Intake Manifold - Toyota FJ GSJ10 Technical Manual

EG-24
4. Intake Air Chamber
" The intake air chamber contains an ACIS
(Acoustic Control Induction System) actuator.
The ACIS actuator actuates the intake air control
valve that is used to change the intake pipe length
to improve engine performance in all engine speed
ranges. For details, see page EG-57.
" The ACIS actuator is laser-welded onto the intake
air chamber.
— REFERENCE —
Laser-welding:
In laser-welding, a laser-absorbing material (for the intake air chamber) is joined to a laser-transmitting
material (for the ACIS actuator). Laser beams are then irradiated from the laser-transmitting side. The
beams penetrate the laser-transmitting material to heat and melt the surface of the laser-absorbing material.
Then, the heat of the laser-absorbing material melts the laser-transmitting material and causes both
materials to become welded.

5. Intake Manifold

This intake manifold consists of two pieces, the
upper and lower, which are sealed with a rubber
gasket and adhesive.
Service Tip
" Do not disassemble the upper and lower portions
of the two-piece intake manifold, which are
sealed with a rubber gasket and adhesive. To
remove the intake manifold, remove the 10 bolts
that are shown in illustration.
" These bolts have hexagonally shaped heads.
ENGINE — 1GR-FE ENGINE
Adhesive
Laser-welding
ACIS Actuator
Lower
0240EG17C
Upper
Rubber
Gasket
0240EG18C
238EG40