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Inspection Procedure

PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE VSV FOR ACIS)
1. Connect Techstream to the DLC3.
2. Start the engine and turn the tester on.
3. Select the following menu items: Powertrain/Engine/Active Test/Activate the VSV for AICS. Operate the VSV for AICS.
  OK:
  
  Operational noise can be heard.
  
  OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
  
  NG: Go to next step
CHECK INTAKE AIR CONTROL VALVE (OPERATION)
1. Disconnect the VSV for ACIS connector.
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
  
  Fig 1: Identifying B18 VSV For ACIS Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK: Go to next step

INSPECT TERMINAL VOLTAGE (INTAKE AIR CONTROL VALVE)

Disconnect the VSV for ACIS connector.
Turn the ignition switch to ON.

Measure the voltage according to the value(s) on the table below.

Standard voltage

VOLTAGE SPECIFIED CONDITION

Tester Connection	Specified Condition
2 - Body ground	9 to 14 V

Fig 2: Identifying B18 VSV For ACIS Connector

G06227227

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

OK: Go to next step

CHECK HARNESS AND CONNECTOR (VSV FOR ACIS - ECM, VSV FOR ACIS - EFI RELAY)

Check the wire harness and connectors between the VSV for ACIS and ECM.

Disconnect the VSV for ACIS connector.
Disconnect the ECM connector.

Measure the resistance between the terminals of the VSV for ACIS connector and ECM connector.

Standard resistance (Check for open)

RESISTANCE SPECIFIED CONDITIONS

Tester Connections	Specified Conditions
VSV for ACIS (B18-1) - ACIS (B50-107)	Below 1 Ω

Standard resistance (Check for short)

RESISTANCE SPECIFIED CONDITIONS

Tester Connections	Specified Conditions
VSV for ACIS (B18-1) or ACIS (B50-107) - Body ground	10 kΩ or higher

Reconnect the VSV for ACIS connector.
Reconnect the ECM connector.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 3: Identifying B18 VSV For ACIS And B50 ECM Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE ECM (See REMOVAL )