s4man111
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« on: September 08, 2021, 08:27:51 PM »
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Hello I have been trying to incorporate my AEM wideband to output to Ecu for logging with Me7 I have my settings in Me7 correct according to the attached pic. When logging I only see up to 1V. The wideband seems to be calibrated correctly on its default setting. I have 2.45V outputting on the analog out wire from the wideband and I am connected to the black wire on the rear o2 harness and I even tried connecting to pin 11 on the ecu (bank 2 sensor 2). With no change. Still only logging 1V. Could it be the tune? I told the tuner to delete rear o2 when i first got the tune. Any help is appreciated. Thank you.
2001 Audi s4 b5 2.7t stage 3 minus
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« Last Edit: September 08, 2021, 08:29:26 PM by s4man111 »
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s4man111
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« Reply #1 on: September 08, 2021, 08:28:34 PM »
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Hello I have been trying to incorporate my AEM wideband to output to Ecu for logging with Me7 I have my settings in Me7 correct according to the attached pic. When logging I only see up to 1V. The wideband seems to be calibrated correctly on its default setting. I have 2.45V outputting on the analog out wire from the wideband and I am connected to the black wire on the rear o2 harness and I even tried connecting to pin 11 on the ecu (bank 2 sensor 2). With no change. Still only logging 1V. Could it be the tune? I told the tuner to delete rear o2 when i first got the tune. Any help is appreciated. Thank you.
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BlackT
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« Reply #2 on: September 08, 2021, 11:17:58 PM »
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Put voltage divider. Don't feed it with more than 1 V on rear 02 ECU pin
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prj
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« Reply #3 on: September 09, 2021, 12:19:34 AM »
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Put voltage divider. Don't feed it with more than 1 V on rear 02 ECU pin
There is no problem feeding it up to 5v. Did the OP disconnect the rear O2 physically from the connector? Or trying to feed both signals at once and wondering why it does not work? |
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« Last Edit: September 09, 2021, 12:21:59 AM by prj »
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BlackT
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« Reply #4 on: September 09, 2021, 02:19:06 AM »
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Somewere on forum I read that ADC for rear O2 can read only up to 1.1V...
But if can read up to 5 V, that is great I am going to remove voltage divider
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prj
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« Reply #5 on: September 09, 2021, 08:03:35 AM »
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Somewere on forum I read that ADC for rear O2 can read only up to 1.1V...
But if can read up to 5 V, that is great I am going to remove voltage divider
They can all read up to 5V. If you don't see 5V you are logging the wrong variable. |
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s4man111
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« Reply #6 on: September 09, 2021, 08:33:26 PM »
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They can all read up to 5V.
If you don't see 5V you are logging the wrong variable.
So I moved the wb gauges ground wire to under the hood where their is a harness ground behind the reservoir and it's logging now. My values look a little off? My gauge itself says 14.7 V |
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BlackT
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« Reply #7 on: September 23, 2021, 01:24:09 AM »
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They can all read up to 5V.
If you don't see 5V you are logging the wrong variable.
We are talking about rear O2 input? When I remove voltage divider it show 1.15V(there is a ~2.5V at rear O2 input when I check with volmeter) With voltage divider( 1:5) it measure good first pic: car on idle I connect signal than disconnect ( no voltage divider 0-5V signal) second pic: cruising, than WOT, than overrun (voltage divider 1:5 linear signal 0-1V) |
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« Last Edit: September 23, 2021, 01:28:22 AM by BlackT »
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prj
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« Reply #8 on: September 23, 2021, 03:50:43 AM »
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You are logging wrong variable in RAM. This variable gets a max applied. You need uulsuhk_w or uulsuhk2_w.
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BlackT
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« Reply #9 on: September 23, 2021, 04:34:58 AM »
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Would you like to share location of these variable for any 2.7T ECU?
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fknbrkn
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mk4 1.8T AUM
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« Reply #10 on: September 23, 2021, 05:01:58 AM »
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Why are you guys so lazy  Just look around ushk with ida 1st of all youll see hardcoded limitations and then just track it down to internal ram location with a few steps only 5 min deal it seems like uushk_w is 0x380B28 for a 4Z0907551Q |
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« Last Edit: September 23, 2021, 05:05:29 AM by fukenbroken »
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BlackT
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« Reply #11 on: September 23, 2021, 05:23:56 AM »
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Why are you guys so lazy Just look around ushk with ida1st of all youll see hardcoded limitations and then just track it down to internal ram location with a few steps only 5 min deal it seems like uushk_w is 0x380B28 for a 4Z0907551Q  I got some treat on PC while trying to get IDA, so I will need some time to get it back This tread is also a lot of help http://nefariousmotorsports.com/forum/index.php?topic=3731.msg48450#msg48450why prj say uulsuhk_w? |
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prj
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« Reply #12 on: September 23, 2021, 05:28:36 AM »
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Because it's been probably 2-3 years since I did anything on ME7 and I said it from memory purely?
I might be wrong and it might not even exist, or it might exist, does not matter. You need raw voltage from ADC.
Anyway, if you put in 1% effort of what you put in typing and posting here you would already have solved this ages ago.
We are talking about nothing.
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BlackT
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« Reply #13 on: September 23, 2021, 07:12:06 AM »
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I only say it confuse me, thank you all for you help
I gound it D-box have same RAM adress as M-box. I mange to log it now it show 0-5V
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