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Vida CEM swapping

A mid-size luxury crossover SUV, the Volvo XC90 made its debut in 2002 at the Detroit Motor Show. Recognized for its safety, practicality, and comfort, the XC90 is a popular vehicle around the world. The XC90 proved to be very popular, and very good for Volvo's sales numbers, since its introduction in model year 2003 (North America). P2 platform.
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jeffbolem
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Re: Vida CEM swapping

Post by jeffbolem »

Hey y'all, so I just read the flash off of my spare cem
IMG_6140.jpg
IMG_6140.jpg (1.06 MiB) Viewed 561 times
I got data off of the flash memory in hexadecimal, now I don't really know where to go from here. Do I need the entirety of the bin in order to crack the pin, or do I just need the security block, which in Luke's code as "read security block 4000-7FFF" ? I was doing some research on the thread and it seems like I may have to upload the entirety of the bin to D5T5 in order to use the pin with VDash. I am eventually going to change my car's CEM from a bin for an automatic to a manual.

Im really new to this so I appreciate how helpful everyone has been so far!

(had to jury-rig the ground wire, I didn't have enough magnetic arms for it lmao)
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rkam
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Post by rkam »

Look at 0x4000 or 0x6000.
There should be 6 bytes pretty visible.
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dikidera
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Post by dikidera »

I tried to find older posts, we were talking about Dynamically Defined Records e.g AA command, however I had no luck browsing through my old posts to find the info.

Does anyone have information on how exactly they are populated/requested?

7A AA 20 <PARAM ID> ?
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rkam
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Post by rkam »

AA 00 - Clear the list of all identifiers

Add an entry to the list by address or identifier.

AA 50 00 EE 10 16 - Append Record Address with length byte.
(Address 00EE10, 16 bytes)

or

AA 20 11 22 - Append Record Identifier
(Identifier 1122)


A6 F0 00 01 - Read first record 1 time.
Result 16 bytes from address 00EE10

04 Fast rate (full speed)
03 medium rate (10/s)
02 slow rate (1/s)
01 Send record once
00 stop sending
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oscilloscope
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Post by oscilloscope »

i did have access too some cars but that fell apart so i have had to resort to make my own...

I have eventually sourced some test looms & used some existing ecu sets to follow the understanding of how the synchronization process works on the various versions of ecu and cem combinations.

so I have the following :-
sid807 & the P1 cem with should have the 1L15Y (MY around 2010-12) with supporting wiring loom to cover earlier sid803...
sid807 & the LEAR SPC560B64 ( i think that's the later p3 :?: maybe?? ) (MY around 2012-2014)


I plan to cut down the wiring harness's to the bare minimum for it all to work for what i need as currently its a bloody nightmare powering so much loom and manoeuvring all of the loom and modules as a whole ( its so bloody heavy)

so.... the million pound question is , what is the best way to do the capture , directly too the cem or ecu's or both? or via can bus? , i plan to get DiCE & a laptop , i had toyed with the idea of getting a Genuine DiCE , there not overall expensive these days.

I have a logic analyser recommended from VTL ( thankyou) not played with just yet.... but plan too

thoughts , idea's etc!
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dikidera
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Post by dikidera »

rkam wrote: ↑15 Jul 2023, 13:45 AA 00 - Clear the list of all identifiers

Add an entry to the list by address or identifier.

AA 50 00 EE 10 16 - Append Record Address with length byte.
(Address 00EE10, 16 bytes)

or

AA 20 11 22 - Append Record Identifier
(Identifier 1122)


A6 F0 00 01 - Read first record 1 time.
Result 16 bytes from address 00EE10

04 Fast rate (full speed)
03 medium rate (10/s)
02 slow rate (1/s)
01 Send record once
00 stop sending
Thank you once more rkam.
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dikidera
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Post by dikidera »

Took a bit of digging, but I grabbed the nearest ETM test I could find in the VIDA db.

At first it's not clear what is happening and still much is unclear to me

Code: Select all

			<node class="Components.RunScript" id="nev12022057n2-nev12926629n1" nodeid="ETM_test2" x="175" y="844">
				<property class="String" id="nev12022057n2-nev12926630n1" name="Result" type="Out" value="" visible="1" />
				<extension id="nev12022057n2-nev12926631n1">
					<xml id="nev12022057n2-nev12174186n1">
						<ref id="nev12022057n2-nev12174080n1">
							<arc role="urn:x-nevis:profile:0b00c8af80206495 urn:x-nevis:profile:0b00c8af802064d5 urn:x-nevis:profile:0b00c8af80206405 urn:x-nevis:profile:0b00c8af8020641a urn:x-nevis:profile:0b00c8af8020640a urn:x-nevis:profile:0b00c8af802064d1 urn:x-nevis:profile:0b00c8af802064a6 urn:x-nevis:profile:0b00c8af8020651f urn:x-nevis:profile:0b00c8af8020653a urn:x-nevis:profile:0b00c8af80206541 urn:x-nevis:profile:0b00c8af8020640d urn:x-nevis:profile:0b00c8af802063f1 urn:x-nevis:profile:0b00c8af8020644a urn:x-nevis:profile:0b00c8af80206506 urn:x-nevis:profile:0b00c8af802064b6 urn:x-nevis:profile:0b00c8af80206497 urn:x-nevis:profile:0b00c8af80206483 urn:x-nevis:profile:0b00c8af8020657b urn:x-nevis:profile:0b00c8af80206428 urn:x-nevis:profile:0b00c8af8020642b urn:x-nevis:profile:0b00c8af8020644e urn:x-nevis:profile:0b00c8af80206456 urn:x-nevis:profile:0b00c8af802064a0 urn:x-nevis:profile:0b00c8af802064ac urn:x-nevis:profile:0b00c8af80206512 urn:x-nevis:profile:0b00c8af802064e2 urn:x-nevis:profile:0b00c8af80206411 urn:x-nevis:profile:0b00c8af80206425 urn:x-nevis:profile:0b00c8af8020650a urn:x-nevis:profile:0b00c8af8020656d urn:x-nevis:profile:0b00c8af8020648f urn:x-nevis:profile:0b00c8af802068af urn:x-nevis:profile:0b00c8af802068ba urn:x-nevis:profile:0b00c8af802068c5 urn:x-nevis:profile:0b00c8af802068c8 urn:x-nevis:profile:0b00c8af80206925 urn:x-nevis:profile:0b00c8af8020692d urn:x-nevis:profile:0b00c8af80206922 urn:x-nevis:profile:0b00c8af80206936 urn:x-nevis:profile:0b00c8af802068eb urn:x-nevis:profile:0b00c8af80206a5e urn:x-nevis:profile:0b00c8af80206a6a urn:x-nevis:profile:0b00c8af802068e7 urn:x-nevis:profile:0b00c8af802068b5 urn:x-nevis:profile:0b00c8af802068ad urn:x-nevis:profile:0b00c8af80206a5b urn:x-nevis:profile:0b00c8af80206a5d urn:x-nevis:profile:0b00c8af802069c3 urn:x-nevis:profile:0b00c8af802069c6 urn:x-nevis:profile:0b00c8af815cadfb urn:x-nevis:profile:0b00c8af815cae00 urn:x-nevis:profile:0b00c8af824a1d82 urn:x-nevis:profile:0b00c8af82e3b035 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urn:x-nevis:profile:0b00c8af80206959 urn:x-nevis:profile:0b00c8af802068c6 urn:x-nevis:profile:0b00c8af802068d6 urn:x-nevis:profile:0b00c8af802068bb urn:x-nevis:profile:0b00c8af802068d7 urn:x-nevis:profile:0b00c8af802068c1 urn:x-nevis:profile:0b00c8af8020694b urn:x-nevis:profile:0b00c8af8020694c urn:x-nevis:profile:0b00c8af80206948 urn:x-nevis:profile:0b00c8af802068ed urn:x-nevis:profile:0b00c8af80206934 urn:x-nevis:profile:0b00c8af80206a64 urn:x-nevis:profile:0b00c8af80206a63 urn:x-nevis:profile:0b00c8af80206a59 urn:x-nevis:profile:0b00c8af802068ee urn:x-nevis:profile:0b00c8af80206941 urn:x-nevis:profile:0b00c8af80206944 urn:x-nevis:profile:0b00c8af80206952 urn:x-nevis:profile:0b00c8af80206955 urn:x-nevis:profile:0b00c8af802068b8 urn:x-nevis:profile:0b00c8af802068b1 urn:x-nevis:profile:0b00c8af80206a56 urn:x-nevis:profile:0b00c8af80206a69 urn:x-nevis:profile:0b00c8af80206a65 urn:x-nevis:profile:0b00c8af80206a57 urn:x-nevis:profile:0b00c8af815cade9 urn:x-nevis:profile:0b00c8af815cadef 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urn:x-nevis:profile:0b00c8af802068ef urn:x-nevis:profile:0b00c8af80206926 urn:x-nevis:profile:0b00c8af8020693e urn:x-nevis:profile:0b00c8af80206932 urn:x-nevis:profile:0b00c8af8020694d urn:x-nevis:profile:0b00c8af80206a5a urn:x-nevis:profile:0b00c8af80206a66 urn:x-nevis:profile:0b00c8af802068c3 urn:x-nevis:profile:0b00c8af802068dc urn:x-nevis:profile:0b00c8af802068df urn:x-nevis:profile:0b00c8af802068be urn:x-nevis:profile:0b00c8af80206a60 urn:x-nevis:profile:0b00c8af80206a58 urn:x-nevis:profile:0b00c8af802069c0 urn:x-nevis:profile:0b00c8af802069c5 urn:x-nevis:profile:0b00c8af813ce9d0 urn:x-nevis:profile:0b00c8af813ce9d1 urn:x-nevis:profile:0b00c8af8247f3f0 urn:x-nevis:profile:0b00c8af82e4819c urn:x-nevis:profile:0b00c8af83affc43 urn:x-nevis:profile:0b00c8af8020685c urn:x-nevis:profile:0b00c8af80206873 urn:x-nevis:profile:0b00c8af80206887 urn:x-nevis:profile:0b00c8af802068b3 urn:x-nevis:profile:0b00c8af802068cd urn:x-nevis:profile:0b00c8af802068e1 urn:x-nevis:profile:0b00c8af802068ae" nevis:href="urn:x-nevis:xref:0800c8af83721d3c:0900c8af840ac4c4:[b]0900c8af83721d3d[/b]#nev12005705n1" xlink:title="ETM test 2" xlink:from="L0" xlink:to="L1" xlink:type="arc" />
						</ref>
					</xml>
				</extension>
			</node>
The bolded part references the actual script to be executed that performs the Throttle control(this is some random ETM not necessarily Magnetti).

Searching for the bolded script yields another script that contains various other nodes, which are the actual bits that control the car

Code: Select all

<node class="Components.VehComm" id="nev12005915n1-nev15906267n1" nodeid="ActivateThrottle" x="1020" y="1237">
<property class="String" id="nev12005915n1-nev15906268n1" name="Mode" type="Internal" value="EcuType" visible="1" />
<property class="Int" id="nev12005915n1-nev15906269n1" name="EcuType" type="In" value="251101" visible="0" />
<property class="Int" id="nev12005915n1-nev15906270n1" name="ServiceId" type="In" value="0" visible="0" />
				<property class="String" id="nev12005915n1-nev15906271n1" name="EcuName" type="Out" value="" visible="1" />
				<property class="Response" id="nev12005915n1-nev15906272n1" name="Result" type="Out" value="" visible="1" />
				<property class="String" id="nev12005915n1-nev15906273n1" name="Data" type="In" value="" visible="1" />
				<extension id="nev12005915n1-nev15906274n1">
					<insertparam id="nev12005915n1-nev12021871n1" name="Data" />
				</extension>
			</node>

Code: Select all

			<node class="Components.Constant" id="nev12005915n1-nev15906231n1" nodeid="BA" x="247" y="1124">
				<property class="String" id="nev12005915n1-nev15906232n1" name="Text" type="Out" value="BA04057E" visible="1" />
				<extension id="nev12005915n1-nev15906233n1">
					<text id="nev12005915n1-nev12021816n1" type="raw">[b]BA04057E[/b](BA is likely write data block by address)</text>
				</extension>
			</node>
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oscilloscope
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Post by oscilloscope »

dikidera wrote: ↑16 Jul 2023, 11:37 Took a bit of digging, but I grabbed the nearest ETM test I could find in the VIDA db.

At first it's not clear what is happening and still much is unclear to me

Code: Select all

			<node class="Components.RunScript" id="nev12022057n2-nev12926629n1" nodeid="ETM_test2" x="175" y="844">
				<property class="String" id="nev12022057n2-nev12926630n1" name="Result" type="Out" value="" visible="1" />
				<extension id="nev12022057n2-nev12926631n1">
					<xml id="nev12022057n2-nev12174186n1">
						<ref id="nev12022057n2-nev12174080n1">
							<arc role="urn:x-nevis:profile:0b00c8af80206495 urn:x-nevis:profile:0b00c8af802064d5 urn:x-nevis:profile:0b00c8af80206405 urn:x-nevis:profile:0b00c8af8020641a urn:x-nevis:profile:0b00c8af8020640a urn:x-nevis:profile:0b00c8af802064d1 urn:x-nevis:profile:0b00c8af802064a6 urn:x-nevis:profile:0b00c8af8020651f urn:x-nevis:profile:0b00c8af8020653a urn:x-nevis:profile:0b00c8af80206541 urn:x-nevis:profile:0b00c8af8020640d urn:x-nevis:profile:0b00c8af802063f1 urn:x-nevis:profile:0b00c8af8020644a urn:x-nevis:profile:0b00c8af80206506 urn:x-nevis:profile:0b00c8af802064b6 urn:x-nevis:profile:0b00c8af80206497 urn:x-nevis:profile:0b00c8af80206483 urn:x-nevis:profile:0b00c8af8020657b urn:x-nevis:profile:0b00c8af80206428 urn:x-nevis:profile:0b00c8af8020642b urn:x-nevis:profile:0b00c8af8020644e urn:x-nevis:profile:0b00c8af80206456 urn:x-nevis:profile:0b00c8af802064a0 urn:x-nevis:profile:0b00c8af802064ac urn:x-nevis:profile:0b00c8af80206512 urn:x-nevis:profile:0b00c8af802064e2 urn:x-nevis:profile:0b00c8af80206411 urn:x-nevis:profile:0b00c8af80206425 urn:x-nevis:profile:0b00c8af8020650a urn:x-nevis:profile:0b00c8af8020656d urn:x-nevis:profile:0b00c8af8020648f urn:x-nevis:profile:0b00c8af802068af urn:x-nevis:profile:0b00c8af802068ba urn:x-nevis:profile:0b00c8af802068c5 urn:x-nevis:profile:0b00c8af802068c8 urn:x-nevis:profile:0b00c8af80206925 urn:x-nevis:profile:0b00c8af8020692d urn:x-nevis:profile:0b00c8af80206922 urn:x-nevis:profile:0b00c8af80206936 urn:x-nevis:profile:0b00c8af802068eb urn:x-nevis:profile:0b00c8af80206a5e urn:x-nevis:profile:0b00c8af80206a6a urn:x-nevis:profile:0b00c8af802068e7 urn:x-nevis:profile:0b00c8af802068b5 urn:x-nevis:profile:0b00c8af802068ad urn:x-nevis:profile:0b00c8af80206a5b urn:x-nevis:profile:0b00c8af80206a5d urn:x-nevis:profile:0b00c8af802069c3 urn:x-nevis:profile:0b00c8af802069c6 urn:x-nevis:profile:0b00c8af815cadfb urn:x-nevis:profile:0b00c8af815cae00 urn:x-nevis:profile:0b00c8af824a1d82 urn:x-nevis:profile:0b00c8af82e3b035 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nevis:href="urn:x-nevis:xref:0800c8af83721d3c:0900c8af840ac4c4:[b]0900c8af83721d3d[/b]#nev12005705n1" xlink:title="ETM test 2" xlink:from="L0" xlink:to="L1" xlink:type="arc" />
						</ref>
					</xml>
				</extension>
			</node>
The bolded part references the actual script to be executed that performs the Throttle control(this is some random ETM not necessarily Magnetti).

Searching for the bolded script yields another script that contains various other nodes, which are the actual bits that control the car

Code: Select all

<node class="Components.VehComm" id="nev12005915n1-nev15906267n1" nodeid="ActivateThrottle" x="1020" y="1237">
<property class="String" id="nev12005915n1-nev15906268n1" name="Mode" type="Internal" value="EcuType" visible="1" />
<property class="Int" id="nev12005915n1-nev15906269n1" name="EcuType" type="In" value="251101" visible="0" />
<property class="Int" id="nev12005915n1-nev15906270n1" name="ServiceId" type="In" value="0" visible="0" />
				<property class="String" id="nev12005915n1-nev15906271n1" name="EcuName" type="Out" value="" visible="1" />
				<property class="Response" id="nev12005915n1-nev15906272n1" name="Result" type="Out" value="" visible="1" />
				<property class="String" id="nev12005915n1-nev15906273n1" name="Data" type="In" value="" visible="1" />
				<extension id="nev12005915n1-nev15906274n1">
					<insertparam id="nev12005915n1-nev12021871n1" name="Data" />
				</extension>
			</node>

Code: Select all

			<node class="Components.Constant" id="nev12005915n1-nev15906231n1" nodeid="BA" x="247" y="1124">
				<property class="String" id="nev12005915n1-nev15906232n1" name="Text" type="Out" value="BA04057E" visible="1" />
				<extension id="nev12005915n1-nev15906233n1">
					<text id="nev12005915n1-nev12021816n1" type="raw">[b]BA04057E[/b](BA is likely write data block by address)</text>
				</extension>
			</node>
What are you using to grab this data ? Are you using DiCE and a tool in-between while accessing commands too see what is captured ? If so what tool are you using ?
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rkam
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Post by rkam »

These are .xml scripts stored in Vida database files
They are part of how Vida links information, text, language, vehicle communication ... together for the user and diagnose tools.
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rkam
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Post by rkam »

xml-examples.zip
(11.84 KiB) Downloaded 96 times
Another example.
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