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Guys and Gals, I'm new to the form and am hoping to get some help. I've got a Honda that's kicking my rear. I was riding it and was parking it for the night so I shifted it into neutral then shut it off. The next morning fired it up and it hasn't shifted since. It will shift with the manual emergency lever but not with the ES. I've done everything by the book checking the wiring harness, changed the shift motor, angle sensor (twice just to be sure) gear position switch and even a new ECU. The display shows RN1&5 as it should but - for 2,3&4 when shifted manually. The only thing I'm questioning is, I noticed the speedometer it's working so will a speed sensor cause a no shift at all? I didn't think so since the initial Fist shift is when the quad is not in motion. If this is the case does anyone know of a way to test a speed sensor without the Honda adapter pigtails mentioned in the manual? I back probed the wires and got 9 volts with the sensor unplugged and plugged in with ignition on. When I rotate the speed sensor I get 9 volts constant where from what I've been reading should pulsate. Any help would be appreciated.
 

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check the fuse to the shift motor. somewhere I read a post about them only getting 9 volts to the motor ?, i'm not sure how this is posb ?, because the shift motors are all 12 volt dc from what I know. and welcome to the forums. if all fuses are good ?, check for 12 volts into, and out of the push button on the bars, you should see 12 volts in and out of the buttons. if all else fails ?, get rid of that junk, and buy a manual shift atv..lol.
 

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I have checked it all by the book, fuses good etc. I have a new speed sensor on the way. If that's not it, I'm probably gonna have to start drinking.
 

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Have you taken the push button shift apart? My buddy had a 2000 350ES & his wouldn't shift. He had a bad or dirty connection in the up/down es shifter.... Just a thought??
 

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try pulling the shift motor out, leave it plugged up, turn the key on, operate the up and down buttons, see if the shift motor operates ?, if it does ?, then it sounds to me the angle sensor is bad, pretty common on the es models. if the shift motor still won't work this way ?, then the ecu is bad.
 

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I have a 2000 450es that had the same problem. Researched everywhere.
Could be the angle sensor or speed sensor, but most likely there is a problem
with the wiring somewhere deep down in the nether regions.
So I took the easy way out and fixed it by bypassing the ECU.

If you are interested in the work-around I used, let me know.
 

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I have a 2000 450es that had the same problem. Researched everywhere.
Could be the angle sensor or speed sensor, but most likely there is a problem
with the wiring somewhere deep down in the nether regions.
So I took the easy way out and fixed it by bypassing the ECU.

If you are interested in the work-around I used, let me know.
How did you go about bypassing the ecu?
 

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I have a 2000 450es that had the same problem. Researched everywhere.
Could be the angle sensor or speed sensor, but most likely there is a problem
with the wiring somewhere deep down in the nether regions.
So I took the easy way out and fixed it by bypassing the ECU.

If you are interested in the work-around I used, let me know.
how did you bypass the ecu
 

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Joined
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I have a 2000 450es that had the same problem. Researched everywhere.
Could be the angle sensor or speed sensor, but most likely there is a problem
with the wiring somewhere deep down in the nether regions.
So I took the easy way out and fixed it by bypassing the ECU.

If you are interested in the work-around I used, let me know.
How did u bypass ecu?
 

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Guys and Gals, I'm new to the form and am hoping to get some help. I've got a Honda that's kicking my rear. I was riding it and was parking it for the night so I shifted it into neutral then shut it off. The next morning fired it up and it hasn't shifted since. It will shift with the manual emergency lever but not with the ES. I've done everything by the book checking the wiring harness, changed the shift motor, angle sensor (twice just to be sure) gear position switch and even a new ECU. The display shows RN1&5 as it should but - for 2,3&4 when shifted manually. The only thing I'm questioning is, I noticed the speedometer it's working so will a speed sensor cause a no shift at all? I didn't think so since the initial Fist shift is when the quad is not in motion. If this is the case does anyone know of a way to test a speed sensor without the Honda adapter pigtails mentioned in the manual? I back probed the wires and got 9 volts with the sensor unplugged and plugged in with ignition on. When I rotate the speed sensor I get 9 volts constant where from what I've been reading should pulsate. Any help would be appreciated.

i saw the title to this post and was hoping someone would come to my rescue also. My 2001 TRX350ES Rancher bought new back then, and just 1500mi had a dead battery from sitting all winter and with a new battery the engine started and warmed up fine. The display showed all the normal readings and the gear was a big N. but hitting the shift up yielded not a peep from the shift motor, i tried reverse and up several more times.
So i pulled it into the garage and tore into it. Check voltages and continuity from the ECM to the shift motor and shift angle sensor. Checked the handlebar switched for any damage or wear. Finally i checked the power to the Shift motor from the ECM and my reading read 0V. Continuity looked good from the ECM to the motor but no power.
i can use the emergency shift lever and change gears and they read out on the display and ride the ATV around somewhat, but no ES shifting.

If i'm getting 0V from the ECM to the motor when i have power on and hit the up/down that tells me there's some reason the ECM is not send power to the motor to shift?
i haven't found anything to reset the ecm yet for a 2001 rancher yet, i've tried a few of the other year models reset but nothing worked on mine.. Help...

thanks
gary
 

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The ECU resets when you turn the key off. Later models save error codes and have a reset procedure.
The shift motor should get power on the first try after key on, so if you don't hear a clunk, the ECU is not working. The problem can be in the ECU, or one of the connectors going to/from the ECU.
My 2000 Rancher drains the battery quickly when it is off. I think it is the Display, but I am not sure why.
 

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thanks soundman, but i went through most of the checks from the service manual to check V at several place including the right most plug on the ECU that send the power to the shift motor and that's where i'm reading 0V. I found OEM ECU for about $180 inc shipping. i might try one and see if it fixes my issue.
 
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