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2016 Ducati Scrambler Flat Track Pro
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3 Posts
Discussion Starter · #1 ·
Hello Ducati.MS! New member here looking for some help on the rear brakes/ABS system for my 2016 Flat Track Pro. I did search the forum before posting but was unable to locate a similar thread in existence. I also tried posting in ScramblerForum.com but unfortunately it's pretty quiet over there...a user suggested I might have more luck on here so here goes:

Background:
I recently installed an SC Project full exhaust system (https://shop.sc-project.com/en-IT/4194_D16A-CL42A-Full-Exhaust-System-2-1.htm) on my bike. Looks & sounds great IMO - but it was a pain in the ass to get the factory vertical cylinder header pipe out and the SC Project header pipe on. For ease of access to the header & exhaust studs I removed pretty much everything under the seat (pictures below). As a result - the ABS module had to be completely drained and removed.

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Hood Automotive tire Automotive lighting Motorcycle Crankset




My Problem:
To my surprise, everything went back together without much fuss and I thought I was in the clear. When it came time to re-install the ABS module I followed the service manual exactly...torqued the banjo bolts to spec and used new crush washers, etc.

When it was time to bleed the brakes I was able to get all of the air out and fully bleed the front brake without issue. Unfortunately I have not had any success with bleeding the rear brake.

To date I have tried the "Old Fashioned" pump the brakes and crack the bleed screw method, using a "Mityvac Bleeder" to pull fluid through the system, and even a syringe to try and push fluid through the system from the rear brake bleed screw...all without success.

I have confirmed that the rear master cylinder is operational as I have pressure in the hose when I pump it with my hand and cover the fitting with my fingers. I went a step further and Bled the ABS module itself at the upper banjo bolt for the rear brakes as well...still nothing. So I know that fluid at a minimum is located between the master cylinder and the top of the ABS module...but for whatever reason I cannot force it through in either direction and down to the rear caliper.

I spoke to my local Ducati Dealership and was told that there is a special Ducati tool required to purge the ABS module when it is completely drained and that I will have to take my bike in to them and have it performed. I have not been able to find anything out there in forums or on youtube confirming this unfortunately. I am wondering if anyone has any tricks to fully bleed the rear brake system when it has been completely drained as I have done. Or is it accurate that a Ducati diagnostic tool or something like that needs to be hooked up to the ECU in order to tell it to purge the system of air??

I just can't figure out why the front would bleed without issue after also being completely drained and having to go through the same module...but here I am. Bike does not throw any CEL codes/errors and front brakes work fine.


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Tire Fuel tank Wheel Automotive fuel system Automotive lighting





Apologies for the long post but I wanted to be as thorough as possible to help with any possible diagnosis. Any help is greatly appreciated!!!

TLDR - Introduced air to the ABS system and cannot bleed rear brakes. Anyone run into and solve similar issue?
 

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2021 Scrambler Icon
Joined
34 Posts
Hi @scott, I see you help many many people here, so.... maybe this should be under the Tech Forum? I'm still new to this forum, but thinking it may help @PhillyFTP with this issue and I'm not sure how to do this or if it can be done. Thus this post. Thanks ahead.
 

Registered
2016 Ducati Scrambler Flat Track Pro
Joined
3 Posts
Discussion Starter · #4 ·
Hi @scott, I see you help many many people here, so.... maybe this should be under the Tech Forum? I'm still new to this forum, but thinking it may help @PhillyFTP with this issue and I'm not sure how to do this or if it can be done. Thus this post. Thanks ahead.
Appreciate the help @connector!!

I figured the ABS Module is likely the same as similar year Monsters but wanted to start here first if not.
 
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