1986 TOYOTA SUPRA engine oil

RADIATOR REMOVAL
Installation is in the reverse order of removal.
1. REMOVE ENGINE UNDER COVER
INSTALLATION HINT: Start the engine, and check for cool-
ant and A/T fluid leaks.
2. REMOVE BATTERY AND BATTERY TRAY
3. DRAIN ENGINE COOLANT
4. 2JZ±GTE:
REMOVE NO.2 AIR TUBE
5. REMOVE NO.2 FAN SHROUD
(a) Remove the 2 clips.
(b) Disconnect the claw of the No.2 fan shroud from the hook of
the No.1 fan shroud, and remove the No.2 fan shroud.
6. REMOVE AIR CLEANER DUCT
7. 2JZ±GTE:
REMOVE NO.5 AIR HOSE
8. REMOVE LH HEADLIGHT BEAM ANGLE GAUGE
Remove the screw and beam angle gauge.
9. DISCONNECT HOSES FROM RADIATOR
Disconnect these hoses from the radiator:
(1) Reservoir inlet hose
(2) Upper radiator hose
(3) Lower radiator hose
(4) A/T:
2 oil cooler hoses
Plug the hose ends.
INSTALLATION HINT: Check the A/T fluid level.
(See item 21 in Maintenance) EG±346
± ENGINECOOLING SYSTEM

2. ASSEMBLE SST
SST 09230±01010
(a) Install the claw to the overhaul handle, inserting it in the hole
in part ºAº as shown in the installation.
(b) While gripping the handle, adjust the stopper bolt so that
dimension ºBº shown in the diagram is 0.2±0.5 mm
(0.008±0.020 in.).
NOTICE: If this adjustment is not done, the claw may be dam-
aged.
3. UNCAULK LOCK PLATES
Using SST to release the caulking, squeeze the handle until
stopped by the stopper bolt.
SST 09230±01010
4. REMOVE TANKS AND O±RINGS
(a) Lightly tap the radiator hose inlet (or outlet) with a soft±faced
hammer and remove the tank.
(b) Remove the O±ring.
5. A/T:
REMOVE OIL COOLER FROM LOWER TANK
(a) Remove the inlet pipes.
HINT: Make a note of the direction to face the pipes.
(b) Remove the nuts, plate washers and oil cooler.
(c) Remove the O±rings from the oil cooler.
± ENGINECOOLING SYSTEMEG±349

RADIATOR ASSEMBLY
1. A/T:
INSTALL OIL COOLER TO LOWER TANK
(a) Clean the O±ring contact surface of the lower tank and oil
cooler.
(b) Install new O±ring (1) to the oil cooler (2).
(c) Install the oil cooler (2) to the lower tank (3).
(d) Install the plate washers (4), and nuts (5).
Torque: 8.3 NVm (85 kgfVcm, 74 in.Vlbf)
(e) Install the inlet pipes (6).
Torque: 15 NVm (150 kgfVcm, 11 ftVlbf)
HINT: Face the inlet pipes in the same direction they were be-
fore disassembly.
2. INSPECT LOCK PLATE
Inspect the lock plate for damage.
HINT:
wIf the sides of the lock plate groove are deformed,
reassembly of the tank will be impossible.
wTherefore, first correct any deformation with pliers or
similar object. Water leakage will result if the bottom of
the lock plate groove is damaged or dented. Therefore,
repair or replace if necessary.
3. INSTALL NEW O±RINGS AND TANKS
(a) After checking that there are no foreign objects in the lock
plate groove, install the new O±ring without twisting it.
HINT: When cleaning the lock plate groove, lightly rub it with
sand paper without scratching it.
(b) Install the tank without damaging the O±ring.
(c) Tap the lock plate with a soft±faced hammer so that there is
no gap between it and the tank. EG±350
± ENGINECOOLING SYSTEM

4. ASSEMBLE SST
SST 09230±01010,
09231±14010 (Punch (2JZ±GE only))
(a) Install the punch assembly to the overhaul handle, inserting
it in the hole in part ºAº as shown in the illustration.
(b) While gripping the handle, adjust the stopper bolt so that
dimension ºBº shown in the diagram.
Dimension ºBº:
2JZ±GE
8.4 mm (0.34 in)
2JZ±GTE
7.7 mm (0.31 in)
5. CAULK LOCK PLATE
(a) Lightly press SST against the lock plate in the order shown
in the illustration. After repeating this a few times, fully caulk
the lock plate by squeezing the handle until stopped by the
stopper plate.
SST 09230±01010
HINT:
wDo not stake the areas protruding around the pipes,
brackets or tank ribs.
wThe points shown in the rib sides and oil cooler near
here cannot be staked with SST. Use a plier or similar
object and be careful not to damage the core plates.
± ENGINECOOLING SYSTEMEG±351

Engine Coolant Temperature (ECT)
Switch
ECT SWITCH INSPECTION
1. REMOVE ENGINE UNDER COVER
2. DRAIN ENGINE COOLANT
3. REMOVE ECT SWITCH
(a) Disconnect the ECT switch connector.
(b) Remove the ECT switch.
(c) Remove the O±ring from the ECT switch.
4. INSPECT ECT SWITCH
(a) Usin g an oh mme te r, ch e ck th a t th e re is no co n tin u ity
between the terminals when the coolant temperature is
above 97°C (207°F).
(b) Using an ohmmeter, check that there is continuity between
the terminals when the coolant temperature is below 88°C
(190°F).
If continuity is not as specified, replace the switch.
5. REINSTALL ECT SWITCH
(a) Install a new O±ring to the ECT switch.
(b) Apply soapy water to the O±ring.
(c) Install the ECT switch.
Torque: 7.4 NVm (75 kgfVcm, 65 in.Vlbf)
(d) Connect the ECT switch connector.
6. REFILL WITH ENGINE COOLANT
7. START ENGINE AND CHECK FOR LEAKS
8. REINSTALL ENGINE UNDER COVER
No.1 Radiator Fan Relay
(ºRADIATOR FAN RELAYº)
RADIATOR FAN RELAY INSPECTION
1. w/ Auto Spoiler:
REMOVE LH HEADLIGHT
2. w/o Auto Spoiler:
REMOVE ENGINE UNDER COVER
3. REMOVE RADIATOR FAN RELAY
4. INSPECT RADIATOR FAN RELAY
A. Inspect relay continuity
(a) Using an ohmmeter, check that there is continuity between
terminals 3 and 4.
(b) Check that there is no continuity between terminals 1 and 2.
If continuity is as specified, replace the relay. EG±356
± ENGINECOOLING SYSTEM

B. Inspect relay operation
(a) Apply battery voltage across terminals 3 and 4.
(b) Using an ohmmeter, check that there is continuity between
terminals 1 and 2.
If operation is not as specified, replace the relay.
5. REINSTALL RADIATOR FAN RELAY
6. w/ Auto Spoiler:
REINSTALL LH HEADLIGHT
7. w/o Auto Spoiler:
REINSTALL ENGINE UNDER COVER
No.2 Radiator Fan Relay
(ºA.B.S. (TRAC) RELAYº)
RADIATOR FAN RELAY INSPECTION
1. w/ Auto Spoiler:
REMOVE LH HEADLIGHT
2. w/o Auto Spoiler:
REMOVE ENGINE UNDER COVER
3. REMOVE RADIATOR FAN RELAY
4. INSPECT RADIATOR FAN RELAY
A. Inspect relay continuity
(a) Using an ohmmeter, check that there is continuity between
terminals 1 and 6.
(b) Check that there is continuity between terminals 3 and 5.
(c) Check that there is no continuity between terminals 2 and 5.
If continuity is not as specified, replace the relay.
B. Inspect relay operation
(a) Apply battery voltage across terminals 1 and 6.
(b) Usin g an oh mme te r, ch e ck th a t th e re is no co n tin u ity
between terminals 3 and 5.
(c) Check that there is continuity between terminals 2 and 5.
If operation is not as specified, replace the relay.
5. REINSTALL RADIATOR FAN RELAY
6. w/ Auto Spoiler:
REINSTALL LH HEADLIGHT
7. w/o Auto Spoiler:
REINSTALL ENGINE UNDER COVER
± ENGINECOOLING SYSTEMEG±357

SERVICE SPECIFICATIONS
SERVICE DATA
 
 
Thermostat 
 
Valve opening temperature
Valve lift at 95°C (203°F) 
 
80±84°C (176±183°F)
8.5 mm (0.335 in.) or more
 
 
 
Radiator cap 
 
 
Relief valve opening pressure STD
Minimum 
 
 
93±123 kPa
(0.95±1.25 kgf/cm2, 13.5±17.8 psi)
78 kPa (0.8 kgf/cm
2, 11.4 psi)
 
 
Electric
cooling fan 
 
Rotating amperage 
 
2.5±4.5 A
TORQUE SPECIFICATIONS
 Part tightened NVm kgfVcm ftVlbf
 Engine drain plug x Cylinder block 29 300 22
 Fan x Fluid coupling 7.4 75 65 in.Vlbf
 Water pump x Cylinder block 21 210 15
 Water pump x No.2 water bypass pipe 21 210 15
 Generator x Water pump 37 380 27
 Generator x Cylinder block 37 380 27
 Water bypass outlet x Cylinder head (2JZ±GE) 8.8 90 78 in.Vlbf
 Water outlet x Cylinder head (2JZ±GTE) 21 210 15
 Water inlet x Water pump (2JZ±GE) 8.8 90 78 in.Vlbf
 Water inlet x Water pump (2JZ±GTE) 21 210 15 Upper radiator support x Body 15 155 11 ECT switch x Radiator (2JZ±GTE) 7.4 75 65 in.Vlbf Fluid coupling x Water pump 16 165 12 Oil cooler x Radiator lower tank (A/T) 8.3 85 74 in.Vlbf Oil cooler x Oil cooler pipe (A/T) 15 150 11
EG±358± ENGINECOOLING SYSTEM

24
ELECTRICAL WIRING ROUTING
Position of Parts in Engine Compartment
[2JZ±GTE]
A 1 A/C Ambient Temp. Sensor E 4 Engine Coolant Temp. Sender (Water Temp. Sender)
A 2 A/C Condenser Fan Motor E 5 Engine Coolant Temp. SW (Water Temp. SW)
A 3 A/C Triple Pressure SW E 6 Engine Hood Courtesy SW
(A/C Dual and Single Pressure SW) E 7 Engine Oil Level Sensor
A 4 A/C Magnetic Clutch and Lock Sensor
A 5 A/T Fluid Temp. Sensor F 1 Front Airbag Sensor LH
A 6 ABS Actuator F 2 Front Airbag Sensor RH
A 7 ABS Actuator F 3 Front Fog Light and Parking Light LH
A 10 ABS Speed Sensor Front LH F 4 Front Fog Light and Parking Light RH
A 11 ABS Speed Sensor Front RH F 5 Front Side Marker Light LH
F 6 Front Side Marker Light RH
B 1 Back±Up Light SW (for M/T) F 7 Front Turn Signal Light LH
B 2 Brake Fluid Level Warning SW F 8 Front Turn Signal Light RH
F 9 Front Wiper Motor
C 1 Camshaft Position Sensor No. 1
C 2 Camshaft Position Sensor No. 2 G 1 Generator (Alternator)
C 3 Crankshaft Position Sensor G 2 Generator (Alternator)
C 4 Cruise Control Actuator
H 1 Headlight Hi LH
D 1 Data Link Connector 1 (Check Connector) H 2 Headlight Hi RH
D 2 Daytime Running Light Relay No. 3 H 3 Headlight Lo LH
D 3 Daytime Running Light Relay No. 3 H 4 Headlight Lo RH
H 5 Heated Oxygen Sensor (Main)
E 1 EGR Gas Temp. Sensor H 8 Horn LH
E 2 Electronically Controlled Transmission Solenoid H 9 Horn RH
E 3 Engine Coolant Temp. Sensor (EFI Water Temp. Sensor)