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Old 09-04-2008, 01:22 PM   #1
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Default 08 Sti G-Sensor Data extraction?

Is it possible to get the Data via the OBD?


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Old 09-04-2008, 01:47 PM   #2
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Default Re: 08 Sti G-Sensor Data extraction?

Not unless they have changed it, BUT check out the threads on nasioc about the development of the spiider dccd controller. there's all sorts of info there about how measurements were taken to develop the device.
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Old 09-04-2008, 02:05 PM   #3
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Default Re: 08 Sti G-Sensor Data extraction?

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Originally Posted by MadMedic View Post
Is it possible to get the Data via the OBD?
If I remember correctly, when I had my '05 and was having a problem with the DCCD control module, the tech connected the Subaru Select Monitor device to the OBD port and polled the DCCD controller/G-sensor for information. If you could figure out the protocol specifics (SSM protocol), it should be possible.
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Old 09-04-2008, 02:05 PM   #4
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Default Re: 08 Sti G-Sensor Data extraction?

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Not unless they have changed it, BUT check out the threads on nasioc about the development of the spiider dccd controller. there's all sorts of info there about how measurements were taken to develop the device.
Thanks, will do that
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Old 09-04-2008, 02:11 PM   #5
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Default Re: 08 Sti G-Sensor Data extraction?

Here is the data that is available via the Subaru Select Monitor for the transmission:

Last edited by Digitalfiend; 11-01-2008 at 09:55 PM.
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Old 09-04-2008, 04:04 PM   #6
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Default Re: 08 Sti G-Sensor Data extraction?

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Here is the data that is available via the Subaru Select Monitor for the transmission:
wow. pretty cool. Hadn't gotten around to reading those diagnostic sections of the manual yet. This could be some really useful information if someone can get the communication protocol sorted out. I assume Cobb/other ECU tuners have already done this, but aren't sharing?

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Old 09-04-2008, 04:41 PM   #7
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Default Re: 08 Sti G-Sensor Data extraction?

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wow. pretty cool. Hadn't gotten around to reading those diagnostic sections of the manual yet. This could be some really useful information if someone can get the communication protocol sorted out. I assume Cobb/other ECU tuners have already done this, but aren't sharing?

Frank
I get the impression that this information comes from the DCCD control module and is queried via the SSM protocol. Cobb probably hasn't even looked at this. I wonder what information is available from the VDC module.
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Old 09-04-2008, 05:24 PM   #8
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Default Re: 08 Sti G-Sensor Data extraction?

I got Dynolicous for my Ipod Touch... I can do the G-sensor stuff there
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Old 09-04-2008, 08:47 PM   #9
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Default Re: 08 Sti G-Sensor Data extraction?

Plus, Whiteline is working on their own VDC computer, which they're calling the "Black Box". I would assume they're decoding subaru's bus protocol as well.

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Old 09-05-2008, 08:03 AM   #10
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Default Re: 08 Sti G-Sensor Data extraction?

Out of all the things I miss about Audi's I miss the Vag-com the most. why doesn't one of after market gugru's do this. This makes the AP look like a toy.
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Old 09-05-2008, 12:02 PM   #11
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Default Re: 08 Sti G-Sensor Data extraction?

No label's on which wires are data, nor the protocol...

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Old 09-05-2008, 12:23 PM   #12
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Default Re: 08 Sti G-Sensor Data extraction?

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No label's on which wires are data, nor the protocol...
looking at that wiring diagram, I don't see a phyical bus?? I thought the point of CAN bus is that all the cars "higher electronics" would be integrated onto a bus? The sensor appears to be directly wired to the DCCD. Is CAN just a protocol and the DCCD takes the info from the sensor and passes it through to a bus that is only shared with it (the DCCD), the OBD-II connector and the engine ECU?

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Old 09-05-2008, 12:37 PM   #13
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Default Re: 08 Sti G-Sensor Data extraction?

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Originally Posted by caveguru View Post
looking at that wiring diagram, I don't see a phyical bus?? I thought the point of CAN bus is that all the cars "higher electronics" would be integrated onto a bus? The sensor appears to be directly wired to the DCCD. Is CAN just a protocol and the DCCD takes the info from the sensor and passes it through to a bus that is only shared with it (the DCCD), the OBD-II connector and the engine ECU?

Frank
The CAN bus is between the various module's as far as I know.

While this is simplified as it is for the 08 WRX VDC system -- you can see the G-sensor feeds into the VDC control module as well

The STI system, while probably more complicated because of user controlled CD may be similar.


Last edited by method; 09-05-2008 at 12:44 PM.
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Old 09-06-2008, 06:05 PM   #14
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Default Re: 08 Sti G-Sensor Data extraction?

So that is the bus, almost looks like one if that is supposed to be shielded? I don't see shield terminations, etc. I reference Bus theory to 1553 though so it might be different. Sometimes very basic W.D's are the most confusing ones LOL. Whats with the motor?
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Old 09-07-2008, 05:03 AM   #15
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Default Re: 08 Sti G-Sensor Data extraction?

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So that is the bus, almost looks like one if that is supposed to be shielded? I don't see shield terminations, etc. I reference Bus theory to 1553 though so it might be different. Sometimes very basic W.D's are the most confusing ones LOL. Whats with the motor?
maybe the CD lock control motor? Need to see the VDC-01 and VDC-02 wiring pages...

I'm still wondering- if the WRX VDC sensors are on the bus network, why isn't the G/yaw sensor on the STI? Method, was your image from an '07 manual? I'll have to check my manual...

Frank


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