TOYOTA SUPRA 1986 Service Repair Manual

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.
P 1 PPS SOLENOID
1±2 : APPROX. 7.7
(25°C, 77°F)
P 4 PPS ECU
4±GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
6±GROUND : ALWAYS CONTINUOUS
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C10A28P 127 (2JZ±GE)V1025 (2JZ±GTE)
C12B28P 429V1027 (2JZ±GE)
P 125 (2JZ±GTE)T 629
: 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
I 838INSTRUMENT PANEL WIREI 838INSTRUMENT PANEL WIRE
SYSTEM OUTLINE
SERVICE HINTS

184
SHIFT LOCK
1I 14 1I91I10
1 2SHIFT LOCK
CONTROL S W
SHIFT LOCK
SOLENOID
4 62 1 5
P1
P
P2
SLS±
SLS+
IE15A
CIG10A
ECU±IG15A
STOP
KEY INTERLOCK
SOLENOID ACC IG STP
KLS+EL±RL G±WG G±R
V
W±B W±B W±B
G±WB±RL±R
SHIFT LOCK ECU FROM POWER SOURCE SYSTEM(
SEE PAGE 56)
K3S7
1K 12
1J 1
W
1 2
STOP LIGHT
SW S11
W±B

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 ªPº 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 ªPº.
2. KEY INTERLOCK MECHANISM
WITH THE IGNITION SW ON OR ACC POSITION, WHEN THE SHIFT LEVER IS PUT IN ªPº 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.
S 7 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 CONTINUOUS
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
K 329S 729S1129
: 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
20COWL WIRE AND J/B NO.1 (LEFT KICK PANEL)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IE36LEFT KICK PANEL
1212
X4
5612 K3 S 7 S11BLUE
SYSTEM OUTLINE
SERVICE HINTS

186
CIGARETTE LIGHTER AND CLOCK
15A
CIG7. 5A
DOME10A
PANEL
1E 221I3
1E 111B 5
IF3 10 I15
A A521
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 C8
CIGARETTE
LIGHTER C6
JUNCTION
CONNECTOR J1FROM POWER SOURCE SYSTEM(
SEE PAGE 56)

187
C 6 CIGARETTE LIGHTER
2±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION
1±GROUND : ALWAYS CONTINUOUS
C 8 CLOCK
2±GROUND : ALWAYS 12 VOLTS (POWER FOR CLOCK)
5±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION
(POWER FOR INDICATION)
3±GROUND : ALWAYS CONTINUOUS
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C 628C 828J 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)
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
I1538INSTRUMENT PANEL WIRE
X2345C8BLACK
A AAA
AA AA
(
HINT : SEE PAGE 7) J1
1
2 C6
SERVICE HINTS

188
REMOTE CONTROL MIRROR
7. 5A
RAD NO. 2
IE1E 10
1J 11E 18
ID1 12 ID111 ID110 IL115 IL114 IL16
MMMM I5 B
M+ MVMH 534 4538
MLH MLV M+
217635EMRHMRV
MH MV M+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)
OPERATION SW SELECT SW
RH RHLH LHUP LEFT
LEFT
UP RIGHT DOWN
RIGHT
DOWN REMOTE CONTROL MIRROR SW R7
REMOTE CONTROL MIRROR LH R16 R17
REMOTE CONTROL MIRROR RH

189
R 7 REMOTE CONTROL MIRROR SW
8±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ACC OR ON POSITION
5±2 : CONTINUOUS WITH OPERATION SW AT LEFT OR UP POSITION
8±5 : CONTINUOUS WITH OPERATION SW AT RIGHT OR DOWN POSITION
2±GROUND : ALWAYS CONTINUOUS
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
R 729R1630R1730
: 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
I 538INSTRUMENT PANEL WIRE
12 3
X5 6 7 8
45 3453 R7 R16 R17
SERVICE HINTS

190
POWER SEAT
30A
DOOR
1H 15
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(
FOR DRIVE R' S SE AT) P11
P12
POWER SEAT MOTOR
(
FOR DRIVER' S SEAT
SLIDE CONTROL)RECLINING MOTOR
FRONT
REA R
FRONT
REA R R±W
W±B
2 1

191
P11 POWER SEAT CONTROL SW (FOR DRIVER'S SEAT) 2± GROUND: ALWAYS APPROX. 12 VOLTS
1± GROUND: ALWAYS CONTINUOUS
: 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
BI40LEFT QUARTER PILLAR
1
32
412 P11 P12
SERVICE HINTS

192
SEAT HEATER (FOR CANADA)
15A
SEAT±HTR
1H 16
I11I11
B9 I24 BQ1 4
IC1 6
34 12
34 12
2 1
2 1
BQ1 2
BI IGIG Y±R Y±RB
B
Y±R
Y
Y±R
B
Y±R
B L W±BL W±B
W±B
W±B W±B
W±B W±BW±BB
1 462 FROM POWER SOURCE SYSTEM(
SEE PAGE 56)
Y
IC1 7
BQ1 3
B B
LH RH
S6
SEAT HEATER SWSEAT HEATER
RELAY
(
FOR DRIVE R' S
SEAT)SEAT HEATER
RELAY
(
FOR PASSENGER' S
SEAT)
SEAT HEATER
(
FOR DRIVER' S
SEAT)
SEAT HEATER
(
FOR PASSENGER' S
SEAT) S12
S13
S14
S15