Toyota RAV4 manuals

Toyota Sienna Service Manual: ACIS Control Circuit

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 4450 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.

DESCRIPTION

WIRING DIAGRAM

WIRING DIAGRAM

INSPECTION PROCEDURE

1 PERFORM ACTIVE TEST BY INTELLIGENT TESTER (OPERATE VSV FOR ACIS)

  1. Connect the intelligent tester to the DLC3.
  2.  Start the engine and turn the intelligent tester on.
  3.  Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / INTAKE CTL VSV1. Operate the VSV for AICS.

OK: Operational noise can be heard.

2 CHECK INTAKE AIR CONTROL VALVE (OPERATION)

CHECK INTAKE AIR CONTROL VALVE

  1. Disconnect the V14 VSV for ACIS connector.
  2.  Apply battery voltage between the terminals of the air intake valve connector.
  3.  Check the air intake valve operation.

    OK: Operational noise can be heard.

  4.  Reconnect the VSV for ACIS connector.

3 CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - ECM)

CHECK HARNESS AND CONNECTOR

  1. Check the wire harness and connectors between the VSV for ACIS and ECM.
  1.  Disconnect the V14 VSV for ACIS connector.
  2.  Disconnect the E9 ECM connector.
  3.  Measure the resistance according to the value(s) in the table below.

Standard resistance : Check for open

Standard resistance

Check for short

Standard resistance

  1. Reconnect the VSV for ACIS connector.
  2. Reconnect the ECM connector

4 INSPECT FUSE (EFI NO. 2 FUSE)

INSPECT FUSE

  1. Check the EFI No. 2 fuse.
  1. Remove the EFI No. 2 fuse from the engine room junction block.
  2.  Measure the EFI No. 2 fuse resistance.

    Standard resistance: Below 1 Ω

  3.  Reinstall the EFI No. 2 fuse.

5 CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - EFI RELAY)

CHECK HARNESS AND CONNECTOR

  1. Check the wire harness between the VSV for ACIS connector and EFI relay.
  1.  Remove the EFI relay from the engine room junction block.
  2.  Disconnect the V14 VSV connector.
  3.  Measure the resistance according to the value(s) in the table below.

Standard resistance : Check for open

Standard resistance

  1. Reinstall the EFI relay.
  2. Reconnect the VSV connector.

CHECK ECM POWER SOURCE CIRCUIT

Cranking Holding Function Circuit
DESCRIPTION The system detects the ignition switch's starting signal (STSW) and then supplies current to the starter until the ECM judges that the engine has started successfully. The purpose is t ...

Air Intake Control Circuit
DESCRIPTION The air cleaner is equipped with two inlets, one of which is opened or closed by the Air Intake Control Valve (AICV). This system reduces intake noise and increases engine power at l ...

Other materials:

VIN not Programmed or Mismatch - ECM / PCM
DTC P0630 VIN not Programmed or Mismatch - ECM / PCM DESCRIPTION DTC P0630 is set when the Vehicle Identification Number (VIN) is not stored in the Engine Control Module (ECM) or the input VIN is not accurate. Input the VIN with the intelligent tester. MONITOR STRATEGY TYPICAL ENABL ...

Installation
1. INSTALL TIRE PRESSURE WARNING VALVE AND TRANSMITTER (a) Insert the tire pressure warning valve and transmitter into the valve installation hole. Insert it from the inside of the rim so that the printed surface can be seen. NOTICE: Check that there is no visible deformation, damage, ...

Installation
1. INSTALL FRONT PASSENGER AIRBAG ASSEMBLY  Install the front passenger airbag assembly with the 2 screws. 2. INSTALL INSTRUMENT PANEL SUB-ASSEMBLY 3. CONNECT FRONT PASSENGER AIRBAG ASSEMBLY CONNECTOR  Connect the connector to the front passenger airbag assembly. ...

В© 2011-2021 Copyright www.tsienna.net