Cheers.
I’m new here and I want to share my experience with common DQS error issue with early V4 models. Quickshifters are pain in my butt since I had bought my first bike, it is 2016 R1, sometimes I think, that QS is a something like a curse for me. Previous owner of R1 used to shift in GP style (reversed shifting) and had no idea why QS is not working on standard shifting sequence, after a week of tests, I’d bought original shift lever and yes, this helped. Next was 2018 R6,where QS worked not as it supposed to be, but after few track days, it’s gone completely. Previous owner mismatched few wires after ECU tune and QS channel had high voltage on 12V wire. Few months ago, I’ve decided to pick V4 or V4S, but after all of this QS troubles and some other “used bikes stuff”, I realized, that my new bike will be brand new or slightly used with low mileage.
My choice stopped on 2019 V4S with only ~1.100 km on dash,so,after dealer checks, we’ve been shaking hands with ex-owner while new registration was assigning. Rode this gorgeous piece of Italian technologies and design for ~500km, and boom! “DQS err” appeared on dash. I called their parts department, they’ve charged me with something like ~600$ in local currency for new DQS assy (metal rod and sensor), local service installed it and I’ve forgot about this trouble. By the way,bike was imported,so, warranty is not covering any issues here. After reaching 2.400 km,guess what?Yep. “DQS err”. After tonns of owner’s reports about QS problems,heating issues,broken wires etc., I’ve decided not to play this game anymore. Dealer said, that new piezo QS sensor works only with new ECU, best that I can get- heatshield on the same sensor. Plenty of positive feedback about Cordano and Translogic sensor, price is pretty comfortable, I’ve decided to order one of them, but what if the problem is in wiring, and QS sensors will be cooked as nuggets one by one?
Ducati diagnostics had special active test. I’ve tried to use Melcodiag and DiagZone, but, as far as I understand, only Texa and iScan can perform them correctly.
Then, the most interesting part: DQS sensor is filled with heat-resistant compound, the only way to remove it-dissolve in special solvents,but, it was not enough info about compound base,so anti-compound liquid also dissolved buttons in it
After brutal tear down, I’ve found, that under small board with scheme, there are empty space without compound,where moisture and continuous hear cycles burned positive terminal track for blipper button. The scheme is super simple: 4pc kOm resistors,two PCB buttons with silicone membranes and three terminals. SMD resistors had to be placed on track, so, if corrosion or heating destroys one of them- bike ECU see abnormal voltage and turning off DQS with err mesage,but,if sensor is close to death-it can work improper, but while its voltage does not drop low or high enough-it won’t show you a message. Also, I didn’t find DTC code and dealer too even with DQS err message and riding mode blinking.
I’ve soldered simple scheme with regular resistors on cardboard, connected with OEM plug-and yes, DQS U-D on dash.
The hardest part was to find a solution of creating a new sensor. Sensor body was printed on 3D printer, model creation and 5 pc printing cost me nearly 80$, than I’ve contacted local PCB factory about possibility of prototype creation. They’ve charged me with 110$ for a prototype and 10$ for each PCB (had to order at least 5).
The last part is just to connect all of it, I bought a compound, pour it under the board to prevent holes, soldered original wires-and yes, DQS U-D,but only after DTC reset (I don’t know why,there were no DTC in any ECUs,but only with connected DQS and forced DTC clear you can turn it on without errors).
I left two sensors for myself and other three were taken by friends or local services.
So,with all details mentioned, this time DQS fix cost me nearly 60 hours of time and 48$ each piece.
Also,with my compound fix, custom sensor got around 2k km and everything works like a charm,maybe it’s just a coincidence and yes, I’m totally happy with it.
Hope,this will help someone else,who suffer from QS like I
I’m new here and I want to share my experience with common DQS error issue with early V4 models. Quickshifters are pain in my butt since I had bought my first bike, it is 2016 R1, sometimes I think, that QS is a something like a curse for me. Previous owner of R1 used to shift in GP style (reversed shifting) and had no idea why QS is not working on standard shifting sequence, after a week of tests, I’d bought original shift lever and yes, this helped. Next was 2018 R6,where QS worked not as it supposed to be, but after few track days, it’s gone completely. Previous owner mismatched few wires after ECU tune and QS channel had high voltage on 12V wire. Few months ago, I’ve decided to pick V4 or V4S, but after all of this QS troubles and some other “used bikes stuff”, I realized, that my new bike will be brand new or slightly used with low mileage.
My choice stopped on 2019 V4S with only ~1.100 km on dash,so,after dealer checks, we’ve been shaking hands with ex-owner while new registration was assigning. Rode this gorgeous piece of Italian technologies and design for ~500km, and boom! “DQS err” appeared on dash. I called their parts department, they’ve charged me with something like ~600$ in local currency for new DQS assy (metal rod and sensor), local service installed it and I’ve forgot about this trouble. By the way,bike was imported,so, warranty is not covering any issues here. After reaching 2.400 km,guess what?Yep. “DQS err”. After tonns of owner’s reports about QS problems,heating issues,broken wires etc., I’ve decided not to play this game anymore. Dealer said, that new piezo QS sensor works only with new ECU, best that I can get- heatshield on the same sensor. Plenty of positive feedback about Cordano and Translogic sensor, price is pretty comfortable, I’ve decided to order one of them, but what if the problem is in wiring, and QS sensors will be cooked as nuggets one by one?
Ducati diagnostics had special active test. I’ve tried to use Melcodiag and DiagZone, but, as far as I understand, only Texa and iScan can perform them correctly.
Then, the most interesting part: DQS sensor is filled with heat-resistant compound, the only way to remove it-dissolve in special solvents,but, it was not enough info about compound base,so anti-compound liquid also dissolved buttons in it
After brutal tear down, I’ve found, that under small board with scheme, there are empty space without compound,where moisture and continuous hear cycles burned positive terminal track for blipper button. The scheme is super simple: 4pc kOm resistors,two PCB buttons with silicone membranes and three terminals. SMD resistors had to be placed on track, so, if corrosion or heating destroys one of them- bike ECU see abnormal voltage and turning off DQS with err mesage,but,if sensor is close to death-it can work improper, but while its voltage does not drop low or high enough-it won’t show you a message. Also, I didn’t find DTC code and dealer too even with DQS err message and riding mode blinking. I’ve soldered simple scheme with regular resistors on cardboard, connected with OEM plug-and yes, DQS U-D on dash.
The hardest part was to find a solution of creating a new sensor. Sensor body was printed on 3D printer, model creation and 5 pc printing cost me nearly 80$, than I’ve contacted local PCB factory about possibility of prototype creation. They’ve charged me with 110$ for a prototype and 10$ for each PCB (had to order at least 5).
The last part is just to connect all of it, I bought a compound, pour it under the board to prevent holes, soldered original wires-and yes, DQS U-D,but only after DTC reset (I don’t know why,there were no DTC in any ECUs,but only with connected DQS and forced DTC clear you can turn it on without errors).
I left two sensors for myself and other three were taken by friends or local services.
So,with all details mentioned, this time DQS fix cost me nearly 60 hours of time and 48$ each piece.
Also,with my compound fix, custom sensor got around 2k km and everything works like a charm,maybe it’s just a coincidence and yes, I’m totally happy with it.
Hope,this will help someone else,who suffer from QS like I
