[rbabos]

Those DTCs (C1095 & C1216) mean the ABS ECU hasn't detected the proper voltage at terminals 13 and 3 while decelerating. This can be from faulty brake switch , tail light, shorts and a long shot the abs wheel bearing or sensor. I think the key here is proper voltage and that would need to be checked . E manual should have the info. I know, it's never easy , is it?
Ron

 

[rbabos]

I'm not good enough to diagnose it but both codes are from the same common fault. No mention of any possible ECM problems. Not sure where the power is coming from if 13 and 3 are unplugged as it looks like the ECM is the power source. Need for the electron wizard to chime in for this one.
Ron

 

[rbabos]

Ron are we talking about the same thing?
The ECU= electrical control unit attached to the HCU =hydraulic control unit for the abs brakes ....not the ECM = electronic control module for the engine under the seat....

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My mistake. ECU not ECM. I'm beginning to wonder if the led load or lack of is causing the issues. Can you pop in the old bulbs for the brake light and test this? ECU might be seeing the wrong voltage. Just a hunch.
Ron

 

[rbabos]

Hi Ron,
I don't have the old bulbs [emoji17]....i did however unplugged all LED and performed the same tests on the ECU and results were the same at the ECU..... I'm going to have to throw in the towel and take my rod one of these days, for the first time for a mechanic to look at it....
Thanks for taking the time to answer my post...

Tony D

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Reason I mentioned the led was I searched led and ABS issues. Had a lot more hits on it then I figured I would. For the HD it most likely has to do with voltages during the time the ABS ECU does it's system checks. Load or ground sensing issue. This is around the 15 mph, when it first starts rolling. Sensitive little bitch it is. If you do find it , please post the results as it's an odd one to have the unit work and then not work based on speeds. Codes, I can understand but the speed relationship is weird.
Ron

 

[rbabos]

Ok, problem solved with codes c1095 and c1216, and finally was able to clear the codes.... I'm running LED , so i connected a resistor on my brake lights, problem solved for those 2 codes...

Since i had everything apart, was dealing with my brakes, and my friend had his Harley tool with him, i decided to change , and flush the brake fluid...ECU and HCU worked perfect, and cleared all the codes....

Brakes worked fine ,with no codes while i had the motorcycle on the stand...
but than i went for a ride and now ,I'm getting code C1027... Wheel speed signal intermittent (Rear) and I'm still having the same issues with my abs activating as soon as i start riding [emoji36]...

Maybe a bad rear abs sensor? What else should i check?

At least for now, i don't think Its the ECU [emoji4] and that's good news..... back to the drawing board tomorrow again[emoji36]



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Glad the resister fixed the led issue. Def rear bearing or sensor for the final code. I see you mentioned the bearing was swapped. Was it OEM or aftermarket as some of them have caused issues, just like what you have. Seems for some reason it's not reading the wheel speed so the only two items is the bearing encoder and sensor as the culprits. I do need to ask and you can tell me to fk off but, is the bearing installed the correct side out? It has happened many times. You can do a resistance check by unplugging both and compare resistance between them with a multimeter and you can hook up the multimeter to AC volts and see if it's generating a signal when you spin the wheel.
Ron

 

[rbabos]

*Resistance

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Yes both since I don't know what the resistance should be. If both the same, the sensor is fine so do the wheel spin test on the rear and see if it puts out AC volts. Most auto units do so I suspect it will also. Again you can check against the front good one as a comparison for any volt output. I would not pull the bearing unless the multimeter shows a problem there.
Ron

 

[rbabos]

Hey also when my bike was fairly new I had the abs light that would come on when I rode it over a certain speed. Harley had to replace a section of wire to the rear wheel sensor. It ran along the right side lower part of the frame. So u might want to make resistance checks from front to rear to sensor checking entire wire. After u made resistance measurements at abs sensor connector. If sensor measures ok. Reconnect it and find a point where u can check wire from front to rear.

Good point. Where it tracks the right frame isn't a wire friendly spot with all the exhaust heat.
Ron