Toyota Tundra 2005 Service - Repair - Maintenance page 1993

Disconnect
SFI (2UZ−FE) − ACOUSTIC CONTROL INDUCTION SYSTEM (ACIS)
ACOUSTIC CONTROL INDUCTION
SYSTEM (ACIS)
ON−VEHICLE INSPECTION
INSPECT INTAKE AIR CONTROL VALVE OPERATION
(a) Start the engine.
(b) While the engine idling, check that the actuator rod
moves.
B17508
(c) Disconnect the VSV connector, and check that the actua-
tor rod is returned.
If the operation is not as specified, inspect the intake air control
valve, VSV and ECM.
B17509
SF−51
SF0PD−04