Water/Methanol Injection V2
17
© 2020 AEM Performance Electronics
Fuse
The controller has an externally accessible fuse. The controller itself will turn on and function, but the pump will
not run without the fuse. If the controller is reporting an open circuit it may be that the fuse has blown or is not
installed correctly. Use a 15 amp fast blow fuse for replacement purposes.
TEST Button
The TEST button feature is available to test the system's functionality. This feature should be used
ONLY
with
the nozzle disconnected from the engine. This is to prevent unintentional pumping of fluid into the engine. To
operate the TEST button, press and hold. The pump speed will gradually increase from zero to full speed within
3 seconds and then remain at full speed for another 3 seconds before stopping. Flow should begin gradually
and then hold at full pressure for a total test time of 6 seconds.
Short Circuit Self-Diagnostics
There are two modes of pump-driver short circuit protection available. One can detect a short at any time but
produces a slight buzzing in the pump. This should not be noticeable under most conditions but can be turned
off if it is objectionable. If turned off, a short circuit can only be detected when the pump is running.
To enable or disable this diagnostic (and the buzzing): Press and hold the TEST button while applying power to
the controller. The change is acknowledged by a single long flash of the status LED output and the external
LED. Once the button is released the controller will continue to function normally. You can also tell what mode
has been selected by listening for the buzzing sound in the pump. Repeating this operation will toggle between
the two modes.
