Inspection Procedure

1. Connect Techstream to the DLC3.
2. Start the engine and turn Techstream on.
3. Select the following menu items: Powertrain / Engine and ECT / Active Test / Activate the VSV for Intake Control.

   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 B58 air intake valve connector.
Fig 1: Identifying B58 Air Intake Valve Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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 

OK: Go to next step 

Fig 2: Identifying Wire Harness (Intake Air Control Valve - ECM, Integration Relay)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the EFI No. 1 fuse from the engine room No. 1 relay block.
2. Check the EFI No. 1 fuse.
3. Reinstall the EFI No. 1 fuse.
4. Disconnect the B58 intake air control valve connector.
5. Disconnect the B30 ECM connector.
6. Remove the integration relay from the engine room No. 1 relay block.
7. Disconnect the 1A integration relay connector.
8. Measure the resistance of the wire harness side connectors.

   Standard resistance 

   TESTER CONNECTION SPECIFIED CONDITION CHART
   
   

   Tester Connection	Specified Condition
   B58-1 - B30-107 (ACIS)	Below 1 Ω
   B58-2 - 1A-4	Below 1 Ω
   B58-1 or B30-107 (ACIS) - Body ground	10 kΩ or higher
   B58-2 or 1A-4 - Body ground	10 kΩ or higher

9. Reconnect the intake air control valve connector.
10. Reconnect the ECM connector.
11. Reconnect the integration relay connector.
12. Reinstall the integration relay.

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE ECM