|
Issues | Warranty | Recalls / TSB Problems, issues, recalls, TSBs |
|
Thread Tools | Search this Thread |
03-04-2014, 08:24 PM | #29 |
TURBOLICIOUS
Join Date: Nov 2013
Drives: a machine :]
Location: DALLAS, TX
Posts: 340
Thanks: 158
Thanked 243 Times in 126 Posts
Mentioned: 15 Post(s)
Tagged: 0 Thread(s)
|
Wow sounds like a total pain in the ass just to change a few bulbs. Glad I came across this thread and hope they find an alternative fix instead of replacing the entire BUI module.
|
05-28-2022, 05:23 AM | #30 |
Senior Member
Join Date: Dec 2011
Drives: Many types of cars in R&D.
Location: Southern California, USA
Posts: 902
Thanks: 585
Thanked 3,058 Times in 568 Posts
Mentioned: 101 Post(s)
Tagged: 1 Thread(s)
|
Reason the BIU blows…
The BIU (body computer) has a series of diodes inside on the door switch grounding to isolate the two door triggers. This so that the window drop feature when door is opened on one side or another can operate independently and not drop both windows when one door is opened. Now diodes are a tricky things designed for a very specific electrical loads and do heat up and blow if they are loaded with more devices like adding lamps, or using LED with dedicated diodes within it too.
The diodes in the BIU aren’t replaceable and are part of the circuit board so if you blow diodes on the BIU, you’re pretty much going to need to replace it. Upon replacement, you also need to reprogram it as it retains the codes for the ignition key chip transponder as well as ECU handshake, and radio key for remote key fob. (Spelled very expensive trip to the dealer). So if you’re installing an aftermarket addition, such as alarm triggers, auxiliary power ports, or to the interior lamp or anything on a BIU circuit, it’s best to just run new set of wires separately, and isolated from BIU circuits.
__________________
Moto Miwa
www.club4ag.com R&D Driving Engineer, Product Planning Consultant Consulting Member at Cusco, OEM+, RS-R. www.club4ag.com |
The Following User Says Thank You to Moto-P For This Useful Post: | BRZyJ (05-29-2022) |
05-28-2022, 11:35 AM | #31 |
Senior Member
Join Date: Mar 2018
Drives: Toyota 86 GT Limited PP (Model G)
Location: Italy
Posts: 1,023
Thanks: 406
Thanked 341 Times in 190 Posts
Mentioned: 14 Post(s)
Tagged: 0 Thread(s)
|
I have a spare BIU in EU, if somebody needs it.
P.S.: @Moto-P just in case you still have and want to sell the pre production accelerator pedal, please contact me! |
05-29-2022, 07:15 AM | #32 |
FT86Club Vancouver
Join Date: Jun 2012
Drives: BRZ Sport-Tech; Drove: MR-S, AE86
Location: Vancouver, BC
Posts: 2,532
Thanks: 391
Thanked 1,179 Times in 633 Posts
Mentioned: 16 Post(s)
Tagged: 2 Thread(s)
|
I had a friend who also blew their BIU while trying to install LED courtesy door lights... I've successfully installed mine without any issues but I use expensive CANBUS LEDs, not the cheap ones... 10 year still going strong. *Knock on wood*
Speaking of which, I think it's safe to say... If these go out in the future, I would unhook the battery and wait a while for all electrical components to discharge before touching those courtesy lights again.
__________________
1984 AE86 BT 20V 5MT 2007-2012
2000 MR-S 5MT 2010-2012 2013 BRZ Sport-Tech 6AT Since '12 (OEM+ STI tS Build) 2015 Lexus IS250 AWD F-Sport 2 2015-2018 2018 Lexus NX300 F-Sport 3 Since '18 |
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Driver's side window seal/door seal | KAB-FRS | Issues | Warranty | Recalls / TSB | 255 | 01-01-2021 06:09 PM |
Driver's door rattle | TuxedoCartman | Scion FR-S / Toyota 86 GT86 General Forum | 38 | 07-31-2013 09:34 PM |
FRS door marker light question | Alalbaster Krunnk | Cosmetic Modification (Interior/Exterior/Lighting) | 3 | 08-22-2012 01:09 PM |
Door Light - After the part number for this | DriftEightSix | Cosmetic Modification (Interior/Exterior/Lighting) | 0 | 07-07-2012 03:49 AM |