1997 TOYOTA SUPRA engine

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Page 1166 of 1807

TOYOTA SUPRA 1997 Service Repair Manual 177
7. AUTO CANCEL FUNCTION
A) IF ANY OF THE FOLLOWING OPERATING CONDITIONS OCCUR DURING CRUISE CONTROL OPERATION, THE SET
SPEED IS ERASED, CURRENT FLOW TO MAGNETIC CLUTCH IS STOPPED AND THE CRUISE CO

177
7. AUTO CANCEL FUNCTION
A) IF ANY OF THE FOLLOWING OPERATING CONDITIONS OCCUR DURING CRUISE CONTROL OPERATION, THE SET
SPEED IS ERASED, CURRENT FLOW TO MAGNETIC CLUTCH IS STOPPED AND THE CRUISE CONTROL IS
RELEASED. (MAIN SW TURNS OFF).
WHEN THIS OCCURS, THE IGNITION SW MUST BE TURNED OFF ONCE BEFORE THE MAIN SW WILL TURN ON.
*OVER CURRENT TO TRANSISTOR DRIVING MOTOR AND/OR MAGNETIC CLUTCH.
*WHEN CURRENT CONTINUED TO FLOW TO THE MOTOR INSIDE THE ACTUATOR IN THE THROTTLE VALVE
OPENº DIRECTION.
*OPEN CIRCUIT IN MAGNETIC CLUTCH.
*MOMENTARY INTERRUPTION OF VEHICLE SPEED SIGNAL.
*SHORT CIRCUIT IN CRUISE CONTROL SW.
*MOTOR DOES NOT OPERATE DESPITE THE MOTOR DRIVE SIGNAL BEING OUTPUT.
B) IF ANY OF THE FOLLOWING CONDITIONS OCCUR DURING CRUISE CONTROL OPERATION, THE SET SPEED IS
ERASED AND THE CRUISE CONTROL IS RELEASED. (THE POWER OF MAGNETIC CLUTCH IS CUT OFF UNTIL
THE SET SW IS ONº AGAIN.)
*WHEN THE VEHICLE SPEED FALLS BELOW THE MINIMUM SPEED LIMIT, APPROX. 40 KM/H (25 MPH)
*WHEN THE VEHICLE SPEED FALLS MORE THAN 16 KM/H (10 MPH) BELOW THE SET SPEED, E.G. ON AN
UPWARD SLOPE.
*WHEN POWER TO THE CRUISE CONTROL SYSTEM IS MOMENTARILY CUT OFF.
8. AUTOMATIC TRANSMISSION CONTROL FUNCTION
*IN OVERDRIVE. IF THE VEHICLE SPEED BECOMES LOWER THAN THE OVERDRIVE CUT SPEED (SET SPEED
MINUS APPROX. 4 KM/H, 2.5 MPH) DURING CRUISE CONTROL OPERATION, SUCH AS DRIVING UP A HILL, THE
OVERDRIVE IS RELEASED AND THE POWER INCREASED TO PREVENT A REDUCTION IN VEHICLE SPEED.
*AFTER RELEASING THE OVERDRIVE, VEHICLE SPEED BECOMES HIGHER THAN THE OVERDRIVE RETURN
SPEED (SET SPEED MINUS APPROX, 2 KM/H, 1.2 MPH) AND THE ECU JUDGES BY THE SIGNALS FROM
POTENTIOMETER OF THE ACTUATOR THAT THE UPWARD SLOPE HAS FINISHED, OVERDRIVE IS RESUMED
AFTER APPROXIMATELY 2 SECONDS.
*DURING CRUISE CONTROL DRIVING, THE CRUISE CONTROL OPERATION SIGNAL IS OUTPUT FROM THE
CRUISE CONTROL ECU TO THE ENGINE CONTROL MODULE. UPON RECEIVING THIS SIGNAL, THE ENGINE
CONTROL MODULE CHANGES THE SHIFT PATTERN TO NORMAL. TO MAINTAIN SMOOTH CRUISE CONTROL
OPERATION (ON A DOWNWARD SLOPE ETC.), LOCK-UP RELEASE OF THE TRANSMISSION WHEN THE IDLING
POINT OF THE THROTTLE POSITION IS ONº IS FORBIDDEN.
C 4 CRUISE CONTROL ACTUATOR
3-4 : APPROX. 38.5 W
C14 CRUISE CONTROL SW [COMB. SW]
15-17 : CONTINUITY WITH THE MAIN SW ON
5-17 : APPROX. 418 W WITH THE CANCEL SW ON
APPROX. 68 W WITH THE RESUME/ACCEL SW ON
APPROX. 198 W WITH THE SET/COAST SW ON
C16 CRUISE CONTROL ECU
14-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
15-GROUND : ALWAYS APPROX. 12 VOLTS
20-GROUND :4 PULSE WITH 1 ROTATION OF ROTOR SHAFT
18-GROUND : APPROX. 418 W WITH THE CANCEL SW ON IN CONTROL SW
APPROX. 198 W WITH THE SET/COAST SW ON IN CONTROL SW
APPROX. 68 W WITH THE RESUME/ACCEL SW ON IN CONTROL SW
13-GROUND : ALWAYS CONTINUITY
SERVICE HINTS

Page 1167 of 1807

TOYOTA SUPRA 1997 Service Repair Manual 178
CRUISE CONTROL
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C424 (2JZ-GTE)D 126 (2JZ-GE)S1129C 426 (2JZ-GE)D 528T225 (2JZ-GTE)
C10A28E2A24 (2JZ-GTE)T 227 (2JZ-GE)
C12B28E 2B26 (2JZ-GE)T 6

Page 1172 of 1807

TOYOTA SUPRA 1997 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

Page 1176 of 1807

TOYOTA SUPRA 1997 Service Repair Manual 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

Page 1184 of 1807

TOYOTA SUPRA 1997 Service Repair Manual 195
CURRENT ALWAYS FLOWS TO TERMINAL 1 OF THE INTEGRATION RELAY THROUGH DOME FUSE.
1. SEAT BELT WARNING SYSTEM
WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS FROM THE GAUGE FUSE TO TERMINAL 7 OF TH

195
CURRENT ALWAYS FLOWS TO TERMINAL 1 OF THE INTEGRATION RELAY THROUGH DOME FUSE.
1. SEAT BELT WARNING SYSTEM
WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS FROM THE GAUGE FUSE TO TERMINAL 7 OF THE
INTEGRATION RELAY. AT THE SAME TIME, CURRENT FLOWS TO TERMINAL 9 OF THE RELAY FROM THE GAUGE
FUSE THROUGH THE SEAT BELT WARNING LIGHT. THIS CURRENT ACTIVATES THE INTEGRATION RELAY AND
CURRENT FLOWING THROUGH THE WARNING LIGHT FLOW FROM TERMINAL 9 OF THE RELAY " TERMINAL 10 "
GROUND, CAUSING THE WARNING LIGHT TO LIGHT UP. A BUCKLE SW OFF SIGNAL IS INPUT TO TERMINAL 8 OF
THE RELAY, THE CURRENT FLOWING TO TERMINAL 7 OF THE RELAY FLOWS THROUGH TERMINAL 10 " GROUND
AND THE SEAT BELT WARNING BUZZER SOUNDS FOR APPROX. 4-8 SECONDS. HOWEVER, IF THE SEAT BELT IS
PUT ON DURING THIS PERIOD (WHILE THE BUZZER IS SOUNDING), SIGNAL INPUT TO TERMINAL 8 OF RELAY
STOPS AND THE CURRENT FLOW FROM TERMINAL 7 OF THE RELAY "TERMINAL 10 "GROUND IS CUT,
CAUSING THE BUZZER TO STOP.
2. UNLOCK WARNING SYSTEM
WITH THE IGNITION KEY INSERTED IN THE KEY CYLINDER (UNLOCK SW ON), THE IGNITION SW STILL OFF AND
DRIVER'S DOOR OPENS (DOOR COURTESY SW ON), WHEN A SIGNAL IS INPUT TO TERMINAL 6 OF THE RELAY, THE
INTEGRATION RELAY OPERATES, CURRENT FLOWS FROM TERMINAL 7 OF THE RELAY "TERMINAL 10 "
GROUND AND UNLOCK WARNING BUZZER SOUNDS.
B6 BUCKLE SW LH
1-2 : CLOSED WITH THE DRIVER'S SEAT BELT IN USE
D10 DOOR COURTESY SW LH
3-2 : CLOSED WITH THE LH DOOR OPEN
U1 UNLOCK WARNING SW
2-1 : CLOSED WITH THE IGNITION KEY IN CYLINDER
INTEGRATION RELAY
10-GROUND : ALWAYS CONTINUITY
6-GROUND : CONTINUITY WITH THE DRIVER'S DOOR OPEN
5-GROUND : CONTINUITY WITH THE IGNITION KEY IN CYLINDER
8-GROUND : CONTINUITY WITH THE DRIVER'S SEAT BELT IN USE
9-GROUND :0 VOLTS WITH THE IGNITION SW ON AND BUCKLE SW OFF
1-GROUND : ALWAYS APPROX. 12 VOLTS
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
B628T629
D1030U129
: 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)
1C20FLOOR NO. 2 WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1E20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1I
1J20COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1K
()
: 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)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IE36LEFT KICK PANEL
BI40LEFT QUARTER PILLAR
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
I738FLOOR NO. 2 WIRE
SYSTEM OUTLINE
SERVICE HINTS

Page 1188 of 1807

TOYOTA SUPRA 1997 Service Repair Manual 205
WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS TO TERMINAL 2 OF THE WASHER MOTOR, TERMINAL 1
OF THE REAR WIPER MOTOR AND RELAY THROUGH THE WIPER FUSE.
1. REAR WIPER NORMAL OPERATION
WITH THE IGN

205
WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS TO TERMINAL 2 OF THE WASHER MOTOR, TERMINAL 1
OF THE REAR WIPER MOTOR AND RELAY THROUGH THE WIPER FUSE.
1. REAR WIPER NORMAL OPERATION
WITH THE IGNITION SW TURNED ON AND REAR WIPER AND WASHER SW TURNED ON, THE CURRENT FLOWING TO
TERMINAL 1 OF THE REAR WIPER RELAY FLOWS TO TERMINAL 3 OF THE RELAY "TERMINAL 1 OF THE REAR
WIPER AND WASHER SW "TERMINAL 16 "TO GROUND. THUS, THE RELAY COIL IS ACTIVATED AND THE
CURRENT TO TERMINAL 1 OF THE RELAY FLOWS TO "TERMIANL LH " TERMINAL LH OF THE REAR WIPER
MOTOR "MOTOR "TO GROUND AND CAUSES THE MOTOR TO OPERATE THE WIPER.
2. REAR WIPER INTERMITTENT OPERATION
WHEN THE IGNITION SW IS ON AND THE REAR WIPER AND WASHER SW IS TURNED TO INT POSITION, CURRENT
FLOWING TO TERMINAL 1 OF THE REAR WIPER MOTOR AND RELAY FLOWS TO TERMINAL 2 OF THE RELAY "
TERMINAL 10 OF THE REAR WIPER AND WASHER SW "TERMINAL 16 "GROUND.
THIS CAUSES THE MOTOR TO OPERATE (THE POINT CHANGES) AND THE INTERMITTENT CIRCUIT OF THE RELAY
OPERATES. INTERMITTENT OPERATION OF THE CIRCUIT IS CONTROLLED BY THE CHANGING AND DISCHARGING
OF THE CONDENSER INSTALLED INSIDE THE RELAY.
3. WASHER OPERATION
WITH THE IGNITION SW TURNED ON AND THE REAR WIPER AND WASHER SW TURNED TO ON POSITION, WHEN
THE WIPER SW IS TURNED FURTHER, THE CURRENT FLOWING TO TERMINAL 2 OF THE WASHER MOTOR FLOWS
TO TERMINAL 3 OF THE MOTOR "TERMINAL 2 OF THE REAR WIPER AND WASHER SW "TERMINAL 16 "TO
GROUND, SO THAT THE WASHER MOTOR ROTATES AND THE WINDOW WASHER EJECTS THE SPRAY, ONLY WHILE
THE SWITCH IS FULLY TURNED.
WHEN THE WIPER SW IS OFF AND THEN TURNED TO WASHER ON (WIPER OFF SIDE), ONLY THE WASHER
OPERATES.
W1 WASHER MOTOR
2-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
3-GROUND : CONTINUITY WITH THE WASHER SW TURNED ON
R15 REAR WIPER MOTOR AND RELAY
1-GROUND : APPROX. 12 VOLTS WITH THE IGNITION SW AT ON POSITION
2-GROUND : CONTINUITY WITH THE REAR WIPER SW AT INT POSITION
3-GROUND : CONTINUITY WITH THE REAR WIPER SW AT ON POSITION
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
C1428W125 (2JZ-GTE)
R1530W127 (2JZ-GE)
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1A20ENGINE ROOM MAIN WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1H
1J20COWL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1K
()
: CONNECTOR JOINING WIRE HARNESS AND WIRE HARNESS
CODESEE PAGEJOINING WIRE HARNESS AND WIRE HARNESS (CONNECTOR LOCATION)
IB236ENGINE ROOM MAIN WIRE AND COWL WIRE (LET KICK PANEL)
IC236FLOOR NO. 2 WIRE AND COWL WIRE (LEFT KICK PANEL)
BM140BACK DOOR NO. 1 WIRE AND FLOOR NO. 2 WIRE (LEFT SIDE OF PACKAGE TRAY TRIM)
BO140BACK DOOR NO. 2 WIRE AND BACK DOOR NO. 1 WIRE (BACK DOOR UPPER LEFT)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
IE36LEFT KICK PANEL
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
E932ENGINE ROOM MAIN WIREE2134ENGINE ROOM MAIN WIRE
SYSTEM OUTLINE
SERVICE HINTS

Page 1193 of 1807

TOYOTA SUPRA 1997 Service Repair Manual 201
THE SRS IS A DRIVER AND PASSENGER PROTECTION DEVICE WHICH HAS A SUPPLEMENTAL ROLE TO THE SEAT
BELTS.
WHEN THE IGNITION SW IS TURNED TO ACC OR ON, THE CURRENT FROM THE CIG FUSE FLOWS TO TERMINAL 16

201
THE SRS IS A DRIVER AND PASSENGER PROTECTION DEVICE WHICH HAS A SUPPLEMENTAL ROLE TO THE SEAT
BELTS.
WHEN THE IGNITION SW IS TURNED TO ACC OR ON, THE CURRENT FROM THE CIG FUSE FLOWS TO TERMINAL 16
OF THE AIRBAG SENSOR ASSEMBLY. ONLY WHEN THE IGNITION SW IS ON DOES THE CURRENT FROM THE IGN
FUSE FLOW TO TERMINAL 15 OF THE AIRBAG SENSOR ASSEMBLY.
IF AN ACCIDENT OCCURS WHILE DRIVING, DECELERATION CAUSED BY A FRONTAL IMPACT IS DETECTED BY THE
SENSOR IN THE AIRBAG SENSOR ASSEMBLY, AND WHEN THE FRONTAL IMPACT EXCEEDS A SET LEVEL (WHEN
THE SAFING SENSOR BUILT INTO THE AIRBAG SENSOR ASSEMBLY IS ON, THE FLOOR SENSOR BUILT INTO THE
AIRBAG SENSOR ASSEMBLY IS ON AND THE AIRBAG SENSOR ASSEMBLY IS ON), THE CURRENT FROM THE CIG OR
THE IGN FUSE FLOWS THROUGH THE AIRBAG SENSOR ASSEMBLY TO TERMINALS 7 AND 3 OF THE AIRBAG
SENSOR ASSEMBLY TO TERMINAL 1 OF THE AIRBAG SQUIB " TERMINAL 2 "TERMINALS 6 AND 2 OF THE
AIRBAG SENSOR ASSEMBLY "THE FLOOR SENSOR BUILT INTO THE AIRBAG SENSOR ASSEMBLY "TERMINAL 9,
TERMINAL 10 OR BODY GROUND "GROUND. WHEN THE SAFING SENSOR BUILT INTO THE AIRBAG SENSOR
ASSEMBLY IS ON, AND FLOOR SENSOR BUILT INTO THE AIRBAG SENSOR ASSEMBLY IS ON, ONE OF THE
ABOVE-MENTIONED CIRCUITS IS ACTIVATED SO THAT THE CURRENT FLOWS TO THE AIRBAG SQUIBS, CAUSING
IT TO OPERATE.
THE AIRBAG STORED INSIDE THE STEERING WHEEL PAD IS INSTANTANEOUSLY EXPANDED TO SOFTEN THE
SHOCK TO A DRIVER.
SIMULTANEOUSLY, THE AIRBAG STORED INSIDE THE PASSENGER'S INSTRUMENT PANEL IS INSTANTANEOUSLY
EXPANDED TO SOFTEN THE SHOCK TO A PASSENGER.
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
A2728D124 (2JZ-GTE)T629
A2828D126 (2JZ-GE)
A3428D528
: 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)
1G20COWL 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)
IF136INSTRUMENT PANEL WIRE AND COWL WIRE (INSTRUMENT PANEL REINFORCEMENT LH)
II138ENGINE 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 WIREI1438INSTRUMENT WIRE
SYSTEM OUTLINE

Page 1201 of 1807

TOYOTA SUPRA 1997 Service Repair Manual 12 3
45678
12A AAA
AA AA34
89
134
8XXX
34X63 X 1
XX 910B R 4
A R 6 AS 8 BS 9 A3 0 A 3 3 J 1GRAY
(
HINT : SEE PAGE 7)
(
W/ WOOFER)
BLACK
3 X 1
XX910B S 9 (
W/O WOOFER)
212
AUTO ANTENNA
A30 AUTO ANTENNA

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