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Home >> Lexus >> 2001 >> ES 300 V6-3.0L (1MZ-FE) >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> IACV Control Circuit
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IACV Control Circuit

CIRCUIT DESCRIPTION




This circuit opens and closes the IACV (Intake Air Control Valve) in response to the engine load in order to increase the intake efficiency (ACIS: Acoustic Control Induction System).

When the engine speed is 3,700 rpm or less and the throttle valve opening angle is 30° or more, the ECM turns the two VSV ON or OFF and operate the IACV.

Wiring Diagram:






INSPECTION PROCEDURE

Steps 1 - 3:




LEXUS hand-held tester:

Steps 1 - 3:




OBD II scan tool (excluding LEXUS hand-held tester):
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