AEM 30-6905 Universal Programmable EMS-4 - Manual (Page 199)

Page 199 of 279 EMS-4 Install and Tuning Guide_Rev 1.6
EMS-4 GPIOs
GPIO as PWM driver output example
The example above illustrates a GPIO as a PWM duty cycle output such as an idle air control
solenoid or boost control solenoid.
The power input to the solenoid must not be connected directly to the battery or any full
time voltage source. The power should come from a switched fused supply. See the
EMS-4 System Diagram for more information.