[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index] Re:A4 chip
>From: spowers@spdg.COM (Steve Powers) >I should have included diodes in my list of etc., etc... What you're saying >isn't done for automotive electronics is industry standard procedure at >computer mfrs... (e.g. programming in situ w/out powering up the electronics) > >> The problem is that some EEPROMs require +12v to program them. Put that on >> the board and you could end up replacing something else you have destroyed. > >one word - DIODES... (BZZZZZT) Yes Steve, but you either need the diode built into the computer or you need to lift the appropriate pins and put them there. The diodes are not built into the computer because the manufacturers can program the computer through the OBDII interface. If you have the special desoldering tool it is easiest to pull the chip rather than try redesigning the circuit board. Peter Wales President Superchips Inc Chairman Superchips Ltd "Timing is everything" Superchips home page with all the answers http://www.superchips.com
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