1227747 question
rr
RRauscher at nni.com
Mon Aug 7 22:10:50 GMT 2000
A quick look at the timers and such show that closed loop might be
attained as quickly as 5 seconds. Closed loop temp enable ~ 35C.
Of course this varies per bin.
Closed loop timers are at: 0x297 (warm), 0x298 (cold), in seconds
times 2. (divide the value at that loc by 2, for seconds)
Another timer is at: 0x29A, however I'm not sure of the time base.
BobR.
Jeff Kopp wrote:
> I'm helping a friend with a problem on a 1227747 in a 88 C-10. Long story
> short, the ECM goes into closed loop within 5-10 seconds at any temp - cold
> or hot. I don't have much experience with the '747 but I believe there are
> min run times in the prom before closed loop is allowed. Is there something
> that can overide this? What are the times in the '747 code? I know on the
> '165 I'm use to messing with the times usually run around 60 seconds on the
> cold side to about 300 seconds on the hot side. Is this comparable?
>
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