TOYOTA SUPRA 1997 Service Repair Manual

I14
A 9
B 11
II1 4II114
IFIH SOL+ SOL- E
II1 8 II1 23 II1 2
1 3254
6 1
75Y
Y
P
Y
P W- G
W- L
W- B LG- B
LG- RBRR Y L- R
YY
B- R
1PPS ECU SPEEDOMETER
[COMB. METER] ODO AND TRIP
V10
VEHICLE SPEED SENSOR NO. 1
(
COMBINATION METER)FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
SPD B
P 4 I14
I14
TELLTALE LIGHT RH T 6
A 10 A 11
26 B C1 0 , C12A
L- R
Y
RL- RBR
L- R
PPS SOLENOID P 1
I 8
BR
BR12
W- G
W- L(
2JZ- GTE)
(
2JZ- GTE)
(
2JZ- GE) (
2JZ- GE)
10A
GAUGE
1E 1210A
ECU- IG
1E 17
182
PPS

183
THE PPS (HYDRAULIC REACTION TYPE) CONTROLS THE HYDRAULIC PRESSURE APPLIED TO THE HYDRAULIC
REACTION CHAMBER IN THE GEAR BOX CONTROL UNIT USING THE PPS ECU, TO CHANGE THE STEERING FORCE
AND PROVIDE OPTIMUM STEERING FEELING AT ANY VEHICLE SPEEDS AND UNDER ANY STEERING CONDITIONS.
(PPS OPERATION)
WHEN THE IGNITION SW IS TURNED ON THE STARTING CURRENT FLOWS FROM THE ECU-IG FUSE TO TERMINAL
4 OF THE PPS ECU. THE PPS ECU MONITORS VEHICLE SPEED, INPUT SIGNAL TO TERMINAL 5 OF THE ECU.
WHEN THE VEHICLE SPEED IS LOW, THE PPS ECU SENDS A HIGHER-CURRENT FROM TERMINAL 1 OF THE ECU 
TERMINAL 1 OF THE SOLENOID VALVE TERMINAL 2 TERMINAL 2 OF THE ECU TERMINAL 6 
GROUND, INCREASING THE SOLENOID VALVE OPENING ANGLE TO PROVIDE COMFORTABLE STEERING
OPERATION. WHEN THE VEHICLE SPEED IS HIGH, THE PPS ECU DECREASES THE SOLENOID VALVE OPENING
ANGLE BY REDUCING THE CURRENT TO THE VALVE TO PROVIDE RESPONSIVE STEERING FEELING.
P1 PPS SOLENOID
1-2 : APPROX. 7.7 W (25
C, 77
F)
P4 PPS ECU
4-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
6-GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C10A28P127 (2JZ-GE)V1025 (2JZ-GTE)
C12B28P429V1027 (2JZ-GE)
P125 (2JZ-GTE)T629
: 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)
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
II138ENGINE WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IF36LEFT KICK PANEL
IH36RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I838INSTRUMENT PANEL WIREI1438INSTRUMENT PANEL WIRE
SYSTEM OUTLINE
SERVICE HINTS

3 4SHIFT LOCK
SHIFT LOCK
SOLENOID
4 62 1 5
IEKEY INTERLOCK SOLENOID
[UNLOCK WARNING SW] ACC IG STP
KLS+EL- RL G- WG G- R
V
W- B W- B W- B
G- WB- RL- R
SHIFT LOCK ECU
U 1S 7
W
1 2
STOP LIGHT
SW S11
W- BP1
P
P2
SLS-
SLS+4
1
3
1
1K 12
1J 1
CONTROL SW
2
FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
1I 14 1I91I10 15A
CIG10A
ECU- IG15A
STOP
184
SHIFT LOCK

185
WHEN THE IGNITION SW IS TURNED TO ACC POSITION THE CURRENT FROM THE CIG FUSE FLOWS TO TERMINAL
5 OF THE SHIFT LOCK ECU, IN THE ON POSITION, THE CURRENT FROM THE ECU-IG FUSE FLOWS TO TERMINAL 1
OF THE ECU.
1. SHIFT LOCK MECHANISM
WITH THE IGNITION SW ON, WHEN A SIGNAL THAT THE BRAKE PEDAL IS DEPRESSED (STOP LIGHT SW ON) AND A
SIGNAL THAT THE SHIFT LEVER IS PUT IN Pº POSITION (CONTINUITY BETWEEN P1 AND P OF THE SHIFT LOCK
CONTROL SW) IS INPUT TO THE ECU, THE ECU OPERATES AND CURRENT FLOWS FROM TERMINAL 1 OF THE ECU
 TERMINAL `SLS+' OF THE SHIFT LOCK SOLENOID SOLENOID TERMINAL `SLS-' TERMINAL 4 OF THE ECU
GROUND. THIS CAUSES THE SHIFT LOCK SOLENOID TO TURN ON (PLATE STOPPER DISENGAGES) AND THE
SHIFT LEVER CAN SHIFT INTO POSITION OTHER THAN THE Pº.
2. KEY INTERLOCK MECHANISM
WITH THE IGNITION SW ON OR ACC POSITION, WHEN THE SHIFT LEVER IS PUT IN Pº POSITION (NO CONTINUITY
BETWEEN P2 AND P OF SHIFT LOCK CONTROL SW), THE CURRENT FLOWING FROM TERMINAL 6 OF THE ECU 
KEY INTERLOCK SOLENOID IS CUT OFF. THIS CAUSES THE KEY INTERLOCK SOLENOID TO TURN OFF (LOCK
LEVER DISENGAGES FROM LOCK POSITION) AND THE IGNITION KEY CAN BE TURNED FROM ACC TO LOCK
POSITION.
S7 SHIFT LOCK ECU
5-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ACC OR ON POSITION
1-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
4-GROUND : ALWAYS CONTINUITY
2-GROUND : APPROX. 12 VOLTS WITH THE BRAKE PEDAL DEPRESSED
S11 STOP LIGHT SW
2-1 : CLOSED WITH THE BRAKE PEDAL DEPRESSED
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
S729S1129U129
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1I
1J20COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1K
()
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IE36LEFT KICK PANEL
12
X4
5612 S 7 S11BLUE
34U 1
SYSTEM OUTLINE
SERVICE HINTS

7. 5A
DOME
2
IF3 10 I 8
A A52 2
4 3 12
AL- R
W- B
G- O
G- O G- OR L- R L- R W- BL- R
R
IH
W- B
CLOCK C 8
CI GAR ETTE
LIGHTER C 6
JUNCTION
CONNECTOR J 1
15A
CI G
1E 2
1E 111B 5
10A
PANEL
1I 3
1 FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
186
CIGARETTE LIGHTER AND CLOCK

187
C6 CIGARETTE LIGHTER
2-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ACC OR ON POSITION
1-GROUND : ALWAYS CONTINUITY
C8 CLOCK
2-GROUND : ALWAYS 12 VOLTS (POWER FOR CLOCK)
5-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ACC OR ON POSITION
(POWER FOR INDICATION)
3-GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C628C828J129
: 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)
1I20COWL 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)
IF336INSTRUMENT PANEL WIRE AND COWL WIRE (RIGHT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IH36RIGHT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I838INSTRUMENT PANEL WIRE
X2 34 5C 8GRAY
A AAA
AA A A
(
HINT : SEE PAGE 7) J 1
1
2 C 6
SERVICE HINTS

IEID1 12 ID111 ID110 IL115 IL114 IL16 I 5 8
217635
LG- RBR- B
LG- R BR - B LG- B
BR - YLG W- B W- B
LG
LG- B
LG- R
LG- R
BR- Y
BR- B LG
LG- B
LG- R
LG- R
BR- Y
BR- B W- B
GR
FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
REMOTE CONTROL MIRROR SW R 7
REMOTE CONTROL MIRROR LH R16 R17
REMOTE CONTROL MIRROR RH
7. 5A
RA D NO. 2
1E 10
MM MMM+ MVMH 534 453
MH MV M+
B
MLH MLV M+ EMRHMRV
OPERATION SW SELECT SW
RH RHLH LHUP LEFT
LEFT
UP RIGHT DOWN
RIGHT
DOWN
1J 11E 18
188
REMOTE CONTROL MIRROR

189
R7 REMOTE CONTROL MIRROR SW
8-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ACC OR ON POSITION
5-2 : CONTINUITY WITH THE OPERATION SW AT LEFT OR UP POSITION
8-5 : CONTINUITY WITH THE OPERATION SW AT RIGHT OR DOWN POSITION
2-GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
R729R1630R1730
: 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)
1J20COWL 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)
ID136FRONT DOOR LH WIRE AND INSTRUMENT PANEL WIRE (LEFT KICK PANEL)
IL138FRONT DOOR RH WIRE AND INSTRUMENT PANEL WIRE (RIGHT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IE36LEFT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I538INSTRUMENT PANEL WIRE
12 3
X56 7 8
45 345 3 R 7 R16 R17
SERVICE HINTS

IC2 6
BQ1 1
M M 21
BQ1 2
BI FROM POWER SOURCE SYSTEM (
SEE PAGE 56)
1 3 42
L- W L- W L- W L
L- B
W- B W- B
POWER SEAT CONTROL SW (
DRIVER' S SEAT) P11
P12
POWER SEAT MOTOR
(
DRIVER' S SEAT
SLIDE CONTROL)RECLINING MOTOR
R- W
W- B
30A
DOOR
1H 152 1
FRONT
REAR
FRONT
REAR
190
POWER SEAT

191
P11 POWER SEAT CONTROL SW (DRIVER'S SEAT)
2-GROUND : ALWAYS APPROX. 12 VOLTS
1-GROUND : ALWAYS CONTINUITY
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
P1131P1231
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1H20COWL 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)
IC236FLOOR NO. 2 WIRE AND COWL WIRE (LEFT KICK PANEL)
BQ142FLOOR NO. 2 WIRE AND SEAT WIRE (UNDER THE FRONT LH SEAT)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
B140LEFT QUARTER PILLAR
1
32
412 P11 P12
SERVICE HINTS