Up until last Tuesday, my ACS seemed to be working fine. no warning lamps. Then my battery failed. Whilst trying to get home without stalling, i noticed the speedo had stopped working. Got home, fitted a new battery, and the speedo worked, but now my ACS lamp will not stop flashing. I've plugged in to GS-911 and report no faults. Is the rear speedo sensor connected to the ACS sensor?. The handlebar seems to work and is clean on the contacts.
If so, why does the speedo work as it should, but the ACS is not now? This only started when the battery went flat.
I've removed the speedo sensor and can not find any problems or any wiring faults.
ACS not working
- Doctor T
- Posts: 2646
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ACS not working
Trust me I am a retired Doctor and lecturer at Oxford University of Structural and Mechanical/Electrical engineering.
May the shaft be with you
May the shaft be with you
- Doctor T
- Posts: 2646
- Joined: Tue Dec 21, 2021 10:21 pm
- Location: west sussex
- Bike Model and Year: 2007 R1200RT SE
- Has liked: 1695 times
- Been liked: 549 times

Re: ACS not working
No, my ABS hasn't worked for over 5 years, going by the service history
Trust me I am a retired Doctor and lecturer at Oxford University of Structural and Mechanical/Electrical engineering.
May the shaft be with you
May the shaft be with you
- Stu
- Administrator
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Re: ACS not working
usually ABS and ASC use the same sensors
How far have you riding on the bike? sometimes they require a bit of a ride for it to re-learn.
How far have you riding on the bike? sometimes they require a bit of a ride for it to re-learn.
- Doctor T
- Posts: 2646
- Joined: Tue Dec 21, 2021 10:21 pm
- Location: west sussex
- Bike Model and Year: 2007 R1200RT SE
- Has liked: 1695 times
- Been liked: 549 times

Re: ACS not working
About 10 miles
Trust me I am a retired Doctor and lecturer at Oxford University of Structural and Mechanical/Electrical engineering.
May the shaft be with you
May the shaft be with you
- Doctor T
- Posts: 2646
- Joined: Tue Dec 21, 2021 10:21 pm
- Location: west sussex
- Bike Model and Year: 2007 R1200RT SE
- Has liked: 1695 times
- Been liked: 549 times

Re: ACS not working
That's what i thought. The sensor cable houses wires for the ABS, Speedo, and the ACS. There are no nicks or cuts in the outer covering, and I've never touched the cable or the sensor. I will ask the dealer how much this cable costs and to make sure the switch to, i betting they cost an arm and a leg.
In the meantime, i can live with it. Its only like having no traction control. Can't think of any bikes I've owned that had TC
In the meantime, i can live with it. Its only like having no traction control. Can't think of any bikes I've owned that had TC
Trust me I am a retired Doctor and lecturer at Oxford University of Structural and Mechanical/Electrical engineering.
May the shaft be with you
May the shaft be with you
