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Title: Enable DTC but disable CEL - 03 vs 01 ? Post by: elRey on May 04, 2014, 10:01:09 AM Hello,
I want to maintain DTC but prevent it from throw CEL/MIL. Is it has simple as only have the first bit set and leave second bit zero in faultclass? Specfically, I want misfires (all, even per cyl) DTCs to be enabled, but don't want them turning on CEL. Thanks, Rey Title: Re: Enable DTC but disable CEL - 03 vs 01 ? Post by: ddillenger on May 04, 2014, 10:17:56 AM I'm not sure you can do that. The misfires have a different routine entirely for flashing the CEL if the threshold is reached. I don't think error classing will be sufficient.
Title: Re: Enable DTC but disable CEL - 03 vs 01 ? Post by: elRey on May 04, 2014, 11:42:10 AM I don't mind the flashing CEL when actively misfiring. It's the presistent CEL due to stored misfire DTCs I'm trying to address.
Title: Re: Enable DTC but disable CEL - 03 vs 01 ? Post by: ddillenger on May 04, 2014, 12:02:28 PM Can I ask why you're willing to live with misfires and just hide the symptoms? Deka's at idle?
Title: Re: Enable DTC but disable CEL - 03 vs 01 ? Post by: elRey on May 04, 2014, 02:10:05 PM Can I ask why you're willing to live with misfires and just hide the symptoms? Deka's at idle? Nail on the head. More specifically - right off idle. torque reserve handled idle, but any throttle (B_ll = false) and torque reserve is turned off. e.g. where KFMRESNL does not apply. Want to avoid a high temin to acheive 14.7 Also, dealing with a particularly bad set of 870s that vary quite a bit from one to the other. Title: Re: Enable DTC but disable CEL - 03 vs 01 ? Post by: ddillenger on May 04, 2014, 02:17:50 PM Any reason not to just modify NMIALU/MIDLU to be right above idle?
Just curious :P |