Circuit Description

WARNING: This page is about a different car, the 2004 Toyota 4Runner. However, it is still accessible from the selected car via links, so may be relevant.

This is a driving circuit of the A/C magnetic clutch and controlled by the ECU terminal below.

ACS of the A/C amplifier: Output the A/C switch condition "ON" or "OFF".
THE of A/C amplifier: Output the request signal to drive the magnetic clutch, and send it to ECM.
ACMG of ECM: Operates the cooler relay assy and drive the magnetic clutch.