[Diy_efi] ESC needed without knock sensor?

[Greg Wolfe]

Thanks for the reply.  No 43 error code - its been
disabled in the program.  I know how the ESC is
supposed to work, it's just not clear if it provides
some sort of feedback without the sensor being
present.

I'm may try the other list.  Thanks.

--- steve ravet <sravet at arm.com> wrote:
> Greg Wolfe wrote:
> > Project: GM 4.3L TBI install onto Toyota I-6.  ECM
> > 747, HEI ignition module used with Toy dist.
> > 
> > I'm not using a knock sensor.  I also don't have
> an
> > ESC module connected.  Without the ESC module
> > connected is there some circuit that is now
> incomplete
> > that the ECM is not controlling timing? Do I need
> an
> > ESC without a knock sensor.
> 
> Do you have trouble codes?  Have you read in the
> archives about ESC and
> how it works?  You should have an ESC module to make
> sure the ESC line
> is driven to "no knock" (+12 or +5).  It may be
> pulled up inside the ECM
> but it's smart to make sure.  You can still
> potentially get a code 43 if
> you don't have a functional knock sensor.
> 
> This would be better asked on the gmecm list.
> 
> --steve
> 
> 
> -- 
> Steve Ravet
> steve.ravet at arm.com
> ARM,Inc.
> www.arm.com
> 
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> Diy_efi mailing list
> Diy_efi at diy-efi.org
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