VZ ECU with "Very Low Fuel" error after failed SPS flash

[Tazzi]

Checksum error, must be a partial flash then. Did SPS indicate if it was changing the OS? Since if thats where it failed then that will be a partially flashed OS.

As before, cant change VIN with SPS.

[Hydrazine]

SPS makes no mention of changing the OS over before it fails. I made the possibly expensive decision of ordering a Tech2 since no-one close seems to be able/willing to do it. Shame I can't change the VIN tho. I was thinking that when you put in the new VIN in SPS, it would rewrite it. I'm guessing that should still be fine since the ECU came off the same engine and I've got the BCM and PIM for both the old and new VINs anyway so no relinking needed!

[antus]

There are quite a few bad clone vcx nanos around, sounds like bad hardware. Im not absolutely certain but im pretty sure you can pick some options and set the vin with sps (maybe not on a VZ for some reason?), - it depends what options you pick at the start of the process. Screen shot was from setting the vin on a spare bosch ecm in holden202t's cruze. A tech 2 in pass through j2534 with the candi module (or an mdi) are pretty reliable options.

[Hydrazine]

I get that same screen to put in my VIN! We'll see if it takes the VIN when I flash using the Tech2. My suspicion is that it's a bad VCX clone as well, especially since I didn't order from the "official" channels. I've asked for a return so hopefully not too out of pocket. In any case, I found out that you need the Tech2 for the security options anyway (no way to pick a generic J2534 pass through). I'm sure I'll get lots of good use out of the Tech2, even if just for brake bleeding (which didn't even work on the VCX)

[antus]

Sounds like you have it under control now. The tech2win emulator provides the tech2 functionality (literally as a tech 2) for j2534 interfaces.

[j_ds_au]

Knowing the VZ ECUs, nothing will come of it as all the chips are transparent, unlabelled and encased in a clear gel. I opened up my dead ECU before.

See https://www.youtube.com/watch?v=YUrv6xVn3Yo

Eeeeeek!!!

Looks nothing like my old VS ECU/PCM! Nor my VX one AFAIK, though I've not seen it in person (yet).

I can only guess that such a design would use a fairly new (for the time) flash chip that wouldn't need +12V to program. If so, your ECU/PCM wouldn't need +13.5V or more to produce a regulated +12V internally. So it should only require sufficient voltage to indicate a good battery, which means +12.5V (or perhaps even +12.0V) should satisfy it.

Joe.

[antus]

Yes - Its a bosch, not a delco family vn through vy are the same family (p4 then ipcm6). Then vz is out on its own with this bosch, then the sidi stuff came in.

[Tazzi]

Sorry just to clarify, you can type the VIN in manually to select the vehicle cals to be flashed. But SPS itself does not 'write' the actual entered VIN into the ECU after flashing, its just not part of its steps to perform.

Im sure it used to many years ago off the top of my head, but the one I just did on bench this morning did not so I believe they changed its steps to identify changed ECMs when at the dealership maybe.

[antus]

I think you need to choose the prepare for removal from vehicle step, even if its on the bench, or something like that. There is a slightly different process for moving from car to car, but it doesnt need to be in the previous car to do it. You just need the right workflow in sps.

[Tazzi]

I think you need to choose the prepare for removal from vehicle step, even if its on the bench, or something like that. There is a slightly different process for moving from car to car, but it doesnt need to be in the previous car to do it. You just need the right workflow in sps.

For some global A vehicles they have that as an option. They have phased even that out in the newest of new cars since they attempt to do all security/immo stuff automatically so technicians cant 'f-up' the process.

Dear old VZ's dont have the option.

Basically the steps are:
1) SPS to correct OS+Cals
2) Reset ECM using donor car immo code
3) Link ECM to car using desired car immo code

All steps can be done when fitted to the desired car.