TOYOTA SUPRA 1986 Service Repair Manual

VSV FOR EXHAUST BYPASS VALVE
COMPONENTS FOR REMOVAL AND
INSTALLATION
VSV INSPECTION
1. REMOVE VSV
2. INSPECT VSV
A. Inspect VSV for open circuit
Using an ohmmeter, check that there is continuity between
the terminals.
Resistance:
At 20°C (68°F) 22±26

If there is no continuity, replace the VSV.
B. Inspect VSV for ground
Using an ohmmeter, check that there is no continuity be-
tween each terminal and the body.
If there is continuity, replace the VSV.
± ENGINESFI SYSTEM (2JZ±GTE)EG±307

C. Inspect VSV operation
(a) Check that air does not flow from port E to F.
(b) Apply battery voltage across the terminals.
(c) Check that air flows from port E to F.
If operation is not as specified, replace the VSV.
3. REINSTALL VSV
VSV FOR EVAP
COMPONENTS FOR REMOVAL AND
INSTALLATION
EG±308± ENGINESFI SYSTEM (2JZ±GTE)

VSV INSPECTION
1. REMOVE VSV
2. INSPECT VSV
A. Inspect VSV for open circuit
Using an ohmmeter, check that there is continuity between
the terminals.
Resistance:
At 20°C (68°F) 30±34

If there is no continuity, replace the VSV.
B. Inspect VSV for ground
Using an ohmmeter, check that there is no continuity be-
tween each terminal and the body.
If there is continuity, replace the VSV.
C. Inspect VSV operation
(a) Check that air does not flow from port E to F.
(b) Apply battery voltage across the terminals.
(c) Check that air flows from port E to F.
If operation is not as specified, replace the VSV.
3. REINSTALL VSV
± ENGINESFI SYSTEM (2JZ±GTE)EG±309

VSV FOR EGR
COMPONENTS FOR REMOVAL AND
INSTALLATION
VSV INSPECTION
1. REMOVE VSV
2. INSPECT VSV
A. Inspect VSV for open circuit
Using an ohmmeter, check that there is continuity between
the terminals.
Resistance:
At 20°C (68°F) 30±34

If there is no continuity, replace the VSV.
B. Inspect VSV for ground
Using an ohmmeter, check that there is no continuity be-
tween each terminal and the body.
If there is continuity, replace the VSV. EG±310
± ENGINESFI SYSTEM (2JZ±GTE)

C. Inspect VSV operation
(a) Check that air does not flow from port E to F.
(b) Apply battery voltage across the terminals.
(c) Check that air flows from port E to F.
If operation is not as specified, replace the VSV.
3. REINSTALL VSV
ENGINE COOLANT TEMPERATURE
(ECT) SENSOR
COMPONENTS FOR REMOVAL AND
INSTALLATION
± ENGINESFI SYSTEM (2JZ±GTE)EG±311

ECT SENSOR INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE ECT SENSOR
(a) Disconnect the ECT sensor connector.
(b) Using SST, remove the ECT sensor and gasket.
SST 09205±76030
3. INSPECT ECT SENSOR
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance:
Refer to the graph
If the resistance is not as specified, replace the ECT sensor.
4. REINSTALL ECT SENSOR
(a) Install a new gasket to the ECT sensor.
(b) Using SST, install the ECT sensor.
SST 09205±76030
(c) Connect the ECT sensor connector.
5. REFILL WITH ENGINE COOLANT EG±312
± ENGINESFI SYSTEM (2JZ±GTE)

EGR GAS TEMPERATURE SENSOR
COMPONENTS FOR REMOVAL AND
INSTALLATION
EGR GAS TEMPERATURE SENSOR
INSPECTION
1. REMOVE EGR GAS TEMPERATURE SENSOR
2. INSPECT EGR GAS TEMPERATURE SENSOR
Using an ohmmeter, measure the resistance between the ter-
minals.
Resistance:
At 50°C (112°F)
64±97 k

At 100°C (212°F)
11±16 k

At 150°C (302°F)
2±4 k

If the resistance is not as specified, replace the sensor.
Torque: 20 NVm (200 kgfVcm, 14 ftVlbf)
3. REINSTALL EGR GAS TEMPERATURE SENSOR
± ENGINESFI SYSTEM (2JZ±GTE)EG±313

TURBO PRESSURE SENSOR
COMPONENTS FOR REMOVAL AND
INSTALLATION
TURBO PRESSURE SENSOR
INSPECTION
1. INSPECT POWER SOURCE VOLTAGE OF TURBO
PRESSURE SENSOR
(a) Disconnect the turbo pressure sensor connector.
(b) Turn the ignition switch ON.
(c) Using a voltmeter, measure the voltage between connector
terminals VC and E2 of the wiring harness side.
Voltage:
4.5±5.5 V
(d) Turn the ignition switch OFF.
(e) Reconnect the turbo pressure sensor connector. EG±314
± ENGINESFI SYSTEM (2JZ±GTE)

2. INSPECT SUPPLY POWER OF TURBO PRESSURE
SENSOR
(a) Disconnect the ECM from the ECU bracket.
(See steps 1 to 4 in ECM)
(b) Install SST (check harness) between the ECM and wiring
connectors.
(See standard value of ECM terminals in Engine Trouble-
shooting)
SST 09990±01000
(c) Turn the ignition switch ON.
(d) Disconnect the vacuum hose from the turbo pressure sensor.
(e) Connect a voltmeter to terminals PIM and E2 of the ECM, and
measure the output voltage under ambient atmospheric
pressure.
(f) Apply vacuum to the turbo pressure sensor in 13.3 kPa (100
mmHg, 3.94 in.Hg) segments to 66.7 kPa (500 mmHg, 19.69
in.Hg).
(g) Measure the voltage drop from step (c) above for each
segment.
Voltage drop
 
 
 
 
 
Applied
Vacuum
kPa
(mmHg)
(in.Hg.) 
 
 
 
 
13.3
(100)
(3.94)
 
 
 
 
 
26.7
(200)
(7.87)
 
 
 
 
 
40.0
(300)
(11.81)
 
 
 
 
 
53.3
(400)
(15.75)
 
 
 
 
 
66.7
(500)
(19.69)
 
 
Voltage
drop V 
 
0.15±
0.35 
 
0.4±
0.6 
 
0.65±
0.85 
 
0.9±
1.1 
 
1.15±
1.35
(h) Remove the SST.
SST 09990±01000
(i) Reinstall the ECM. (See steps 6 to 9 in ECM)
(j) Reconnect the vacuum hose to the turbo pressure sensor.
± ENGINESFI SYSTEM (2JZ±GTE)EG±315

KNOCK SENSOR
COMPONENTS FOR REMOVAL AND
INSTALLATION
EG±316± ENGINESFI SYSTEM (2JZ±GTE)