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m84 not connecting to ecu

PostPosted: Sun Nov 08, 2020 12:14 pm
by kevford75
just installed a m84 and trying to get it to connect to ecu manager. Can bus has resistors installed with a 50 reading. high and low has correct voltage reading, has the 2. 28 firmware. when i plug the usb into the laptop the resistance drops to zero. and ecu not connected message stays on the manager. Any ideas what could be wrong?

Re: m84 not connecting to ecu

PostPosted: Sun Nov 08, 2020 1:41 pm
by David Ferguson
Is the laptop running on batteries? Is the car on a charger? You can have grounding problems in that scenario. Try running the laptop on battery power.

Also, make sure you are using M84 ECU Manager, not ECU Manager which works with M400/M600/M800 ECUs.

Re: m84 not connecting to ecu

PostPosted: Mon Nov 09, 2020 6:19 am
by kevford75
it is on a motorcycle, laptop is on battery, and the ecu is grounded to the battery

Re: m84 not connecting to ecu

PostPosted: Thu Nov 19, 2020 6:59 am
by kevford75
what else can i try i've checked voltage on the can hi and low side checked resistance, have the latest utc 2.28 firmware , still cant get the ecu to connect any advice is welcomed

Re: m84 not connecting to ecu

PostPosted: Thu Nov 19, 2020 8:36 am
by SprinterTRD
Have you tried setting ECU manager to use secondary CAN address?

Re: m84 not connecting to ecu

PostPosted: Thu Nov 19, 2020 9:57 am
by kevford75
i have not, i will try that next thanks