Inspection Procedure

1. Turn the ignition switch to the ON position and turn Techstream on.
2. Select the following menu items: Powertrain / Engine and ECT / Active Test / Activate the VSV for AICS and operate the VSV for AICV.
3. Check the operation of the VSV when the VSV is operated by Techstream.

   Standard 

   STANDARD VOLTAGE SPECIFICATION
   
   

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

   Fig 1: Identifying Operation Of VSV

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK:  Go to step  6

NG: Go to next step. 

1. Inspect the intake air control valve assembly (See REMOVAL ).

NG: REPLACE INTAKE AIR CONTROL VALVE ASSEMBLY 

OK: Go to next step. 

1. Check the wire harness between the VSV for AICV connector and the ECM connector.
   Fig 2: Identifying VSV, AICV Connector And ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Disconnect the V2 VSV for AICV 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 

      RESISTANCE SPECIFIED CONDITIONS
      
      

      Tester Connection	Specified Condition
      VSV for AICV (V2-2) - AICV (E9-27)	Below 1 Ω

      Check for short 

      RESISTANCE SPECIFIED CONDITIONS
      
      

      Tester Connection	Specified Condition
      VSV for AICV (V2-2) or AICV (E9-27) - Body ground	10 kΩ or higher

   4. Reconnect the ECM connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (VSV FOR AICV - ECM) 

OK: Go to next step. 

1. Check the EFI No. 2 fuse.
   1. Remove the EFI No. 2 fuse from the engine room junction block.
   Fig 3: Identifying Engine Room Junction Block
   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the EFI No. 2 fuse resistance.

      Standard resistance: Below 1 Ω 

   3. Reinstall the EFI No. 2 fuse.

NG: REPLACE FUSE (EFI NO. 2 FUSE) 

OK: Go to next step. 

1. Check the wire harness between the VSV for AICV and the EFI relay.
   Fig 4: Identifying VSV, AICV And EFI Relay

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   1. Remove the EFI relay from the engine room junction block.
   2. Measure the resistance according to the value (s) in the table below.

      Standard resistance: Check for open 

      RESISTANCE SPECIFIED CONDITIONS
      
      

      Tester Connection	Specified Condition
      VSV for AICV (V2-1) - EFI relay terminal (3)	Below 1 Ω

   3. Reconnect the VSV for AICV connector.
   4. Reinstall the EFI relay.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (VSV FOR AICV - EFI RELAY) 

OK: Go to next step. 

1. Inspect the vacuum tank (See ON-VEHICLE INSPECTION ).

NG: REPAIR OR REPLACE AIR CLEANER CAP 

OK: CHECK ECM POWER SOURCE CIRCUIT