Air Intake Control Circuit: Procedure

1. Inspect the VSV for air intake control valve. Refer to ON-VEHICLE INSPECTION - Step 3 .

NG → REPLACE VSV (FOR AIR INTAKE CONTROL VALVE) 

OK: Go to next step 

1. Disconnect the VSV for air intake control valve connector.
   Fig 1: Identifying Air Intake Control Valve VSV Connector A60

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

   Standard Voltage

   Tester Connection	Switch Condition	Specified Condition
   2 - Body ground	Engine switch on (IG)	11 to 14 V

4. Reconnect the VSV connector.

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

OK: Go to next step 

1. Disconnect the VSV for air intake control valve connector.
   Fig 2: Identifying VSV Connector A60 And ECM Connector E3

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance (Check for Open)

   Tester Connection	Condition	Specified Condition
   A60-1 (VSV for AICV) - E3-8 (AICV)	Always	Below 1 Ω

   Standard Resistance (Check for Short)

   Tester Connection	Condition	Specified Condition
   A60-1 (VSV for AICV) or E3-8 (AICV) - Body ground	Always	10 kΩ or higher

4. Reconnect the ECM connector.
5. Reconnect the VSV connector.

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

OK: Go to next step 

1. Inspect the intake air control valve.

NG → REPLACE AIR CLEANER CASE 

OK → See step   4