Inspection Procedure

1. Connect Techstream to the DLC3.
2. Start the engine and turn the tester on.
3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VSV for Intake Control.
4. Check if operating noise can be heard when operating the intake control valve using Techstream.

OK: Operating noise can be heard. 

OK: CHECK FOR INTERMITTENT PROBLEMS 

NG: Go to Next Step 

1. Disconnect the VCV ACIS connector.
2. Apply battery voltage between the terminals of the air intake valve connector.
3. Check air intake valve operation.
Fig 1: Identifying VCV ACIS Connector Terminal
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Operating noise can be heard. 

NG: REPLACE INTAKE AIR SURGE TANK 

OK: Go to Next Step 

1. Check the wire harness between the intake air control connector and the ECM connector.
   1. Disconnect the VCV ACIS connector.
   2. Disconnect the E5 ECM connector.
   3. Measure the resistance according to the value (s) in the table below.

   Standard resistance (Check for open) 

   RESISTANCE SPECIFICATION CHART
   
   

   Tester Connection	Specified Condition
   VCV ACIS (E50-2) - ACIS (E5-3)	Below 1 Ω

   Standard resistance (Check for short) 

   RESISTANCE SPECIFICATION CHART
   
   

   Tester Connection	Specified Condition
   VCV ACIS (E50-2) or ACIS (E5-3) - Body ground	10 kΩ or higher

2. Check the wire harness between the VCV ACIS connector and the EFI No. 2 fuse.
   1. Disconnect the air intake valve connector.
   2. Remove the EFI No. 2 fuse from the engine room R/B No. 2.
   3. Measure the resistance according to the value (s) in the table below.

   Standard resistance (Check for open) 

   RESISTANCE SPECIFICATION CHART
   
   

   Tester Connection	Specified Condition
   VCV ACIS (E50-1) - EFI No. 2 fuse (2) of Engine room No. 2 relay block	Below 1 Ω

   Fig 2: Identifying VCV ACIS Connector Terminal E50 And ECM Connector E5

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

   OK: REPLACE ECM