Inspection Procedure

1. Turn the ignition switch on (IG) and turn the tester on.
2. Select the following menu items: Powertrain / Engine / Active Test / Activate the VSV for Intake Control and operate the VSV for AICV.
3. Check the operation of the VSV when the VSV is operated by Techstream.

   Standard 

   TESTER OPERATION SPECIFIED CONDITION CHART
   
   

   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

OK:  Go to step  4

Fig 1: Checking Operation Of VSV

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: Go to next step 

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

NG: REPLACE INTAKE AIR CONTROL VALVE ASSEMBLY 

OK: Go to next step 

1. Disconnect the VSV for AICV connector.
2. Turn the ignition switch on (IG).
3. Measure the voltage according to the value(s) on the table below.

   Standard voltage 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   1 - Body ground	9 to 14 V

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 2 FUSE - VSV FOR AICV) 

Fig 2: Identifying VSV For AICV Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

1. Check the wire harness between the VSV for AICV connector and the ECM connector.
   1. Disconnect the VSV for AICV connector.
   2. Disconnect the ECM connector.
   3. Measure the resistance between the terminals of the wire harness side connectors and body ground.

      Standard resistance (Check for open) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      VSV for AICV (A13-2) - AICV (A55-4)	Below 1 Ω

      Standard resistance (Check for short) 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Specified Condition
      VSV for AICV (A13-2) or AICV (A55-4) - Body ground	10 kΩ or higher

   4. Reconnect the ECM connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 3: Identifying ECM Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step 

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

NG: REPAIR OR REPLACE AIR CLEANER CAP 

OK : REPLACE ECM  (See ECM  )