Transporter no comm
- Thread starter scoper
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Oh .... you haven't worked on corsa d 2007-2008...
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right, i dont
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I have seen it happen and can be quite certain it was not messed with.
Two very recent examples are a Porsche 911 DME and a Rolls Royce Phantom Instrument Cluster.
Any BMW with a CAS - leave them with no power (Flat or Disconnected Battery) and they wont start. BMW are aware and there is a DDE / DME Re Alignment procedure in the Diagnostic Machine.
I dont think VAG make or use an EEprom or Microprocessor that others don't.
As you mention, these OPEL / Vauxhalls would lose something. Again the procedure is there to "Reset" the modules given that you have the Security Code.
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So in this vehicle the Gateway is within the Instruments, a sub module ? As in some VAG cars of that era ?
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Short both Can Lines to Earth - Kill the CAN - Then do a scan to see what needs can and what does not to communicate !
Then Short KL - Same again ?
Gain some knowledge of how it Functions - Go to war with it ! - Get in its head so to speak then defeat it and make it work for its fuel !
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Again Short it to Earth and discover what stops other than Communication with VCDS !
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What is the Engine code in this ?
Will help me get the right Diagrams for this.
Will help me get the right Diagrams for this.
Not always true. Even in VAG cars, some modules have inadequate brown-out protection, and things get can get messed up if there's a slow system voltage drop below some reasonably threshold. I believe the danger point for this is somewhere around 6V.
-Uwe-
Love it! good idea about intentionally killing the CAN
BRR , yes the gateway is integrated into the instruments. K-line is direct to DLC but DLC 6+14 only goes to the gateway.
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Shorting 6 & 14 at DLC will not do the trick. Only Diagnostic Can exists there
You can kill the CAN anywhere you like, just be sure it is the right network that you drag down. Engine ECU will do
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Yes, its that old stuff in Transporter T5, embedded gateway.
Brief visit yesterday, scoped the K-Line at the ECU and it is there, can see it respond to diagnostic enquiry. As before scan tool picks up ECU details but nothing else. Killed the K-line with a test light to ground and no comms at all with ECU. So that rules out theory of no-comm codes being K-line not CAN.
As far as I can see that leaves software corruption that I cloned across, so next I will flash an ECU with a stock file and see if that changes anything.
As far as I can see that leaves software corruption that I cloned across, so next I will flash an ECU with a stock file and see if that changes anything.
Fixed it.
Flashed an ECU with it's original stock file, fitted and I had all comms back, extracted the PIN from the original EEPROM dump and then from the stock/donor dump so with both was able to align the ECU to the immo with VCDS. Starts and runs, coding was the same anyway.
I thought this was going to work as I did a file compare with the stock and original internal flash and I could see where there was data in the stock there was 0's in the original. What caused it I do not know but I hope it was a one off!
Stock file on left, original right
Flashed an ECU with it's original stock file, fitted and I had all comms back, extracted the PIN from the original EEPROM dump and then from the stock/donor dump so with both was able to align the ECU to the immo with VCDS. Starts and runs, coding was the same anyway.
I thought this was going to work as I did a file compare with the stock and original internal flash and I could see where there was data in the stock there was 0's in the original. What caused it I do not know but I hope it was a one off!
Stock file on left, original right