ACIS Control Circuit
ACIS Control CircuitDESCRIPTION
HINT: ACIS stands for "Acoustic Control Induction System".
The ECM opens and closes the Intake Air Control (IAC) valve No.2 in response to engine speed (RPM/NE). This system improves intake manifold tuning for better efficiency at low and high engine rpm. When the engine speed is 4,000 rpm or less and the throttle valve opening angle is 30 degrees or more, the ECM turns the VSV ON to operate the IAC valve.
Wiring Diagram:
INSPECTION PROCEDURE
Step 1-2:
Step 3-4:
Step 4(continued)-5:
Intelligent Tester
Step 1:
Step 2-3:
Step 3(continued)-5:
OBD II Scan Tool (excluding Intelligent Tester)