A00306
1
3
5
2
4
6
IACV
IACV closed (VSV: ON)
Throttle Valve
30
°
3,700 rpm
Engine speed
Throttle valve
opening angle
FI7011 FI6570
A07532
From Battery
2J
2
EFI Main Relay
W-B
B-Y
B-Y
ECM
ACIS
1
2
MREL
Y-G
E01
VSV for ACIS
R-Y
7
2K
2C
5
1
2
3
Engine Romm J/B No.2
EFI
3B
11
B+
B-R
17
8
E12
E8
EE
3A
9
12
IH1
3
2B
5
J/B No.3
-
DIAGNOSTICS
ENGINE
DI-151
305
Author:
Date:
2001 SIENNA (RM787U)
IACV Control VSV Circuit
CIRCUIT DESCRIPTION
This circuit opens and closes the IACV (Intake Air Control Valve) in response to the engine load in order to
increase the intake efficiency (ACIS: Acoustic Control Induction System).
When the engine speed is 3,700 rpm or less and the throttle valve opening angle is 60
°
or more, the ECM
turns the VSV ON and closes the IACV. At all other times, the VSV is OFF, so the IACV is open.
WIRING DIAGRAM
DI22N-03
Содержание RM787U
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