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No connection to ECU

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Comments

  • #32
    223vmax
    Registered Users, Registered Users 2 Posts: 475 ✭✭223vmax


    I got this connected to Lexia. I have fault "U1208 - Fault in communication with the engine management ECU or with the drive train interface ECU" It also advised ECU incoherent, although Lexia and Diagbox was able to read faults/status of the different systems. I also checked CAN bus resistance and got 63 ohms which I think is good. Deplhi and cheap hand held don't communicate with the ECU at all. Other than checking connections on BSI & ECU not sure where to go.


  • #33
    scannerd
    Registered Users, Registered Users 2 Posts: 236 ✭✭scannerd


    Time to break out a scope and see what the data steam looks like on can hi and can low, the resistance check not that helpful

    The will be a number of ecu's on the can bus, if you get communication with some then the network is ok but you have an issue with talking to 1 of the 2 mentioned.

    quick and dirty - find and unplug 1 of the ecu's above and then see if you can talk to the other with the code reader, that can confirm if is just one causing the problem.


    1295617903_1_FT120898_c4_picasso_lhd_ecu.png


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