bsi

I'm running a heavily modified car and the eco mode wont go off ive tried numerous resets but it wont work and even if it did go off with the ecu I'm using it would come straight back on, is there a way to bypass so I can have my lights wipes central locking ;working without swapping the whole harness fuse boxes and switches for saxo ones thanks

welly24 wrote:I'm running a heavily modified car and the eco mode wont go off ive tried numerous resets but it wont work and even if it did go off with the ecu I'm using it would come straight back on, is there a way to bypass so I can have my lights wipes central locking ;working without swapping the whole harness fuse boxes and switches for saxo ones thanks

Have you had a look in lexia?

There is a ecomode timer in the .. BSI.. at the position in the picture.

Do you think this could be what you need?

that looks interesting if it will disable the eco mode so it doesn't come on that would work for me ,are the ebay versions of lexia any good for this

welly24 wrote: ,are the ebay versions of lexia any good for this

Yes, try one of these from eBay (here)

There is also a lexia topic (here) worth a read.

ive ordered lexia should get it soon,after altering the delay time will it ask me to start the car to finish the setup as this will be a problem as I don't have a citroen ecu or engine in the car

welly24 wrote:after altering the delay time will it ask me to start the car to finish the setup as this will be a problem as I don't have a citroen ecu or engine in the car

You will need to have a Citroen BSI ECU in the car to get ECO MODE active because it the BSI that generates that message.

ECO MODE clears when the engine is started, via the Engine ECU back to the BSI.

You don't need to start the engine to program the BSI.

next problem then is although I have the fuse boxes I don't have an ecu or the wiring so il have to buy an ecu and wire the minimum so it reads the ecu but I don't have any citroen diagrams ,I assume that the ecu uses canbus to communicate with the bsi

im using a bosch me 7.5 ecu would I be able to pick up a signal from this to the bsi and if so how.i have 2 obd on the car one for the car and one for the engine so I have k line and can high and low wired so could I connect to the bsi some how thanks regards George

welly24 wrote:next problem then is although I have the fuse boxes I don't have an ecu or the wiring so il have to buy an ecu and wire the minimum so it reads the ecu

Eco mode is in the BSI. Do you need to read the engine ECU for something?

welly24 wrote:im using a bosch me 7.5 ecu would I be able to pick up a signal from this to the bsi and if so how

No idea. The C3 ECU swaps are only ever done as a kit of Engine ECU, BSI and the key. If you don't have all 3 matching the immobiliser won't allow fuel but none of this is relevant to you because you don't have the factory engine ECU.