IACV Control VSV Circuit

CIRCUIT DESCRIPTION




This circuit opens and closes the Intake Air Control Valve (IACV) 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 60° or more, the ECM turns the VSV ON and closes the IACV. At all the other time, the VSV is OFF and the IACV is open.

Wiring Diagram:

INSPECTION PROCEDURE

Step 1 - 2:

Step 3:

Hand-held tester

Step 1 - 2:

Step 3:

OBD II scan tool (excluding Hand-held tester)