body controll unit

[sierrafery]

Hello my friends, first of all sorry for my English, it is not the best. Could anybody tell me where is located the body controll unit on the Discovery 2 . I’m almost sure that I have a problem with it and I rather replace it entirely than try to fix it because the first authorized service is too far from my home. I'm an engineer and a self didactic guy, I fix my car with my own hands but that problem is over my knowledge. It’s better for me to purchase the unit and just replace it but I could’nt locate it so please help me with some information. All the best from Transylvania.

 

[joey]

Keep in mind when you change the BCU you will need to reprogram the ECU to work with it. That is if I recall correctly.

General
The Body Control Unit (BCU) is located behind the passenger glovebox and is connected to the main harness by four
connectors on its bottom edge and an additional connector located on the side of the BCU casing. Mounting the BCU
behind the fascia makes it reasonably inaccessible for intruders to disable the anti-theft system.
The BCU uses solid-state microprocessor control to perform logical operations and timing functions for a variety of
the vehicle's electrically operated systems, these include:
l Door locking.
l Anti-theft alarm and immobilisation system.
l Exterior lighting including direction indicators and hazard warning lamps.
l Courtesy lighting.
l Wipers and washers.
l Electric windows and sunroof.
l Heated windows.
The BCU also communicates with several other electronically controlled systems such as the EAT ECU and SLABS
ECU and also has a datalink between the Intelligent Driver Module (IDM) and the instrument pack. The datalink is a
low speed bus capable of transmitting and receiving messages at a data rate of 10,400 bits per second. Additional
inputs and outputs to peripheral devices are included which are necessary for determining vehicle status for particular
logical operations e.g. crank, ignition key inserted, fuel flap enable etc.
The BCU receives its power supply from the engine compartment fuse box, and is protected by a 10 A fuse.
The BCU communicates with the IDM to provide the control signals to perform power switching operations in
conjunction with dedicated relays.

 

[sierrafery]

Many thanks, until now I managed with all the problems (mostly mechanical) but it seems that one is above my skills. I will check a specialist equiped with testbook. All the best from Transylvania.