Page 1521 of 2543
Intake Air Control Valve
COMPONENTS FOR REMOVAL AND
INSTALLATION
± ENGINESFI SYSTEM (2JZ±GE)EG±231
Page 1522 of 2543

INTAKE AIR CONTROL VALVE REMOVAL
Installation is in the reverse order of removal.
1. REMOVE VSV FOR FUEL PRESSURE CONTROL
(a) Disconnect the connector and hoses:
(1) VSV connector
(2) Vacuum sensing hose from fuel pressure control
(3) Vacuum sensing hose from air intake chamber
2. REMOVE OIL DIPSTICK AND GUIDE FOR A/T
(a) Remove the bolt.
(b) Pull out the dipstick guide together with the dipstick.
INSTALLATION HINT: Apply soapy water to the O±ring, and
push in the dipstick guide.
(c) Remove the O±ring from the dipstick guide.
INSTALLATION HINT: Use a new O±ring.
3. REMOVE OIL DIPSTICK AND GUIDE FOR ENGINE
(a) Disconnect the fuel return hose from the clamp of the dipstick
guide.
(b) Remove the bolt.
(c) Pull out the dipstick guide together with the dipstick.
INSTALLATION HINT: Apply soapy water to the O±ring, and
push in the dipstick guide.
(d) Remove the O±ring from the dipstick guide.
INSTALLATION HINT: Use a new O±ring.
4. REMOVE EGR PIPE
(a) Loosen the union nut of the EGR pipe.
Torque: 64 NVm (650 kgfVcm, 47 ftVlbf)
(b) Remove the 2 bolts, EGR pipe and gasket.
Torque: 27 NVm (270 kgfVcm, 20 ftVlbf)
5. DISCONNECT EGR GAS TEMPERATURE SENSOR
CONNECTOR
(a) Disconnect the connector from the No.2 vacuum pipe.
(b) Disconnect the sensor connector from the wiring connector.
6. DISCONNECT NO.2 VACUUM PIPE FROM AIR INTAKE
CHAMBER AND INTAKE MANIFOLD
Remove the 2 nuts, and disconnect the vacuum pipe from the
air intake chamber and intake manifold.
Torque: 27 NVm (270 kgfVcm, 20 ftVlbf)
EG±232± ENGINESFI SYSTEM (2JZ±GE)
Page 1523 of 2543

7. REMOVE AIR INTAKE CHAMBER (WITH INTAKE AIR
CONTROL VALVE)
(a) Remove the 2 nuts holding the throttle body bracket to the
cylinder head.
Torque: 21 NVm (210 kgfVcm, 15 ftVlbf)
(b) Re mo ve th e 4 bo lts an d 2 nu ts ho ld in g th e in ta ke air
connector to the air intake chamber.
Torque: 27 NVm (270 kgfVcm, 20 ftVlbf)
(c) Remove the bolt, and disconnect the engine wire protector
from the air intake chamber.
(d) Disconnect these hoses:
(1) 3 vacuum hoses (from No.2 vacuum pipe) from No.1
vacuum pipe
(2) Vacuum hose (from No.2 vacuum pipe) from air intake
chamber
(3) PS air hose from air intake chamber
(4) Brake booster vacuum hose from air intake chamber
Remove the union bolt and 2 gaskets, and disconnect
the vacuum hose.
Torque: 29 NVm (300 kgfVcm, 22 ftVlbf)
(5) Vacuum hose (from actuator for ACIS) from No.1 vacu-
um pipe
(6) Except California:
Vacuum sensing hose (from fuel pressure regulator)
from air intake chamber
(e) Loosen the 2 nuts holding the air intake chamber stays to the
cylinder head.
Torque: 18 NVm (185 kgfVcm, 13 ftVlbf)
(f) Remove the 2 bolts, and disconnect the 2 air intake chamber
stays from the air intake chamber.
Torque: 18 NVm (185 kgfVcm, 13 ftVlbf)
± ENGINESFI SYSTEM (2JZ±GE)EG±233
Page 1524 of 2543
(g) Remove the 5 bolts, nut, air intake chamber and 2 gaskets.
Torque: 27 NVm (270 kgfVcm, 20 ftVlbf)
INSTALLATION HINT: Install a new gasket to the air intake
chamber, facing the protrusion rearward.
INTAKE AIR CONTROL VALVE
INSPECTION
INSPECT INTAKE AIR CONTROL VALVE
(a) With 53.3 kPa (400 mmHg, 15.75 in.Hg) of vacuum applied
to the actuator, check that the actuator rod moves.
If operation is not as specified, turn the adjusting screw.
(b) 1 minute after applying the vacuum in (a), check that the
actuator rod does not return. EG±234
± ENGINESFI SYSTEM (2JZ±GE)
Page 1525 of 2543
EFI MAIN RELAY
EFI MAIN RELAY INSPECTION
1. REMOVE EFI MAIN RELAY
LOCATION: In the engine compartment relay box.
2. INSPECT EFI MAIN RELAY
A. Inspect relay continuity
(a) Using an ohmmeter, check that there is continuity between
terminals 1 and 2.
(b) Check that there is no continuity between terminals 3 and 5.
If continuity is not as specified, replace the relay.
B. Inspect relay operation
(a) Apply battery voltage across terminals 1 and 2.
(b) Using an ohmmeter, check that there is continuity between
terminals 3 and 5.
If operation is not as specified, replace the relay.
3. REINSTALL EFI MAIN RELAY
± ENGINESFI SYSTEM (2JZ±GE)EG±235
Page 1526 of 2543
VSV FOR ACIS
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 205C (685F) 38.5±44.5
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±236
± ENGINESFI SYSTEM (2JZ±GE)
Page 1527 of 2543
C. Inspect VSV operation
(a) Check that air flows from port E to the filter.
(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 FUEL PRESSURE CONTROL
(California only)
COMPONENTS FOR REMOVAL AND
INSTALLATION
± ENGINESFI SYSTEM (2JZ±GE)EG±237
Page 1528 of 2543
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 205C (685F) 33±39
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 flows from port E to G.
(b) Apply battery voltage across the terminals.
(c) Check that air flows from port E to the filter.
If operation is not as specified, replace the VSV.
3. REINSTALL VSV EG±238
± ENGINESFI SYSTEM (2JZ±GE)