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 AICS)
- Disconnect the 2 hoses from the VSV for air intake control valve.
- Turn the ignition switch to ON and turn the Techstream on.
- Enter the following menus: Powertrain/Engine/Active Test/Activate the VSV for AICS.
- Check the operation of the VSV when the VSV is operated by the Techstream.
Standard
TECHSTREAM OPERATION CHARTTechstream Operation Specified Condition VSV is ON Air from port E flows out through port F VSV is OFF Air from port E flows out through the air filter NG: Go to step 4
OK: Go to next step
- INSPECT VACUUM TANK
- Inspect the vacuum tank (See VACUUM TANK
).
NG: REPLACE AIR CLEANER CAP SUB-ASSEMBLY
OK: Go to next step
- Inspect the vacuum tank (See VACUUM TANK
).
- INSPECT INTAKE AIR CONTROL VALVE ASSEMBLY
- Inspect the intake air control valve assembly (See INTAKE AIR CONTROL VALVE (FOR INTAKE AIR CONTROL SYSTEM)
).
NG: REPLACE NO. 3 INTAKE AIR CONTROL VALVE ASSEMBLY
OK: PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE (See PROBLEM SYMPTOMS TABLE )
- Inspect the intake air control valve assembly (See INTAKE AIR CONTROL VALVE (FOR INTAKE AIR CONTROL SYSTEM)
).
- INSPECT VACUUM SWITCHING VALVE (VSV FOR AICV)
- Inspect the VSV for air intake control valve (See VACUUM SWITCHING VALVE (FOR INTAKE AIR CONTROL SYSTEM)
).
NG: REPLACE VACUUM SWITCHING VALVE (See ON-VEHICLE INSPECTION )
OK: Go to next step
- Inspect the VSV for air intake control valve (See VACUUM SWITCHING VALVE (FOR INTAKE AIR CONTROL SYSTEM)
).
- CHECK HARNESS AND CONNECTOR (VSV FOR AICV VOLTAGE)
- Disconnect the VSV for air intake control valve connector.
- Turn the ignition switch to ON.
- Measure the voltage according to the value (s) in the table below.
Standard Voltage
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Switch Condition Specified Condition A10-1 - Body ground Ignition switch ON 11 to 14 V NG: REPAIR OR REPLACE HARNESS OR CONNECTOR (EFI NO. 3 FUSE - VSV FOR AIR INTAKE CONTROL VALVE)
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: Go to next step
- CHECK HARNESS AND CONNECTOR (VSV FOR AIR INTAKE CONTROL VALVE - ECM)
- Disconnect the VSV for air intake control valve 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 CONDITION CHARTTester Connection Condition Specified Condition A10-2-B51-35 (AICV) Always Below 1 Ω Standard Resistance (Check for Short)
TESTER CONNECTION SPECIFIED CONDITION CHARTTester Connection Condition Specified Condition A10-2 or B51-35 (AICV) - Body ground Always 10 kΩ or higher - Reconnect the ECM connector.
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
OK: REPLACE ECM (See INSPECTION PROCEDURE )