technic
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« on: September 06, 2016, 02:41:11 AM »
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Hi,
I don't really know where to put this question so it ended up here. Please move if you consider it being more of a technical question.
I'm trying to establish a diagnostic session to a ECU of a RS4, 8E1910560 (MED9.1) But it fails to connect using VCDS. Same problem with both master and slave.
Can this be because of that it needs a CAN gateway for the communication?
br
/Lars
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« Last Edit: September 06, 2016, 04:43:17 AM by technic »
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aef
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« Reply #1 on: September 07, 2016, 05:51:17 AM »
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What is your setup like? One ecu on the bench?
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prj
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« Reply #2 on: September 07, 2016, 09:43:03 AM »
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Not going to work on bench, forget it.
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technic
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« Reply #3 on: September 07, 2016, 02:27:16 PM »
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Care to tell me why?
Skickat från min ALE-L21 via Tapatalk 2
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IamwhoIam
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« Reply #4 on: September 07, 2016, 02:38:31 PM »
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They work just fine on the bench, with just ONE little catch.
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I have no logs because I have a boost gauge (makes things easier)
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SB_GLI
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« Reply #5 on: September 07, 2016, 02:43:15 PM »
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These replies suck. Not going to work, forget it and one little catch. Why even bother posting?  |
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nyet
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« Reply #6 on: September 07, 2016, 04:28:30 PM »
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Exactly. If you aren't going to help, don't post. If you want to call out prj on something, PM him or something  |
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ME7.1 tuning guideECUx PlotME7Sum checksumTrim heatmap toolPlease do not ask me for tunes. I'm here to help people make their own. Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your ex
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IamwhoIam
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« Reply #7 on: September 07, 2016, 04:31:50 PM »
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I'm not calling out on prj, but talking to B7 RS4 MED9 on the bench is possible, if you talk to each ECU as the SLAVE! The only thing you can't do is talk to both at the same time, unless you have a gateway of some sort, but I can't see why you would even want to do that!
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I have no logs because I have a boost gauge (makes things easier)
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n0ble
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« Reply #8 on: September 08, 2016, 01:47:16 AM »
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Pretty sure it will work on the bench if you IMMO off.
Sent from my Le X620 using Tapatalk
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technic
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« Reply #9 on: September 08, 2016, 02:34:52 AM »
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My experience is that OBD writing on the bench is not possible without immo off - but I don't see how diagnostics can be affected?
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IamwhoIam
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« Reply #10 on: September 15, 2016, 11:29:51 AM »
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Did you guys actually read what I wrote above or I shouldn't bother anymore?
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I have no logs because I have a boost gauge (makes things easier)
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cherry
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« Reply #11 on: September 15, 2016, 05:50:03 PM »
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Anybody checked wiring diagram yet? There is no gateway between anything from drivetrain.
Both master and slave and all other CAN drivetrain members are direct connected to OBD plug.
Both ecu: 67 low, 68 high
OBD plug: 14 low, 6 high
But there is another CAN connection between both ecu which is not connected to any other CAN. 89 to 89, 90 to 90.
Maybe this will solve the issue both answer as slave "11". If not think back 20 years how "coding" was done by pulldown/bridge specific pin from ecu to enable/disable functions. But there are too much connections and a lot not clearly enough in wiring to say it now for sure in a few minutes.
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