Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Supra 1986-1987.1990.1995.1997 Approved Toyota Supra 1997 Turbos
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TC-1
TURBOCHARGING (2JZ-GTE) - TROUBLESHOOTING
TROUBLESHOOTING
TC037-01
PROBLEM SYMPTOMS TABLE
HINT:
Before troubleshooting the turbocharger, first check the engine itself. (Valve clearance, engine compression,
ignition timing etc.)
1. INSUFFICIENT ACCELERATION, LACK OF POWER OR EXCESSIVE FUEL CONSUMPTION
(Possible Cause) (Check Procedure and Correction Method)
1. TURBOCHARGING PRESSURE Check turbocharging pressure. (See page TC-5 )
TOO LOW Turbocharging pressure:
61 - 75 kPa
(0.62 - 0.76 kgf/cm2, 8.8 - 10.8 psi)
If the pressure is below specifications, begin
diagnosis from item 2.
2. RESTRICTED INTAKE SYSTEM Check intake air system, and repair or replace parts
as necessary. (See page TC-5 )
3. LEAK IN INTAKE AIR SYSTEM Check intake air system, and repair or replace parts
as necessary. (See page TC-5 )
4. RESTRICTED EXHAUST SYSTEM Check exhaust system, and repair or replace parts
as necessary. (See page TC-5 )
5. LEAK IN EXHAUST SYSTEM Check exhaust system, and repair or replace parts
as necessary. (See page TC-5 )
6. ERRATIC TURBOCHARGER Check rotation of turbine shaft. If it does not turn or
OPERATION turns with a heavy drag, replace the turbocharger
assembly.
Check axial and radial play of turbine shaft.
(See page TC-18 )
Maximum axial play : 0.110 mm (0.0045 in.)
Maximum radial play: 0.173 mm (0.0068 in.)
If the play is greater than maximum, replace the
turbocharger assembly.
1997 SUPRA (RM502U)
Author : Date : 1201
TC-2
TURBOCHARGING (2JZ-GTE) - TROUBLESHOOTING
2. ABNORMAL NOISE
(Possible cause) (Check Procedure and Correction Method)
1. TURBOCHARGING HEAT Check for loose, improperly installed or deformed
INSULATOR insulator mounting bolts, and repair or replace as
necessary.
2. EXHAUST PIPE LEAKING Check for deformed exhaust pipe, loose mounting
VIBRATING bolts or damaged gasket, and repair or replace as
necessary.
3. ERRATIC TURBOCHARGER Refer to item 6 of INSUFFICIENT ACCELERATION,
OPERATION LACK OF POWER OR EXCESSIVE FUEL
CONSUMPTION.
3. EXCESSIVE OIL CONSUMPTION OR WHITE EXHAUST
(Possible Cause) (Check Procedure and Correction Method)
FAULTY TURBOCHARGER SEAL Check for oil leakage in exhaust system
z Remove the turbine elbow from the turbocharger
and check for excessive carbon deposits on the
turbine wheel. Excessive carbon deposits
indicate a faulty turbocharger.
Check for oil leakage in intake air system.
z Check for axial and radial play of turbine shaft
and replace the turbocharger if necessary.
(See page TC-18 )
Maximum axial play : 0.110 mm (0.0045 in.)
Maximum radial play : 0.173 mm (0.0068 in.)
NOTICE:
Some oil mist in the blowby from the PCV is
normal.
Do not mistake it for an oil leak from the
turbocharger.
1997 SUPRA (RM502U)
Author : Date : 1202
TC-3
TURBOCHARGING (2JZ-GTE) - TURBOCHARGER
TURBOCHARGER TC00A-01
PRECAUTION
1. DO NOT STOP ENGINE IMMEDIATELY AFTER PULL-
ING A TRAILER OR AFTER HIGH SPEED OR UPHILL
DRIVING. IDLE ENGINE FOR 20 - 120 SECONDS, DE-
PENDING ON HOW HARD VEHICLE HAS BEEN DRIV-
EN
2. AVOID SUDDEN ACCELERATION OR RACING IM-
MEDIATELY AFTER STARTING A COLD ENGINE
3. DO NOT RUN ENGINE WITH AIR CLEANER RE-
NO! MOVED, AS THIS MAY CAUSE FOREIGN MATERIAL
TO ENTER AND DAMAGE IMPELLER WHEEL OPER-
ATING AT HIGH SPEED
4. IF A TURBOCHARGER IS FOUND TO BE DEFECTIVE
AND MUST BE REPLACED, CHECK FOR CAUSE, AND
REPAIR OR REPLACE FOLLOWING ITEMS AS NEC-
ESSARY
P11285 z Engine oil level and quality
z Conditions under which the turbocharger was used
z Oil lines leading to the turbocharger
5. USE CAUTION WHEN REMOVING AND REINSTAL-
NO! LING TURBOCHARGER ASSEMBLY. DO NOT DROP
IT OR KNOCK IT AGAINST ANYTHING OR GRASP IT
BY EASILY-DEFORMED PARTS, SUCH AS ACTUA-
TOR OR ROD, WHEN MOVING IT
6. USE CAUTION WHEN REMOVING AND REINSTAL-
Ceramic LING EXHAUST GAS CONTROL VALVE ASSEMBLY.
P13207 DO NOT DROP IT OR KNOCK IT AGAINST ANYTHING
OR GRASP IT BY EASILY-DEFORMED PARTS, SUCH
AS ACTUATOR OR ROD, WHEN MOVING IT. CON-
TROL VALVE IS CERAMIC
7. BEFORE REMOVING TURBOCHARGER, PLUG IN-
TAKE AND EXHAUST PORTS AND OIL INLET TO PRE-
VENT ENTRY OF DIRT OR OTHER FOREIGN MATERI-
AL
8. IF REPLACING TURBOCHARGER, CHECK FOR AC-
CUMULATION OF SLUDGE PARTICLES IN OIL PIPES,
AND IF NECESSARY, REPLACE OIL PIPES
9. COMPLETELY REMOVE GASKET ADHERED TO LU-
BRICATION OIL PIPE FLANGE AND TURBOCHAR-
GER OIL FLANGE
10. WHEN REPLACING BOLT OR NUTS, USE ONLY AU-
THORIZED REPLACEMENT PARTS TO PREVENT
P11284 BREAKAGE OR DEFORMATION
1997 SUPRA (RM502U)
Author : Date : 1203
TC-4
TURBOCHARGING (2JZ-GTE) - TURBOCHARGER
11. IF REPLACING TURBOCHARGER, POUR APPROX.
20 cm3 (1.2 cu in.) OF FRESH OIL INTO TURBOCHAR-
GER OIL INLET AND TURN IMPELLER WHEEL BY
HAND TO SPREAD OIL TO BEARING
12. IF OVERHAULING OR REPLACING ENGINE, CUT
FUEL SUPPLY AFTER REASSEMBLY AND CRANK
ENGINE FOR 30 SECONDS TO DISTRIBUTE OIL
THROUGHOUT ENGINE. THEN ALLOW ENGINE TO
P11352 IDLE FOR 60 SECONDS
1997 SUPRA (RM502U)
Author : Date : 1204
TC-5
TURBOCHARGING (2JZ-GTE) - TURBOCHARGER
TC00C-01
ON-VEHICLE INSPECTION
1. INSPECT INTAKE AIR SYSTEM
Check for leakage or clogging between the air cleaner and
turbocharger inlet and between the turbocharger outlet and cyl-
inder head.
z Clogged air cleaner ..Clean or replace air filter
z Hoses collapsed or deformed .... Repair or replace
z Leakage from connections .... Check each
connection and repair
z Cracks in components .... Check and replace
2. INSPECT EXHAUST SYSTEM
Check for leakage or clogging between the cylinder head and
turbocharger inlet and between the turbocharger outlet and ex-
haust pipe.
z Deformed components .... Repair or replace
z Foreign material in passages .... Remove
z Leakage from components .... Repair or replace
z Cracks in components .... Check and replace
3. INSPECT EXHAUST GAS CONTROL
VALVE OPERATION
(a) Disconnect the air hose from the actuator.
Disconnect
49 kpa
(b) Using SST, apply approx. 49 kPa (0.50 kgf/cm2, 7.1 psi)
SST of pressure to the actuator.
Move SST 09992-00242
(c) Check that the actuator push rod moves.
(d) Reconnect the air hose to the actuator.
P13205 If operation is not as specified, replace the control valve assem-
bly.
4. INSPECT TURBOCHARGING PRESSURE
(a) Using a 3-way connector, connect SST (turbocharger
pressure gauge) to the hose between the gas filter and
turbo pressure sensor.
SST 09992-00242
(b) While driving with the engine running at 5,600 rpm or
more with the throttle valve fully open in the 1st gear/L
range, check the turbocharging pressure.
Standard pressure:
61 - 75 kPa (0.62 - 0.76 kgf/cm2, 8.8 - 10.8 psi)
61 - 75 kpa If the pressure is less than that specified, check the intake and
SST
exhaust systems for leakage. If there is no leakage, replace the
turbocharger assembly.
If the pressure is above specification, check if the actuator hose
is disconnected or cracked. If not, replace the turbocharger as-
sembly.
P12024
1997 SUPRA (RM502U)
Author : Date : 1205
TC-6
TURBOCHARGING (2JZ-GTE) - TURBOCHARGER
5. INSPECT VSV FOR INTAKE AIR CONTROL VALVE
(See page SF-61 )
6. INSPECT VSV FOR WASTE GATE VALVE
(See page SF-63 )
7. INSPECT VSV FOR EXHAUST GAS CONTROL VALVE
(See page SF-65 )
8. INSPECT VSV FOR EXHAUST BYPASS VALVE
(See page SF-67 )
9. INSPECT TURBO PRESSURE SENSOR
(See page SF-79 )
1997 SUPRA (RM502U)
Author : Date : 1206
TC-7
TURBOCHARGING (2JZ-GTE) - TURBOCHARGER
COMPONENTS
TC00D-02
No.1 Air Hose
Air Cleaner MAF Meter Connector
and MAF Meter
Assembly
Engine Wire Protector
Air Cleaner Duct
Theft Deterrent Horn
Cruise Control
Actuator Cable
Tube Clamp Heat Insulator
for No.2 Front
A/T Oil Cooler Tube Exhaust Pipe
Tube Bracket
z zGasket
Front Lower Arm
No.2 Front
Tube Clamp Bracket Stay
Exhaust Pipe
Upper Front z
z
Crossmember zGasket
Extension
Pipe Support Bracket
Engine Under Cover
x 16
zNon-reusable P20891
1997 SUPRA (RM502U)
Author : Date : 1207
TC-8
TURBOCHARGING (2JZ-GTE) - TURBOCHARGER
No.1 Vacuum Pipe
Air Hose
Heated
Cable Bracket Oxygen Sensor
Heated (Bank 1 Sensor 1)
Air Inlet Duct Oxygen Sensor
Connector
z z
Engine
Wire
z Gasket
z Gasket
Heat Insulator
z Gasket for Turbocharger
z Exhaust Gas Control
Intake Air Valve
z Connector and
No.1 Air Tube Intake Air
Control Valve
Exhaust
Bypass
z Exhaust Gas Control
Pipe
z Gasket Valve Stay
z Gasket
No.4 Air Tube and Air Bypass
Valve
IAC Valve
No.2 Turbocharger z Gasket Turbocharger Pipe
Stay and Turbine
Outlet Elbow
Assembly
No.1 Water Bypass z Gasket
Turbocharger Hose zx 8
Stay z Gasket
z Gasket z Gasket
No.2 Turbo Oil Pipe
z Gasket z Gasket
Water Bypass
No.2 Turbo Hose
Oil Pipe
Crankshaft
Position
Sensor
z Gasket Connector
VSV Assembly
Engine Wire
VSV Connector for Exhaust Gas Control Valve
VSV Connector for Waste
Gate Valve
z Non-reusable part B02440
1997 SUPRA (RM502U)
Author : Date : 1208
TC-9
TURBOCHARGING (2JZ-GTE) - TURBOCHARGER
No.2 Air Tube and
Bearing Housing Side Plate No.3 Water Bypass Pipe
z Gasket
No.1 Turbo Water Pipe
z Gasket
z Gasket
z Gasket
Turbine Outlet Elbow
No.1 Turbocahrger
x6
z Gasket
x6
Exhaust
Manifold Plate
No.2 Turbocahrger
z Gasket
z Gasket No.2 Turbo Water Pipe
Bearing Housing Side Plate
z Non-reusable part
P20893
1997 SUPRA (RM502U)
Author : Date : 1209
TC-10
TURBOCHARGING (2JZ-GTE) - TURBOCHARGER
TC00E-02
REMOVAL
1. DRAIN ENGINE COOLANT
2. REMOVE ENGINE UNDER COVER
3. DISCONNECT CRUISE CONTROL ACTUATOR
CABLE FROM THROTTLE BODY
4. REMOVE NO.1 AIR HOSE
5. REMOVE AIR CLEANER DUCT
6. REMOVE AIR CLEANER AND MAF METER
Wire ASSEMBLY
(a) Remove the 3 bolts.
Clamp
(b) Loosen the hose clamp, disconnect the air hose from the
intake air connector.
(c) Disconnect the MAF meter wire from the clamp on the air
cleaner case.
(d) Disconnect the MAF meter connector, and remove the air
P11430 cleaner and MAF meter assembly.
Crossmember 7. DISCONNECT THEFT DETERRENT HORN FROM
Extension BODY
8. REMOVE FRONT LOWER ARM BRACKET STAY
Remove the 2 bolts, nut, plate washer and arm bracket stay.
Torque:
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