Inspection Procedure

1. Connect the intelligent tester to the DLC3.
2. Start the engine and turn the intelligent tester on.
3. Select the following menu items: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / INTAKE CTL VSV1. Operate the VSV for AICS.

   OK: 

   Operational noise can be heard. 

OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

NG: Go to Next Step 

1. Disconnect the V1 air intake valve connector.
2. Apply battery voltage between the terminals of the air intake valve connector.
3. Check the air intake valve operation.

   OK: 

   Operational noise can be heard. 

NG: REPLACE INTAKE AIR SURGE TANK 

Fig 1: Identifying Air Intake Valve Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step 

1. Check the wire harness and connectors between the VSV for ACIS and ECM.
   1. Disconnect the V1 VSV for ACIS connector.
   2. Disconnect the E8 ECM connector.
   3. Measure the resistance between the terminals of the VSV for ACIS connector and ECM connector.

      Standard resistance: 

      Check for open 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      VSV for ACIS (V1-1) - ACIS (E8-33)	Below 1 Ω

      Check for short 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      VSV for ACIS (V1-1) or ACIS (E8-33) - E1 (E7-1)	10 kΩ or higher

   4. Reconnect the VSV for ACIS connector.
   5. Reconnect the ECM connector.
2. Check the EFI No. 2 fuse.
   1. Remove the EFI No. 2 fuse from the fusible link block.
   2. Measure the EFI No. 2 fuse resistance.

      Standard resistance: 

      Below 1 Ω 

   3. Reinstall the EFI No. 2 fuse.
3. Check the wire harness between the VSV for ACIS connector and EFI MAIN relay.
   1. Remove the EFI MAIN relay from the engine room R/B.
   2. Disconnect the V1 VSV connector.
   3. Measure the resistance between the terminals.

      Standard resistance: 

      Check for open 

      TESTER CONNECTION SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      VSV for ACIS (V1-2) - EFI MAIN relay terminal (3)	Below 1 Ω

   4. Reinstall the EFI MAIN relay.
   5. Reconnect the VSV connector.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying VSV For ACIS, ECM And EFI Main Relay Connector Terminals

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE ECM  (See REMOVAL  )