AEM 30-71XX Infinity Stand-Alone Programmable Engine Mangement System Full Manual - Manual (Page 251)

Tuning Guide 245
© 2014 AEM Performance Electronics
To understand how the solenoid becomes a variable air flow restricting valve to meet a specific
wastegate position, note the following duty cycle signal examples. The oscilloscope trace below
shows a 30Hz, 50% duty cycle signal coming from the Infinity ECU. The solenoid will be ON when
the signal is low and OFF when the signal is high.
The oscilloscope trace below shows a 30Hz, 20% duty cycle signal. The solenoid will be ON
when the signal is low (20% of the time) and OFF when the signal is high (80% of the time).