Air Intake Control Circuit [09/2014 - ]: Procedure

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Powertrain / Engine / Active Test / Active Test the VSV for ACIS
5. Check for operation of the VSV when the VSV is operated using the Techstream.

   Standard

   Techstream Connection	Specified Condition
   ON	Air from port E flows out through port F
   OFF	Air from port E flows out through the air filter

   Result

   Proceed to
   OK
   NG

Result: 

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE [09/2014 - 11/2017]  , or refer to  PROBLEM SYMPTOMS TABLE [11/2017 - 03/2019]  , or refer to  PROBLEM SYMPTOMS TABLE [03/2019 - ] 

Result: 

NG 

See step  2

1. Inspect the vacuum switching valve (for air intake control valve).

   Refer to PROCEDURE - Step 4

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE VACUUM SWITCHING VALVE (FOR AIR INTAKE CONTROL VALVE) 

Result: 

OK 

See step  3

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Disconnect the vacuum switching valve (for air intake control valve) connector.
2. Turn the engine switch on (IG).
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A4-2 - Body ground	Engine switch on (IG)	11 to 14 V

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  6

Result: 

OK 

See step  4

1. Disconnect the vacuum switching valve (for air intake control valve) connector.
2. Disconnect the ECM connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A4-1 - F1-7 (AICV)	Always	Below 1 Ω
   A4-1 or F1-7 (AICV) - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  5

1. Inspect the vacuum surge tank.

   Refer to PROCEDURE - Step 3

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE ECM. Refer to  REMOVAL [09/2014 - ] 

Result: 

NG 

REPAIR OR REPLACE AIR CLEANER ASSEMBLY 

1. Disconnect the semiconductor pwr integration ECU connector.
2. Disconnect the vacuum switching valve (for air intake control valve) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   2G-1 - A4-2	Always	Below 1 Ω
   2G-1 or A4-2 - Body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

GO TO ECM POWER SOURCE CIRCUIT. Refer to  ECM Power Source Circuit [09/2014 - ]  

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR