[email protected] 0 Posted May 17, 2023 My ex bought a used 06 Rancher 400AT, that was used for one week, until it stopped shifting. Now this quad has been sitting in my driveway broken for two years, and I am sick of looking at it! I replaced the angle sensor, tested the regulator, cleaned and greased all the plugs…etc. Nothing has changed. Does the ecm need reset when changing sensors? If so, where can I find the correct procedure? It flashes 12 times. It chugs in reverse, and won’t shift out of first. One atv mechanic worked on it for a few hours, but didn’t seem interested in returning. Another ATV mechanic from an actual Honda dealer told me it’s not worth fixing…. I am personally running out of Ideas…I do believe that the ecm is bad, but don’t really want to spend the money if that’s not the whole problem. Now for the question of the hour…Does a Honda engine/trans exist, that is manual shift, and feasible to mount to this Rancher frame? I mean this Rancher looks brand spanking new…but I’ve had it with this overly complicated pos design…and am willing to throw $2k at it to make it reliable, especially looking at the price of used quads. Share this post Link to post Share on other sites
ATC4ever 1,084 Posted May 17, 2023 Did you check the shift motor? I have replaced them on that model when the brushes were worn out. Share this post Link to post Share on other sites
jeepwm69 7,719 Posted May 17, 2023 @wheelsquad is probably the most well versed in the 400AT's. See if he has an idea. Share this post Link to post Share on other sites
wheelsquad 108 Posted May 17, 2023 I don't have access at the moment to the service manual....anyone able to look up what code 12 is? Share this post Link to post Share on other sites
Fishfiles 20,147 Posted May 17, 2023 7 minutes ago, wheelsquad said: I don't have access at the moment to the service manual....anyone able to look up what code 12 is? Thanks to @balljoints for the manual : https://drive.google.com/drive/folders/1bE0Q49DVddje37NxEAD1QDj5R9HmtSSs Share this post Link to post Share on other sites
jeepwm69 7,719 Posted May 17, 2023 ECM motor driver circuit. @wheelsquad we have a huge library of FSM's in the toolbar at the top of the page. Guessing you're on mobil and downloading a file that big is a PITA on a phone, but FYI. 400 codes.pdf Share this post Link to post Share on other sites
wheelsquad 108 Posted May 17, 2023 The computer I'm on most of the time has Google Drive access blocked, and yep, pain in the rear to look on phone but that's what I just did. Pg 24-32 says to check the connections, and I can vouch from experience that one time mine got all wonky with shifting and error codes, and a loose connector was the cause. Good thing to try would be to take every connector apart, clean, and re-assemble with dielectric grease. 2 1 Share this post Link to post Share on other sites
[email protected] 0 Posted May 17, 2023 (edited) I did clean, and grease at least some of the connections, but I am unsure if I unplugged everything. I will go over it again when I have enough time to be thorough. Thanks to everyone taking the time to give their input. does the ecm need reset after changing the angle sensor? I did change the sensor but am unsure exactly how to reset. Edited May 17, 2023 by [email protected] Share this post Link to post Share on other sites
[email protected] 0 Posted May 17, 2023 3 hours ago, wheelsquad said: The computer I'm on most of the time has Google Drive access blocked, and yep, pain in the rear to look on phone but that's what I just did. Pg 24-32 says to check the connections, and I can vouch from experience that one time mine got all wonky with shifting and error codes, and a loose connector was the cause. Good thing to try would be to take every connector apart, clean, and re-assemble with dielectric grease. Actually now I’m second guessing myself. I can’t remember if it was 12 or 13 blinks…but I could have sworn it was an ECM code, not the ECM drive motor. it was well over a year ago since I’ve even had a battery in it. Luckily I kept the battery charged. when I get off work, I’ll check. Share this post Link to post Share on other sites
toodeep 1,759 Posted May 18, 2023 5 hours ago, [email protected] said: does the ecm need reset after changing the angle sensor? The ECM resets every time the key switch is cycled. You will need to reinitialize the system when replacing those components though. 2 Share this post Link to post Share on other sites
wheelsquad 108 Posted May 18, 2023 Yep definitely needs a re-initializing after replacing any of those parts. The service manual defines pretty well replacement of which parts require it. 1 Share this post Link to post Share on other sites
[email protected] 0 Posted May 18, 2023 Could someone please tell me where to find the directions for the reinitialization process? 30 minutes into reading the manual, my phone crashed. Extremely frustrating. Share this post Link to post Share on other sites
[email protected] 0 Posted May 18, 2023 (edited) Found it. Looks like a pretty immensely complicated process! I really hope I can pull it off correctly. Edited May 18, 2023 by [email protected] Share this post Link to post Share on other sites
AKATV 839 Posted May 19, 2023 Its not too hard a process, you might have to do it a couple of times I had the exact same code and after re-initialization it has worked perfect for 5 months so far No sure why it happens, possibly an electrical glitch with all those sensors and controls? I think low battery voltages affects it somehow and corrupts the settings, mine started (I think) by starting in -5 degrees and the battery drawing way down Let us know how you make out AKATV Share this post Link to post Share on other sites
jeepwm69 7,719 Posted May 22, 2023 On 5/18/2023 at 9:56 AM, [email protected] said: Found it. Looks like a pretty immensely complicated process! I really hope I can pull it off correctly. Kinda like getting 30 men in Contra isn't it? 2 Share this post Link to post Share on other sites
