SFI SYSTEM > ACIS Control Circuit |
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DESCRIPTION
This circuit opens and closes the Intake Air Control Valve (IACV) in response to the engine load in order to increase the intake efficiency (ACIS: Acoustic Control Induction System).WIRING DIAGRAM
INSPECTION PROCEDURE
1.PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE VSV FOR ACIS) |
Disconnect the vacuum hose from port F on the vacuum switching valve (for ACIS).
Connect the Techstream to the DLC3.
Start the engine.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Active the VSV for Intake Control.
Operate the VSV for ACIS.
Check the VSV air flow when switching the VSV.
- OK:
Test Condition Specified Condition VSV is ON Air from port E flows out through port F VSV is OFF Air from port E flows out through air filter
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OK | |
2.CHECK VACUUM HOSES (VACUUM SWITCHING VALVE - INTAKE AIR CONTROL VALVE, INTAKE MANIFOLD) |
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OK | |
3.INSPECT INTAKE MANIFOLD (INTAKE AIR CONTROL VALVE) |
Inspect the intake air control valve (Click here).
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OK | ||
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4.INSPECT VACUUM SWITCHING VALVE (FOR ACIS) |
Inspect the vacuum switching valve (for ACIS) (Click here).
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OK | |
5.CHECK HARNESS AND CONNECTOR (VACUUM SWITCHING VALVE - ECM AND INTEGRATION RELAY) |
Remove the EFI No. 2 fuse from the engine room relay block.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition EFI NO. 2 fuse Always Below 1 Ω
Reinstall the EFI No. 2 fuse.
Disconnect the intake air control valve connector.
Disconnect the ECM connector.
Remove the integration relay from the engine room relay block.
Disconnect the integration relay connector.
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition D62-2 - D74-62 (ACIS) Always Below 1 Ω D62-1 - 1B-4 Always Below 1 Ω D62-2 or D74-62 (ACIS) - Body ground Always 10 kΩ or higher D62-1 or 1B-4 - Body ground Always 10 kΩ or higher
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OK | ||
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