Inspection Procedure

1. Disconnect the vacuum hose from port F on the vacuum switching valve (for ACIS).
2. Connect the Techstream to the DLC3.
3. Start the engine.
4. Turn the Techstream ON.
5. Enter the following menus: Powertrain / Engine / Active Test / Active the VSV for Intake Control.
6. Operate the VSV for ACIS.
7. Check the VSV air flow when switching the VSV.

   OK 

   RESISTANCE SPECIFICATION
   
   

   Test Condition	Specified Condition
   VSV is ON	Air from port E flows out through port F
   VSV is OFF	Air from port E flows out through air filter

NG:  Go to step  4

Fig 1: Checking VSV Air Flow

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to Next Step. 

NG: REPAIR OR REPLACE VACUUM HOSES 

OK: Go to Next Step. 

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

NG: REPLACE INTAKE MANIFOLD  (See REMOVAL )

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

1. Inspect the vacuum switching valve (See INSPECTION ).

NG: REPLACE VACUUM SWITCHING VALVE  (See REMOVAL )

OK: Go to Next Step. 

1. Remove the EFI No. 2 fuse from the engine room relay block.
2. Check the EFI No. 2 fuse.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   EFI NO. 2 fuse	Always	Below 1 Ω

4. Reinstall the EFI No. 2 fuse.
5. Disconnect the intake air control valve connector.
6. Disconnect the ECM connector.
7. Remove the integration relay from the engine room relay block.
8. Disconnect the 1B integration relay connector.
9. Measure the resistance according to the value(s) in the table below.

   Standard Resistance 

   RESISTANCE SPECIFICATION
   
   

   Tester Connection	Condition	Specified Condition
   D70-2 - D56-62 (ACIS)	Always	Below 1 Ω
   D70-1-1B-4	Always	Below 1 Ω
   D70-2 or D56-62 (ACIS) - Body ground	Always	10 kΩ or higher
   D70-1 or 1B-4 - Body ground	Always	10 kΩ or higher

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

Fig 2: Identifying Intake Air Control Valve Connector, ECM Connector Terminals And Integration Relay

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE ECM  (See REMOVAL  )