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Author Topic: ECU Accees Denied ME7.5  (Read 2671 times)
Skyler471957
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« on: May 13, 2021, 07:39:52 PM »

Hi all, I'm realitively new to the tuning community. and I've been trying to get my ecu reflashed, and my tuner wants me to log with nefmoto. and I've tried just about everything, including installing, and uninstalling various ftdi drivers, and different computers. here is my log

13/May/2021 07:36:49.304: LOG: Sent message with service ID TesterPresent
13/May/2021 07:36:49.342: LOG: Received message with service ID: TesterPresentPositiveReponse
13/May/2021 07:36:51.823: LOG: Sent message with service ID TesterPresent
13/May/2021 07:36:51.860: LOG: Received message with service ID: TesterPresentPositiveReponse
13/May/2021 07:36:51.983: LOG: Disabling Windows sleep mode.
13/May/2021 07:36:51.986: USER: Starting variable reading.
13/May/2021 07:36:52.009: LOG: Starting DevelopmentSession diagnostic session with 124800 baud rate.
13/May/2021 07:36:52.010: USER: Starting diagnostic session.
13/May/2021 07:36:52.033: LOG: Sent message with service ID StartDiagnosticSession
13/May/2021 07:36:52.072: LOG: Received message with service ID: NegativeResponse
13/May/2021 07:36:52.073: LOG: Received negative response for service ID: StartDiagnosticSession, with response code: SecurityAccessDenied_SecurityAccessRequested
13/May/2021 07:36:52.074: USER: Start diagnostic session failed, ECU reports security access is required.
13/May/2021 07:36:52.077: USER: 100% complete.
13/May/2021 07:36:52.078: USER: Stopped reading variables.
13/May/2021 07:36:52.079: LOG: Restoring Windows sleep mode.
13/May/2021 07:36:54.551: LOG: Sent message with service ID TesterPresent
13/May/2021 07:36:54.590: LOG: Received message with service ID: TesterPresentPositiveReponse
Logged
nyet
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« Reply #1 on: May 13, 2021, 07:47:22 PM »

Is the ecu stock? Does it have a riser? Is immo working (will the car start and run properly right now with that ecu)?
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please 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
Skyler471957
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« Reply #2 on: May 13, 2021, 08:01:03 PM »

Thank you for the speedy reply!!  Smiley it has immo delete, evap delete, and supposedly stage 2 for a k04-015 and 550cc Injectors. Yes it will run. and I have no idea what you mean by does it havea riser. I've also tried to datalog my original ecu with the same errors..
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nyet
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« Reply #3 on: May 13, 2021, 08:56:45 PM »

If it isn't stock, the tune may be inhibiting write, in which case you need to use bootmode to overwrite it.

If it has a riser (you have to open the ecu to find out) you'll need to replace the riser with a stock flash. If you don't have the equipment or skills to do so, you'll need an entirely new ECU.
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please 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
Skyler471957
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« Reply #4 on: May 13, 2021, 09:01:28 PM »

If it isn't stock, the tune may be inhibiting write, in which case you need to use bootmode to overwrite it.

If it has a riser (you have to open the ecu to find out) you'll need to replace the riser with a stock flash. If you don't have the equipment or skills to do so, you'll need an entirely new ECU.
I also have a stock ecu, and I've tried the same thing. and I'm just trying to datalog at this point.
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nyet
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« Reply #5 on: May 13, 2021, 09:03:42 PM »

You dont need nefmoto to datalog, you need ME7Logger

And the stock ecu should have worked with NEF.
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ME7.1 tuning guide
ECUx Plot
ME7Sum checksum
Trim heatmap tool

Please 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
tadope
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« Reply #6 on: May 28, 2021, 08:42:06 AM »

Whats with the sleep mode warnings?  Anyone notice that?
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