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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 Techstream on.
3. Select the following menu items: Powertrain / Engine and ECT / Active Test / Activate the VSV for Intake Control.
  OK: Operating 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 B58 intake air control valve connector.
2. Apply battery voltage to the terminals of the intake air control valve connector.
3. Check the intake air control valve operation.
  OK: Operating noise can be heard.
  
  NG: REPLACE INTAKE AIR SURGE TANK
  
  Fig 1: Identifying B58 Intake Air Control Valve Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  OK: Go to next step

CHECK WIRE HARNESS (INTAKE AIR CONTROL VALVE - ECM, INTEGRATION RELAY)

Remove the EFI No. 1 fuse from the engine room No. 1 relay block.
Check the EFI No. 1 fuse.
Reinstall the EFI No. 1 fuse.
Disconnect the B58 intake air control valve connector.
Disconnect the B30 ECM connector.
Remove the integration relay from the engine room No. 1 relay block.
Disconnect the 1A integration relay connector.

Measure the resistance of the wire harness side connectors.

Standard resistance

RESISTANCE SPECIFICATION

Tester Connection	Specified Condition
B58-1 - B30-62 (ACIS)	Below 1 Ω
B58-2 - 1A-4	Below 1 Ω
B58-1 or B30-62 (ACIS) - Body ground	10 kΩ or higher
B58-2 or 1A-4 - Body ground	10 kΩ or higher

Reconnect the intake air control valve connector.
Reconnect the ECM connector.
Reconnect the integration relay connector.
Reinstall the integration relay.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR

Fig 2: Identifying EFI No. 1 Fuse, B58 Intake Air Control Valve Connector And B30 ECM Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: REPLACE ECM (See REMOVAL )