Thank you for the clarifications !
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I should also explain that CAN high is data sent from a control module and CAN low is data that is received from other modules. So when the IFZ puts the signal on the data bus it basically goes around once, If the HFM misses the signal for whatever reason then it wont release and the engine will not start, you then have to turn off ignition, remove key and then try again
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I think I understand now how the logistics work. So meaning to say that CAN High is from the IFZ and CAN Low from the HFM. Is it a norm for Mercedes vehicles on their HFM to miss signals sent from other control modules? Could insufficient power supply lead to this?
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The CAN bus is a fairly bullet proof system but you can still have problems with it, such as the z connectors that connect the CAN wires, you sometimes have to cut these connectors out and solder them directly to rectify CAN signal issues
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So
cutting connectors and soldering them directly; is this a customised modification or a normal "plan B" approach for rectification? Because replacing the CAN Bus will not make any difference huh? I still doubt that the ECU that is at fault here
Everything performance and function are operating on a normal basis.
By the way Ozz, can you re-attach the picture again in a larger size? The diagrams are visible but I can't make out the words. Thanks!
Which state of Australia are you in? I was in Melbourne, Victoria from 1997 - 2001.