Inspection Procedure

1. Disconnect the vacuum hose.
2. Connect the intelligent tester or Techstream to the DLC3.
3. Turn the ignition switch ON and turn the tester ON.
4. Enter the following menus:
   1. Intelligent tester - Select: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / INTAKE CTL VSV1. Operate the VSV for ACIS.
   2. Techstream - Select: Powertrain / Engine and ECT / Active Test / Active the VSV for Intake Control. Operate the VSV for ACIS.
5. Check the VSV operation when it is operated using the intelligent tester or Techstream.
   Fig 1: Checking VSV Operation

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   Standard 

   OPERATE VSV FOR ACIS
   
   

   Tester Operation	Specified Condition
   VSV ON	Air from port E flows out through port F
   VSV OFF	Air from port E flows out through air filter

   Result 

   RESULT REFERENCE
   
   

   Result	Proceed to
   NG	A
   OK	B

6. Reconnect the vacuum hose.

B:  Go to step  4

A: Go to next step 

1. Inspect VSV for ACIS (see ON-VEHICLE INSPECTION ).

NG: REPLACE VSV FOR ACIS 

OK: Go to next step 

1. Check the wire harness and connectors between the VSV for ACIS and ECM.
   1. Disconnect the D61 VSV for ACIS connector.
   2. Disconnect the D74 ECM connector.
   3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open) 

      VSV FOR ACIS AND ECM (CHECK FOR OPEN)
      
      

      Tester Connection	Condition	Specified Condition
      D61-2 - D74-62 (ACIS)	Always	Below 1 Ω

      Standard resistance (Check for short) 

      VSV FOR ACIS AND ECM (CHECK FOR SHORT)
      
      

      Tester Connection	Condition	Specified Condition
      D61-2 or D74-62 (ACIS) - Body ground	Always	10 kΩ or higher

   4. Reconnect the VSV for ACIS connector.
   5. Reconnect the ECM connector.
2. Check the wire harness between the VSV for ACIS and EFI NO. 2 fuse.
   1. Disconnect the D61 VSV for ACIS connector.
   2. Remove the EFI NO. 2 fuse from the engine room relay block.
   3. Measure the resistance according to the value(s) in the table below.

      Standard resistance (Check for open) 

      VSV FOR ACIS AND EFI NO. 2 FUSE
      
      

      Tester Connection	Condition	Specified Condition
      D61-1 - EFI NO. 2 fuse	Always	Below 1 Ω

      Fig 2: Checking Harness And Connector (VSV For ACIS - ECM, VSV For ACIS - EFI No. 2 Fuse)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   4. Reconnect the VSV for ACIS connector.
   5. Reinstall the EFI relay.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: Go to next step 

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 

1. Check that the lever moves when a vacuum of 26.6 kPa (200 mmHg, 7.85 in.Hg) is applied with the vacuum gauge on.

   OK: Lever moves 

2. Check that the vacuum of 26.6 kPa (200 mmHg, 7.85 in.Hg) is sustained for 1 minute in the above state.

   OK: Vacuum is sustained 

   Fig 3: Inspecting Intake Air Surge Tank

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: REPLACE INTAKE AIR SURGE TANK (INTAKE AIR CONTROL VALVE)  (See REMOVAL )

OK: REPLACE ECM  (see REMOVAL  )