Audi ABS Scope Traces produced
Hi Guys thanks for all your help very much appreciated. I have done what greasebob has said with the wiring and grounding of the scope. I have been out on a trial run to produce some scope traces from the ABS system. I don't know why the Audi manufacturer has wired together two ABS sensors on this model of car, the Right Hand Rear and the Right Hand Front are both connected at the same ECM (PCM) terminal 03?
The scope traces were a little confusing at first, apparently the VP when pressing the 'S' button saves three shots of the same traces, which confused me, so I had to delete some mirror images of the same graphs.
The graphs I have got look good now, but the voltages from the scope traces you will see that the GREEN trace voltages are always lower. All scope settings for each channel are and have been kept the same values for the tests.
I am now wondering if the correct way to test these types of systems is to carryout one wheel at a time and then move onto the next?
Have a look please advise.
David
Hi Guys thanks for all your help very much appreciated. I have done what greasebob has said with the wiring and grounding of the scope. I have been out on a trial run to produce some scope traces from the ABS system. I don't know why the Audi manufacturer has wired together two ABS sensors on this model of car, the Right Hand Rear and the Right Hand Front are both connected at the same ECM (PCM) terminal 03?
The scope traces were a little confusing at first, apparently the VP when pressing the 'S' button saves three shots of the same traces, which confused me, so I had to delete some mirror images of the same graphs.
The graphs I have got look good now, but the voltages from the scope traces you will see that the GREEN trace voltages are always lower. All scope settings for each channel are and have been kept the same values for the tests.
I am now wondering if the correct way to test these types of systems is to carryout one wheel at a time and then move onto the next?
Have a look please advise.
David
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