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Re: Mode $0a on 7730



David Cooley wrote:
> 
> At 01:15 AM 7/17/00, you wrote:
> >STILL trying to figure out this *&^$ 7730 and wondering if my interface
> >isn't at fault.
> >
> >Here's the Q:  Sending $F4 $57 $0A should put the ECM into Mode $0A (aka
> >Mode 10), which erases any malfunction codes, right?
> >
> >Here's the background:  It looks like I can watch serial data, but I
> >can't transmit to the bus.  I intentionally disconnected the MAP sensor
> >to generated a code 34.  I ran across the Mode 10 stuff on ECMGUY's page
> >beforehand, and tried it using PROBE with a modified request.  I also
> >loaded ALDLMON, and while it wouldn't do anything much, I did ask it to
> ><E>rase Malfunction codes.  It SAID it did, but I confirmed that both
> >PROBE and ALDLMON did not erase the codes.  I did so by jumpering A & B
> >and watching the blinks.
> 
> You have to add the checksum.  $F4 $57 $0A $56 (I think the checksum is
> $56... been a while)


Sorry for the neglect.  I personally didn't add the checksum, but the
program itself (PROBE) did.   Aside from that, the rest looks OK? 
Another thing I forgot to add is that, I've seen F4 57 OA and F4 56 0A,
depending on the source.  BUT, I did try both, with the appropriate
checksum, and neither cleared the malfunction codes.

========================================================================
D. Barry Stubbs                                    http://surf.to/z24man
(912) 745-9429                                     AOL IM: thez24man
z24man@earthlink.net          BNet Member #828     ICQ #5409648
#101DSP MidGa Region SoloII   94 Q4 5spd Aqua Z26  88 2.8 5Spd White Z24
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