Steering Darting issue solved!

[RapidSpyder]

Hope this might help someone else. My 2017 would act like it was fighting me coming out of right curves, then felt like it was skipping a tooth on a spline when it did straighten out. Kind of unnerving to say the least. Tried adjusting tire pressures among other things. Took it into the shop and he said the voltages weren’t right and reset them to zero. Handles like new now.

 

[BajaRon]

Though there may have been some out of spec voltage codes (not uncommon), he zeroed the steering angle sensor, not the voltage, and cleared the voltage codes. Because you certainly don't want zero voltage. But it's great that you got it fixed. You probably weren't too far from a Limp Home Mode issue if the steering angle sensor was giving you that much grief (engaging the nanny on right hand turns).

 

[BertRemington]

RS -- thanks for sharing this -- symptoms then resolution.

As BR said, the SAS has to be aligned electronically as it doesn't have a mechanical alignment. The SAS transmits steering angle over CANBUS many times per second (another member provide details several years ago) which is used by the VCM, instrument console and other modules.

Did the shop mention why the alignment might have been lost?

 

[BajaRon]

RS -- thanks for sharing this -- symptoms then resolution.

As BR said, the SAS has to be aligned electronically as it doesn't have a mechanical alignment. The SAS transmits steering angle over CANBUS many times per second (another member provide details several years ago) which is used by the VCM, instrument console and other modules.

Did the shop mention why the alignment might have been lost?

I've been told 20,000 times a second! Have no way to verify this. But if true, and it may well be, that's impressive!

 

[Snoking1127]

At 1Mbits/sec, for 20,000 per second, yes a short message could be sent, given low other "traffic".

https://kvaser.com/can-protocol-tut... Speed,be considered for special applications.

 

[RapidSpyder]

Though there may have been some out of spec voltage codes (not uncommon), he zeroed the steering angle sensor, not the voltage, and cleared the voltage codes. Because you certainly don't want zero voltage. But it's great that you got it fixed. You probably weren't too far from a Limp Home Mode issue if the steering angle sensor was giving you that much grief (engaging the nanny on right hand turns).

That’s exactly it, thanks for clarifying!

 

[RapidSpyder]

RS -- thanks for sharing this -- symptoms then resolution.

As BR said, the SAS has to be aligned electronically as it doesn't have a mechanical alignment. The SAS transmits steering angle over CANBUS many times per second (another member provide details several years ago) which is used by the VCM, instrument console and other modules.

Did the shop mention why the alignment might have been lost?

He said it might have been a result of a battery issue. I did replace it late last year, and the problem started before the old one went bad.

 

[BertRemington]

SAS CANBUS message id is 0C3h with a rate of 2.5 - 5 Hz. I'm not sure about the rate because my sniffer software is a bit flaky, my laptop is slow and I don't remember if the engine was running but certainly it was parked and I wasn't moving the handlebars.

// Can-Am Spyder uses Keyword Protocol 2000 version of CANbus 2.0a
// CANbus 2.0a is Standard 11-bit Message Identifiers
// CANbus 2.0b with Extended 29-bit Identifiers was pre-released 18 Apr 2012
//
// Cluster = 400h 401h 402h 514h [591h]
// ECM = 102h 103h 120h 122h 300h 308h 310h 342h 343h [516h]
// DPS = 330h ?150h
// MSL-MSR/SWM = 340h
// SAS = 0c3h
// TCM = 220h 222h [221h 223h]
// VCM = 020h [021h] 230h 430h [580, 581]
// WPM/EPB = 460h
// YRS = 303h
// TBD = 008h 150h 151h 156h 341h

 

[Bfromla]

Pesky power hungry gremlins:banghead::banghead: