1997 TOYOTA SUPRA engine

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

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)

1 21 2
2 1
1 2
E28 E28
IEIJ1 11
IJ 2 12 IJ2 3A 4 A 20
B 24 B46 A3A18 B25 B7
3 12 8
4 OIL THG KD M G2 G-
W- B W- BB- R
O
BR- Y W- B W- B
W- B W- B
W- B
G- Y
W
GG- YY
G- W G- W WB- R
Y- L
(
SHIELDED)(
SHIELDED) STP TE1FROM P OWER SOURCE SYSTEM (
SEE PAGE 56)
STOP LIGHT
SW DA TA L INK
CONNECTOR 1
S11 D 1
Y A/T FLUID TEMP. SENSOR
EGR GAS TEMP. SENSOR
KICK DOWN SWA 5
E 1
K 4
ELECTRONICALLY CONTROLLED
TRANSMISSION PATTERN
SELECT SW E 8 ENGINE CONTROL MODULEA E 9 , E10B
B 26G1
R
B 27NE
B
1234
DISTRIBUTOR D 4
BR A 32PS
1 2
BR- W BRPOWER STEERING
PRESSURE SW P 3
B 65
W- B
E2
1J 11H 13
NORMAL
MANUAL
NE G1 G2 G-
TE1 +B
15A
STOP
1I 10
152
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
10A
GA UGE
1E 12
D
153
AND A/T INDICATOR (2JZ-GE)

155
AND A/T INDICATOR (2JZ-GE)
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 TERMINAL (B) 23 OF THE ENGINE CONTROL MODULE. AT THE SAME
TIME, THE THROTTLE VALVE OPENING SIGNAL FROM THE THROTTLE POSITION SENSOR IS INPUT TO TERMINAL
(B) 43 OF THE ENGINE CONTROL MODULE AS THROTTLE ANGLE SIGNAL.
BASED ON THESE SIGNALS, THE ENGINE CONTROL MODULE 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 1 OF THE ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID .  GROUND AND
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 2 OF ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID  GROUND, AND
FROM TERMINAL (B) 10 OF THE ENGINE CONTROL MODULE  TERMINAL 1 OF THE 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.
2. LOCK-UP OPERATION
WHEN THE ENGINE CONTROL MODULE JUDGES FROM EACH SIGNAL THAT LOCK-UP OPERATION CONDITIONS
HAVE BEEN MET, THE CURRENT FLOWS FROM TERMINAL (B) 8 OF THE ENGINE CONTROL MODULE  TERMINAL
3 OF THE ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID GROUND, CAUSING CONTINUITY TO
THE LOCK-UP SOLENOID AND CAUSING LOCK-UP OPERATION.
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
OVERRIDE 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 THROUGHTHE 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 2º POSITION, THE ENGINE CONTROL MODULE
ENABLES THE VEHICLE TO START OFF WITH THE TRANSMISSION IN 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 CONTROL ECU. AS A RESULT, THE ENGINE CONTROL MODULE OPERATES AND
CONTROLS OVERDRIVE, LOCK-UP AND SO ON FOR SMOOTH DRIVING.
SYSTEM OUTLINE

156
ELECTRONICALLY CONTROLLED TRANSMISSION
E2 ELECTRONICALLY CONTROLLED TRANSMISSION SOLENOID
1, 2, 3-GROUND:EACH 11-15W
E 3 ENGINE COOLANT TEMP. SENSOR
4-7 K 0
C32
F)
2-3 K20
C68
F)
0-9.3 K40
C 104
F)
0-4.7 K60
C140
F)
0-2.4 K80
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-E1:9-14 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: 7.5-14 VOLTS WITH THE SHIFT LEVER AT Lº POSITION
2-E1: 7.5-14 VOLTS WITH THE SHIFT LEVER AT 2º POSITION
V11 VEHICLE SPEED SENSOR NO. 2 (ELCTRONICALLY CONTROLLED TRANSMISSION)
1-2:APPROX. 620
E 8 ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SW
4-3 :CLOSED WITH THE ELECTRONICALLY CONTROLLED TRANSMISSION PATTERN SELECT SW AT MANUAL
POSITION
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A426(2JZ-GE)E 326(2JZ-GE)0 529
C10B28E 829P 227(2JZ-GE)
C11A28E 9B29P 327(2JZ-GE)
C12C28E10A29S1129
C1628I1929T 227(2JZ-GE)
D 126(2JZ-GE)J 129T 629
D 426J 229V1027(2JZ-GE)
E 126(2JZ-GE)K 429V1127(2JZ-GE)
E 226(2JZ-GE)M 129
: 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)
1B20ENGINE ROOM MAIN WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1E20INSTRUMENT 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)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EA134(2JZ-GE)ENGINE WIRE AND ENGINE ROOM MAIN WIRE (NEAR THE R/B NO 2)EA334ENGINE WIRE AND ENGINE ROOM MAIN WIRE (NEAR THE R/B NO. 2)
IB136ENGINE ROOM MAIN WIRE AND COWL WIRE (LEFT KICK PANEL)
IF336INSTRUMENT PANEL WIRE AND COWL WIRE (RIGHT KICK PANEL)
II138ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
IJ138ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)IJ238ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)
SERVICE HINTS

157
AND A/T INDICATOR (2JZ-GE)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EB34(2JZ-GE)FRONT SIDE OF LEFT FENDER
ED34(2JZ-GE)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
E20I1438INSTRUMENT PANEL WIRE
E2334ENGINE WIREI1738ENGINE WIRE
E2634ENGINE WIREI2138INSTRUMENT PANEL WIRE
E28
129 X101113 X 8 7 6 X 4 2 1 101112
11 XXX
X8X X
12 X XX
123 4
21
1
3 22 1
34 BBLUE C10ABROWN C11 A 5
C C12D 1
D 4 E 1 E 2 E 3E 8 GRAY
BL AC K
BLACK DARK GRAY BLACKX
GREEN X2
XXX
XC16 GREEN
XX
XXX
X X X
XX XX

162
ABS (W/O TRACTION CONTROL)
THIS SYSTEM CONTROLS THE RESPECTIVE BRAKE FLUID PRESSURES ACTING ON THE DISC BRAKE CYLINDERS
OF THE RIGHT FRONT WHEEL, LEFT FRONT WHEEL AND REAR WHEELS WHEN THE BRAKES ARE APPLIED IN A
PANIC STOP SO THAT THE WHEELS DO NOT LOCK. THIS RESULTS IN IMPROVED DIRECTIONAL STABILITY AND
STEERABILITY DURING PANIC BRAKING.
1. INPUT SIGNALS
(1) SPEED SENSOR SIGNAL
THE SPEED OF THE WHEELS IS DETECTED AND INPUT TO TERMINALS FL+, FR+, RL+ AND RR+ OF THE ABS
ECU.
(2) STOP LIGHT SW SIGNAL
A SIGNAL IS INPUT TO TERMINAL STP OF THE ABS ECU WHEN THE BRAKE PEDAL IS DEPRESSED.
2. SYSTEM OPERATION
DURING SUDDEN BRAKING, THE ABS ECU WHICH HAS SIGNALS INPUT FROM EACH SENSOR CONTROLS THE
CURRENT FLOWING TO THE SOLENOID INSIDE THE ACTUATOR AND LETS THE HYDRAULIC PRESSURE ACTING ON
EACH WHEEL CYLINDER ESCAPE TO THE RESERVOIR. THE PUMP INSIDE THE ACTUATOR IS ALSO OPERATING AT
THIS TIME AND IT RETURNS THE BRAKE FLUID FROM THE RESERVOIR TO THE MASTER CYLINDER, THUS
PREVENTING LOCKING OF THE VEHICLE WHEELS.
IF THE ECU JUDGES THAT THE HYDRAULIC PRESSURE ACTING ON THE WHEEL CYLINDER IS INSUFFICIENT, THE
CURRENT ACTING ON SOLENOID IS CONTROLLED AND THE HYDRAULIC PRESSURE IS INCREASED.
HOLDING OF THE HYDRAULIC PRESSURE IS ALSO CONTROLLED BY THE ECU, BY THE SAME METHOD AS ABOVE,
BY REPEATED PRESSURE REDUCTION, HOLDING AND INCREASE ARE REPEATED TO MAINTAIN VEHICLE
STABILITY AND TO IMPROVE STEERABILITY DURING SUDDEN BRAKING.
A 6 (A), A 7 (B) ABS ACTUATOR
(A) 1-GROUND : ALWAYS CONTINUITY
(B) 5-(A) 4:33

(B) 1,(B) 2,(B) 4,(A) 4:APPROX. 8.8

(B) 5,(B) 6,(B) 8,(A) 4:APPROX. 4.3

A10, A11 ABS SPEED SENSOR FRONT LH, RH
1-2:1.4-1.8 K
(20
C, 68
F)
A31, A32 ABS SPEED SENSOR REAR LH, RH
1-2:0.9-1.3 K
(20
C, 68
F)
A18, (B), A19(A) ABS ECU
(B) 2-GROUND :10-14 VOLTS WITH THE IGNITION SW ON
(B)12-GROUND :10-14 VOLTS WITH THE STOP LIGHT SW ON (BRAKE PEDAL DEPRESSED)
(A) 2, (A) 13-GROUND :ALWAYS CONTINUITY
(A) 1, (A) 4, (A) 10, (A) 11, (A) 21, (A) 22-GROUND:10-14 VOLTS WITH THE IGNITION SW ON
S11 STOP LIGHT SW
1-2:CLOSED WITH THE BRAKE PEDAL DEPRESSED
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A 6A26(2JZ-GE)A1126(2JZ-GE)D 126(2JZ-GE)
A 7B26(2JZ-GE)A18B28D 528
A 8A26A19A28S1129
A 9B26A3130T 529
A1026(2JZ-GE)A3230
: 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 HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
1E20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1I20COWL WIRE AND J/B NO 1 (LEFT KICK PANEL)1K20COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
SYSTEM OUTLINE
SERVICE HINTS