Definitive DSTC identifier? Topic is solved

[Botbasher]

OK... I have completely run out of ways that I know of to identify if my recently acquired 03 V70 T5 actually has the correct ABS module. It has a DSTC button in the dash and seeing what I had to do to get JY STC buttons out, I'm pretty sure it's real. Additionally it has a Yaw Sensor under the passenger seat. That's kinda a lock to me that this car SHOULD have DSTC, right??

OK, so I look at my module. It's part# 8671224. A quick romp over to FCP, IPD or even Volvo say that is an option... If you have STC. FCP even has the 1224 as an alternate to their 8671457, but lists 1457 as a STC/DSTC module.

To add to the confusion, some DSTC modules state DSTC on the label, but those have 4 bolts and I only have 3.

I have DICE on the way, so I'm wondering if there is either a VIN or VIDA or a combo of both way to tell what exact module should be on this vehicle. I've tried Volvo Online, but they list half a dozen modules as well without any really good way to tell what's really need.

I ran through the JY today and found a couple of STC cars (no yaw sensor) and they all had a mix of 8619968 and 8671224 modules too.

This is crazy!! What module should I have on this vehicle. I don't want to have to send this to someone like XeMODeX only to find that MY module doesn't have DSTC in it since those modules are repair only from them.

Anyone have direct experience with the DSTC modules or a way to tell via the car what module should be installed??

Appreciate the advice as I'm running out of hair to pull!!

K "greyer by the second" S

[Botbasher]

Well.... I don't know if I dodged a bullet here or if I've just moved the problem to a new spot, but I figured I'd report what happened and see if it helps anyone ID a module or solve an issue.

The symptoms I had in the car were:

DTSC light on button and dash - no function on button
ABS warning light on
BRAKE light on
Check Engine light on - P0502 & P0571
DIM display showing Brake Failure
Odometer not functioning
Trip computer not functional
Cruise Control not functional

I came home and looked at my car after asking this question. I took a super hard look at the ABS system and determine that there was zero evidence that it had ever been molested. No wrench marks on the brake lines. No scratches, scrapes or other evidence of tampering. The decider was the white paint on the locking tab for the ABS connector. They put that on to verify it was checked during assembly. It was still there on both pieces.

So I ran back to the yard and took a turn on the JY Wheel of Misfortune. I paid $30 for a ABS module with the same 1224 code as my current one. It was actually the 1224 module from the 02 XC that I stripped the interior from last weekend!! It really was in nice shape and now I'm even more confused as to why it ended up in the yard!!

Anyhow... I dropped the module in... Turned on the key and.... No lights!! I started the car and they came on for 2 seconds then went right out like they should, except for the check engine. Grabbed my reader and cleared the code and Walla!! They all stayed gone. So I tested our theory that the ABS feeds the ODO... Yep... I am putting mileage on the car. Apparently the ODO stopped in 2014 @ 132405 so I have a couple years of mileage to make up for!!

So other than the SRS warning in the display and red ! triangle, it appears that the 1224 module is a DSTC unit and appears to have solved the issues. I still cannot turn off the DSTC, but I am guessing that it won't finish properly until I get the SRS cleared. Volvo Safety, right??

So as soon as I get the trans fully fixed, I'll take it out and see if I can get the ABS to function to confirm full operation, but at this state, it passes is self check which is a damn good sign!!

At this time, unless someone has proof to the contrary, I have to believe that the 1224 module is the STC/DSTC since I found it in many cars that have STC and mine with DSTC. The trigger would appear to be the Yaw Sensor being present. Makes sense anyway.

I hope this saves someone some headaches with these modules and shows which ones can be used where, since info on the subject seems to be Merlinesque in origin!

I'll let you know how it goes from here, but I seem to have wiped out about 80% of the problems I had I one simple module swap!! Yayyyyy!!

Cheers!!

KS

[precopster]

Yes you were lucky with the BCM as it's known. The internal software of the 2002 DSTC model at the parts yard happened to be the same as the internal software on your 2003 model. With Vida the software version can be checked in Diagnostics-Network.

All BCMs after 2001 share the same part number however Volvo can program them with or without DSTC depending on options preferred at time of ordering. This keeps production costs down and only one part required on the shelf at the factory. It also means you must go to the dealer if you purchase a used one with the wrong software.

This wasn't the case prior to 2002 as there were two very different modules in use depending on how the vehicle was optioned.

[Botbasher]

Well Pre.... Seems I was not quite so lucky as I thought!

Although the ABS Warning lights went out and the system appears to work (got on it and buzzed the brakes for a split second last evening), the DSTC light on the button, the Yellow Triangle of Exclamation and the "Anti-Skid" warning in the DIM won't go away. There might still have been a DTC error, but it was raining out and we were parked in a place that drew lots of attention for my friend, so we just cleared, reset and left.

So it may be that although this replacement module works the ABS and turns off the urgent warnings, it does not have the requisite programming to allow the DSTC button to function and I am betting that the Text Warning is a result of that.

I'm going to look into seeing if this module can be repaired or I might simply make a list of all the upgrades I want and buy a VIDA sub for 3 days and clear it all up. It might just need to be calibrated via VIDA, but that will have to wait until I get my DICE as I am sure I am wearing out my welcome with Chris!

Anyone want to split a subscription for a few days??

Cheers!

K "DSTC'd" S

[precopster]

If you get a VIDA AND DICE you can contact Yagger here on MVS. He can rewrite a used BCM over the internet using your Dice device and his own software for a few dollars.

You don't need a subscription.

First check the original BCM firmware against the replacement BCM using the "Network" feature in Vida to see if they are at the same level. I can guide you when you get to this step.

[Botbasher]

Funny you should mention that Pre....

I am trying to get VIDA to install on any of the laptops I own as I type!! I may even have to BT it to my desktop if it comes to it!! This is one PITA program to load!!! This one doesn't have enough disk space... this one doesn't have enough RAM... Sheesh!!

I'll hit you up when I have this settled and hit up Yagger after that!

Thanks!!

K "RAMmed!!" S

[Botbasher]

What a drama to find a laptop that would run VIDA! I finally found that my lab R&D laptop had the guts to run it, so I borrowed it last night and ran through getting all the info that I could glean with my meager knowledge of the systems.

Pre... I did find what I think is the info you are talking about under "Network/BCM". It reads like this:

ECU Identification:
Serial No 000000448174
Hardware Number 0008671224 A
Diagnostic Number 08685403 A
Software Number 0008691777 A
Software Number 0008651687 B

Under Diagnostic/Details I can see that under the Anti Lock Brake System, the Value is set to ABS DSTC

Is that what I need?

So do I just need to plug in the other BCM and read this same information (if its live)? Can I simply plug it in or does it need to be installed to prevent damage?

I did find with VIDA that the DSTC button on the dash appears to be non-responsive despite being lit up. I wondered if it might be in the wrong position, so I checked them all and its current position is the only one that it lit up in, so I presume it's correct. Why I couldn't see the switch change state is weird. I watched the brake pedal and other things at the same time, so I know I was doing that right! Maybe it can't operate till the BCM "knows" its a DSTC unit?

It'll be nice to get rid of the Yellow Triangle of Exclamation!! It made it extremely difficult to do the Control Module Adaptation last night. I think I got it running good, but it would have been nice to not have to drive around in circles for an hour guessing if the TCM had enough!

Thanks for the assist and the info. I'll get what ever else I need and then find Yagger to work his magic!

K "VIDA, VITA, VEGAman" S

[Botbasher]

Well... last night the saga came to an end!!!

With the help of fellow members Precopster and Yagger (ok, really he did it all!!), the T5 has no more Anti-skid warnings and the DSTC button on the dash now functions!! The DTC - BCM-0076 is banished from this car forever!!!

It took Yagger about an hour and a half to reprogram the BCM with the proper software. There was no swapping of modules or any wire crossing (needed for some reprograms). I simply skyped him, started the software needed to make this happen and sat back (he runs your computer remotely). He had me turn the key and start and stop the car several times, but after a bit the car stopped clicking and he said "We are ready!" and that was that. Errors gone... function restored.

For what he did his charges were incredibly reasonable and I'll be revisiting him shortly to get the PHM (Phone) module removed from the system which will need some CEM rewiring to make happen. It was after midnight and I was just too tired to think I could finish it!

Thanks to Precopster for the advice and MANY thanks to Yagger for supplying this community with some heavy duty self taught skills!! Big hats off to him!!

Cheers!

K "no mo spin" S