Circuit Operation
- The idle air control motor power is supplied from the MFI relay (terminal 4).
- The ECM (terminals 4, 5, 17, 18 - M/T) or PCM (terminals 14, 15, 28, 29 - A/T) drives the stepper motor by sequentially turning "ON" the power transistors in the ECM (M/T) or PCM (A/T) and providing ground to the idle air control motor (terminals 1, 3, 4, 6).