1986 TOYOTA SUPRA ad blue

(d) Check the valve overall length.
Standard overall length:
Intake
98.29±98.79 mm (3.8697±3.8894 in.)
Exhaust
98.84±99.34 mm (3.8913±3.9110 in.)
Minimum overall length:
Intake
98.19 mm (3.8657 in.)
Exhaust
98.74 mm (3.8874 in.)
If the overall length is less than minimum, replace the valve.
(e) Check the surface of the valve stem tip for wear.
If the valve stem tip is worn, resurface the tip with a grinder
or replace the valve.
NOTICE: Do not grind off more than the minimum overall
length.
8. INSPECT AND CLEAN VALVE SEATS
(a) Using a 45° carbide cutter, resurface the valve seats.
Remove only enough metal to clean the seats.
(b) Check the valve seating position.
Apply a thin coat of prussian blue (or white lead) to the valve
face. Lightly press the valve against the seat. Do not rotate
the valve.
(c) Check the valve face and seat for the following:
wIf blue appears 360° around the face, the valve is
concentric. If not, replace the valve.
wIf blue appears 360° around the valve seat, the guide
and face are concentric. If not, resurface the seat.
wCheck that the seat contact is in the middle of the valve
face with the following width:
Intake
1.0±1.4 mm (0.039±0.055 in.)
Exhaust
1.2±1.6 mm (0.047±0.063 in.)
If not, correct the valve seats as follows:
wIf the seating is too high on the valve face, use 15° and
45° cutters to correct the seat.
± ENGINEENGINE MECHANICALEG±55

wIf the seating is too low on the valve face, use 60° and
45° cutters to correct the seat.
(d) Hand±lap the valve and valve seat with an abrasive
compound.
(e) After hand±lapping, clean the valve and valve seat.
9. INSPECT VALVE SPRINGS
(a) Using a steel square, measure the deviation of the valve
spring.
Maximum deviation:
2.0 mm (0.079 in.)
If deviation is greater than maximum, replace the valve
spring.
(b) Using vernier calipers, measure the free length of the valve
spring.
Free length:
Blue painted mark
41.74 mm (1.6433 in.)
Yellow painted mark
41.70 mm (1.6417 in.)
If the free length is not as specified, replace the valve spring.
(c) Using a spring tester, measure the tension of the valve spring
at the specified installed length.
Installed tension:
186±206 N (19.0±21.0 kgf, 42±46 lbf) at 34.5 mm
(1.358 in.)
If the installed tension is not as specified, replace the valve
spring. EG±56
± ENGINEENGINE MECHANICAL

 
 
 
Valve guide
Bushing 
 
 
Inside diameter
Outside diameter (for repair part) STD
O/S 0.05 
 
 
6.010±6.030 mm (0.2366±0.2374 in.)
11.033±11.044 mm (0.4344±0.4348 in.)
11.083±11.094 mm (0.4363±0.4368 in.)
 
 
 
 
 
 
 
 
 
 
 
Valve 
 
 
 
 
 
 
 
 
 
 
Valve overall length STD Intake
Exhaust
Minimum Intake
Exhaust
Valve face angle
Stem diameter Intake
Exhaust
Stem oil clearance STD Intake
Exhaust
Maximum Intake
Exhaust
Margin thickness STD
Minimum 
 
 
 
 
 
 
 
 
 
 
98.29±98.79 mm (3.8697±3.8894 in.)
98.84±99.34 mm (3.8913±3.9110 in.)
98.19 mm (3.8657 in.)
98.74 mm (3.8874 in.)
44.55
5.970±5.985 mm (0.2350±0.2356 in.)
5.965±5.980 mm (0.2348±0.2354 in.)
0.025±0.060 mm (0.0010±0.0024 in.)
0.030±0.065 mm (0.0012±0.0026 in.)
0.08 mm (0.0031 in.)
0.10 mm (0.0039 in.)
0.8±1.2 mm (0.031±0.047 in.)
0.5 mm (0.020 in.)
 
 
 
 
Valve spring
 
 
 
 
Deviation Maximum
Free length Blue painted mark
Yellow painted mark
Installed tension at 34.5 mm (1.358 in.)
 
 
 
 
2.0 mm (0.079 in.)
41.74 mm (1.6433 in.)
41.70 mm (1.6417 in.)
186±206 N (19.0±21.0 kgf, 42±46 lbf)
 
 
 
 
Valve lifter 
 
 
 
Lifter diameter
Lifter bore diameter
Oil clearance STD
Maximum 
 
 
 
30.966±30.976 mm (1.2191±1.2195 in.)
31.000±31.016 mm (1.2205±1.2211 in.)
0.024±0.050 mm (0.0009±0.0020 in.)
0.07 mm (0.0028 in.)
 
 
 
 
 
 
 
 
 
Camshaft 
 
 
 
 
 
 
 
 
Thrust clearance STD
Maximum
Cam lobe height STD Intake
Exhaust
Maximum Intake
Exhaust
Journal diameter
Journal oil clearance STD
Maximum
Circle runout Maximum 
 
 
 
 
 
 
 
 
0.080±0.190 mm (0.0031±0.0075 in.)
0.30 mm (0.0118 in.)
44.570±44.670 mm (1.7547±1.7587 in.)
44.770±44.870 mm (1.7626±1.7665 in.)
44.42 mm (1.7488 in.)
44.62 mm (1.7567 in.)
28.949±28.965 mm (1.1397±1.1404 in.)
0.035±0.072 mm (0.0014±0.0028 in.)
0.10 mm (0.0039 in.)
0.08 mm (0.0031 in.)
 
 Air intake
chamber 
 Warpage Maximum 
 0.15 mm (0.0059 in.)
 
 
 
Manifold 
 
 
Warpage Maximum Intake
Exhaust 2JZ±GE
2JZ±GTE 
 
 
0.15 mm (0.0059 in.)
0.50 mm (0.0196 in.)
0.80 mm (0.0315 in.)
 
 
 
 
 
Cylinder block 
 
 
 
 
Cylinder head surface warpage Maximum
Cylinder bore diameter STD
Maximum
Main bearing bolt diameter STD
Minimum 
 
 
 
 
0.07 mm (0.0028 in.)
86.000±86.013 mm (3.3858±3.3863 in.)
86.02 mm (3.3866 in.)
9.96±9.97 mm (0.3921±0.3925 in.)
9.7 mm (0.382 in.)
 
 
 
 
Connecting
Rod 
 
 
 
Thrust clearance STD
Maximum
Connecting bolt diameter STD
Minimum 
 
 
 
0.250±0.402 mm (0.0098±0.0158 in.)
0.50 mm (0.0197 in.)
8.1±8.3 mm (0.319±0.327 in.)
8.0 mm (0.315 in.)
EG±136± ENGINEENGINE MECHANICAL

(b) Blow air (4.71 kPa (0.048 kgf/cm2, 0.68 psi)) into port A, and
check that air does not flow from the other ports.
(c) Blow air (4.71 kPa (0.048 kgf/cm
2, 0.68 psi)) into port B, and
check that air does not flow from the other ports.
If operation is not as specified, replace the charcoal canister.
4. CLEAN FILTER IN CANISTER
Clean the filter by blowing 294 kPa (3 kgf/cm
2, 43 psi) of com-
pressed air into port C while holding port A and B closed.
NOTICE:

Do not attempt to wash the canister.

No activated carbon should come out.
5. REINSTALL CHARCOAL CANISTER
VSV INSPECTION
(See VSV for EVAP in SFI System)
CHECK VALVE INSPECTION
1. REMOVE CHECK VALVE
2. INSPECT CHECK VALVE
(a) Check that air flows from the blue port to the black port.
(b) Check that air does not flow from the black port to the blue
port.
If operation is not as specified, replace the check valve.
3. REINSTALL CHECK VALVE
HINT: Install the check valve with the black port facing the
purge port side of the throttle body.
± ENGINEEMISSION CONTROL SYSTEMS (2JZ±GTE)EG±179

(b) Blow air (4.71 kPa (0.048 kgf/cm2, 0.68 psi)) into port A, and
check that air does not flow from the other ports.
If operation is not as specified, replace the charcoal canister.
4. CLEAN FILTER IN CANISTER
Clean the filter by blowing 294 kPa (3 kgf/cm
2, 43 psi) of com-
pressed air into port B while holding port A closed.
NOTICE:

Do not attempt to wash the canister.

No activated carbon should come out.
5. REINSTALL CHARCOAL CANISTER
VSV INSPECTION
(See VSV for EVAP in SFI System)
CHECK VALVE INSPECTION
1. REMOVE CHECK VALVE
2. INSPECT CHECK VALVE
(a) Check that air flows from the blue port to the black port.
(b) Check that air does not flow from the black port to the blue
port.
If operation is not as specified, replace the check valve.
3. REINSTALL CHECK VALVE
HINT: Install the check valve with the black port facing the
port P side of the throttle body.
± ENGINEEMISSION CONTROL SYSTEMS (2JZ±GE)EG±167

A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
5
:System Title
:Indicates a Relay Block. No shading is used and only
the Relay Block No. is shown to distinguish it from the
J/B.
Example: Indicates Relay Block No. 1.
:Indicates the connector to be connected to a part (the
numeral indicates the pin No.)
Explanation of pin use.
The pins shown are only for the highest grade, or only
include those in the specification.
:Connector Color
Connectors not indicated are milky white in color.
:( ) is used to indicate different wiring and connector,
etc. when the vehicle model, engine type, or
specification is different.
:Indicates related system.
:Indicates the wiring harness and wiring harness
connector. The wiring harness with male terminal is
shown with arrows ( ).
Outside numerals are pin numbers.
The first letter of the code for each wiring harness and
wiring harness connector(s) indicates the component's
location, e.g., ªEº for the Engine Compartment, ªIº for the
Instrument Panel and Surrounding area, and ªBº for the
Body and Surrounding area.
When more than one code has the first and second
letters in common, followed by numbers (e.g., IH1, IH2),
this indicates the same type of wiring harness and
wiring harness connector.
:Represents a part (all parts are shown in sky blue). The
code is the same as the code used in parts position.
:Junction Block (The number in the circle is the J/B No.
and the connector code is shown beside it). Junction
Blocks are shaded to clearly separate them from other
parts (different junction blocks are shaded differently for
further clarification).
3B indicates
that it is inside
Junction Block
No. 3.
Example::Indicates the wiring color.
Wire colors are indicated by an alphabetical code.
B = Black L = Blue R = Red
BR = Brown LG = Light Green V = Violet
G = Green O = Orange W = White
GR = Gray P = Pink Y = Yellow
The first letter indicates the basic wire color and the
second letter indicates the color of the stripe.
Example: L ± Y
(Blue) (Yellow)
:Indicates a wiring Splice Point (Codes are ªEº for the
Engine Room, ªIº for the Instrument Panel, and ªBº for
the Body).
Example:
The Location of Splice Point I 5 is indicated by the
shaded section.
:Page No.
:Indicates a shielded cable.
:Indicates a ground point.
The first letter of the code for each ground point(s)
indicates the component's location, e.g., ªEº for the
Engine Compartment, ªIº for the Instrument Panel and
Surrounding area, and ªBº for the Body and
Surrounding area.
:Indicates the pin number of the connector.
The numbering system is different for female and male
connectors.
Example: Numbered in order
from upper left to
lower rightNumbered in order
from upper right to
lower left
:When 2 parts both use one connector in common, the
parts connector name used in the wire routing section
is shown in square brackets [ ].

11 5
CURRENT IS APPLIED AT ALL TIMES THROUGH THE STOP FUSE TO TERMINAL 2 OF THE STOP LIGHT SW.
WHEN THE IGNITION SW IS TURNED ON, CURRENT FLOWS FROM THE GAUGE FUSE TO TERMINAL 8 OF THE LIGHT FAILURE SENSOR, AND ALSO
FLOWS THROUGH THE REAR LIGHT WARNING LIGHT TO TERMINAL 4 OF THE LIGHT FAILURE SENSOR.
STOP LIGHT DISCONNECTION WARNING
WHEN THE IGNITION SW IS TURNED ON AND THE BRAKE PEDAL IS PRESSED (STOP LIGHT SW ON), IF THE STOP LIGHT CIRCUIT IS OPEN, THE
CURRENT FLOWING FROM TERMINAL 7 OF THE LIGHT FAILURE SENSOR TO TERMINAL 2 CHANGES, SO THE LIGHT FAILURE SENSOR DETECTS THE
DISCONNECTION AND THE WARNING CIRCUIT OF THE LIGHT FAILURE SENSOR IS ACTIVATED.
AS A RESULT, THE CURRENT FLOWS FROM TERMINAL 4 OF THE LIGHT FAILURE SENSOR " TERMINAL 11 " GROUND AND TURNS THE REAR LIGHT
WARNING LIGHT ON. BY PRESSING THE BRAKE PEDAL, THE CURRENT FLOWING TO TERMINAL 8 OF THE LIGHT FAILURE SENSOR KEEPS THE
WARNING CIRCUIT ON HOLDING AND THE WARNING LIGHT ON UNTIL THE IGNITION SW IS TURNED OFF.
S11 STOP LIGHT SW
2±1 : CLOSED WITH BRAKE PEDAL DEPRESSED
L 2 LIGHT FAILURE SENSOR
2, 7±GROUND : APPROX. 12 VOLTS WITH STOP LIGHT SW ON
4, 8±GROUND : APPROX. 12 VOLTS WITH IGNITION SW AT ON POSITION
11±GROUND : ALWAYS CONTINUOUS
: PARTS LOCATION
CODESEE PAGECODESEE PAGECODESEE PAGE
H1430R 930S1129
L 230R1030T 629
: JUNCTION BLOCK AND WIRE HARNESS CONNECTOR
CODESEE PAGEJUNCTION BLOCK AND WIRE HARNESS (CONNECTOR LOCATION)
1C20FLOOR NO. 2 WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1E20INSTRUMENT PANEL WIRE AND J/B NO. 1 (LEFT KICK PANEL)
1H20COWL 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)
IE136INSTRUMENT PANEL WIRE AND FLOOR NO. 2 WIRE (LEFT KICK PANEL)
BM140BACK DOOR NO. 1 WIRE AND FLOOR NO. 2 WIRE (LEFT SIDE OF PACKAGE TRAY TRIM)
B0140BACK DOOR NO. 2 WIRE AND BACK DOOR NO. 1 WIRE (BACK DOOR UPPER LEFT)
: GROUND POINTS
CODESEE PAGEGROUND POINTS LOCATION
BI40LEFT QUARTER PILLAR
BJ40LOWER BACK PANEL CENTER
: SPLICE POINTS
CODESEE PAGEWIRE HARNESS WITH SPLICE POINTSCODESEE PAGEWIRE HARNESS WITH SPLICE POINTS
B 340FLOOR NO 2 WIREB 740FLOOR NO. 2 WIRE
B 540FLOOR NO. 2 WIRE
1 2X 4 2 X
X7 8 X11X
X
3
5X
3
512
1
XXX H14 L 2 R 9 R10 S11
T6BLUE
18
SYSTEM OUTLINE
SERVICE HINTS

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