ECU multiplex

Here you can post / find ECU expressions.

Return to Dictionary

ECU multiplex

Postby Alex.T » Sun May 27, 2012 10:22 am

What is this multiplexed, pre-multiplex, 4hx all about? And what is the difference when remapping?

User avatar
Alex.T
Gold
 
Posts: 170
Joined: Sat May 26, 2012 3:26 pm
Location: Milan, Italy

Re: ECU multiplex

Postby OdinEidolon » Sun May 27, 2012 11:07 am

Alex.T wrote:What is this multiplexed, pre-multiplex, 4hx all about? And what is the difference when remapping?


4HX: 2.2HDi engine code
full-multiplex: http://en.wikipedia.org/wiki/Multiplexing, in short, multiplexing makes carrying of information from different sources on a single channel possible by polling one source at a time with a fast rate. This increases the transfer rate of the system while decreasing the number of wires
pre-multiplex or part-multiplex: only partially multiplexed cars

On 406s, the switchoff between multiplex and part-mux happended somewhere between 05/2001 and 07/2001.
If your car has the "thinner" stalks it is pre-multiplex, if it has the "fatter", more modern ones it full mux and has the COM2000 system.

COM2000 is the assembly of indicators, lights and such stalks behind the steering wheel.While being more pleasant looking and a little more powerful, the COM2000 is also more prone to breaking than the pre-multiplex system.

A multiplex system also offers more configuration possibilities inside the BSI, by using PP2000. For example you can activate / deactivate auto lights, power-after-shutdown for windows, beeps and such stuff.

When remapping there is no difference.

OdinEidolon
Site Admin
 
Posts: 362
Joined: Wed Mar 28, 2012 10:41 am
Location: Belluno, Italy

Re: ECU multiplex

Postby Alex.T » Sun May 27, 2012 11:54 am

Thanks for the info! I already knew what multiplexing was but didn't understand what it has to do with remapping

User avatar
Alex.T
Gold
 
Posts: 170
Joined: Sat May 26, 2012 3:26 pm
Location: Milan, Italy

Re: ECU multiplex

Postby OdinEidolon » Sun May 27, 2012 12:07 pm

Alex.T wrote:Thanks for the info! I already knew what multiplexing was but didn't understand what it has to do with remapping


you're welcome!

OdinEidolon
Site Admin
 
Posts: 362
Joined: Wed Mar 28, 2012 10:41 am
Location: Belluno, Italy

Re: ECU multiplex

Postby Blackbirdn1 » Mon Apr 21, 2014 2:38 am

Alex.T wrote:Thanks for the info! I already knew what multiplexing was but didn't understand what it has to do with remapping


Helped me as well. thank you very much. Love that people really share knowledge here.

Blackbirdn1
New user
 
Posts: 3
Joined: Sat Mar 22, 2014 4:57 am
Location: Hamburg

Re: ECU multiplex

Postby spite » Sun Oct 04, 2015 10:58 pm

Nice info :thumbup:

spite
New user
 
Posts: 3
Joined: Sun Oct 04, 2015 10:43 pm
Location: Bulgaria


Return to Dictionary

Who is online

Users browsing this forum: No registered users and 0 guests