Inspection Procedure
NOTE:
Inspect the fuses for circuits related to this system before performing the following inspection procedure.
- PERFORM ACTIVE TEST USING TECHSTREAM (ACTIVATE THE VSV FOR INTAKE CONTROL)
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON.
- Turn the Techstream on.
- Enter the following menus: Powertrain / Engine / Active Test / Activate the VSV for Intake Control.
- Check if operating noise can be heard when operating the intake air control valve assembly using the Techstream.
OK:
Operating noise can be heard .
NG: Go to step 2
OK: PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
- CHECK INTAKE AIR SURGE TANK ASSEMBLY (INTAKE AIR CONTROL VALVE ASSEMBLY OPERATION)
- Disconnect the intake air control valve assembly connector.
- Apply battery voltage between the terminals of the intake air control valve assembly connector.
Text in Illustration
ILLUSTRATION LEGEND*1 Component without harness connected (Intake Air Control Valve Assembly) - Check the intake air control valve assembly operation.
OK:
Operating noise can be heard .
- Reconnect the intake air control valve assembly connector.
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE INTAKE AIR SURGE TANK ASSEMBLY (See REMOVAL )
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (INTAKE AIR CONTROL VALVE ASSEMBLY VOLTAGE)
- Disconnect the intake air control valve assembly connector.
- Turn the ignition switch to ON.
- Measure the voltage according to the value(s) in the table below.
Standard Voltage
TESTER CONNECTION SPECIFIED CONDITIONS CHARTTester Connection Switch Condition Specified Condition B24-2 - Body ground Ignition switch ON 11 to 14 V Text in Illustration
ILLUSTRATION LEGEND*1 Front view of wire harness connector (to Intake Air Control Valve Assembly) - Reconnect the intake air control valve assembly connector.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (ENGINE ROOM JUNCTION BLOCK - INTAKE AIR CONTROL VALVE)
OK: Go to next step
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
- CHECK HARNESS AND CONNECTOR (INTAKE AIR CONTROL VALVE ASSEMBLY - ECM)
- Disconnect the intake air control valve assembly 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 CONDITIONS CHARTTester Connection Condition Specified Condition B24-1 - B39-62 (ACIS) Always Below 1 Ω Standard Resistance (Check for Short)
TESTER CONNECTION SPECIFIED CONDITIONS CHARTTester Connection Condition Specified Condition B24-1 or B39-62 (ACIS) - Body ground Always 10 kΩ or higher Text in Illustration
ILLUSTRATION LEGEND*1 Front view of wire harness connector (to Intake Air Control Valve Assembly) *2 Front view of wire harness connector (to ECM) - Reconnect the intake air control valve assembly connector.
- Reconnect the ECM connector.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (INTAKE AIR CONTROL VALVE ASSEMBLY - ECM)
OK: REPLACE ECM (See REMOVAL )