How To - ECU Replacement

Discussion in 'Mazdaspeed 3 How-To' started by jcolton, Jun 25, 2020.

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  1. BAT-man

    BAT-man BANNED Greenie Member

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    Amazing post, thank you OP!!!

    I've been dreaming of this kind of thing for years - I hate having to go to the dealer to program keys or ABS modules, etc.

    Is the Mazda IDS software the same one where you can change all kinds of "dealer" type options (usually CANBUS type stuff)? Like how many times the Genpu blinks when you actuate the turn signal, or whether all or just one doors unlock when you hit unlock on the remote?

    Also, in your searches, have you come across this, and will it do the same thing? The description makes me think it would.
    https://www.uobdii.com/wholesale/vxdiag-vcx-nano-for-ford-mazda-2-in-1.html
     
    Last edited: Nov 15, 2020
  2. Cameron Keyte

    Cameron Keyte Greenie Member

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    Can confirm, at least for Gen 1s, you can program keys through the PATS programming module in FORSCAN.

    I ordered an ECU from here, with my VIN pre-programmed: https://www.fs1inc.com/2008-mazda-m...tG-yyfYotUIUGKx8HKRRYnQ4XoxCaDJgaAl8yEALw_wcB

    Bought this cable from Amazon:



    And did the registration process to get FORSCAN for free for 2 months.

    I used a $13 key blank off eBay, that my local locksmith cut for $3.


    Sent from my Pixel using Tapatalk
     
    Cameron Keyte, via a mobile device, Nov 15, 2020
    #22
  3. BAT-man

    BAT-man BANNED Greenie Member

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    Amazon link broken
     
  4. Cameron Keyte

    Cameron Keyte Greenie Member

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    Here's the ASIN: B01F0GVBWY

    Throw that into the Amazon search

    Sent from my Pixel using Tapatalk
     
    Cameron Keyte, via a mobile device, Nov 16, 2020
    #24
  5. BAT-man

    BAT-man BANNED Greenie Member

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    Oh wow that's cheap. So you didn't end up using the Mazda IDS software, right? I am not familiar with FORSCAN (what a great acronym btw), but curious if it has other functionalities related to CANBUS. Have you looked at any other functionalities? I'm poking around the forscan site but curious if you already looked into it.
     
  6. Cameron Keyte

    Cameron Keyte Greenie Member

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    I haven't really tried anything else. From the YouTube videos I watched, Ford guys use it to change tire size to correct the speedo, or locking sequences, etc.

    It can also datalog every PID an AP can. Not sure useful for most of us, but it's there...

    Sent from my Pixel using Tapatalk
     
    Cameron Keyte, via a mobile device, Nov 17, 2020
    #26
  7. JohnnyTightlips

    JohnnyTightlips Motorhead Silver Member

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    Tire size fix would be nice, wonder why AP and VT never implemented anything like that.
     
  8. L337TurboZ

    L337TurboZ World Class Truck Squatter Greenie Member

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    What would be nice is rev match downshifting. The newer Camaro have it and it's awesome. With TBW systems it isnt hard to implement
     
    L337TurboZ, via a mobile device, Nov 18, 2020
    #28
  9. takotomo

    takotomo Greenie N00B Member

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    I did look further into it, and Forscan can't be used to replace a PCM and program new keys, (Unless you get a PCM with your VIN number pre-programmed I suppose).
     
  10. jcolton

    jcolton Greenie Member

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    Sorry for the ridiculously late reply, been moving and changing jobs and haven't had time for mazda things :( @takotomo nailed it, Forscan is useful for some things but not this procedure.

    I recently purchased a ford focus rs and started using Forscan there to program things like seatbelt chime, door chime, navigation while in motion, things like that. I haven't tried anything in PATS on the ford though it's there. I have not tried plugging into the mazdaspeed yet but the program itself scans your bus protocol(s) and will list out all of the available computer modules on your can network. I'll give it a shot here soon and update with what is available if anything looks worthwhile.
     
    jcolton, via a mobile device, Mar 29, 2021
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  11. xvegasguy25

    xvegasguy25 Greenie N00B Member

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    @jcolton I need your help! I’ve watched a million YouTube videos and read a ton of forums until I finally came across your ECU/PCM post. Here’s my situation. I have a 2011 Mazda CX-7 and the PCM is on its last leg. I only have one key for the car. I purchased a PCM online that has been preprogrammed with my cars VIN. I also purchased two new key fobs (blanks with transponders in them). I also purchased a Ford/Mazda VCM II with the IDS program files but I’ve tried everything to get it to work on my laptop with no success. I’m wondering if the issue is because I’m running Windows 10 (I’ve read conflicting info on whether or not it’s possible to load and run using Windows 10). What would you do? I’m wondering if I can keep the old PCM in the car, get 1 or 2 new keys cut (and maybe programmed?) so they all work on my old PCM. Then, put in the new PCM and run through the key cycle instructions that came with the new PCM. Here are those instructions: insert one new key and turn it to ignition on position for 3 seconds then remove the key. Insert second new key and turn it to ignition on position for 3 seconds then remove the key. You can now start the motor with either new key (the cars original key will no longer work). If this process does actually work, I’m wondering if I should have the 2 new fobs I bought online cut but not programmed to the original PCM or have them cut AND programmed to the original PCM before I put in the new PCM. I’m reaching out to you because you’ve obviously done a ton of trial and error and I love your attention to detail. Ive already spent $225 on the new PCM, $35 for the two new key Fobs, $135 for the VCM II, and looking to spend $80 each to have the new keys cut (and possibly programmed to the old OR new PCM). I could drive the car to a locksmith with the original PCM and my original key and then put in the new PCM and see if they could get it working? I don’t know what to do. Please help!! -Mike
     
    xvegasguy25, via an iPhone, Jul 1, 2021
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  12. jcolton

    jcolton Greenie Member

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    Hey there Mike sounds like a whole lot of not fun!; Unfortunately you cannot just drop the new ECU in there after doing the key procedure as you mentioned, as the HEC would then no longer be able to communicate with the new ECU without adding it to the car with IDS. Unfortunately I think windows 7 is the answer....I think your best bet is to either get a throwaway laptop to run windows 7 on (my Mazda laptop is a Dell d630 with no enter key if that tells you anything haha cost like 20 bucks) or try firing windows 7 up in a virtual machine using VirtualBox, as that allows USB device passthrough from the host OS down to the VM which is what you would need. You can do the same with hyper-v though you have to pass the entire USB 3.0 (doesn't work with 2.0) controller down to the VM with PowerShell which is not easy or intuitive.

    Good luck sir, once you get the software going the rest is no problem. Sorry I couldn't be more helpful!
     
    jcolton, via a mobile device, Jul 1, 2021
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  13. xvegasguy25

    xvegasguy25 Greenie N00B Member

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    That was very helpful. I’m gonna do whatever I can to get a system with Windows 7 and see how it goes. Thank u so much for the quick response!!
     
    xvegasguy25, via an iPhone, Jul 1, 2021
    #33
  14. xvegasguy25

    xvegasguy25 Greenie N00B Member

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    So you were right. I dug up an old laptop that has windows 7 and had no problem loading the IDS program and using the OBD2. Here’s where I’m stuck and praying u can help me. As I’m going through IDS, I get to the part where I need to enter the PCM Part Number, Calibration Number, or Tear Tag number. The sticker on my PCM is gone and I’ve searched all over the engine bay looking for this tear tag. Actually, I don’t even know if Mazda’s have them cuz all the videos I’ve watched only talk about Fords (and I know Fords have them). I’ve gone on all sorts of sites trying to use my VIN to identify one of these numbers but no luck. Any advice or guidance?!?!
     
    xvegasguy25, via an iPhone, Jul 16, 2021
    #34
  15. Vhinrye

    Vhinrye Greenie Member

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    Autonumen i have done business with them for 3 yrs now..
     
    Vhinrye, via an iPhone, Jul 28, 2022
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  16. Vhinrye

    Vhinrye Greenie Member

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    Hey brotha got a question im stuck trying to get an updated ids for mazda,,i got the ford but cant get a legit updated one i have a current version of 122.0 ids ,, but couldnt pass thru getting it connected to mazda.a newer version is what it wants..or im just really fucking up here..having the car goin thru all the diagnose and shit,all it was truly was immo system.fccccckkk. Didnt realize it coz both key still unlock and lock...do u happen to have access to get thru MSDr system? Thanks in advance
     
    Vhinrye, via an iPhone, Jul 28, 2022
    #36
  17. Dr Tal

    Dr Tal Greenie N00B Member

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    Hey question does this work if I have to replace the modules for the rke system?
    Having a hell of a time getting my remote keys program and working with keyless ignition and keyless entry. I swear it's just one of them antennas but there is no way to tell which is bad if there is no code for it.

    The dealer said I might have to replace the security system. I wonder if push comes to shove if I can just replace the rke module and program it to the car.

    I can program keys to the car using forscan pats and 1 of my fobs works with unlock and lock but not with keyless entry and ignition
     
    Dr Tal, via a mobile device, Aug 25, 2023
    #37
  18. Easter Bunny

    Easter Bunny Professional Engineer Motorhead Platinum Member

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    If you don't have two working keys you need the dealer to reprogram them
     
    Easter Bunny, via a mobile device, Aug 25, 2023
    #38
  19. Dr Tal

    Dr Tal Greenie N00B Member

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    nope. with forscan you can add new keys to the system without having 2 keys.
    with both the rke and pats system.
    i added a new maser key that i had cut with it,
    if i had a new oem key i can program it

    though if the rke module is crappingg out id have to replace the thing similar to the ecu replacement.
    thats why wondering if this method works with any modules
     
  20. Awafrican

    Awafrican Moderator Gold Member

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    @jcolton pics aren't loading anymore could you please upload them directly into the thread so we don't loose them? I know someone ( @jsmith ) was just looking for them

    Thanks
     
    Awafrican, via a mobile device, Sep 4, 2023
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