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Offline nigelrtaylor

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TTCS problem
« on: July 12, 2016, 09:53:39 am »
Had a new problem crop up this weekend. Several times over 2 or 3 days whilst on a long weekend in Scotland the TTCS light comes on and the engine power gets cut as though the TTCS has detected wheel spin. The issue is engine power isn't restored until the throttle is closed and reopened! This happened in various different conditions. Dry roads whilst accelerating (mid overtake - not pleasant), dry roads whilst riding at constant speed/throttle (lane 3 of motorway, eek!), wet roads constant throttle and wet roads whilst accelerating (exiting corners). No error codes being displayed (P0000). Booked into to dealer for investigation, will keep you posted.

Online Coconut

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Re: TTCS problem
« Reply #1 on: July 12, 2016, 11:12:26 am »
Could be one of the Reluctor rings on one of the wheels has taken a knock,
and the sensor seeing a slight imbalance thinks that wheel is spinning so engages the Traction Control.

That could also explain why no DTC is stored,
as the system has not detected a fault as such,
and thinks it is working correctly !

It will be interesting to find out what the Dealer discovers  :028:

« Last Edit: February 11, 2021, 05:21:11 pm by Coconut »

Offline jofo

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Re: TTCS problem
« Reply #2 on: July 12, 2016, 12:24:15 pm »
You could also check if your sensor is clean.

Jofo
Before I owned a BMW... But that was before...

Offline nigelrtaylor

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Re: TTCS problem
« Reply #3 on: July 12, 2016, 10:08:21 pm »
It's interesting TTCS doesn't restore engine power until throttle is fully closed. Not what I would expect under normal TTCS operation.  As the problem is intermittent and occurred maybe 7 or 8 times over about 1000 miles I'm expecting a "can't find anything wrong" unless there is something obvious. 

Offline nigelrtaylor

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Re: TTCS problem
« Reply #4 on: July 19, 2016, 05:30:11 pm »
Seems the rear wheel sensor had some metal swarf stuck to it.  All cleaned now so let's hope that fixed it. 

Offline Zebraranger

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Re: TTCS problem
« Reply #5 on: July 19, 2016, 05:53:56 pm »
Good to hear that you got her going again. Do you know where the metal chips came from?

Offline nigelrtaylor

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Re: TTCS problem
« Reply #6 on: July 19, 2016, 06:10:18 pm »
The swarf wasn't from the bike. Nothing rubbing. Must have picked it up off the road when riding through rain which is when it started. 

Online Coconut

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Re: TTCS problem
« Reply #7 on: July 19, 2016, 06:43:03 pm »
Thanks for the update - this will help anyone else having a similar problem
to follow jofo's suggestion to check and clean the sensor(s)  :028:

Cheers  :821:

« Last Edit: February 11, 2021, 05:14:24 pm by Coconut »