Bossdaddy 212 Posted May 25, 2021 I just got this one from a friend of mine, it's in really good shape just will not shift gears with buttons. I can shift manually and it shifts perfect. About 18 months ago he had a new OEM angle sensor and shift motor installed. It has a hot battery and everything works electronically except the ES, it's totally dead, when I push either shift button nothing happens, no noise at all, just like there is no power at all. I don't know where to start. Mechanically I'm ok but electrically I'm lost. Need a lot of help!! Share this post Link to post Share on other sites
jeepwm69 7,751 Posted May 25, 2021 23 minutes ago, Bossdaddy said: I just got this one from a friend of mine, it's in really good shape just will not shift gears with buttons. I can shift manually and it shifts perfect. About 18 months ago he had a new OEM angle sensor and shift motor installed. It has a hot battery and everything works electronically except the ES, it's totally dead, when I push either shift button nothing happens, no noise at all, just like there is no power at all. I don't know where to start. Mechanically I'm ok but electrically I'm lost. Need a lot of help!! OEM Honda angle sensor and shift motor? If not, get rid of the china junk and try OEM parts. Share this post Link to post Share on other sites
Bossdaddy 212 Posted May 25, 2021 They are OEM parts. Share this post Link to post Share on other sites
shadetree 5,977 Posted May 25, 2021 have you checked all the fuses ?, have you checked to make sure the shift motor is indeed good ?. are you getting power to either shift buttons at bars ?. Share this post Link to post Share on other sites
retro 4,074 Posted May 25, 2021 @Bossdaddy, it is pretty easy to diagnose the ES system if you have a decent multimeter. Follow the diagnostics steps on section pages 21.0 through 21.13 of the service manual (you can download a copy from here). Communicate with us while you are testing for additional tips, we've been through this stuff a bunch and can answer your questions. 2 Share this post Link to post Share on other sites
Bossdaddy 212 Posted May 25, 2021 Where do I go to download service manual? Share this post Link to post Share on other sites
shadetree 5,977 Posted May 25, 2021 6 minutes ago, Bossdaddy said: Where do I go to download service manual? top of this thread, click the link that reads service manuals . Share this post Link to post Share on other sites
shadetree 5,977 Posted May 25, 2021 would like to point out, 18 months ago when new parts were installed ( if they were indeed from honda ? ) , alot can happen in 18 months !. Share this post Link to post Share on other sites
Bossdaddy 212 Posted May 25, 2021 Fuses are good, I can't find any power at either shift button and not sure how to ck shift motor Share this post Link to post Share on other sites
Bossdaddy 212 Posted May 25, 2021 2 minutes ago, shadetree said: would like to point out, 18 months ago when new parts were installed ( if they were indeed from honda ? ) , alot can happen in 18 months !. I agree, they were bought from Partzilla, they could be bad again. Share this post Link to post Share on other sites
shadetree 5,977 Posted May 25, 2021 7 minutes ago, Bossdaddy said: Fuses are good, I can't find any power at either shift button and not sure how to ck shift motor a good 12 volt dc test light, time to start tracing power back from buttons. as for the shift motor, unhook it from the harness, hook 12 volts from a good battery straight to the motor, if the motor is good ?, it will spin when you connect 12 volts to it. Share this post Link to post Share on other sites
shadetree 5,977 Posted May 25, 2021 7 minutes ago, Bossdaddy said: I agree, they were bought from Partzilla, they could be bad again. i agree, i have seen many brand new parts, spec angle sensors !, be bad from the factory. Share this post Link to post Share on other sites
Fishfiles 20,147 Posted May 25, 2021 46 minutes ago, Bossdaddy said: Where do I go to download service manual? https://drive.google.com/drive/folders/15eWwngQ5SdlsIfbgpm5ZJWJYBYx3vJ7s 1 Share this post Link to post Share on other sites
Melatv 797 Posted May 25, 2021 Hi Big Welcome Here: -- You need to use a Multimeter do your testing --- unplug the connector for the Up/Dn buttons -- on the harness side you should read 5 VDC with the red test lead on the Bl/R wire and the black test lead on the neg. of the battery -- with the key on 2 Share this post Link to post Share on other sites
retro 4,074 Posted May 25, 2021 In case you are stuck on a phone with no access to a computer, here are the initial diagnostic steps: Most ES failures are caused by loss of power or ground, or by poor harness connections, either a blown 30 amp "Motor" fuse, poor grounds or wet/corroded harness connectors. Rarely do they ever require any new parts to fix them. In fact, 99% of all angle sensor purchases are unnecessary, folks just blame the easiest part to replace and throw their money away, cause they are too lazy to diagnose the system. You will need to take both fenders off of your Foreman to diagnose & repair it. You will need a multimeter, a tub of synthetic grease, cleaning supplies and a tube of dielectric grease. Read this guide before you begin your diagnosis so that you can integrate your ES prep into your diagnosis steps: https://atvhonda.com/topic/570-how-to-properly-prep-your-honda-es-shift-system/ Do NOT buy any parts, ask us for advice first. Keep us updated as you go if you can, so we can help you and learn from you! 2 Share this post Link to post Share on other sites
Bossdaddy 212 Posted May 25, 2021 2 minutes ago, retro said: In case you are stuck on a phone with no access to a computer, here are the initial diagnostic steps: Most ES failures are caused by loss of power or ground, or by poor harness connections, either a blown 30 amp "Motor" fuse, poor grounds or wet/corroded harness connectors. Rarely do they ever require any new parts to fix them. In fact, 99% of all angle sensor purchases are unnecessary, folks just blame the easiest part to replace and throw their money away, cause they are too lazy to diagnose the system. You will need to take both fenders off of your Foreman to diagnose & repair it. You will need a multimeter, a tub of synthetic grease, cleaning supplies and a tube of dielectric grease. Read this guide before you begin your diagnosis so that you can integrate your ES prep into your diagnosis steps: https://atvhonda.com/topic/570-how-to-properly-prep-your-honda-es-shift-system/ Do NOT buy any parts, ask us for advice first. Keep us updated as you go if you can, so we can help you and learn from you! Thanks great info. 1 Share this post Link to post Share on other sites
Bossdaddy 212 Posted May 25, 2021 Shadetree, I went back to shift buttons and rechecked, both buttons have power on black wire, when pressed both buttons have power on white wire as will so the buttons are good, right? Share this post Link to post Share on other sites
retro 4,074 Posted May 25, 2021 You should measure 5 volts DC through the shift switches and 5 volts DC supplying power to the Angle sensor. We can go step by step with ya if you wish. It's easy to work on Hondas, just gotta be willing to work and be thorough, which means both fenders gotta be taken off the ATV. Thats where many folks fail.... Share this post Link to post Share on other sites
Bossdaddy 212 Posted May 25, 2021 Is there anything else I can check before I take both front and back fenders off? Share this post Link to post Share on other sites
shadetree 5,977 Posted May 25, 2021 32 minutes ago, Bossdaddy said: Shadetree, I went back to shift buttons and rechecked, both buttons have power on black wire, when pressed both buttons have power on white wire as will so the buttons are good, right? yep, sounds like buttons are good. Share this post Link to post Share on other sites
retro 4,074 Posted May 25, 2021 50 minutes ago, Bossdaddy said: Is there anything else I can check before I take both front and back fenders off? Yeah, follow the diagnostic flow charts from the beginning. But you'll have to take the fenders off to prep the ES, so ya may as well do it now to make your work easier. 2 Share this post Link to post Share on other sites
Bossdaddy 212 Posted May 25, 2021 Thanks guys, I'll start pulling plastic, it will take a while working on it in between other things. I do appreciate your help, hey hopefully I'll learn something from this. 1 Share this post Link to post Share on other sites
Jemmons467 179 Posted May 26, 2021 @Bossdaddy, there are some good guys on here. I was having trouble with my ES not shifting and they were pulling wiring out of their own fourwheelers just to answer a question for me. Definily take your time with the diagnostic and follow the ES prep guide. Also my issue, I believe was just one of many, but the last one holding me back was the inline fuse in the picture was cut under the wrapping. I cut it out and put a new one in and it's been running and shifting great ever since 3 1 Share this post Link to post Share on other sites
Bossdaddy 212 Posted May 27, 2021 Thanks guys, I got the front fender off and went on and started checking the wiring, I'm down to 21-6 and haven't found anything, I hope I'm doing things right I'm not very good with electrical problems. It's scary I haven't found anything. This old Foreman is clean and in really good shape, all the connectors I've looked at are perfect, no corrosion, not dirty, they look like brand new, it's been well taken care of. I'll get some more time to do some more checking in the next few days. Thanks for all the help. 2 Share this post Link to post Share on other sites
retro 4,074 Posted May 27, 2021 Great, keep us updated Bossdaddy. Share this post Link to post Share on other sites
