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05-01-2013, 12:51 PM
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(Thread Starter) |   Neutral : +2 score  How To: BCM Replacement/Swap My reason for writing this up is cause, for some time I have been driving around not being able to use my blinkers/hazards due to the BCM(Body Control Module) has crapped out on me. This was determined after fuses were checked, and wirings were also checked. Mods please feel free to edit anything that you feel as an error...thanks Alright! So BCM(Body Control Module) image-1373969453.jpg You will need to disconnect the negative from your battery image-579068959.jpg Location: it is connected to the cabin fuse box as depicted here image-1046220323.jpg In order to remove the housing that contains BCM/Fusebox, you will need to remove the inner plastic lining that lays on the flooring of this "thingy". Doing so will unhinge the housing that contains the BCM. image-782364960.jpg As soon as housing is removed, you will see that the BCM is secured by a single 11mm bolt as shown below image-3871372257.jpg Once bolt has been removed, it is then all self explanatory where all that's left to do is simply unfasten the wiring through its "connector clips" and transfer wires/Fusebox to the new BCM image-3461147594.jpg There you have it! Pretty simple 15-20 min job or maybe less. Don't think I need to remind you folks to reconnect your battery =P Stay Frosty SSG P out
__________________ GT3076R//Custom FMIC with 13" Core with 3" piping//HTP 3.5 Intake/Inlet System with AEM Cone//CorkSport SS DownPipe//Custom 3inch Exhaust with Single Flowmaster Exit//Autotech Fuel Pump Internals//Prosport OCC//Devils Own Meth//GrimmSpeed EBCS//Bosch 3Bar//Cobb AccessPort V2//MSD DashHawk//TWM Stage 2 Short Throw Shifter//D2 Racing Coilovers//RotorPro Front and Rear Cross Drilled and Slotted Rotors//EBC Green Stuff Front and Rear Pads//ACT 6 Puck Clutch and Flywheel//CorkSport Front Strut Bar//CorkSport Rear Brace Bar//CorksSport Rear Differential Mount//CorkSport Front Sway Bar//Whiteline Rear Sway Bar//CorkSport LED Kit//AWR 80 Duro TMM/RMM/PMM//GTSpec 4 Point Ladder Brace Bar// ////MADSCIENTISTTUNED//// |
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| The Following 5 Users Say Thank You to ArmySpeed6 For This Useful Post: | :: Gusto :: (03-04-2015), ChrisMazda3Owner (10-25-2018), mczimer (05-07-2013), Mistersix (06-17-2013), Poohster (05-18-2013) |
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05-07-2013, 02:50 PM
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05-17-2013, 11:02 PM
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__________________ GT3076R//Custom FMIC with 13" Core with 3" piping//HTP 3.5 Intake/Inlet System with AEM Cone//CorkSport SS DownPipe//Custom 3inch Exhaust with Single Flowmaster Exit//Autotech Fuel Pump Internals//Prosport OCC//Devils Own Meth//GrimmSpeed EBCS//Bosch 3Bar//Cobb AccessPort V2//MSD DashHawk//TWM Stage 2 Short Throw Shifter//D2 Racing Coilovers//RotorPro Front and Rear Cross Drilled and Slotted Rotors//EBC Green Stuff Front and Rear Pads//ACT 6 Puck Clutch and Flywheel//CorkSport Front Strut Bar//CorkSport Rear Brace Bar//CorksSport Rear Differential Mount//CorkSport Front Sway Bar//Whiteline Rear Sway Bar//CorkSport LED Kit//AWR 80 Duro TMM/RMM/PMM//GTSpec 4 Point Ladder Brace Bar// ////MADSCIENTISTTUNED//// | |
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06-17-2013, 11:41 AM
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| Not Ranked : 0 score @ArmySpeed6; I have the same issue as you did. Horn blaring lights flashing. I'm wondering if this is my issue, that i zapped the bcm some how. Questions: 1.Did you short something and fry the bcm? 2.How did you come to the conclusion this was your issue? 3.Did this solve your problem completely? 4.Does this require and software writing? As in, how does it know your key fob? 5.Did you get this part from the dealer? Was it expensive? Trying to explore all options before i head to the dealership. |
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06-17-2013, 12:10 PM
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1. I assume that whatever my buddy did, fried my bcm. 2. I did a few trouble shoots. tested fuse box inside the engine bay, checked for current and fuse life. Checked in cabin fuse box, but I checked what else were affected. 3. Once concluded/pinpointed the issue, it was all in the matter of finding someone who has one laying around. 4. My vehicle is the GT model but I lost my credit card key fob, so I am not sure whether or not any type of wiring was necessary, it was pretty much plug in play. 5. Dealership quoted me for $430 just for the part, time and labor is ridiculous, that alone would cost $185 per hour. also, make sure if you decide to lurk on here, make sure it corresponds to your vehicles model, ie. GT to GT, sport to sport. installation was very simple...but if you are like me, patience is NOT my best skill...nearly destroyed all the clips Cheers bud...
__________________ GT3076R//Custom FMIC with 13" Core with 3" piping//HTP 3.5 Intake/Inlet System with AEM Cone//CorkSport SS DownPipe//Custom 3inch Exhaust with Single Flowmaster Exit//Autotech Fuel Pump Internals//Prosport OCC//Devils Own Meth//GrimmSpeed EBCS//Bosch 3Bar//Cobb AccessPort V2//MSD DashHawk//TWM Stage 2 Short Throw Shifter//D2 Racing Coilovers//RotorPro Front and Rear Cross Drilled and Slotted Rotors//EBC Green Stuff Front and Rear Pads//ACT 6 Puck Clutch and Flywheel//CorkSport Front Strut Bar//CorkSport Rear Brace Bar//CorksSport Rear Differential Mount//CorkSport Front Sway Bar//Whiteline Rear Sway Bar//CorkSport LED Kit//AWR 80 Duro TMM/RMM/PMM//GTSpec 4 Point Ladder Brace Bar// ////MADSCIENTISTTUNED//// | |
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| The Following User Says Thank You to ArmySpeed6 For This Useful Post: | Mistersix (06-17-2013) |
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06-17-2013, 12:24 PM
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| Not Ranked : 0 score Thanks so much. I intend to pull it and make sure the numbers match. I just hope i don't need key codes written in or anything. This stuff is kinda new to me so i'm unsure of that. |
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| The Following User Says Thank You to Mistersix For This Useful Post: | ArmySpeed6 (06-17-2013) |
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06-17-2013, 02:17 PM
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I know there are a few dudes on here that, unfortunately totaled their six's...they should have it laying around.
__________________ GT3076R//Custom FMIC with 13" Core with 3" piping//HTP 3.5 Intake/Inlet System with AEM Cone//CorkSport SS DownPipe//Custom 3inch Exhaust with Single Flowmaster Exit//Autotech Fuel Pump Internals//Prosport OCC//Devils Own Meth//GrimmSpeed EBCS//Bosch 3Bar//Cobb AccessPort V2//MSD DashHawk//TWM Stage 2 Short Throw Shifter//D2 Racing Coilovers//RotorPro Front and Rear Cross Drilled and Slotted Rotors//EBC Green Stuff Front and Rear Pads//ACT 6 Puck Clutch and Flywheel//CorkSport Front Strut Bar//CorkSport Rear Brace Bar//CorksSport Rear Differential Mount//CorkSport Front Sway Bar//Whiteline Rear Sway Bar//CorkSport LED Kit//AWR 80 Duro TMM/RMM/PMM//GTSpec 4 Point Ladder Brace Bar// ////MADSCIENTISTTUNED//// | |
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03-04-2015, 12:18 PM
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__________________ :: somewhere between CT & VA :: yea yea - i know i cant spell |
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03-04-2015, 12:32 PM
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Just a wild guess ...
__________________ 2007 MS3 GT Autotech CDFP Internals || Cobb AP, SRI, TIH, DP, CB, BPV, EBCS, FSB & RSB || cp-e Injector Seals, EGR Delete|| JBR OCC, Shifter Plate, PMM & TMM, TB & Intake TIG, Coolant Bypass|| Mazdaspeed Coilovers || TRZ RMM|| TWM Bushings || MOOG Front & Rear Endlinks 2006 MS6 GT (ZZB Rebirth) Autotech CDFP Internals || BNR Stage 3 || Bosch 3 Bar || Cobb AP || cp-e Injector Seals, CBE, DP || ETS TMIC || Full Race EM || H&R Coilovers || JBR Mounts, 3.5" WP Aluminum Intake || Matt Damond OCC, Shifter Plate, EGR Delete || Racing Beat Rear Endlinks || Relentless PnP IM || SPC Balljoints || Whiteline RSB || The Company of Which I Will Not Name Front & Rear Diff Mounts 1990 Miata I like it raw | |
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09-06-2016, 08:37 AM
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| Not Ranked : 0 score Computer Flash My BCM went bad as well, taillights/dashlights go off intermittently when headlights are on. I have a replacement, but was told I need to get the computer flashed after I install it. Did you need to do this after your swap? |
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09-06-2016, 08:47 AM
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| The Following User Says Thank You to Vansquish For This Useful Post: | sporkbomb (09-06-2016) |
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02-16-2017, 03:52 PM
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| The Following User Says NO Thank You to Tactown98499 For This Un-useful Post: | g00s3y (02-16-2017) |
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02-16-2017, 04:30 PM
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__________________ All good things must come to an end... Last edited by g00s3y; 02-16-2017 at 04:30 PM. Reason: MSF Database - Automerged Doublepost | ||
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01-23-2018, 10:29 AM
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| Not Ranked : 0 score Dishman316 Hello fellow Mazdaspeed Forum users, I own a 2012 Mazda 6 which I have had for 3+ years now. I look forward to receiving useful tips from this forum!  |
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10-25-2018, 09:04 AM
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| Not Ranked : 0 score  Awesome... but do we have a hot-to on BCM for 2010 Mazda 3?
Absolutely awesome how-to guide with pics..... But does anyone know if we have a BCM replacement for a 2010 Mazda 3? I have searched and searched and cannot find one....  Thanks! Chris | |
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10-25-2018, 09:18 AM
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__________________ 2010 MS3 - Tuned By Nishan Autotech Fuel Pump Internals OBX R Custom Exhaust Cobb SF Intake & TIH w. Blitz Filter CP-e TMIC Corksport Dual VTA BPV JBR 88 Duro RMM | |
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10-25-2018, 01:06 PM
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__________________ Mazda for life...or until i can afford something better... 2007 rusted Speed6... Forged with meth and a 3076 in progress... 1993 Ford Probe KLZE 143dB 2012 Mazda3 Gs-sky 6.5l/100 when transporting speed parts 1989 GM 6.2 diesel pickup Wife drive 2010 CX7 2007 speed3 burned (i'm proud to ran 12.7s with it) ...Because French Canadian... If you check for leaks and you didn't made a test under compressor pressure, you aren't done checking for leaks.... | |
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10-25-2018, 04:07 PM
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__________________ 2010 MS3 - Tuned By Nishan Autotech Fuel Pump Internals OBX R Custom Exhaust Cobb SF Intake & TIH w. Blitz Filter CP-e TMIC Corksport Dual VTA BPV JBR 88 Duro RMM | |
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| The Following User Says Thank You to Bertospeed3 For This Useful Post: | monkey.bones.007 (10-25-2018) |
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10-25-2018, 11:31 PM
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__________________ 94 M MS6 IS350 |
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10-26-2018, 06:59 AM
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__________________ Mazda for life...or until i can afford something better... 2007 rusted Speed6... Forged with meth and a 3076 in progress... 1993 Ford Probe KLZE 143dB 2012 Mazda3 Gs-sky 6.5l/100 when transporting speed parts 1989 GM 6.2 diesel pickup Wife drive 2010 CX7 2007 speed3 burned (i'm proud to ran 12.7s with it) ...Because French Canadian... If you check for leaks and you didn't made a test under compressor pressure, you aren't done checking for leaks.... | |
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