Inspection Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn Techstream ON.
3. Select the following menu items: Powertrain / Engine and ECT / Active Test / Activate the VSV for AICS.
4. Check the operation of the VSV when the VSV is operated by Techstream.

   OK 

   SPECIFIED CONDITION REFERENCE 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

   Fig 1: Checking Operation Of VSV

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Go to step  4

   NG: Go to next step 

1. Inspect the AICV VSV (See EXHAUST PIPE ).

   NG: REPLACE AICV VSV 

   OK: Go to next step 

1. Remove the EFI No. 1 fuse from the engine room No. 1 relay block.
2. Check the EFI No. 1 fuse.
3. Reinstall the EFI No. 1 fuse.
4. Disconnect the B31 AICV VSV connector.
5. Disconnect the B30 ECM connector.
6. Remove the integration relay from the engine room No. 1 relay block.
7. Disconnect the 1A integration relay connector.
8. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Specified Condition
   B31-2 - B30-61 (AICV)	Below 1 Ω
   B31-1 - 1A-4	Below 1 Ω
   B31-2 or B30-61 (AICV) - Body ground	10 kΩ or higher
   B31-1 or 1A-4 - Body ground	10 kΩ or higher

9. Reconnect the integration relay connector.
10. Reinstall the integration relay.
11. Reconnect the ECM connector.
12. Reconnect the AICV VSV connector.

    NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Fig 2: Identifying EFI No. 1 Fuse, B31 AICV VSV Connector And B30 ECM Connector

    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    OK: REPLACE ECM  (See REMOVAL  )

NG: REPAIR OR REPLACE VACUUM LEAKAGE POINT 

OK: REPAIR COMPLETED