Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota FJ Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE VSV FOR ACIS)

Disconnect the vacuum hose.
Connect a Techstream to the DLC3.
Turn the ignition switch ON and turn the tester ON.
Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the VSV for Intake Control. Operate the VSV for ACIS.

Check the VSV operation when it is operated using a Techstream.

Fig 1: Identifying VSV Operation

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

TESTER OPERATIONS AND SPECIFIED CONDITIONS

Tester Operations	Specified Conditions
VSV ON	Air from port E flows out through port F
VSV OFF	Air from port E flows out through air filter

Reconnect the vacuum hose.

OK: Go to step 4

NG: Go to next step

CHECK VSV FOR ACIS (OPERATION)
1. Check that air flows from port E to the air filter.
  OK: Air from port E flows out through the air filter.
  
  Fig 2: Identifying Air Flows From Port To Air Filter
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply the battery positive voltage across the terminals.
3. Check that air flows from port E to port F.
  OK: Air from port E flows out through port F.
NG: REPLACE VSV FOR ACIS (See REMOVAL )

OK: Go to Next Step

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

Check the wire harness and connectors between the VSV for ACIS and ECM.

Disconnect the B17 VSV for ACIS connector.

Fig 4: Identifying B17 VSV For ACIS Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Disconnect the B1 ECM connector.

Measure the resistance according to the value(s) in the table below.

Standard Resistance (Check for open)

TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

Tester Connections	Specified Conditions
VSV for ACIS (B17-2) - ACIS (B1-33)	Below 1 Ω

Standard Resistance (Check for short)

TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

Tester Connections	Specified Conditions
VSV for ACIS (B17-2) or ACIS (B1-33) - Body ground	10 kΩ or higher

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

Check the wire harness between the VSV for ACIS and EFI relay.

Disconnect the B17 VSV for ACIS connector.
Remove the EFI relay from the engine room relay block.

Measure the resistance according to the value(s) in the table below.

Standard Resistance (Check for open)

TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

Tester Connections	Specified Conditions
VSV for ACIS (B17-1) - EFI relay terminal 3 of R/B	Below 1 Ω

Reconnect the VSV for ACIS connector.
Reinstall the EFI relay.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

OK: Go to Next Step

CHECK VACUUM HOSES (INTAKE MANIFOLD - IACV, IACV - VSV FOR ACIS)
1. Check that the vacuum hose is connected correctly.
2. Check the vacuum hose for looseness and disconnection.
3. Check the vacuum hose for cracks, holes and damage.
NG: REPAIR OR REPLACE VACUUM HOSES

OK: Go to Next Step
INSPECT INTAKE AIR CONTROL VALVE (INTAKE AIR SURGE TANK)
1. Check that the lever moves when a vacuum of 26.6 kPa (200 mmHg) is applied with the vacuum gauge on.
  OK: Lever moves
2. Check that the vacuum of 26.6 kPa (200 mmHg) is sustained for 1 minute in the above state.
  OK: Vacuum is sustained
  
  Fig 5: Identifying Intake Air Control Valve (Intake Air Surge Tank)
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE INTAKE AIR CONTROL VALVE (INTAKE AIR SURGE TANK)

OK: REPLACE ECM (See REMOVAL )