Thread: Older ecu's internal battery?
05-02-2015, 01:46 PM #1
Older ecu's internal battery?
I have an 05 rxp motor in my conversion and it keeps thinking that it has a depth finder and compass. This has happened in the past after winter storage with the battery removed, and I assumed it was normal. Just reset it with candoo and it was good for the season. Now it's happening every time I start it up after a candoo reset. 5 times so far in the past 3 weeks.
Other codes that I force, like unplugging a coil stay reset. Do these things have an internal battery that can go bad? Or is there some other place I can check? It's an 05, built in 04, and has almost 250 hours on the ecu.
I don't care too much about the codes, just don't want to have the thing crap out on me and leave me stranded.
05-02-2015, 01:50 PM #2
- Join Date
- May 2012
sounds like it's crapping out to me.
05-02-2015, 09:05 PM #3
Those settings are actually in the MPEM up to the 06 model... Not the ECU... In 07 they moved them to the ECU.
05-02-2015, 09:15 PM #4
Interesting. Thanks for the tip. There is a code for the can bus communication or whatever it's called but the candoo says to disregard. Maybe I need to dig deeper. Any advice on where to check?
05-03-2015, 11:32 AM #5
- Join Date
- May 2008
- Elephant Butte New Mexico
like all flashable memory, there will be a limit on how many times you can write to them. Not aware of this issue, but I have heard about the disconnected battery and the inability for the 05's to retain memory. When a fault is detected, it will load fixed code from a read only memory and use that.
I would check the charging system for stray ac due to a failing rectifier..that kind of electrical noise can glitch the computer and make it run home to mama for default values.
you could always add the depth finder and compass... right<ducking>
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