ACIS System Check
WARNING: This page is about a different car, the 1995 Lexus GS 300. However, it is still accessible from the selected car via links, so may be relevant.
- Connect vacuum gauge between IACV actuator and VSV. See Fig 1. See COMPONENT LOCATIONS under INTRODUCTION. Start engine. With engine idling, gauge needle should indicate no vacuum.
- While snapping throttle fully open and releasing it, IACV actuator rod should move, and gauge needle should quickly fluctuate to the following specification:
- About 10 in. Hg or more.
- System is okay if it operates as specified. If system does not operate as specified, perform ACIS CIRCUITS test.