1997 TOYOTA SUPRA engine

163
: 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)
IB236ENGINE ROOM MAIN WIRE AND COWL WIRE (LEFT KICK PANEL)
IB536ENGINE ROOM MAIN WIRE AND COWL WIRE (RIGHT KICK PANEL)IB636ENGINE ROOM MAIN WIRE AND COWL WIRE (RIGHT KICK PANEL)
IC236FLOOR NO. 2 WIRE AND COWL WIRE (LEFT KICK PANEL))
IF136INSTRUMENT PANEL WIRE AND COWL WIRE (INSTRUMENT PANEL REINFORCEMENT LH)IF236INSTRUMENT PANEL WIRE AND COWL WIRE (INSTRUMENT PANEL REINFORCEMENT LH)
II138ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
IJ138ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EA34(2JZ-GE)FRONT SIDE OF RIGHT FENDER
ED34(2JZ-GE)REAR SIDE OF INTAKE FENDER
IG36RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E1834ENGINE ROOM MAIN WIREI 438COWL WIREI 238COWL WIREI 938COWL WIRE

FR OM POWER SOUR CE SYS TEM (
SEE PAGE 56)
15A
STOP
I 4
I183 5 1 2 2
A 20 A 7 A 19 A 6 A 5 A 13 A 11
A 3 A 16 A 4 A 17 A 25 A 12 B 9 B 3 B 2 B 8 A 9 A 22 A 23 A 10IF2 12
IB5 2 IB5 1 IB2 5 IB2 4 IC2 8 IC2 3
IE IG8 16 7 15 4
2 1
2 1
1 2
1 2 1 2THROTTLE ECU T16
ABS DECELERATION SENSOR A23 ABS ECUB A2 0 , A2 1A
ABS SPEED SENSOR REAR RH A32
ABS SPEED SENSOR REAR LH A31
ABS SPEED SENSOR FRONT LH A10
ABS SPEED SENSOR FRONT RH A11STOP LIGHT SW S11 ABS WARNING LIGHT
[TELLTALE LIGHT LH] T 5
RR- RL+ RL- FL+ FL- FR+IG1 STP RRO RLO
L
L
L
B- R
G- W
Y- B
GR- R L
P
V
LG
W
B
RV
LG
W
B
R
LL
(
SHIELDED) W- B
W- B
G
R W- B
W- B
GL1 GG ND GND2 GND1 FR-VGS GL2
W
B (
SHIELDED)
FRO FL O
LG- B
OY L
W
RR+A 18IJ1 14
Y- R Y- R
11
EXO E10
ENGINE CONTROL MODULE
5
L
I 9 W- B WA
FL O FRO RLO RRO WA
ABS
GGND GL1 GL2 VGS
10A
GAUGE
1E 1210A
ECU- IG
1K 13 1I10
165

167
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A 6A24(2JZ-GTE)A21B28D 528
A 7B24(2JZ-GTE)A2328E1029
A1024(2JZ-GTE)A3130S1129
A1124(2JZ-GTE)A3230T 529
A20A28D 124(2JZ-GTE)T1629
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
222R/B NO. 2 (ENGINE COMPARTMENT LEFT)
523R/B NO. 5 (ENGINE COMPARTMENT RIGHT)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1E20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1H20COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1I20COWL WIRE AND NO. 1 (LEFT KICK PANEL
1K20COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
: 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)
IB236ENGINE ROOM MAIN WIRE AND COWL WIRE (LEFT KICK PANEL)
IB536ENGINE ROOM MAIN WIRE AND COWL WIRE (RIGHT KICK PANEL)IB636ENGINE ROOM MAIN WIRE AND COWL WIRE (RIGHT KICK PANEL)
IC236FLOOR NO. 2 WIRE AND COWL WIRE (LEFT KICK PANEL)
IF136INSTRUMENT PANEL WIRE AND COWL WIRE (INSTRUMENT PANEL REINFORCEMENT LH)IF236INSTRUMENT PANEL WIRE AND COWL WIRE (INSTRUMENT PANEL REINFORCEMENT LH)
II138ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
IJ138ENGINE WIRE AND COWL WIRE (RIGHT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IE36LEFT KICK PANEL
IG36RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I 238COWL WIREI 938COWL WIREI1138COWL WIREI1838COWL WIRE

169
TRACTION CONTROL
TRACTION CONTROL IS THE SYSTEM TO REALIZE A FAVORABLE ACCELERATOR CONTROLABILITY BY MAKING
THE ENGINE OUTPUT MOST APPROPRIATE FOR THE ACCELERATION UNDER EACH DRIVING CONDITION
PROVIDED BY THE THROTTLE ECU.
(TRACTION OFF SW)
THIS IS THE SWITCH TO STOP THE OPERATION OF SLIP CONTROL. AFTER STARTING THE ENGINE, PRESSING THE
SWITCH ONE TIME UNDER THE CONDITION THAT THE SNOW INDICATOR DOES NOT LIGHT ON, MAKES IT IN THE
OPERATION STOP CONDITION (OFF), AND PRESSING IT ONE MORE TIME MAKES IT IN THE OPERATION WAITING
CONDITION. IN ADDITION, RESTARTING AFTER THE ENGINE STOP MAKES IT IN THE OPERATION WAITING
CONDITION WITHOUT CONCERNING THE TRACTION OFF SW.
(SNOW MODE SW)
THIS IS THE SWITCH TO FIX LOW  LOADS CONTROL AT THE TIME OF DRIVING ON A SLIPPERY ROAD SUCH AS
SNOWY ROAD. AFTER STARTING THE ENGINE, PRESSING THE SWITCH MAKES IT FIX AT LOW LOAD CONTROL
AND SNOW INDICATOR LIGHT COMES ON. IN ADDITION, RESTARTING AFTER THE ENGINE STOP MAKES IT ALWAYS
IN NORMAL CONDITION (AUTO MODE) WITHOUT CONCERNING THE SNOW MODE SW CONDITION. PRESSING THE
SNOW MODE SW UNDER OPERATION PROHIBITION CONDITION OF THE TRACITION (TRAC OFF INDICATOR LIGHTS
ON.) CANCELS THE OPERATION PROHIBITION OF THE TRACTION AND ALSO FIXES IT AT LOW  LOAD CONTROL.
(TRAC OFF INDICATOR LIGHT)
THIS LIGHT COMES ON BY SELECTING THE OPERATION STOP CONDITION OF THE TRACTION CONTROL WITH
TRACTION OFF SW AND ALERTS THE DRIVER TO BE IN OPERATION STOP CONDITION AND ALSO ALERTS THE
DRIVER BY BLINKING IN CASE OF THE OCCURANCE OF THE SYSTEM MAULFUCTION.
T15 (A), T16 (B)THROTTLE ECU
WT-E1: 0.3 VOLTS WITH THE IGNITION SW ON AND THE TRAC OFF INDICATOR LIGHT ON
9-14 VOLTS WITH THE IGNITION SW ON AND THE TRAC OFF INDICATOR LIGHT OFF
IND-E1 :0.3 VOLTS WITH THE IGNITION SW ON AND SLIP INDICATOR LIGHT ON
:9-14 VOLTS WITH THE IGNITION SW ON AND SLIP INDICATOR LIGHT OFF
CSW-E1:0.3 VOLTS WITH THE IGNITION SW ON AND THE TRAC OFF SW HOLDED ON PUSHING
:9-14 VOLTS WITH THE IGNITION SW ON AND THE TRAC OFF SW RELEASED
SIND-E10.3 VOLTS WITH THE IGNITION SW ON AND THE SNOW INDICATOR LIGHT ON
9-14 VOLTS WITH THE IGNITION SW ON AND THE SNOW INDICATOR LIGHT OFF
SNOW-E1:0.3 VOLTS WITH THE IGNITION SW ON AND THE SNOW MODE SW HELD ON PUSHING
:9-14 VOLTS WITH THE IGNITION SW ON AND THE SNOW MODE SW RELEASED
NE-E1: PULSE GENERATION (ENGINE IDLING)
TC-E1:4.5-5.5 VOLTS WITH THE IGNITION SW ON AND THE ENGINE NOT RUNNING
WA-E1:9-14 VOLTS WITH THE IGNITION SW ON AND THE ABS ECU NORMAL CONDITION
0.3 VOLTS WITH THE IGNITION SW ON AND THE ABS ECU ABNORMAL CONDITION
EFIB-E19-14 VOLTS WITH THE IGNITION SW ON AND THE ENGINE NOT RUNNING
IDL2-E1:9-14 VOLTS WITH THE ENGINE RUNNING AND THE SUB THROTTLE VALVE FULLY OPEN
0-3 VOLTS WITH THE ENGINE RUNNING AND THE SUB THROTTLE VALVE FULLY CLOSED
VTA2-E1:3.2-4.9 VOLTS WITH THE ENGINE RUNNING AND THE SUB THROTTLE VALVE FULLY OPEN
0.3-0.8 VOLTS WITH THE ENGINE RUNNING AND THE SUB THROTTLE VALVE FULLY CLOSED
BATT-E1: ALWAYS 9-14 VOLTS
+B-E1:9-14 VOLTS WITH THE IGNITION SW ON AND ENGINE NOT RUNNING
IDL1-E1:9-14 VOLTS WITH THE IGNITION SW ON AND THE THROTTLE VALVE FULLY OPEN
0-3 VOLTS WITH THE IGNITION SW ON AND THE THROTTLE VALVE FULLY CLOSED
VTA1-E1:3.2-4.9 VOLTS WITH THE IGNITION SW ON AND THE THROTTLE VALVE FULLY OPEN
0.3-0.8 VOLTS WITH THE IGNITION SW ON AND THE THROTTLE VALVE FULLY CLOSED
RLY+-RL Y :9-14 VOLTS WITH THE IGNITION SW ON
A,A-,B,B+--EO1: PULSE GENERATION (ENGINE RUNNING AND THE THROTTLE VALVE FULLY CLOSED)
EFI+,EFI-, ETC+,ETC--E1: PULSE GENERATION (IGNITION SW ON)
T 8 TRACTION CONTROL SW
4-6:CLOSED WITH THE TRACTIOIN CONTROL SW AT OFF POSITION
8-6:CLOSED WITH THE TRACTIOIN CONTROL SW AT SNOW POSITION
S18 SUB THROTTLE VALVE MOTOR
4-6, 3-1:APPROX. 0.44 W
SYSTEM OUTLINE
SERVICE HINTS

7. 5A
TRAC
2 FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
1
36 1455
55 2
4613
619 720
6 48
238
B 8 B 16 B 7 B 15 A 23 A 25 A 24 A 12 A 11 B 12 B 4 B 9 B 1
B 64 B63 A40 A39A 19 A 6 A 4 A 3 A 26 A 13 B 14 B 6IB5 14
IB5 12IB5 11
E16
I11
IG IE EC EDSUB THROTTLE
VALVE MOTOR S18ABS ECU A20
TRACTION
CONTROL
SW T 8
SUB THROTTL E
POSITION SENSOR S 5
THROTTLE POSITION SENSOR T 2
ENGINE CONTROL
MODULEA E 9 , E10
B THROTTLE ECUB T1 5 , T1 6AR
W- R
L- Y L- R
L- B
BR- B BR- BL- B L- R
(
SHIELDED)
Y
L
B
R
Y- B
GR- R
LG- B
O
BATT +B RLY+ RLY-
A-GE01
FRO
E1 EO1 SNOW
R GR- R
V- Y
G- O GR- RR R GR - RBR W- BR- BLG
W- B W- B
W- B
IDL1 IDL2
VTO1 VTO2 TRACTION
SOLENOID
RELAY
E16 : M/T
I17 : A/T
VTA1 VTA2 IDL1 IDL2 CSWAB- B RLORRO FLO
10A
EC U- B
1H 8
A- A B- B
FLO FR O RLO RROTC
SNOWOFF
170
TRACTION CONTROL

A 38A 1630A
EFI NO. 1
2 FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
1
112
51 3222
22 42
4 8
A 17 A9A8A21 A14 A7A20 A15B 5B7
A 24A 26 A 27 A 13 A 14 B 51 B 67B 3B10 B5B11 B2A1 A 9
IF2 2IF212
IF1 9IF21
I 2 I 2
I14
EB EA2 2
EA1 8 IF1 11
II1 2113
Y DATA LINK
CONNECTOR 2 D 5
DATA LINK
CONNECTOR 1 D 1
TELL TALE LIGHT LH T 5
THROTTLE ECUB T15 , T1 6A
ENGINE CONTROL MODULEA E 9 , E10
B
COMBINATION
METERB C10 , C12A
LG- R
R
R
RR P- B P- B
LG- R LG- R
LG- R
LG- R
L L
P- G
WWP- G
YY
TC TCOPA
SNOW
SLIP
TCWA SI N DEFI MAIN
RELA Y
B- R B- R B- Y
W- B
EFIB
P
W- L
Y
BR
(
SH IEL DED)
B
W
(
SH IEL DED)
GR
GRFAIL ETC+ ETC- GE12 EFI+ EFI- GE11
EFIF FAIL
W- B
ETC+ ETC- EFI+ EFI-
M- RELNE
P- L
NEO WT IND
EFIF
GR
10A
GAUGE
1E 12
TRAC
OFF
ABS
171

172
TRACTION CONTROL
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A2028E 9B29T 529
C10A28E10A29T 829
C12B28S 525(2JZ-GTE)T15A29
D 124(2JZ-GTE)S1825(2JZ-GTE)T16B29
D 528T 225(2JZ-GTE)
: RELAY BLOCKS
CODESEE PAGERELAY BLOCKS (RELAY BLOCK LOCATION)
222R/B NO. 2 (ENGINE COMPARTMENT LEFT)
523R/B NO. 5 (ENGINE COMPARTMENT RIGHT)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1E20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1H20COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOIINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
EA132(2J2 GTE)ENGINE WIRE AND ENGINE ROOM MAIN WIRE (NEAR THE R/B NO 2)EA232(2J2-GTE)ENGINE WIRE AND ENGINE ROOM MAIN WIRE (NEAR THE R/B NO. 2)
IB536ENGINE ROOM MAIN WIRE AND COWL WIRE (RIGHT KICK PANEL)
IF136INSTRUMENT PANEL WIRE AND COWL WIRE (INSTRUMENT PANEL REINFORCEMENT LH)IF236INSTRUMENT PANEL WIRE AND COWL WIRE (INSTRUMENT PANEL REINFORCEMENT LH)
II138ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
EB32(2JZ-GTE)FRONT SIDE OF LEFT FENDER
EC32(2JZ-GTE)FRONT SIDE OF INTAKE MANIFOLD
ED32(2JZ-GTE)REAR SIDE OF INTAKE MANIFOLD
IE36LEFT KICK PANEL
IG36RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E1632ENGINE WIREI1438INSTRUMENT PANEL WIRE
I 238COWL WIREI1738ENGINE WIRE
I1138COWL WIRE

175
*2 : 2JZ- GE *1 : 2JZ- GTE
15A
STOP
I17
I 4 IJ2 10 IJ211 IJ13IB615 IB69IB617 IB68 A 8
B 2
B 64 A 12 B 9
3 4
1 2 FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
22 9 21
10 161 243
12 11
G- W
R- L BR- YG- RLG LG
G- R
W- B
R- L R- L
W W G- W G- W
B- WR- B LG- BR- L
RRBR- BR- L
R R- L
R- L
CRUISE CONTROL ACTUATOR C 4
B- W
TO LIGHT FAILURE
SENSOR
STOP LI GHT SW S11
IDL S2
S2 OD1 IDL1THROTTL E
POSITION SENSOR
ENGINE CONTROL MODULE ELECTRONICALLY CONTROLLED
TRANSMISSION SOLENOIDB E 2, A
A E 9, E10 B
(
2JZ- GE) (
2JZ- GTE)
IE18 19 13
L R- Y W- B W- B W- B
W- B 1 715 5
C14
CRUISE CONTROL SW
[COMB. SW]
(
A/ T)
(
*1 A/T) (
A/ T) (
A/T)
(
A/T)(
A/ T)
CRUISE CONTROL C16T 2
3
2(
2J Z- GTE)
(
2J Z- GE)
LG- B
(
*2 A/T)
(
*1) (
*1)
I17
(
*1)
R- B
R- B
R- B (
*2)
(
*2)
(
*2)
E16
W- B
G- W
I 9 : * 1
I 4 : * 2
1I 10
1J 11H 13
M
MC GND MO L
IDL OD ECT
L STP-MO MC
CMS CCS GND ECU
RESUME/
ACCEL
SET/
COAST
CANCELCCS
ECMSMAIN