new ecu no crank cant see PRNDL changing

[ineptmath]

old ecu died, i had one with same OS different serial i copied the data across and deleted vatsx2 starter diag and . i can start via jumping the starter. starter gets no signal on wire. also noticed transmission dosnt show any gear changes. and no crank signal getting sent. car was running prior to ecu dying.

reads o2 sensors and pedal. brake lights work no reverse lights or park lights. car is a nissan patrol with a gen4 6.0l swap and 6l80e with a bcm

im abit lost what my next step is. ive checked all fuses and seem to be fine wiring seems to be fine.

i did not change the vin in ECU. i did not change anything in the TCM.


included is the new file, the og tune file, and a log of me trying to start and swapping gears

most of those dtc's where there before i did the ecu swap i will start checking them now thank you for the second set of eyes and more brains than i posses.

[blindsquirrel]

Same OS, sure, but it's from a different model, and all the segments other than the main OS are different. This is not how you swap out an ECM on a GM Gen 4. It needs to be SPS programmed with the actual vehicle's VIN number.

edit: And you DID change the VIN, by putting an ECM with a different VIN in it, that does not match the rest of the vehicle.

[ineptmath]

understood. sorry my interpretation is wrong. i thought vats delete null and voided that. ok then. so to proceed i connect up my j2**** cable and connect to tis and put in the original vin ? then copy the OG tune file back onto the ecu is that correct ? so in hindsight i wasted 2 credits ?

[blindsquirrel]

It would have cost another two credits anyway anyway, it's a different ECM with a different hardware serial. I'm not sure if it'll cost another two after programming it.

Yes, just SPS it with the same VIN as was in the previous ECM.

[ineptmath]

got to love it. only time ive ever NEEDED this cable i cant find it lol. will report back with procedure and outcome once i can find the bloody thing on the chance i cant find my passthru device, is there a way to do it with my hptuners cord and editor eg. change vin.. then ive read references to segmentation swapping.

edit watched the video on segement swapping, can i change vin through editor then segment swap everything over and write entire ? nevermind, read the answer hptuners can only write 6/8 segments

[ineptmath]

ok so i cant find the cord, deceided to try the ECU that wasnt readable (original) after giving it 24 hours to reset, plugged back in and reads and dosnt create the same shorts/relay errors that it was giving prior. again wont start and wont read transmission changing gears any ideas? the only thing i can see that has changed on it from the original ecu read to now after 24 hours out. is some CVN numbers. currently trying to do the link trick to bcm incase this is it.


edit: sorry that was incorrect. after a start and die it went back to exibiting the same issues, tripping fuel relay no spark i believe. swapped ecu;s back to the one ive half programmed starts easy off jump starter, and displayed none of the issues. how ever still cant communicate with transmission via computer. mechanically changes gear, computer just shows as neutral

[ineptmath]

ok am i wrong in thinking these should be able to speak with out sps programming ? both ecu OS id's match, yes there is some segment differences which im trying to figure out at present. but then both os ID's also use the same TCM id with the exact same segments.
shouldnt i be able to get these to talk?. should i just copy the different segments over. do i need to change the vin ? i have vats disabled.

[ineptmath]

alright found my j2534 passthru, wrote correct vin and ecu to the ecu and wrote bcm still dont see any change on the gear selection of tcm.

[blindsquirrel]

Post the full read of both ECM & TCM as it was when it last worked, and then do the same for what is in it right now after all these changes.

[ineptmath]

will do it shortly, i didnt write a new tcm via SPS, because it told me modules where already upto date should i just over ride this ?. sorry if this is frustrating for you. im just a dude working in his back yard on my cars and sometimes friends

i replace&reprogrammed BCM then replace&reprogrammed ECU both to same vin

[blindsquirrel]

The 'new ecu' file doesn't have the transmission. Does it not read now?

im just a dude working in his back yard on my cars

Hey, look, same here. Retired dealership guy.

I got my interior back together today after having to pull the whole fkng console out because the stupid plastic bushing that holds the cable eye onto the shifter disintegrated on me and almost left me stranded at the fkng grocery store. I had one single tool in the whole truck, that happened to be a 5/16" ignition wrench (90* open end) that I could fish around with and hook the cable enough to get the thing into 'D' and limp myself back home.

[ineptmath]

my mistake. let me get clean read. lol@story. thats just car guy life isnt it hahaha. i just towed this vehicle(3.5t) 2000km across australia after it broke down on me in the bush (had a bag full of engine parts and essential tools. had no idea an ecu is what was going to go on me)
edit:added full read

update::
more testing, more reading.
i copied across og tune file values, jump started it runs the same, still issue of no trans selection. now have p0700 code, p1915, p0182E.

more reading indicated transmission should of received some voltage at some point to give the 182e code. i go inspect plugs and wires and trace loom back. seems fine. where loom seperates from trans loom is where it goes to crank sensor and starter motor signal. found evidence of heat on the loom enough to burn through the protective casing.. going to go drop starter and inspect/probe everything. change crank sensor out. as ive read that can give alot of the issues car did have. and even stop transmission reading (whether thats correct or no who fking knows.) report back with update.


update 2:: ok changed crank sensor, not that i could see anything wrong with it just that it has been mentioned a few times and had a spare on the rack. checked wiring by eye and with lamp(signal tracer broken) remounted starter still no joy no change. in the logs i dont believe im getting a crank request signal.. i dont know what that means and how to fix that

update3:: reflashed write entire TCM calibration now ive lost mechanical gear changing. and transmission reading as only in park not giving codes. previously was reading neutral but i had mechanical change still no start off key.

update4:: wouldnt let me sps reprogram the tcm gave error E4491/E4423,

ok end of day. im at he same place i started basically
start via jumping the starter
engine runs fine responsive.
gearbox now accepts mechanically that im changing gear. still nothing in the computer and no reverse lights park lights ect.
3blue relays under kick panel above fuse box all tested with 12v battery all working.
all fuses seem to be fine i will test and replace and rub em back on friday when i can work on it again.
wiring will all be coming out to make sure its fine(under dash)
bcm wiring+voltage testing incomplete still figuring out the layouts

[blindsquirrel]

Reading all these different things happening now, is it possible the initial failure was wiring, and not the ECM? Meaning, the solution isn't going to be found in the modules or their programming/settings?

[ineptmath]

i do understand that now after all these paths have been approached. tomorrows job is all the wiring out and going through it. the only reason i still believe the ECU to be corrupt is because. if i plug it back in i get issues with it that i dont get with this fresh ECU. being bad fuel delivery (sorry i dont have the data to quantify this), fuel pump relay playing up, back firing just running crap. but the same calibration on another ecu and it runs fine. either way, yes i believe there is a wiring gremlin. i wasnt able to play with car today. tomorrow i am becoming a master of wiring

just an update so all data is in one thread as convoluted as i am try help the next person.

Original: e38 12635862 AAKC barcode 86aakck201032gf7 serv# 12633238 0103
Replacement: e38 12635862 AAKC barcode 86aakck19254lwl0 serv# 12633238 9254
replacement ecu SPS replace&reprorgram with original vin
bcm replace&reprogram (thought i had to do this to link it or what ever Bull$pit they have running in the background.

just drove it out the front of my house and backed it in and reversed it into a better workable space.

it did let me pull code list: p0122-3,p0223,p0315,p0700,u0121(dont think this one is relevant as im almost certain there is no EBCM)

believe that to be pertinent information of a wiring issue. although i am very unlearned in this stuff. going through it all now. will take me some time.

[blindsquirrel]

You're aware there are about fourteen thousand differences (estimate, I may be guessing a little on the high side) between patrol.hpt and new ecu ute vin tcmnecu read stock values ecu.hpt, right? The segments are different between them, too. I tried looking up the calibration history but the Opel site doesn't work on that VIN for whatever reason. Not for the ECM anyway. So I can't see if the segments are different because they're simply newer updates or if the old/original ECM might've had them changed at some point.

[blindsquirrel]

Original: e38 12635862 AAKC barcode 86aakck201032gf7 serv# 12633238 0103
Replacement: e38 12635862 AAKC barcode 86aakck19254lwl0 serv# 12633238 9254

Just an FYI, if you have the ability to SPS them the only part of that that's relevant is the Service Number. The others like part numbers and the 4-letter codes are what it turns into after programming with a specific calibration for a specific VIN. Those don't have to match beforehand.

[ineptmath]

edit:just realised what you meant. yes i know what you are saying that was the file directly after i flashed it and it put it back to a OEM state. after that i copied all the data across the only differences in the files are the segements and a cvn will update in a moment
no i am not aware. probably why my posts are the way the are, compared to people that know. but thank you for the hints its helping each time.

i have probably fubar'd something already along the way. as im sure u can realize its not the easiest to sift through all the information online and know what is correct and what is garbage, but slowly i learn abit more.
ok been looking through the wiring still not finished. dunno how pertinent this information is. the calais BCM unchanged, also exhibits the same effects as the bcm that came with car. eg no transmission lights. car starts off jumper no park lights ect.
continuing with wiring

ok this file has everything matching that i could. now. what do i do about the rest?2calibrations.png
these are the segements it gave me after replace&reprogram in SPS, can i just overrride them with a segement swap and write entire? is this going to be contributing to a no crank condition that im suffering? why is car *driveable* if i jump the starter.
just questions i have to ask my self not being in industry. yes i am sifting through thousands of posts trying to figure out the answers and have been for 18 hours a day.

::update ok opened up the bcm, who ever did the conversion did some wiring in the bcm looks to be a 12v in to a relay 1 side of the relay goes to ignition key low X1 pin2, other side goes to reverse lamp x5 pin 24. interestingly it doesnt hold 12v it drops down to about 8, so ill try find the other end of it tomorrow and figure out whats happening therebcm.jpg
so by earthing the green wire earlier i was able to turn on and off the reverse lights. now im not but that maybe because the voltage is dropping or what ever. again test tomorrow just updating. if anyone knows what this guys done feel free to explain it to me. note. pink wire is connected to coil and com pin or outer and middle and has 12v coming IN, green wire connects to the reverse lights pin. yellow wire is the ignition low. but then again now im just second guessing my self guess ill have to rip it open again tomorrow and confirm

[blindsquirrel]

ok this file has everything matching that i could. now. what do i do about the rest?2calibrations.png
these are the segements it gave me after replace&reprogram in SPS, can i just overrride them with a segement swap and write entire? is this going to be contributing to a no crank condition that im suffering? why is car *driveable* if i jump the starter.

I don't have any way to know if the segments in the old file are there because that's what the 'current' calibration from GM used at the time that ECM was programmed, or if those segments were from some other file and were swapped in to make it work in this swap. It's an unknown and those are never good.

You can try segment swapping all 6 from the old file into the new (including Main OS) just to see if it makes any change to anything. There are two more segments for throttle that aren't in the editor or .hpt file, but you can see their IDs/CVNs in log files (the 'Details' tab) if you compare a log from the old ECM to one from the new one.

[edcmat-l1]

What a cluster F.....

[ineptmath]

I don't have any way to know if the segments in the old file are there because that's what the 'current' calibration from GM used at the time that ECM was programmed, or if those segments were from some other file and were swapped in to make it work in this swap. It's an unknown and those are never good.

You can try segment swapping all 6 from the old file into the new (including Main OS) just to see if it makes any change to anything. There are two more segments for throttle that aren't in the editor or .hpt file, but you can see their IDs/CVNs in log files (the 'Details' tab) if you compare a log from the old ECM to one from the new one.

i pulled the pcm and saw 4 digits written on it and instantly thought fck who ever did this build has used different files.

cheers, whats the chance of bricking doing segment swap like this? or is it fairly safe having sps available to reprog ?. ill give it a go later.
the ecu that i reprogrammed to match this vin, can that ecu be reprogrammed back to its original vin and calibration of which i have the bcm and trans ?

edcmat-l1 yes abit of a mess at the moment. but ill figure it out eventually