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Inspection Procedure

PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVE THE VSV FOR INTAKE CONTROL)
1. Connect the Techstream to the DLC3.
2. Start the engine and turn the tester on.
3. Select the following menu items: Powertrain/Engine and ECT/Active Test/Active the VSV for Intake Control.
4. Check the operation of the VSV when the intake air control is operated by the tester.
  OK:
  
  Operational noise can be heard.
  
  NG: Go to step 2
  
  OK: PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
CHECK INTAKE AIR CONTROL VALVE (OPERATION)
1. Disconnect the intake air control valve 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.
4. Reconnect the intake air control valve connector.
  NG: REPLACE INTAKE AIR SURGE TANK (See INTAKE MANIFOLD )
  
  Fig 1: Identifying Intake Air Control Valve Connector Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK: Go to next step

INSPECT TERMINAL VOLTAGE (INTAKE AIR CONTROL VALVE CONNECTOR)

Disconnect the intake air control valve connection.
Turn the ignition switch on (IG).

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

Standard voltage

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Switch Condition	Specified Condition
2 - Body ground	Ignition switch on (IG)	9 to 14 V

Reconnect the intake air control valve connector.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 3 - INTAKE AIR CONTROL VALVE)

Fig 2: Identifying Intake Air Control Valve Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step

CHECK HARNESS AND CONNECTOR (INTAKE AIR CONTROL VALVE - ECM)

Disconnect the intake air control valve connector.
Disconnect the ECM connector.

Measure the resistance according to the value(s) in the table below.

Standard resistance:

Check for open

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
B28-1 - B1-33 (ACIS)	Always	Below 1 Ω

Check for short

TESTER CONNECTION SPECIFIED CONDITION CHART

Tester Connection	Condition	Specified Condition
B28-1 or B1-33 (ACIS) - Body ground	Always	10 kΩ or higher

Reconnect the intake air control valve connector.
Reconnect the ECM connector.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (VSV FOR ACIS - ECM)

Fig 3: Identifying Intake Air Control Valve And ECM Connector Terminals
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE ECM (See REMOVAL )