Search found 2 matches

by drewloch
2024 Jan 08, 14:46
Forum: GUFX - 89-93 Foxbody ECUs
Topic: 2 Step RPM Limter Acting While Driving, NDS Flag issue?
Replies: 8
Views: 2980

Re: 2 Step RPM Limter Acting While Driving, NDS Flag issue?

Thanks for the quick response.

At this point I am only worried about the NDS position being correctly identified by the tune and not necessarily the correct behavior of the 2-step code. If the auto trans shifter position is not important to the tune, then please let me know.

Here is what I did yesterday:
With the 2-step code in the default setting of patched, I modified the RunningState monitor to display the NDSFLAG.

With the trans in Park or Neutral, the NDS shows as "Drive" with my foot off the gas. If I tap the accelerator it switches to show no text. If I put the trans in Drive then the NDSFLG shows no text.

I believe I then correctly disabled the 2-step code and the NDSFLAG was still showing the same behavior with the same tests.

I am happy to try other tests or send logs if it is helpful. It may be another day or two before I am out there working on it again.
by drewloch
2024 Jan 08, 08:57
Forum: GUFX - 89-93 Foxbody ECUs
Topic: 2 Step RPM Limter Acting While Driving, NDS Flag issue?
Replies: 8
Views: 2980

Re: 2 Step RPM Limter Acting While Driving, NDS Flag issue?

I know this is an older thread, but I am seeing similar behavior with the NDS flag. I too am just getting started and want to ensure all my sensor inputs are operating correctly before progressing further.

I have an A9L computer with a C4 transmission. Only change to configuration so far is to modify TRLOAD = 4 (auto, non-electronic, neutral safety switch).
I am running the latest versions of the configuration (GUFX_230909.xdf, A9L2_231024.bin, DECIPHA_230417.adx)

Using the dash, I am seeing that when the transmission is in park or neutral that the NDS Flag monitoring shows Drive. If I depress the throttle it transitions to neutral. If I shift into Reverse or Drive it also transitions to neutral. The ECU pin is grounded when in park/neutral and open otherwise.

Am I supposed to enable or disable the 2-step code to get the inverted input? When the proper value is applied, will it be reflected correctly in the NDSFLG bitmask in the ADX or will I need to edit the definition and change Display to also invert the "Display on True" and "Display on False"?

Would appreciate any help/guidance, thanks!