Inspection Procedure

1. Disconnect the vacuum hose from the port F on the ACIS VSV.
2. Connect the hand-held tester to the DLC3.
3. Start the engine.
4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / INTAKE CTL VSV1. Operate the ACIS VSV.
5. Check the VSV's air flows when switching the VSV.

   Standard: 

   Fig 1: Specific Condition Chart

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   Fig 2: Performing Active Test (ACIS VSV)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: Go to step   4 
2. OK: GO TO NEXT STEP. 

Check the condition of the vacuum hoses between the intake manifold, ACIS VSV and IACV.

• The vacuum hoses are connected securely.
• There are no cracks or damage on the vacuum hoses.

OK: 

The vacuum hoses are connected securely and there are no cracks or damages on the vacuum hoses. 

1. NG: REPAIR OR REPLACE VACUUM HOSES 
2. OK: GO TO NEXT STEP. 

1. NG: REPLACE INTAKE AIR CONTROL VALVE 
2. OK: Go to next step. 

REPLACE ECM (See  REPLACEMENT  ) 

1. Check that air flows from port E to the air filter.
   Fig 3: Checking Air Flows From Port E To Air Filter

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2. Apply battery positive voltage across the terminals.
3. Check that air flows from port E to port F.
   Fig 4: Checking Air Flows From Port E To Port F

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1. NG: REPLACE ACIS VSV 
2. OK: GO TO NEXT STEP. 

1. Disconnect the V2 ACIS VSV connector.
2. Disconnect the E4 ECM connector.
3. Measure the resistance of the wire harness side connectors.

   Standard: 

   Fig 5: Specific Condition Chart

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 6: Identifying ACIS VSV Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   Fig 7: Identifying ECM Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Check the wire harness between the ACIS VSV and the EFI relay.
   1. Disconnect the V2 ACIS VSV connector.
   2. Remove the EFI relay from the engine room No.2 relay block (R/B).
   3. Measure the resistance between the wire harness side connectors.

      Standard: 

      Fig 8: Specific Condition Chart

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 9: Identifying ACIS VSV Connector

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 10: Identifying EFI Relay

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. NG: REPAIR OR REPLACE HARNESS AND CONNECTOR 
2. OK: Go to next step. 

REPLACE ECM (See  REPLACEMENT  )