Lexus RX300 (MCU15). Service manual - part 420

FI0VN–01

B04799

Intake Air Control Valve

z

 Gasket

Actuator Vacuum Hose

Ground Strap

Ground Cable

N·m (kgf·cm, ft·lbf)

: Specified torque

z

 Non–reusable part

14.5 (145, 10)

–

ELECTRONIC FUEL INJECTION

ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)

FI–51

LEXUS RX300   (RM785E)

COMPONENTS

FI0VO–01

B04802

FI–52

–

ELECTRONIC FUEL INJECTION

ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)

LEXUS RX300   (RM785E)

REMOVAL

1.

DISCONNECT ACTUATOR VACUUM HOSE

2.

DISCONNECT DLC1 FROM DLC1 BRACKET

3.

REMOVE INTAKE AIR CONTROL VALVE

(a)

Remove the 4 nuts and DLC1 bracket, and disconnect the
ground strap and cable.

(b)

Remove the intake air control valve by prying a screwdriv-
er between the intake air control valve and air intake
chamber.

(c)

Remove the gasket.

FI0VP–01

S05041

Vacuum

S05689

Air

Air

S05688

Vacuum

–

ELECTRONIC FUEL INJECTION

ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)

FI–53

LEXUS RX300   (RM785E)

INSPECTION

1.

INSPECT INTAKE AIR CONTROL VALVE

(a)

With 26.7 kPa (200 mmHg, 7.9 in.Hg) of vacuum applied
to the actuator, check that the actuator rod moves.

(b)

One minute after applying the vacuum in (a), check that
the actuator rod does not return.

If the operation is not as specified, replace the intake air control
valve.

2.

INSPECT VACUUM TANK

LOCATION: The LH side member under the battery tray.
(a)

Check that air flows from port B to port A.

(b)

Check that air does not flow from port A to port B.

(c)

Plug port B with your finger, and apply 26.7 kPa (200
mmHg, 7.9 in.Hg) of vacuum to port A, and check that
there is no change is vacuum after one minute.

If the operation is not as specified, replace the vacuum tank.
3.

INSPECT VSV (See page FI–62)

FI0VQ–01

B04803

New Gasket

S05052

Seal
Packing

Rubber

Seal
Packing

FI–54

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ELECTRONIC FUEL INJECTION

ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)

LEXUS RX300   (RM785E)

INSTALLATION

1.

INSTALL INTAKE AIR CONTROL VALVE

(a)

Install a new gasket to the air intake chamber.

(b)

Apply a light coat of engine oil to the rubber portions.

(c)

Apply seal packing to the positions of the intake air control
valve shown in the illustration.
Seal packing: Part No. 08826–00080 or equivalent

(d)

Install the intake air control valve, DLC1 bracket, ground
strap and cable with the 4 nuts.
Torque: 14.5 N·m (145 kgf·cm, 10 ft·lbf)

2.

CONNECT DLC1

3.

CONNECT ACTUATOR VACUUM HOSE