Go Back  

DIY Electric Car Forums > EV Conversions and Builds > Technical Discussion

Register Blogs FAQ Members List Social Groups Calendar Search Today's Posts Mark Forums Read

Reply
 
Thread Tools Display Modes
  #1  
Old 08-04-2012, 12:48 PM
DougM DougM is offline
Junior Member
 
Join Date: Aug 2009
Location: Ontaio, Canada
Posts: 9
DougM is on a distinguished road
Default Vehicle Anti-theft system by-pass

Has anyone every had trouble with the existing vehicle anti-theft system when doing a conversion? I am in the closing stages of my 2000 Mazda B3000 conversion and I can't figure out how to stop the headlights from flashing when use the existing key switch to activate the main contactor. I have searched many forums and no luck yet.
I have removed the vehicle ECU (not possible to re-install because I threw away the wire harness with the ICE) and the security module is disconected.
Any suggestions?
Reply With Quote
Sponsored Links
  #2  
Old 08-04-2012, 01:06 PM
McRat's Avatar
McRat McRat is offline
Senior Member
 
Join Date: Jul 2012
Location: Norco, California
Posts: 442
McRat is on a distinguished road
Default Re: Vehicle Anti-theft system by-pass

Not a Mazda guy, but ...

The Body Control Module is what causes the headlights to come on most cars.
It also does power windows, instruments, interior functions, wipers, etc.

Since you already got rid of the ECM, this might be problematic, if it's in charge of communicating via the OBDII port. You won't be able to reflash via the port.

You really need to ask the question at a Mazda performance forum, where folk do engine swaps. On GM's, we program that feature out of the computer. I imagine the same is true for other brands.

Somebody might be able to reflash your BCM if you send it to them.
__________________
Diesel Hotrodder
Reply With Quote
  #3  
Old 08-04-2012, 01:46 PM
DougM DougM is offline
Junior Member
 
Join Date: Aug 2009
Location: Ontaio, Canada
Posts: 9
DougM is on a distinguished road
Default Re: Vehicle Anti-theft system by-pass

Thanks, i was hoping it didn't have anything to do with the ECU. I thought the flashing must be controlled by a relay, but i can't find it. I've tried disconnecting almost everything in the instrument pannel, no luck. Mazda pick-up trucks of this era are clones of the Ford Ranger. Any Ranger guys see this before?
Reply With Quote
  #4  
Old 08-04-2012, 11:39 PM
emosun emosun is offline
Member
 
Join Date: Jul 2012
Posts: 75
emosun is on a distinguished road
Default Re: Vehicle Anti-theft system by-pass

Well I do know that on a ford vehicle like that , the antitheft has to be disabled with the remote on the keys.

Even if you have the correct set of car keys , the system will assume the locks are being picked and the alarm will sound. Only the remote can enable and disable the alarm.
Reply With Quote
  #5  
Old 08-09-2012, 09:27 PM
DougM DougM is offline
Junior Member
 
Join Date: Aug 2009
Location: Ontaio, Canada
Posts: 9
DougM is on a distinguished road
Default Re: Vehicle Anti-theft system by-pass

I got it! It wasn't the security system causing the headlights to go haywire. It was the daytime running light module. Apparently Ford/Mazda DRL modules have a history of failing in this manner, causing the lights to flash.
Thanks for the replys, and I hope this can help others.
Reply With Quote
Sponsored Links
Reply

Share or Bookmark this

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

 

All times are GMT -6. The time now is 06:02 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
Copyright 2009 Green Web Publishing LLC
Ad Management by RedTyger