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1 ημέρα πριν · The Idle control from the AEM ems v1 sometimes works and sometimes not. I decided to open the ECU ems v1, I found this. It has 2 stepper control L9935 - Two-phase stepper motor driver. You must be logged in to view this image or video. Pins 58/59 67/68 from ISC Idle valve does have continuity.