Toyota COMPUTER-CONTROLLED SYSTEM Training Manual page 132

2 . TYPE 2
GENERAL
OTHER CONTROL SYSTEMS - ACI S
In this type of ACIS, the air control valves are
located in front of the No . 2 air intake chamber .
By opening and closing these valves i n
No . 2 ai r
intake chambe r
OHP 86
(Po
OHP 8 7
Cross section A-A '
No . 1 air intake chamber
Air control valve s
Vacuum tan k
P
Fro m
air
[-->
cleane r
Intak e
manifold
accordance with engine running conditions, the
same effect as lengthening or shortening the
intake manifold (as in Type 1) can be obtained .
Air
control
valve s
Combustion
chamber
Vs V
Actuator
Engine
EC U
Engine spee d
OHP 86
122