actually, I could pretty easily hook up the Freelander V6 engine ECU, Jatco, ABS and a cluster on the bench and look at the CANbus messages to see if they look any different to the 1.8K series. I just can't get it on a running engine.

so you think that a Freelander ECU sends different data (or data in a different format) to the Jatco ECU compared to a Rover 75 ECU? If that's so then a Freelander Jatco ECU isn't actually compatible with a Rover 75 engine ECU. I hadn't even considered that. The good news is that I can probably...

I suspect that they are at least coded to the gear ratios of the gearbox and whether it's petrol or diesel. I have also had a think about this C1151 error that I'm getting. Hill descent only works with the auto locked in 1 or R right? So if the gearbox ECU is in a really bad state (for...

it's a Rover 75 auto ECU. The Jatco gearbox ECU seems happy with the engine ECU, the problem is that the ABS ECU doesn't like it. Something inspired me to go an look and the garage, and there was the Jatco ECU that came from the auto V6 donor vehicle. So at least I now have a matching Jatco...

I don't think it's a wiring problem. I think that the ABS ECU is receiving CANbus data that it doesn't like because that particular ABS and Jatco combo aren't compatible.

Today I started splicing (temporarily) a Jatco ECU into the car). The Jatco ECU seems to be picking up data from the Engine ECU alright though I notice that it wasn't picking up the brake pedal However I also have hill descent warning on again :-( with this error from the ABS controller...

Yes the screenshots are from pscan. It doesn't have the ability to recode a Jatco ECU. I also heard that they all have the same hardware just different configs. I am going to use a V6 Freelander Jatco ECU from the same vehicle that the gearbox came from. There is a small leap of faith left that...

A stock Freelander ECU won't pick up the hall effect crank sensor that goes with the Jatco transmission.

Hill descent integration: working EVAP temp sensor input: working Fan relay outputs: relays connected but fans not yet wired up A/C switch input: working (read from Freelander cluster) Trinary switch input: working A/C clutch output: working

a minor bit of progress this morning. I have been able to get the R75 ECU (NNN000110) to pull in the A/C clutch on a running engine by disconnecting the Freelander cluster and emulating a 75 cluster firing in the A/C switch signal. The next step is to get Andrew to modify the NNN000110 firmware...

TFL checker says that it isn't compliant

You have made me realise something, so thank you for posting. That is, now I have a Rover 75 auto engine ECU working in the Freelander, if I can't make the V6 auto transmission work I do have another option which is to put a Rover 75 gearbox and transmission ECU in it and just go FWD. It would...

I took the Jatco auto ECU from the same vehicle that I got the transmission from (a prefacelift V6 Freelander 1). My understanding is that the shift points are defined by the Jatco ECU and not the engine ECU. I am told that the R75 auto engine ECU is basically the same as the manual one but...

I don't think that I will need a TD4 cluster after all. I now have an NNN000110 ECU that picks up the EVAP sensor directly (just like the stock Freelander ECU, though on pin 10 instead of 47) therefore I don't need to get it from the cluster.

well.... except for hooking up a Jatco ECU of course

some more progress. I now have firmware for Rover 75 NNN000100 NNN000110 ECU that recognises the Freelander 1.8 Evap sensor, though it does involve repinning the wire from pin 47 to pin 10 (easy with a paperclip). Next steps are that I need to fake the Rover 75 trinary switch, hook up the...

ipads are not supported, because I don't have one to develop on. Developing on iphone/ipad needs a big investment in Apple stuff. Any old laptop pretty much will do, old Windows 7 or you can use Linux too. Something like a Dell D620 or D630 is plenty. Also there is a Raspberry Pi version...

apparently the shape of the teeth is different for VR and Hall Effect sensors, and if you use a Hall Effect sensor (which a 75 ECU needs) it won't like the shape of the teeth that PG1 flywheel has.

I think I know what the problem is with triggering the A/C. Freelander instrument cluster sends 0x80 in B0 of 0x615 to turn on the A/C whereas Rover 75 sends 0x40.

I appear in the last few minutes:-