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xiaotec "850 OBD-II" Android app on Google Play for '96-'98 850/S70/etc

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esl_97_850_T5
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xiaotec "850 OBD-II" Android app on Google Play for '96-'98 850/S70/etc

Post by esl_97_850_T5 » Wed Oct 25, 2017 1:33 pm

If you want to use an Android device and an ELM327-compatible Bluetooth tool to diagnose problems on your '96-'98 850/S70/V70/C70/XC70, you might want to consider downloading from Google Play:

- the "OBD Now Terminal" ELM327 terminal emulator app,
- the "ElmBasic" ELM327 terminal emulator app,

and, most especially,

- the xiaotec "850 OBD-II" scanning (with interpretation) app (which also has an imbedded ELM327 terminal emulator).


The first two are free, whereas "850 OBDI-II" costs $1.99. The most useful of the three is "850 OBD-II". However, I'd suggest downloading all 3 of them **IF** you want to use your '96-'97 850 or '97-'98 SVC70 OBDII port for diagnostics via an ELM327-compatible device.

With an ELM327 terminal emulator, issue ATZ and get the ELM327 version string (eg, most commonly "ELM327 v1.5"). Issue ATI and get the same ELM327 version string. Then issue "ATIIA51" and see if it responds with "OK", or if it responds similar to how the ATZ and ATI responded (ie, with an ELM327 version string). If the "ATIIA51" responds with "OK", then you might be able to use your Bluetooth device to talk with the COMBI, SRS, ABS, etc.

If the Bluetooth device responds to ATIIA51 with an OK, then I'd suggest buying xiaotec "850 OBD-II" from Google Play for $1.99. That '96-'98 850/S70/V70/C70/XC70 (and others) scanning app also has an in-built ELM327 terminal emulator. But the "850 OBD-II" app's forte is that it does the scanning of the KWPD3B0-conversant ECUs. On my '98 S70 GLT, it fairly consistently scans COMBI, SRS, ABS, AW 50-42, ECC, and VGLA, and reports their DTCs, interpreting them similar to how Volvo 850 S70 keyword D3 B0 protocol interpreter interprets those DTCs. The "850 OBD-II" app is actually the quickest way to scan my car if all I want to do is scan those ECUs for DTCs.

xiaotec "850 OBD-II" also reports the Hardware/Software Ids/Revs of each (KWPD3B0-conversant) ECU it was able to connect to.

It performs the COMBI Gauge Test consistently well.

I'll leave it to you to explore the app's other functions to see if they work or not. I've included some info about the app in the xiaotec "850 OBD-II" Android app section on one of my jonesrh.info pages.

Even though "850 OBD-II" can be used to do the OBDII scanning a little (via 0100, 0101, 03, 07). It is usually FAR, FAR better for you to use regular OBDII scanning software, like your Torque-lite or one of the many other capable OBDII scanning software, when you want to do OBDII emission diagnostics.

"850 OBD-II" is a work-in-progress. Be patient. Appreciate what you do get for that $1.99. Reap the benefit of the functions that do work well or fairly well (SCAN, GAUGE TEST, etc), and don't get hung up on the functions that do not work well at present. Give the author constructive feedback. As of 2017-10-21 or so, he is actively seeking feedback on what doesn't work.

You'll probably find the "850 OBD-II" app is an Android/ELM327 solution to Reset SERVICE Light (like volvo850diag/ELM327 and Vol-FCR/KKL can do on Windows). I've used that "850 OBD-II" facility in previous versions of the app, but haven't tested it lately.

You might find the "850 OBD-II" app is an Android/ELM327 solution to clear SRS DTCs when there's not an underlying persistent SRS problem (like volvo850diag/ELM327, Vol-FCR/KKL, and Brick-Diag Free/KKL can do on Windows, and like a much costlier DRAPER-like tool can do).

In fact, the "850 OBD-II" app tries to clear all DTCs for **ALL** ECUs at the same time -- at least that's how it worked in V0.5d. Some people might like that "clear all the car's DTCs at once" convenience. Whereas, (on Windows) in volvo850diag or Vol-FCR or Brick-Diag Free, you clear all the DTCs only for 1 single ECU at a time. I don't recall if "850 OBD-II" attempts to issue 04 to clear the CEL/MIL (like volvo850diag can do, and like any self-respecting OBDII emission diagnostic software can do, but which Vol-FCR and Brick-Diag Free can do only by clearing the DTCs of the ECM, eg, Motronic 4.4, MSA 15.7, and/or TCM, eg, AW 50-42). If "850 OBD-II" does not yet clear the CEL/MIL using the OBDII 04 command, you could very likely ask the author to add that as part of the Clear DTCs function.

You might find the "850 OBD-II" app can reprogram the SERVICE Intervals to your liking. I haven't tested that recently. But I do know that as of V0.5d (a couple of years ago), almost all of the SERVICE Interval reprogramming was working correctly. Hopefully, it's been perfected by now. If "850 OBD-II" screws up the SERVICE Interval reprogramming, you can always restore it using volvo850diag on a Windows system. In most ways, volvo850diag (on Windows) is a better solution for SERVICE Interval reprogramming, but you might find the "850 OBD-II" Android solution works well enough for your SERVICE interval reprogramming needs to avoid having to hassle with acquiring a Windows system and getting volvo850diag operational.

You might even be able to cajole the LIVE data function to connect reliably. Good luck with that [the "850 OBD-II" LIVE data function worked much better in V0.5d than in the V0.9.5 that I most recently tested with]. When the "850 OBD-II" LIVE data function does work, there are some very interesting things that can be seen, since it scans (and interprets in realtime!) at such a high rate compared to volvo850diag's scan rate. Of course, with OBDII emission diagnostics, it's much better to scan Live data using Torque-lite, OBDLink (Android app), or one of the many other good Android apps focused on regular OBDII emission diagnostics, and that has gauges, graphing, etc. But the "850 OBD-II" LIVE data function's primary usefulness -- when you can get it to connect -- is in scanning the KWPD3B0-conversant ECUs: COMBI, ABS, AW 50-42, etc -- something that no other free or low-cost software dedicated to OBDII emission diagnostics can do (to my knowledge, except for some versions of OBDwiz and TouchScan, in conjunction with some TouchScan-oriented scripts provided with volvo850diag).

And there's even more that the xiaotec "850 OBD-II" Android app purportedly can do.

Hoping some others find "850 OBD-II" app useful...
1998 Volvo S70 GLT - 201K miles - S70 and M44 testbed in 2016-2018; daily driver
1997 Volvo 854 T5 - 147K miles - 850 testbed in 2012-2017; junked 2017-09

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Re: xiaotec "850 OBD-II" Android app on Google Play for '96-'98 850/S70/etc

Post by esl_97_850_T5 » Fri Nov 03, 2017 1:29 am

Forgot to explicitly mention in the prior post that pressing the xiaotec "850 OBD-II" Android app's SCAN button has read the mileage from the COMBI ECU of my:

a) USA '96-'97 850 T5's VDO COMBI cluster, and
b) USA '98 S70 GLT's Yazaki COMBI cluster.

The 850 COMBI connections were established successfully the vast majority of times (with consequent successful mileage reading).

The S70 COMBI connections are established successfully the majority of the time. However, all '97-'98 S70/V70/C70/XC70 apparently establish successful connections noticeably less often than the 850. So sometimes you just have to press the xiaotec "850 OBD-II" app's SCAN button again to obtain the S/V/C/XC70 mileage (and other COMBI data). If you're engine is on when unsuccessfully scanning the SVC70 COMBI, then be sure to turn the engine off and the ignition to pos II before pressing the "850 OBD-II" app's SCAN button again. The SVC70 COMBI connections usually work somewhat better with the engine off.
1998 Volvo S70 GLT - 201K miles - S70 and M44 testbed in 2016-2018; daily driver
1997 Volvo 854 T5 - 147K miles - 850 testbed in 2012-2017; junked 2017-09

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Re: xiaotec "850 OBD-II" Android app on Google Play for '96-'98 850/S70/etc

Post by esl_97_850_T5 » Mon Nov 06, 2017 12:36 pm

Several days ago, I tested xiaotec "850 OBD-II" Android app V0.9.8 (release 2017-10-30 on Google Play) and was able to get the LIVE data function working to my satisfaction.

Hint: In the "850 OBD-II" app's V0.9.8 release's LIVE data function, pressing START, then waiting a few seconds, then pressing START again, helped me to establish LIVE data connections more reliably to my '98 S70 GLT's COMBI, SRS, ABS, and AW 50-42 ECUs. You might experiment with a similar approach if your LIVE data connections aren't getting established after the first (LIVE function) START button press.

Click here to see my latest summation of xiaotec "850 OBD-II" Android app capabilities.
1998 Volvo S70 GLT - 201K miles - S70 and M44 testbed in 2016-2018; daily driver
1997 Volvo 854 T5 - 147K miles - 850 testbed in 2012-2017; junked 2017-09

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Re: xiaotec "850 OBD-II" Android app on Google Play for '96-'98 850/S70/etc

Post by RickHaleParker » Mon Jan 08, 2018 8:05 pm

In the Custom Wheel Circumference, what is the data format and units?
What is the "Standard tire" size?
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4
1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4
2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000.

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Re: xiaotec "850 OBD-II" Android app on Google Play for '96-'98 850/S70/etc

Post by esl_97_850_T5 » Sun Sep 23, 2018 4:36 pm

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Last edited by esl_97_850_T5 on Sun Sep 23, 2018 5:10 pm, edited 1 time in total.
1998 Volvo S70 GLT - 201K miles - S70 and M44 testbed in 2016-2018; daily driver
1997 Volvo 854 T5 - 147K miles - 850 testbed in 2012-2017; junked 2017-09

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Re: xiaotec "850 OBD-II" Android app on Google Play for '96-'98 850/S70/etc

Post by esl_97_850_T5 » Sun Sep 23, 2018 5:09 pm

Several days ago, I tested xiaotec "850 OBD-II" Android app V1.0.9 (release 2018-09-18 on Google Play) and was pleasantly surprised to see its Live data function also working for some OBDII live data and some (KWPD3B0/D2-accessible) M4.4 live data, and I could very easily jump from one ECU's Live data to another ECU's Live data for ECUs: COMBI, AW50-42, ABS, SRS, OBDII, M44 -- (usually) using only 2 clicks.

I presume it can also display MSA15.7 Live data, since that is one of the ECUs that can be selected.

Click here to see my latest summation of xiaotec "850 OBD-II" Android app capabilities.
1998 Volvo S70 GLT - 201K miles - S70 and M44 testbed in 2016-2018; daily driver
1997 Volvo 854 T5 - 147K miles - 850 testbed in 2012-2017; junked 2017-09

esl_97_850_T5
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Re: xiaotec "850 OBD-II" Android app on Google Play for '96-'98 850/S70/etc

Post by esl_97_850_T5 » Mon Sep 24, 2018 7:20 am

RickHaleParker wrote:
Mon Jan 08, 2018 8:05 pm
In the Custom Wheel Circumference, what is the data format and units?
What is the "Standard tire" size?
I'm presuming you are inquiring about xiaotec "850 OBD-II" app's Service / Program / TIRE SIZE function.

1. I don't know the answer to your questions.

2. But what I do know from attempting to use the TIRE SIZE function in (V0.5d and) V1.0.9, and my own common sense to avoid experimenting with COUNTRY CODE is: It would be best to heed the Warning: Do *NOT* experiment with "850 OBD-II" app's TIRE SIZE or COUNTRY CODE reprogramming!!! at the end of the analysis of xiaotec "850 OBD-II".

That warning can be summed up here as -- for the foreseeable future --

**Avoid** using "850 OBD-II" app's TIRE SIZE reprogramming.
**Avoid** using "850 OBD-II" app's COUNTRY CODE reprogramming.


esl_97_850_T5
1998 Volvo S70 GLT - 201K miles - S70 and M44 testbed in 2016-2018; daily driver
1997 Volvo 854 T5 - 147K miles - 850 testbed in 2012-2017; junked 2017-09

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Re: xiaotec "850 OBD-II" Android app on Google Play for '96-'98 850/S70/etc

Post by RickHaleParker » Wed Sep 26, 2018 2:03 am

It would be prudent to include them warning on the programing screens of 850 OBD-II.
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4
1998 C70, B5234T3, AW50-42, Bosch Motronic 4.4
2003 S40, B4204T3, AW55-50/51SN, Siemens EMS 2000.

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Re: xiaotec "850 OBD-II" Android app on Google Play for '96-'98 850/S70/etc

Post by esl_97_850_T5 » Wed Sep 26, 2018 2:28 pm

RickHaleParker wrote:
Wed Sep 26, 2018 2:03 am
It would be prudent to include them warning on the programing screens of 850 OBD-II.
You might want to contact the author of "850 OBD-II" and provide him with your suggested wording of the warning(s) you had in mind, and when to issue them. His contact info is both on the Info page inside the app, and it is on his Google Play page.

He is receptive to constructive changes. Just in the last few weeks, I complained about not having a confirmation dialog before actually performing the ClearDTC function which attempts to clear all DTCs in all ECUs. He promptly fixed that problem so ClearDTC in V1.0.9 (2018-09-18) has some sort of Yes / No or OK / Cancel confirmation that works like it should.
1998 Volvo S70 GLT - 201K miles - S70 and M44 testbed in 2016-2018; daily driver
1997 Volvo 854 T5 - 147K miles - 850 testbed in 2012-2017; junked 2017-09

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