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Inspection Procedure

Hand-held Tester: 

  1. READ VALUE OF HAND-HELD TESTER (VSV FOR AICV) 
    1. Turn the ignition switch ON and the hand-held tester main switch ON.
    2. Select the item "DIAGNOSIS/ENHANCED OBD II/ACTIVE TEST/INTAKE CTL VSV1" and operate the VSV for AICV.
    3. Check the operation of the VSV when the VSV is operated by the hand-held tester.
      Fig 1: Checking Operation Of VSV
      G01395433Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Standard: 

      Fig 2: Specified Conditions
      G01395432Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: Go to step   4 
    2. NG: GO TO NEXT STEP. 
  2. CHECK VSV (FOR AICV) (See  INSPECTION  ) 
    1. OK: GO TO NEXT STEP. 
    2. NG: REPLACE INTAKE AIR CONTROL VALVE ASSY NO. 3 
  3. CHECK HARNESS AND CONNECTOR (VSV FOR AICV - ECM, VSV FOR AICV - EFI RELAY) 
    1. Check the wire harness between the VSV for AICV connector and the ECM connector.
      1. Disconnect the I1 VSV for AICV connector.
      2. Disconnect the E8 ECM connector.
      3. Check the resistance between the wire harness side connectors.
        Fig 3: Identifying VSV For AICV Connector Terminals
        G01395436Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Fig 4: Identifying ECM E8 Connector Terminals
        G01395437Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard (Check for open): 

        Fig 5: Specified Conditions
        G01395434Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard (Check for short): 

        Fig 6: Specified Conditions
        G01395435Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Reconnect the VSV for AICV connector.
      5. Reconnect the ECM connector.
    2. Check the wire harness between the VSV for AICV and the EFI relay.
      1. Inspect the EFI No. 2 fuse.
        • Remove the EFI No. 2 fuse from the fusible link block.
        • Check for continuity in the EFI No. 2 fuse.
          1. Standard: Continuity 
        • Reinstall the EFI No. 2 fuse.
      2. Disconnect the I1 VSV for AICV connector.
      3. Remove the EFI relay from the engine room R/B.
        Fig 7: Identifying EFI Relay Location & Terminals
        G01395439Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Check the resistance between the wire harness side connectors.

        Standard (Check for open): 

        Fig 8: Specified Conditions
        G01395438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Reconnect the VSV for AICV connector.
      6. Reinstall the EFI relay.
    1. OK: GO TO NEXT STEP. 
    2. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
  4. INSPECT VACUUM TANK (See  INSPECTION  ) 
    1. OK: REPLACE ECM (See  REPLACEMENT  in ENGINE CONTROL SYSTEM ) 
    2. NG: REPAIR OR REPLACE 

OBDII scan tool (excluding Hand-held Tester): 

  1. CHECK VSV (FOR AICV) (See  INSPECTION  ) 
    1. OK: GO TO NEXT STEP. 
    2. NG: REPLACE INTAKE AIR CONTROL VALVE ASSY NO. 3 
  2. INSPECT ECM 
    1. Turn the ignition switch ON.
    2. Measure the voltage between the specified terminals of the E7 and E8 ECM connectors.
      Fig 9: Measuring Voltage Between Specified Terminals Of E7 And E8 ECM Connectors
      G01395441Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Voltage: 

      Fig 10: Specified Conditions
      G01395440Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. OK: GO TO NEXT STEP. 
    2. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 
  3. INSPECT VACUUM TANK (See  INSPECTION  ) 
    1. OK: GO TO NEXT STEP. 
    2. NG: REPAIR OR REPLACE 
  4. CHECK AND REPLACE HARNESS AND CONNECTOR (VSV FOR AICV - ECM, VSV FOR AICV - EFI RELAY) 
    1. Check the wire harness between the VSV for AICV connector and the ECM connector.
      1. Disconnect the I1 VSV for AICV connector.
      2. Disconnect the E8 ECM connector.
      3. Check the resistance between the wire harness side connectors.
        Fig 11: Identifying VSV For AICV Connector Terminals
        G01395444Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Fig 12: Identifying ECM E8 Connector Terminals
        G01395445Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard (Check for open): 

        Fig 13: Specified Conditions
        G01395442Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard (Check for short): 

        Fig 14: Specified Conditions
        G01395443Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Reconnect the VSV for AICV connector.
      5. Reconnect the ECM connector.
    2. Check the wire harness between the VSV for AICV and the EFI relay.
      1. Inspect the EFI No. 2 fuse.
        • Remove the EFI No. 2 fuse from the fusible link block.
        • Check for continuity in the EFI No. 2 fuse.
          1. Standard: Continuity 
        • Reinstall the EFI No. 2 fuse.
      2. Disconnect the I1 VSV for AICV connector.
      3. Remove the EFI relay from the engine room R/B.
        Fig 15: Identifying EFI Relay Location & Terminals
        G01395447Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      4. Check the resistance between the wire harness side connectors.

        Standard (Check for open): 

        Fig 16: Specified Conditions
        G01395446Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      5. Reconnect the VSV for AICV connector.
      6. Reinstall the EFI relay.
    1. OK: REPLACE ECM (See  REPLACEMENT  in ENGINE CONTROL SYSTEM ) 
    2. NG: REPAIR OR REPLACE HARNESS OR CONNECTOR. 
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