RV News RVBusiness 2021 Top 10 RVs of the Year, plus 56 additional debuts and must-see units → ×

Thread Tools Display Modes
Old 11-28-2020, 07:13 AM   #1
Junior Member
Join Date: Oct 2020
Posts: 18
28SS Firefly I/O (G12) Board location

Our Firefly has ceased being able to see that the parking brake is set. Luckily, since slide and levelers have their own independent controllers, with apparently independent, parking brake inputs they're working from their respective panels. They just can't be controlled through multiplex. The awning, however, will not extend.

I'm hoping it's just a loose terminal on the board. I just can't find the board.

- Matt
WeQuit is offline   Reply With Quote
Old 11-30-2020, 12:00 PM   #2
Motorized GM
Join Date: Nov 2007
Location: Bristol, IN
Posts: 14,722
FYI on the newer RAM's, the parking break is now on their CANbus system....so it is a digital signal. It requires the Key to be in the ON position to see it.

So you are not getting a park brake signal with the key in the ON position?

I do know, we have a Y-cable now that is supposed to resolve this by getting it from a switch and NOT the CANbus.
Please post questions as a "New Thread" (not private message) so that others can benefit from the answers. Use Private Messages for sensitive information only. Owners manuals are available online and via iPhone/Android Apps.https://www.dynamaxcorp.com/OnlineManual.aspx Don't forget to subscribe to our YouTube page for "How To" videos and updates https://www.youtube.com/c/DynamaxRVs/
bclemens is offline   Reply With Quote
Old 11-30-2020, 12:31 PM   #3
Junior Member
Join Date: Oct 2020
Posts: 18
We're pretty much fresh off the line, so should have the Y-cable installed. Awning behaved as such initially (RAM off, awning extended no problem). Slides and levelers still behave that way from their own control panels. Its just that Firefly can't see parking brake = ON anymore. I did try all key positions I could come up with just to see as part of my troubleshooting (key in ACC, key in On without brake so no engine start and engine start). I couldn't coax the awning to extend, but did manage to convince the levelers we were about to do something real dumb and they retracted.

As a side note, we do have 12V to awning because pressing retract does momentarily roll it up against its limit switch. Also, in the Firefly diagnostics screen it never shows the parking brake input coming on. So, I'm positive its something between RAM switch and Firefly I/O. I'll also try the key position test one more time when we get back to the RV Friday.

WeQuit is offline   Reply With Quote

cat, location

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

» Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by Forest River, Inc. or any of its affiliates. This is an independent, unofficial site.

All times are GMT -5. The time now is 03:04 PM.