANELIF36LEFT KICK PANEL
IH36RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E 732ENGINE ROOM MAIN WIREE1732ENGINE WIRE
E10I1438INSTRUMENT PANEL WIRE
E1332ENGINE WIREI1738ENGINE WIRE
E1432ENGINE WIREI1838COWL WIRE
E16I2138INSTRUMENT PANEL WIRE
12129 X101113 X 8 7 6 X 4 2 1 101112
11 XX2
XXX
XXX
X8X X
12 X X X X
X X X XX 9 X X1234
567834 2 1 BBLUE C10ABROWN C11 A 5 C 3
C C12C16 D 1
D 5 E 1 E 2 E 3 E 8 GRAY DARK GRAY
GREEN BLACK
DARK GRAY DARK GRAY GRAY DARK GRAYX
XX X
XXXXX
X
XX
X12X

148
ELECTRONICALLY CONTROLLED TRANSMISSION AND A/T
INDICATOR (2JZ-GTE)
10
X
X 1
21
41
XX
X
42
623
23
43
63X
24
44
6445
6546
667
27
XX
28
X9
X
69X
31
X
80 X
79 78 X
77 X
76 14 13 12
20
X
X 1
312
X3
334
24X
25
XX7
X
XX
18
289
X
X
X
A AAA
AA AAAA AA
AAAAAAA
5 4 3 2 1
2
4X
756234
89101234
121234
156
XXX123 B DARK GRAY E 9
A DARK GRAY E10
I19 J 1 J 2 K 4
M 1 O 1 O 5 P 2 S 5
S11 T 2 T 6V10
V11BLACK
BLACK BLACK BLUE GRAY BLACK
BLUE BLACKBLACK
BLACK10
(
HI NT : SEE PAGE 7)(
HINT : SEE PAGE 7) 12
123T1 4
BLACK
121212
678 X X

149
MEMO

30A
EFI
NO. 1
6
525 13
I17
EA33 EA18 EA14
IJ2 13 II1 13 IB1 42
22 22
EBB- OB B- WB- Y B- WB- R
B- W
B- Y
B- R
B- O
B
B- Y
B- W W- R W- R B
W- BB- W B- W
B- W B
B- R W- B
B- RB- O
IGNITION SW I19
PARK/NEUTRAL
POSITION SW P 2
2 FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
EFI MAIN
RE L A Y E20
B- W
1
6
8B- W
B- R
7. 5A
ST 7. 5A
IGN
1K 4 1E 81J 6 1J 3
BATTERY
P
N
7AM2 IG2
ST2
30A
AM2
2A2
1 2
1
150
ELECTRONICALLY CONTROLLED TRANSMISSION

E26 E26
A 24 A33 A31 B10 B9B8B23 B3
B 76 B77 A1B66 B45B 43 B64 1 2 B- R
B- W
B- Y
B- W
B
B- O
W- BB- R
W- B B- R
B- Y
B- W
B- R
W- R
R- L
B- R
R
G L- R
Y
W- B
R BR G- BY- RB- W
B
B- O
Y- R
G- B
Y
RB- R
2 3 5 4312 NSW STA IGS W
VG THA VTA1IDL1 M- REL BATT+B S1 S2 SL
ELECTRONICALLY CONTROLLED
TRANSMISSION SOLENOID E 2
SP2+ SP2-
VEHICLE SPEED SENSOR NO. 2
(
ELECTRONICALLY
CONT ROL LED T RAN SMI SSION) V11
T 2
THROTTLE POSITION
SENSORMASS AIR FL OW METER M 1
ENGINE CONTROL MODULEA E 9 , E10B
4E2 6 B 28EVG
VG THA E2G
E2B 41VC E23
+B
1
BRB- R
B- R W- BB- R
L- R
1 2B 44 THW
L- Y W- BENGINE COOLANT TEMP. SENSOR E 3
123
NO. 1
NO. 2
SLN W
B
Y
151
AND A/T INDICATOR (2JZ-GE)