Inspection Procedure

1. Disconnect the vacuum hose from the port F on the ACIS VSV.
   Fig 1: Disconnecting Vacuum Hose From Port F On ACIS VSV

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2. Connect the hand-held tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the DLC3.
3. Start the engine.
4. Enter the following menus: ACTIVE TEST/ INTAKE CTL VSV 1. Operate the AICS VSV.
5. Check the VSV's airflow when switching the VSV.

   Standard: 

   Fig 2: VSV Specified Condition Chart

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1. OK: Go to step   4 
2. NG: 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.
• Vacuum hoses are not cracked or damaged.

OK: 

The vacuum hoses are connected securely and not cracked or damaged. 

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: Applying Battery Positive Voltage Across Terminals

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1. NG: REPLACE ACIS VSV 
2. OK: Go to next step. 

1. Check the wire harness between the ACIS VSV and the ECM.
   1. Disconnect the V2 ACIS VSV connector.
      Fig 5: Identifying Connector Terminals ACIS VSV

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   2. Disconnect the E4 ECM connector.
      Fig 6: Disconnecting V2 ACIS VSV Connector

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   3. Measure the resistance of the wire harness side connectors.

      Standard: 

      Fig 7: Resistance Condition Chart

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2. Check the wire harness between the ACIS VSV and the EFI MAIN relay.
   1. Disconnect the V2 ACIS VSV connector.
      Fig 8: Disconnecting V2 ACIS VSV Connector

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   2. Remove the EFI MAIN relay from the engine room Relay Block (R/B).
      Fig 9: Removing EFI Main Relay From Engine Room Relay Block

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   3. Measure the resistance of the wire harness side connectors.

      Standard: 

      Fig 10: Resistance Specification Chart

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

   REPLACE ECM (SEE  REPLACEMENT  )