1986 TOYOTA SUPRA wheel

TURBOCHARGER SYSTEM (2JZ±GTE)
PREPARATION
SST (SPECIAL SERVICE TOOLS)
09992±00241 Turbocharger Pressure Gauge
EQUIPMENT
 
 
Dial indicator 
 
Impeller wheel
 
 
Torque wrench 
 
COOLANT
 Item Capacity Classification
 
 Engine coolant (w/ Heater) M/T
A/T 
  9.5 liters (10.0 US qts. 8.4 lmp. qts)
9.4 liters (9.9 US qts, 8.3 lmp. qts) 
 Ethylene±glycol base
EG±140± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)

PRECAUTION
1. Do not stop the engine immediately after pulling a trailer
or after high speed or uphill driving. Idle the engine for
20±120 seconds, depending on how hard the vehicle has
been driven.
2. Avoid sudden acceleration or racing immediately after
starting a cold engine.
3. Do not run the engine with air cleaner removed, as this
may cause foreign material to enter and damage the
impeller wheel operating at high speed.
4. If a turbocharger is found to be defective and must be
replaced, check for the cause, and repair or replace the
following items as necessary:
wEngine oil level and quality
wConditions under which the turbocharger was used
wOil lines leading to the turbocharger
5. Use caution when removing and reinstalling the
turbocharger assembly. Do not drop it or knock it against
anything or grasp it by easily±deformed parts, such as
the actuator or rod, when moving it.
6. Use caution when removing and reinstalling the exhaust
gas control valve assembly. Do not drop it or knock it
against anything or grasp it by easily±deformed parts,
such as the actuator or rod, when moving it. The control
valve is ceramic.
7. Before removing the turbocharger, plug the intake and
exhaust ports and oil inlet to prevent entry of dirt or other
foreign material.
8. If replacing the turbocharger, check for accumulation of
sludge particles in the oil pipes, and if necessary,
replace the oil pipes.
9. Completely remove the gasket adhered to the lubrication
oil pipe flange and turbocharger oil flange.
10. Whe n re pla c ing bolt or nuts , us e only authorize d
replacement parts to prevent breakage or deformation.
11. If replacing the turbocharger, pour approx. 20 cm
3 (1.2 cu
in.) of fresh oil into the turbocharger oil inlet and turn the
impeller wheel by hand to spread oil to the bearing.
12. If overhauling or replacing the engine, cut the fuel supply
after reassembly and crank the engine for 30 seconds to
distribute oil throughout the engine. Then allow the
engine to idle for 60 seconds.
± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)EG±141

1. TURBOCHARGING HEAT INSULATOR
RESONANCE
2. EXHAUST PIPE LEAKING OR
VIBRATING
3. ERRATIC TURBOCHARGER
OPERATION
ABNORMAL NOISE
(Possible Cause) (Check Procedure and Correction Method)
Check for loose, improperly installed or deformed
insulator mounting bolts, and repair or replace as
necessary.
Check for deformed exhaust pipe, loose mounting
bolts or damaged gasket, and repair or replace as
necessary.
Refer to item 6 of INSUFFICIENT ACCELERATION,
LACK OF POWER OR EXCESSIVE FUEL
CONSUMPTION.
EXCESSIVE OIL CONSUMPTION OR WHITE EXHAUST
(Possible Cause) (Check Procedure and Correction Method)
FAULTY TURBOCHARGER SEALCheck for oil leakage in exhaust system.
wRemove the turbine elbow from the turbochar-
ger and check for excessive carbon deposits on
the turbine wheel. Excessive carbon deposits in-
dicate a faulty turbocharger.
Check for oil leakage in intake air system.
wCheck for axial and radial play of turbine shaft
and replace the turbocharger if necessary.
(See page EG±158)
Maximum axial play : 0.110 mm (0.0045 in.)
Maximum radial play : 0.162 mm (0.0064 in.)
NOTICE: Some oil mist in the blowby from the
PCV is normal.
Do not mistake it for an oil leak from the
turbocharger.
± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)EG±143

TURBOCHARGER COMPONENTS
INSPECTION
Turbochargers
1. INSPECT TURBINE SHAFT ROTATION
Grasp the edge of the turbine wheel and turn it. Check that
the impeller wheel turns smoothly.
If the impeller wheel does not turn or if it turns with a drag, re-
place the turbocharger assembly.
2. INSPECT AXIAL PLAY OF TURBINE SHAFT
(a) Using a dial indicator, insert the needle of the dial indicator
into the air tube side.
(b) Move the turbine shaft in an axial direction, measure the axial
play of the turbine shaft.
Maximum axial play:
0.110 mm (0.0045 in.)
If the axial play is greater than maximum, replace the turbo-
charger assembly.
3. INSPECT RADIAL PLAY OF TURBINE SHAFT
(a) Using a dial indicator, insert the needle of the dial indicator
into the oil outlet hole and set it in the center of the turbine
shaft.
(b) Move the turbine shaft in a radial direction, measure the
radial play of the turbine shaft.
Maximum radial play:
0.162 mm (0.0064 in.)
If the axial play is greater than maximum, replace the turbo-
charger assembly.
4. INSPECT WASTE GATE VALVE OPERATION
(a) Disconnect the actuator air hose from the housing, and plug
the hose end.
(b) Using SST, apply approx. 120 kPa (1.22 kgf/cm
2, 17.4 psi) of
pressure to the actuator.
SST 09992±00241
(c) Move the actuator push rod, and check that the waste gate
valve is open.
If operation is not as specified, replace the No.1 turbocharger
assembly.
NOTICE: Never apply more than 187 kPa (1.91 kgf/cm2, 27.2
psi) of pressure to the actuator.
(d) Reconnect the actuator air hose to the housing. EG±158
± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)

SERVICE SPECIFICATIONS
SERVICE DATA
 
 
 
Turbocharger 
 
 
Turbocharging pressure
Impeller wheel axial play Limit
Impeller wheel radial play Limit 
 
 
61±75 kPa (0.62±0.76 kgf/cm2, 8.8±10.8 psi)
0.162 mm (0.0064 in.)
0.110 mm (0.0045 in.)
TORQUE SPECIFICATIONS
 
 Part tightened 
 NVm 
 kgfVcm 
 ftVlbf
 Turbocharger x Turbine outlet elbow 25 250 18
 Turbo water pipe x Turbocharger 8.8 90 78 in.Vlbf
 Side bearing housing plate x Turbocharger 8.8 90 78 in.Vlbf
 No.2 air tube x No.2 turbocharger 21 210 15 
 Turbocharger x Exhaust manifold
 
 54
 
 550
 
 40
 Turbo oil pipe x Turbocharger 21 210 15
 Turbo oil pipe x Cylinder block 39 400 29
 Turbocharger stay x Turbocharger 43 440 32 
 Turbocharger stay x Cylinder block
 
 43
 
 440
 
 32
 Exhaust gas control valve x Turbine outlet elbow 69 700 51
 Main heated oxygen sensor x Exhaust gas control valve 20 200 14
 Exhaust gas control valve stay x Exhaust gas control valve 43 440 32 
 Exhaust gas control valve stay x Cylinder block
 
 43
 
 440
 
 32
 Exhaust bypass pipe x Turbine outlet elbow 25 250 18
 Exhaust bypass pipe x Exhaust gas control valve 25 250 18
 Intake air control valve x No.2 turbocharger 21 210 15 
No.4 air tube x No.1 turbocharger 
21 
210 
15 
 No.1 air tube x No.1 turbocharger
 
 21
 
 210
 
 15
 No.2 front exhaust pipe x Exhaust gas control valve 62 630 46
 Front exhaust pipe x No.2 front exhaust pipe 58 590 43
 Pipe support bracket x Transmission 43 440 32 
 
 
Upper front crossmember extension x Front suspension Bolt
Nut
 
 
 
29
33
 
 
 
300
340
 
 
 
22
25
 
 
Front lower arm bracket stay x Front suspension Bolt
Nut 
 
44
59 
 
450
600 
 
33
43
 CAC duct x CAC 4.9 50 43 in.Vlbf
 CAC x Body 13 135 10
EG±162± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)

 Symbols (Terminals No.) STD Voltage (V) Condition
 EGR (B75) E01 (B80) Below 2.0 Idling
 EGR (B75)±E01 (B80) 9 ~ 14 Engine speed at 3,500 rpm
 VG (B66)±E21 (B28) 0.7 ~ 1.7 Idling
 
 
ISC1 (B35), ISC2 (B34)
Ð E01 (B80)
ISC3 (B33), ISC4 (B32) 
 
Pulse generation
(See page EG±586) 
 Idling when A/C switch ON or OFF
 
VF1 (B29)±E1 (B69) 

1.8 ~ 3.2 

Maintain engine speed at 2,500 rpm for 2
minutes after warming up then return to Idling
 
 OX1 (B48), OX2 (B47)±E1 (B69)
 
 Pulse generation
(See page EG±529)
 
 Maintain engine speed at 2,500 rpm for 2
minutes after warming up
 
HT1 (B71) HT2 (B72) E01 (B80)
 Below 3.0 Idling HT1 (B71), HT2 (B72)±E01 (B80) 9 ~ 14 IG switch ON 
 KNK1 (B50), KNK2 (B49)±E1 (B69)
 
 Pulse generation
(See page EG±563) 
 Idling
 
 
NSW (B76) E1 (B69)
 
 9 ~ 14
 
 IG switch ON
Other shift position in ºPº, ºNº position
 
 
NSW (B76)±E1 (B69) 
 0 ~ 3.0
 
 IG switch ON
Shift position in ºPº, ºNº position
 
 SP1 (A2)±E1 (B69)
 
 
Pulse generation
(See page EG±556) 
 
IG switch ON
Rotate driving wheel slowly
 TE1 (A20)±E1 (B69) 9 ~ 14 IG switch ON
 TE2 (A19)±E1 (B69) 9 ~ 14 IG switch ON
 W (A6)±E1 (B69) 9 ~ 14 Idling
  0 ~ 3.0 IG switch ON
 OD1 (A12)±E1 (B69) 9 ~ 14 IG switch ON
 A/C (A34)±E1 (B69) 7.5 ~14 A/C switch OFF
  0 ~ 1.5 A/C switch ON (At idling)
 ACMG (A23)±E1 (B69) 0 ~ 3.0 A/C switch ON (At idling)
  9 ~ 14 A/C switch OFF
 FPU (B73)±E01 (B80) 9 ~ 14 IG switch ON
  Below 2.0 Restarting at high engine coolant temp.
 ELS (A15)±E1 (B69) 7.5 ~ 14 Defogger switch and taillight switch ON
  0 ~ 1.5 Defogger's switch and taillight switch OFF
 VSV1 (B40)±E1 (B69) Below 3.0 Immediately after racing
  9 ~ 14 Idling
 VSV2 (B39)±E1 (B69) Below 3.0 For 2 sec. after IG switch ON to OFF
  9 ~ 14 Idling
 VSV3 (B38)±E1 (B69) 9 ~ 14 Idling
 
 
 PMC (B60)±E1 (B69)
 
 
 
Below 3.0
 
 
 
Idling (for M/T)
Idling and shift position ºPº, ºNº position
(for AT)
 

PMC (B60)±E1 (B69)
 

9 ~ 14 

Idling and other shift position ºPº, ºNº
position (for A/T))
 
PM1 (B62)±E2 (A65)
 
2.3 ~ 3.0
 
IG switch ON 
 
 
 1.8 ~ 2.4
 
 IG switch ON and apply vacuum 26.7 kPa
(200 mmHg, 7.9 in Hg)
EG±512± ENGINE2JZ±GTE ENGINE TROUBLESHOOTING

INSPECTION PROCEDURE
(See page EG±510)
(1) Shift the shift lever to N position.
(2) Jack up one of the rear wheels.
(3) Connect SST (check harness ªAº).
(See page
EG±510)
(4) Disconnect power steering ECU connector
and cruise control ECU connector.
(5) Turn ignition switch ON.
Measure voltage between terminal SP1 of engine
control module connector and body ground when
the wheel is turned slowly.
Voltage is generated intermittently.
Check voltage between terminal SP1 of engine control module connector
and body ground.
Check and replace engine control module.
Repair or replace harness or connector between
ECM and telltale light RH.
Repair or replace harness or connector between
telltale light RH and No.1 vehicle speed sensor.
Replace No.1 vehicle speed sensor.
Check operation of odometer and trip meter (telltale light RH
(See page Be±48)).
Check operation of No.1 vehicle speed sensor (See page BE±46).
EG±558± ENGINE2JZ±GTE ENGINE TROUBLESHOOTING

 Symbols (Terminals No.) STD Voltage (V) Condition
 ACIS (B39)±E01 (B80) 9 ~ 14 IG switch ON
 EVAP (B74)±E01 (B80) 9 ~ 14 IG switch ON 
 EGR (B75) E01 (B80)
 
 Below 2.0
 
 Idling
 EGR (B75)±E01 (B80) 9 ~ 14 Engine speed at 3,500 rpm
 
 
ISC1 (B35), ISC2 (B34)
±E01 (B80)
ISC3 (B33), ISC4 (B32) 
 Pulse generation
(See page EG±475) 
 Idling, when A/C switch ON or OFF
 
 
  VF1 (B29), VF2 (B28)±E1 (B69)
 
 
 1.8 ~ 3.2
 
 
 
Maintain engine speed at 2,500 rpm for 2
minutes after warming up then return to
Idling
 
  OX1 (B48), OX2 (B47)±E1 (B69)
OX3 (A30)* 
 Pulse generation
(See page EG±423) 
 Maintain engine speed at 2,500 rpm for 2
minutes after warming up
 
  HT1 (B73)*, HT2 (B72)*±E01 (B80)
 
 Below 3.0
 
 Idling
 
HT1 (B73) , HT2 (B72) E01 (B80)
HT3 (A36)* 9 ~ 14 IG switch ON
 
 KNK1 (B50), KNK2 (B49)±E1 (B69) 
 
Pulse generation
(See page EG±452) 
 Idling
 
 
NSW (B76) E1 (B69)
 
 9 ~ 14
 
 
IG switch ON
Other shift position in ºPº, ºNº position
 
 
NSW (B76)±E1 (B69) 
 0 ~ 3.0
 
 IG switch ON
Shift position in ºPº, ºNº position
 
 SP1 (A2)±E1 (B69)
 
 Pulse generation
(See page EG±445) 
 IG switch ON
Rotate driving wheel slowly
 
 TE1 (A20)±E1 (B69)
 
 9 ~ 14
 
 IG switch ON
 TE2 (A19)±E1 (B69) 9 ~ 14 IG switch ON
 
W (A6) E1 (B69)
 9 ~ 14 Idling
 W (A6)±E1 (B69) 0 ~ 3.0 IG switch ON 
 OD1 (A12)±E1 (B69) 
 9 ~ 14 
 IG switch ON
 A/C (A34) E1 (B69) 7.5 ~ 14 A/C switch OFF
 A/C (A34)±E1 (B69) 0 ~ 1.5 A/C switch ON (At idling)
 
ACMG (A23) E1 (B69)
 0 ~ 3.0 A/C switch ON (At idling) 
 
ACMG (A23)±E1 (B69) 
 9 ~ 14 
 A/C switch OFF
 FPU (B36)*E01 (B80) 9 ~ 14 IG switch ON
 FPU (B36)*±E01 (B80) Below 2.0 Restarting at high engine coolant temp.
 
ELS (A15) E1 (B69)
 7.5 ~ 14 Defogger switch and taillight switch ON 
 
ELS (A15)±E1 (B69) 
 0 ~ 1.5 
 Defogger switch and taillight switch OFF
*: Only for California specification vehicles EG±406
± ENGINE2JZ±GE ENGINE TROUBLESHOOTING