Inspection Procedure

1. Disconnect the vacuum hose.
2. Connect the intelligent tester to the DLC3.
3. Turn the ignition switch ON and push the intelligent tester main switch ON.
4. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / INTAKE CTL VSV1. Operate the VSV.
5. Check the VSV operation when it is operated by the intelligent tester.

   Standard

   Fig 1: Checking VSV Operation

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   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   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

OK: Go to step  6

NG: GO TO NEXT STEP

1. Check that air flows from port E to the air filter.
   Fig 2: Checking Air Flows

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Apply battery positive voltage across the terminals.
3. Check that air flows from port E to port F.

NG: REPLACE VSV FOR IAC VALVE NO. 2

Fig 3: Applying Battery Positive Voltage Across Terminals

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OK: GO TO NEXT STEP

1. Check the wire harness between the VSV and ECM.
   1. Disconnect the V2 VSV connector.
   2. Disconnect the E7 ECM connector.
   3. Measure the resistance of the wire harness side connectors.

      Standard resistance

      TESTER CONNECTION AND SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      V2-2 - E7-15 (ACIS)	Below 1 Ω
      V2-2 or E7-15 (ACIS) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 4: Identifying V2 VSV Connector

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OK: GO TO NEXT STEP

1. Remove the EFI No. 2 fuse from the engine room R/B.
2. Measure the resistance of the EFI No. 2 fuse.

   Standard resistance: Below 1 Ω

3. Reinstall the EFI No. 2 fuse.

NG: REPLACE EFI NO. 2 FUSE

Fig 5: Removing EFI No. 2 Fuse From Engine Room R/B

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OK: GO TO NEXT STEP

1. Check the wire harness between the VSV and EFI relay.
   1. Disconnect the V2 VSV connector.
   2. Remove the EFI relay from the engine room J/B.
   3. Check the resistance of the wire harness side connectors.

      Standard resistance

      TESTER CONNECTION AND SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      V2-1 - J/B EFI relay terminal 3	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig 6: Identifying V2 VSV Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP

Check that the vacuum hoses are:

• Connected correctly.
• Are not loose or disconnected.
• Do not have cracks, holes or damage.

NG: REPAIR OR REPLACE VACUUM HOSES

OK: GO TO NEXT STEP

1. Inspect the intake air control valve. (See INSPECTION )

NG: REPLACE INTAKE AIR CONTROL VALVE

OK: REPLACE ECM

1. Disconnect the VSV connector.
2. Check operation of the VSV when battery positive voltage is applied to the terminals of the VSV.

   Standard:

   Battery positive voltage is not applied:

   Air from port E flows out through the air filter. Battery positive voltage is applied:

   Air from port E flows out through port F.

NG: REPLACE VSV FOR IAC VALVE NO. 2

Fig 7: Checking Operation Of VSV

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP

1. Start the engine.
2. Measure the voltage of the ECM E7 connector.

   Standard voltage

   TESTER CONNECTION AND SPECIFIED CONDITION
   
   

   Tester Connection	Condition	Specified Condition
   E7-15 (ACIS) - E7-1 (E1)	Engine speed is 4,000 RPM or less Throttle valve opening angle is 30° or more	9 to 14 V

OK: Go to step  6

Fig 8: Measuring Voltage Of ECM E7 Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG: GO TO NEXT STEP

1. Check the wire harness between the VSV and ECM.
   1. Disconnect the V2 VSV connector.
   2. Disconnect the E7 ECM connector.
   3. Measure the resistance of the wire harness side connectors.

      Standard resistance

      TESTER CONNECTION AND SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      V2-2 - E7-15 (ACIS)	Below 1 Ω
      V2-2 or E7-15 (ACIS) - Body ground	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 9: Identifying V2 VSV Connector

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP

1. Remove the EFI No. 2 fuse from the engine room R/B.
2. Measure the resistance of the EFI No. 2 fuse.

   Standard resistance: Below 1 Ω

3. Reinstall the EFI No. 2 fuse.

NG: REPLACE EFI NO. 2 FUSE

Fig 10: Removing EFI No. 2 Fuse From Engine Room R/B

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP

1. Check the wire harness between the VSV and EFI relay.
   1. Disconnect the V2 VSV connector.
   2. Remove the EFI relay from the engine room J/B.
   3. Check the resistance of the wire harness side connectors.

      Standard resistance

      TESTER CONNECTION AND SPECIFIED CONDITION
      
      

      Tester Connection	Specified Condition
      V2-1 - J/B EFI relay terminal 3	Below 1 Ω

NG: REPAIR OR REPLACE HARNESS AND CONNECTOR

Fig 11: Removing EFI Relay From Engine Room J/B

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: GO TO NEXT STEP

Check that the vacuum hoses are:

• Connected correctly.
• Are not loose or disconnected.
• Do not have cracks, holes or damage.

NG: REPAIR OR REPLACE VACUUM HOSES

OK: GO TO NEXT STEP

1. Inspect the intake air control valve. (See INSPECTION )

NG: REPLACE INTAKE AIR CONTROL VALVE

OK: REPLACE ECM