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 For ACIS

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : GO TO STEP   4 

NG : Go to next step 

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

   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.
Fig 3: Checking Air Flows From Port E To Port F
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPLACE VSV FOR ACIS 

OK : Go to next step 

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

   Standard resistance 

   VSV FOR ACIS - ECM
   
   

   Tester Connection	Specified Condition
   V1-2 - E8-15 (ACIS)	Below 1 Ω
   V1-2 or E8-15 (ACIS) - Body ground	10 kΩ or higher

2. Check the wire harness between the VSV and EFI MAIN relay.
   1. Check the EFI No. 2 fuse.
      • Remove the EFI No. 2 fuse from the fusible link block.
      • Measure the resistance of the EFI No. 2 fuse.

        Standard resistance: 

        Below 1 Ω 

      • Reinstall the EFI No. 2 fuse.
   2. Disconnect the V2 VSV connector.
   3. Remove the EFI MAIN relay from the engine room R/B.
   4. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   VSV FOR ACIS - EFI MAIN RELAY
   
   

   Tester Connection	Specified Condition
   V1-1 - EFI MAIN relay terminal 3	Below 1 Ω

3. Install the EFI MAIN relay.
4. Reconnect the VSV connector and ECM connector.
Fig 4: Checking Harness And Connector (VSV For ACIS - ECM, VSV For ACIS - EFI Main Relay)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK : Go to next step 

Check that the vacuum hoses are:

1. Connected correctly.
2. Are not loose or disconnected.
3. 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 INTAKE AIR CONTROL SYSTEM )

NG : REPLACE INTAKE AIR CONTROL VALVE 

OK : REPLACE ECM 

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

   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. 

Fig 5: Inspecting VSV For ACIS (Operation)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

NG : REPLACE VSV FOR ACIS 

OK : Go to next step 

1. Start the engine.
2. Measure the voltage of the ECM connectors.

Standard voltage 

Fig 6: Inspecting ECM (ACIS Voltage)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK : GO TO STEP 4 

NG : Go to next step 

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

   Standard resistance 

   VSV FOR ACIS - ECM
   
   

   Tester Connection	Specified Condition
   V1-2 - E8-15 (ACIS)	Below 1 Ω
   V1-2 or E8-15 (ACIS) - Body ground	10 kΩ or higher

2. Check the wire harness between the VSV and EFI MAIN relay.
   1. Check the EFI No. 2 fuse.
      • Remove the EFI No. 2 fuse from the fusible link block.
      • Measure the resistance of the EFI No. 2 fuse.

        Standard resistance: 

        Below 1 Ω 

      • Reinstall the EFI No. 2 fuse.
   2. Disconnect the V1 VSV connector.
   3. Remove the EFI MAIN relay from the engine room R/B.
   4. Measure the resistance OF the wire harness side connectors.

   Standard resistance 

   VSV FOR ACIS - EFI MAIN RELAY
   
   

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

   Fig 7: Checking Harness And Connector (VSV For ACIS - ECM, VSV For ACIS - EFI Main)

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Install the EFI MAIN relay.
4. Reconnect the VSV connector and ECM connector.

NG : REPAIR OR REPLACE HARNESS OR CONNECTOR 

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 INTAKE INTAKE AIR CONTROL SYSTEM )

   NG : REPLACE INTAKE AIR CONTROL VALVE 

   OK : REPLACE ECM