ACIS Control Circuit: Procedure

1. Connect Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Select the following menu items: Powertrain / Engine / Active Test / Activate the VSV for Intake Control.
5. Check if operating noise can be heard when operating the intake air control valve using the Techstream.

   OK

   Operational noise can be heard.

NG → See step   2 

OK → See step   5 

1. Inspect the intake air control valve. Refer to INSPECTION - Step 1 .

NG → REPLACE INTAKE AIR SURGE TANK 

OK: Go to next step 

1. Disconnect the intake air control valve connector.
   Fig 1: Identifying B18 Intake Air Control Valve Connector

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the ignition switch to ON.
3. Measure the voltage according to the value(s) on the table below.

   Standard voltage

   Tester Connection	Switch Condition	Specified Condition
   B18-2 - Body ground	Ignition switch ON	11 to 14 V

4. Reconnect the intake air control valve connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 2 FUSE - INTAKE AIR CONTROL VALVE) 

OK: Go to next step 

1. Check the wire harness and connectors between the intake air control valve and ECM.
   1. Disconnect the intake air control valve connector.
   2. Disconnect the ECM connector.
   3. Measure the resistance between the terminals of the intake air control valve connector and ECM connector.

      Standard resistance (Check for open)

      Tester Connection	Condition	Specified Condition
      B18-1 - B50-107 (ACIS)	Always	Below 1 Ω

      Standard resistance (Check for short)

      Tester Connection	Condition	Specified Condition
      B18-1 or B50-107 (ACIS) - Body ground	Always	10 kΩ or higher

   4. Reconnect the intake air control valve connector.
   5. Reconnect the ECM connector.

NG → REPAIR OR REPLACE HARNESS OR CONNECTOR (INTAKE AIR CONTROL VALVE - ECM) 

OK → See step   6