ES–470
2GR-FE ENGINE CONTROL SYSTEM
– SFI SYSTEM
ES
DESCRIPTION
This circuit opens and closes the Intake Air Control Valve (IACV) in response to changes in the engine
load in order to increase the intake efficiency (ACIS: Acoustic Control Induction System).
When the engine speed is between 0 and 4,450 rpm and the throttle valve opening angle is 60
°
or more,
the ECM supplies current to the VSV (ON status), to close the IACV. Under other conditions, the VSV is
usually OFF and the IACV is open.
ACIS Control Circuit
IACV Closed (VSV: ON)
Engine Speed
Engine Speed
ECM
6
4
2
5
3
1
Throttle Valve
Opening Angle
Throttle Valve Opening Angle
ACIS
Actuator
VSV
Throttle Sensor
IACV
IACV Open (VSV: OFF)
0 rpm
4,450 rpm
60°
Engine Speed
ECM
6
4
2
5
3
1
Throttle Valve Opening Angle
ACIS
Actuator
VSV
Throttle Sensor
IACV
G041080E04
Summary of Contents for 2GR-FE
Page 176: ...ES 20 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES NEXT 20 CONDUCT CONFIRMATION TEST END ...
Page 247: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 91 ES OK REPLACE ECM See page ES 518 ...
Page 412: ...ES 256 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A END ...
Page 447: ...2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES 291 ES OK REPLACE ECM See page ES 518 ...
Page 556: ...ES 400 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES A REPLACE TCM ...
Page 630: ...ES 474 2GR FE ENGINE CONTROL SYSTEM SFI SYSTEM ES OK REPLACE ECM See page ES 518 ...
Page 658: ...2GR FE ENGINE CONTROL SYSTEM VVT SENSOR ES 493 ES 22 INSTALL ENGINE UNDER COVER LH ...
Page 897: ...2GR FE STARTING SMART KEY SYSTEM ST 35 ST OK REPLACE MAIN BODY ECU ...
Page 923: ...2GR FE STARTING SMART KEY SYSTEM ST 61 ST OK REPLACE MAIN BODY ECU ...
Page 935: ...2GR FE STARTING SMART KEY SYSTEM ST 73 ST OK REPLACE MAIN BODY ECU ...
Page 940: ...ST 78 2GR FE STARTING SMART KEY SYSTEM ST OK REPLACE MAIN BODY ECU ...
Page 958: ...ST 96 2GR FE STARTING SMART KEY SYSTEM ST OK END MAIN BODY ECU DEFECTIVE ...