ACIS Control Circuit [07/2015 - ]: Procedure

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 / Activate the VSV for Intake Control.
5. Check if operating noise can be heard when operating the intake air control valve assembly using the Techstream.

   OK

   Operating noise can be heard.

Result:  OK

OK 

PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE 

(Refer to PROBLEM SYMPTOMS TABLE [07/2015 - 08/2016] Refer to PROBLEM SYMPTOMS TABLE [08/2016 - ] )

Result:  NG

NG 

See step  2

1. Inspect the intake air surge tank assembly (intake air control valve assembly) (Refer to ON-VEHICLE INSPECTION [07/2015 - ] ).

Result:  NG

NG 

REPLACE INTAKE AIR SURGE TANK ASSEMBLY 

(Refer to REMOVAL [07/2015 - ] )

Result:  OK

OK 

See step  3

1. Disconnect the intake air control valve assembly connector.

   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	Condition	Specified Condition
   D42-2 - Body ground	Engine switch on (IG)	11 to 14 V

   TEXT IN ILLUSTRATION
   
   

   *a	Front view of wire harness connector (to Intake Air Control Valve Assembly)

Result:  NG

NG 

See step  5

Result:  OK

OK 

See step  4

1. Disconnect the intake air control valve assembly 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
   D42-1 - D23-47 (ACIS)	Always	Below 1 Ω
   D42-1 or D23-47 (ACIS) - Body ground	Always	10 kΩ or higher

Result:  OK

OK 

REPLACE ECM 

(Refer to REMOVAL [07/2015 - ] )

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Remove the No. 1 integration relay from the engine room relay block and junction block assembly.
2. Disconnect the intake air control valve assembly connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   1A-8 - D42-2	Always	Below 1 Ω
   1A-8 or D42-2 - Body ground	Always	10 kΩ or higher

Result:  OK

OK 

GO TO ECM POWER SOURCE CIRCUIT 

(Refer to ECM Power Source Circuit [07/2015 - ] )

Result:  NG

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR