PWM IAC Control Module

An easy solution for controlling a traditional 4-wire stepper idle air control valve from an ECU using a standard ground-switching PWM output.
 
The MaxxECU PWM to Stepper IAC Control Module – PN 2259 converts a PWM idle-control signal into the proper control needed to operate a 4-wire stepper motor. This is especially useful when your ECU does not have native stepper-motor outputs but you still want to retain a stepper-style idle valve.
 
Kit Includes connector kit. 
 
Tested with GM, Marelli, and Renault-style 4-wire stepper motors, and designed to work with virtually any standard automotive 4-wire idle stepper valve.
 
Connections include:
Coil 1 Positive / Negative
Coil 2 Positive / Negative
PWM Input
Switched +12V
Ground
 
 
A simple way to add reliable stepper IAC control to MaxxECU and other ECU installations using a conventional PWM idle output.