CharlesElliott Posted March 3, 2018 Share Posted March 3, 2018 HiI have a Caterham race car with a standard locked Caterham ECU (it's the Supersport 140bhp Sigma 1.6). I can use Easimap and read the full range of parameters, but not write anything.I've recently got a DL1 Club which can read MBE CAN directly but having connected it to CAN high / low via the OBD plug I can't seem to read anything. Of course, I could have connected it wrongly....has anyone logged data via CAN from a Caterham ECU successfully?Charles Link to comment Share on other sites More sharing options...
Mark w Posted March 4, 2018 Share Posted March 4, 2018 Are you using the SBD cable ? Link to comment Share on other sites More sharing options...
ChrisC Posted March 4, 2018 Share Posted March 4, 2018 Charles, as you talk about Easymap, I guess you have that up and working, every thing you see in live data (that’s working or has been implemented by Caterham) is available on the bus. If your not seeing anything in the datalogger but easymap is working it must be the connection or the setup of the datalogger. Link to comment Share on other sites More sharing options...
CharlesElliott Posted March 4, 2018 Author Share Posted March 4, 2018 Thanks for the replies.Yes, using the SBD / MBE cable with USB, I can read everything in Easimap without issue.I have a DL1 Club that should be able to process the raw CAN. I have connected CAN H and CAN L from the DL1 cable to pins 6 and 14 on the OBD connector. The DL1 is configured to decode the CAN in MBE 9A4 format (I assume the Caterham locked MBE 992 uses the same format - if not, this could be an issue!). I've had an oscilloscope on the CAN pins and there definitely is something there that could be CAN :-). But no CAN data received at the DL1.Clearly it could be something I have done wrong or have not done, am just trying to narrow down where the issue might be.The 2018 regs imply that Caterham disable CAN on some ECUs (although this is for VCT cars, mine is a 2012 non-VCT car)It is permitted to have the CAN stream data enabled (if not already present in the latest map) from the ECU to provide data to a VBOX as per 5.10. Enabling of the CAN stream can only be done by Caterham Dartford or an appointed Caterham Motorsport Service Centre, by a re-flash of the ECU (for which the vehicle does not have to be present Link to comment Share on other sites More sharing options...
ChrisC Posted March 4, 2018 Share Posted March 4, 2018 Have you got a signal on both CAN hi and CAN lo? Does your scope CAN decode? I can’t help thinking if Easymap can view live data (and record it)your ECU and map should be fine. Link to comment Share on other sites More sharing options...
Ian Macquarie Posted March 4, 2018 Share Posted March 4, 2018 I've no direct experience, but isn't CAN receive a paid for option? Does your DL1 Club have CAN enabled? Link to comment Share on other sites More sharing options...
CharlesElliott Posted March 4, 2018 Author Share Posted March 4, 2018 Chris - I will double check high and low, they seemed ok. It doesn’t CAN decode. I agree it seems it should work although the Caterham lock makes it hard to see how the ECU CAN is configured. Ian - yes, it is paid, I have a 15 channel CAN licence. Everything came together from Race Technology. Link to comment Share on other sites More sharing options...
ChrisC Posted March 4, 2018 Share Posted March 4, 2018 I think it time to talk to them. Link to comment Share on other sites More sharing options...
CharlesElliott Posted March 4, 2018 Author Share Posted March 4, 2018 Yes, have dropped support an email today. Link to comment Share on other sites More sharing options...
CharlesElliott Posted March 4, 2018 Author Share Posted March 4, 2018 I've been told that Caterham disable CAN publishing (perhaps except for RPM) on their ECUs Link to comment Share on other sites More sharing options...
CharlesElliott Posted March 6, 2018 Author Share Posted March 6, 2018 OK, I've had to resort to sniffing the CANbus to see what's there.There are four CAN channels, two of which seem to have data. Coolant temperature and something else (which is pretty static) on 0x288 and rpm on 0x280. No throttle position I can find on this ECU.Will investigate a bit more tomorrow.Charles Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now