R_Lefebvre
Expedition Leader
Yesterday I drove up to Land Rover Salvage in Madoc to work with Dom's Autologic and try and sort out the computer issues.
First thing we did was change the settings in the BCU from Automatic to Manual. This is done in two places, one for the BCU and one for the guage cluster. Once that was done, the cruise control started working again.
Then I reset the 4 Amigos which I believe was due to a bad ground behind the left headlight. I had cleaned that up, and with the codes cleared, now the TC and ABS appear to be working with the manual trans. I don't know yet how effective the TC is off-road, but at least it is active and I don't have any lights. I can do a full-effort stop with 2 wheels on ashpalt and 2 on the gravel shoulder, the truck stops straight(ish) and the ABS is working
Next we tried to reprogram the ECU for manual trans, and that's where it got weird. You can't just change settings like you can with the BCU. You have to do a full flash. First, it asks you which part number you have, and there are 4 choices. I got that off the ECU, and selected it. Then it asks you which engine, 4.0 or 4.6. Ok this is looking good. Then it asks you which emissions homologation, 1 of 3 choices... we had no idea which, but guessed it was the "highest". Then it wanted to program the ECU, without asking about the trans. Not wanting to risk bricking the ECU, we stopped. I'm now wondering if the 4 part numbers are where the choice between manual/auto is done, but that's just weird. Why would they need a different ecu for manual/auto, but both 4.0 or 4.6 can be in the same ECU...
Anyway, I left satisfied that the ABS/TC is working, I don't care so much about the cruise but, whatever. However, now I was getting a CEL every time I started the truck. P0705, transmission range selector malfunction. No big surprise there, but why is it only coming up now? And it's annoying having to reset the light every time I start the truck. This morning I disconnected the transmission controller entirely, and so far, no CEL!
I may have accomplished my goals without having to reprogram the ECU.
The other thing is, previously, my ScanGuage wasn't working well. The readings would come and go. I suspect it was becuase the trans controller was hogging all the bandwidth on the network, I'm not sure. Now with the trans controller disconnected, it's working normally again.
My last tank around town I achieved 15.8 MPG. I think I used to get 14's on the commute/town travel. Based on that, I think I might better my previous 80km/h highway trip of 18mpg when I do that next. 20mpg would be sweet.
Also, I got rid of the maddening key-in-ignition-door-open binger! Sweet, I hate that thing!
First thing we did was change the settings in the BCU from Automatic to Manual. This is done in two places, one for the BCU and one for the guage cluster. Once that was done, the cruise control started working again.
Then I reset the 4 Amigos which I believe was due to a bad ground behind the left headlight. I had cleaned that up, and with the codes cleared, now the TC and ABS appear to be working with the manual trans. I don't know yet how effective the TC is off-road, but at least it is active and I don't have any lights. I can do a full-effort stop with 2 wheels on ashpalt and 2 on the gravel shoulder, the truck stops straight(ish) and the ABS is working
Next we tried to reprogram the ECU for manual trans, and that's where it got weird. You can't just change settings like you can with the BCU. You have to do a full flash. First, it asks you which part number you have, and there are 4 choices. I got that off the ECU, and selected it. Then it asks you which engine, 4.0 or 4.6. Ok this is looking good. Then it asks you which emissions homologation, 1 of 3 choices... we had no idea which, but guessed it was the "highest". Then it wanted to program the ECU, without asking about the trans. Not wanting to risk bricking the ECU, we stopped. I'm now wondering if the 4 part numbers are where the choice between manual/auto is done, but that's just weird. Why would they need a different ecu for manual/auto, but both 4.0 or 4.6 can be in the same ECU...
Anyway, I left satisfied that the ABS/TC is working, I don't care so much about the cruise but, whatever. However, now I was getting a CEL every time I started the truck. P0705, transmission range selector malfunction. No big surprise there, but why is it only coming up now? And it's annoying having to reset the light every time I start the truck. This morning I disconnected the transmission controller entirely, and so far, no CEL!
I may have accomplished my goals without having to reprogram the ECU.
The other thing is, previously, my ScanGuage wasn't working well. The readings would come and go. I suspect it was becuase the trans controller was hogging all the bandwidth on the network, I'm not sure. Now with the trans controller disconnected, it's working normally again.
My last tank around town I achieved 15.8 MPG. I think I used to get 14's on the commute/town travel. Based on that, I think I might better my previous 80km/h highway trip of 18mpg when I do that next. 20mpg would be sweet.
Also, I got rid of the maddening key-in-ignition-door-open binger! Sweet, I hate that thing!