Is DPF issue for 2014 CRD fixed now? - Page 75 - Jeep Garage - Jeep Forum

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  #889  
Old 03-03-2015, 04:16 AM
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Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by SNUKE View Post
I don't think 10 mins is sufficient warning for a lot of people. Peak hour travel can be a killer, even of on a freeway, you may still only be doing walking pace if that sometimes.
Can you imagine the fun of going into limp mode in an M5 traffic jam?
Having a visible warning at 65% allows people some good notice and the ability to alter their route if required.
10 minutes of running the regen is plenty.

10 minutes of heating to 600C does clear the filter quite a bit and it doesn't matter what speed. I did one while inching along in traffic a few weeks ago and in just over 10 minutes ( travelled 2.8km) and I stopped the car.
The DPF cleaned from 71% down to 12% in that time.
President Avenue from Gymea to Kirrawee , Harbour Bridge, M5 motorway jam or a Westfield carpark at Christmas shopping time - no difference.


Another one aborted in my driveway after about only 3 minutes and it cleaned from 72% to 55% (delaying the next attempt for 3 more days).

10 Seconds ? that sounds like someone messed up the timebase on the program logic.


Quote:
Originally Posted by Barboots View Post
I'd also program a manual burn into things.
Yes, how about we press the Temp up and temp down controls on the left side for reset the UConnect and press the Temp up and temp down controls on the right side for DPF burn.
Don't forget which is which or you'll lose all your radio presets

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  #890  
Old 03-03-2015, 04:52 AM
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Regarding dongles, if I leave torque connected to it and stop then start my engine it usually causes evic to flash "service shifter " with a chime repeatedly until I quit torque and start app again.
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  #891  
Old 03-03-2015, 06:39 PM
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Re: Is DPF issue for 2014 CRD fixed now?

Or you can just reach down and unplug the dongle and reinsert it, or get one like Benn0 has with a sleep mode in which case you would just have to reach down and push the wake up button.
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  #892  
Old 03-03-2015, 07:04 PM
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Re: Is DPF issue for 2014 CRD fixed now?

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Originally Posted by jeepless View Post
Regarding dongles, if I leave torque connected to it and stop then start my engine it usually causes evic to flash "service shifter " with a chime repeatedly until I quit torque and start app again.
Ok, I haven't tried that. So far I've had torque connected when i turn the car off, but then pull out the dongle when I leave the car. Plug it back in and start the car, but by then the dongle is asleep and needs a wake up.
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  #893  
Old 03-03-2015, 08:51 PM
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Re: Is DPF issue for 2014 CRD fixed now?

Mine has done 14000k never notice a regen had the update at 10k still yet to notice a regen, dealer reckons I must drive it how it is designed!!! Touch wood....


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  #894  
Old 03-04-2015, 02:51 AM
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Re: Is DPF issue for 2014 CRD fixed now?

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Originally Posted by Hutch801 View Post
Mine has done 14000k never notice a regen had the update at 10k still yet to notice a regen, dealer reckons I must drive it how it is designed!!! Touch wood....


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  #895  
Old 03-04-2015, 07:54 AM
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Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Steve1307 View Post
10 minutes of running the regen is plenty.

10 minutes of heating to 600C does clear the filter quite a bit and it doesn't matter what speed. I did one while inching along in traffic a few weeks ago and in just over 10 minutes ( travelled 2.8km) and I stopped the car.
First of all, thanks for sharing the Torque 01 8B PID. I monitored my NA EcoDiesel regen while being able to also monitor the DPF % level for the first time today. Before, all I had were temps.

It took some coaxing to get it into regen (read: driving at highway speeds for >30 minutes), even though the DPF was at 100%. What I found interesting was that for the first 12.5 minutes of regen the DPF value remained pegged at 100%... then it suddenly reported a reduction to 9.4% in 1 second, whereupon the system terminated the regen and the CAT/EGT/DPF Temp PID values all immediately began their descent to normal operating temps.
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  #896  
Old 03-04-2015, 06:22 PM
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Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Roadkill View Post
First of all, thanks for sharing the Torque 01 8B PID. I monitored my NA EcoDiesel regen while being able to also monitor the DPF % level for the first time today. Before, all I had were temps.

It took some coaxing to get it into regen (read: driving at highway speeds for >30 minutes), even though the DPF was at 100%. What I found interesting was that for the first 12.5 minutes of regen the DPF value remained pegged at 100%... then it suddenly reported a reduction to 9.4% in 1 second, whereupon the system terminated the regen and the CAT/EGT/DPF Temp PID values all immediately began their descent to normal operating temps.

The DPF% value displayed is just a calculated value (it's not a direct sensor measurement) so when the regen sequence is running the soot is burning off but the displayed value seemingly is "latched on" i.e. it stays the same as when it was triggered.

When the sequence finishes it goes back to reading the differential pressure sensor and calculating the DPF% with the cleaner filter.
We have the same behaviour in our export model.


Interesting that your NA model actually will read up to 100% in normal use.

I assume you are using the same scaling. The PID value is 0-255 and we are scaling it from 0-100% eq % = C *100 / 255

The ECU program on the NA model is different to the export model we have down here, so I would expect some differences.

We're getting regen at >65% when on the highway.
In slower traffic and shorter trips I seem to have it go at 71-72%.
I don't know for sure when we get the EVIC warning to keep driving but think it might be 80%.


I'll post some more info of the homework i did with various PIDs in your "Ecodiesel specific PID" thread which might be helpful (or might be confusing )
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  #897  
Old 03-04-2015, 07:50 PM
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Quote:
Originally Posted by Steve1307 View Post
I assume you are using the same scaling. The PID value is 0-255 and we are scaling it from 0-100% eq % = C *100 / 255
Yes, I triple-checked that because I was surprised it was so recalictrant about kicking into regen if it was indeed at limit. Furthermore, if it were at the limit then I would have expected a "regen now" warning (there was no indication of a problem in EVIC and nothing in "Stored Messages").

The raw value of byte C was 255... 0xFF, so if it's *not* 100% then the value must be larger than 8 bits.

Thanks for the explanation for the seemingly arbitrary behavior. I would have believed it was misconfigured somehow except the sudden new value reading coincided with the termination of regen temps.

Quote:
I'll post some more info of the homework i did with various PIDs in your "Ecodiesel specific PID" thread which might be helpful
Absolutely, please do. I found your PID spreadsheet after I posted in this thread. If PID 01 7F gets me engine lifetime operating time then you've made my day again. Thanks.
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  #898  
Old 03-04-2015, 10:45 PM
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Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Roadkill View Post
Absolutely, please do. I found your PID spreadsheet after I posted in this thread. If PID 01 7F gets me engine lifetime operating time then you've made my day again. Thanks.

The spreadsheet and the copy of the SAE J1979 parameters is what i was going to post in the other thread after editing a bit. as all my testing is with the AU export car.

I expect you would have some different supported PIDs and maybe a couple of extra available as you seem to have 1more exh temp sensor and all of the SCR gear (DEF fluid).

Check out PIDs 00, 20, 40, 60 and 80 and convert the reading to binary to see which main parameters might give you some data.
I've gray-ed out the ones which I don't have.
.
.
.

PID 01 7F is an engine run time, yes BUT...... it seems that it is since the time last reset of the DTC's or when the ECU was flashed.

The reading i get i estimated to be since the car was last in service in early January and 2500km ago.


Run time - (since last reset?)
Mode 01
PID 7F
units seconds
equation = (B*16777216)+(C*65535)+(D*256)+E
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Old 03-04-2015, 11:04 PM
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Re: Is DPF issue for 2014 CRD fixed now?

Quote:
Originally Posted by Steve1307 View Post
The spreadsheet and the copy of the SAE J1979 parameters is what i was going to post in the other thread after editing a bit. as all my testing is with the AU export car.
Yes, please cross post it. We benighted NA owners are in dire need of more PIDs, and if I posted a link to your spreadsheet in another thread it would just seem tacky of me.

Quote:
PID 01 7F is an engine run time, yes BUT...... it seems that it is since the time last reset of the DTC's or when the ECU was flashed. The reading i get i estimated to be since the car was last in service in early January and 2500km ago. The reading i get i estimated to be since the car was last in service in early January and 2500km ago.
Ah, I was hoping that the 0181 (AECD) one would be the one that got reset, if any. I don't know of a good way to throw an innocuous DTC on a diesel to test this. If it were gasoline, I would just leave the cap unscrewed and invoke an evap code.

Quote:
equation = (B*16777216)+(C*65535)+(D*256)+E
Actually, I'm pretty sure it should be C*65536.

You know, Torque supports bit shifts, so it seems you could easily restate the equation as (B<24)+(C<16)+(D<8)+E
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  #900  
Old 03-04-2015, 11:18 PM
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Re: Is DPF issue for 2014 CRD fixed now?

BTW, since torque can also read individual bits we could conceivably create a custom PID for active vs passive DPF regen mode by extracting those B0/B1 bits from 8B. The only issue would be how to display it... I don't think Torque allows lookup table translation, so it would probably be a 0 through 3 digital display and people would just have to know that 3 is "active regen" mode, 2 is "passive regen" mode, and 0 or 1 is no regen in progress.

I think the PID would be

PID: 018B
Long Name: DPF Regen Mode
Short Name: DPF Mode
Minimum value: 0
Maximum value: 3
Scale Factor: 1x
Unit Type: mode
Equation: ({B:0}<1)+{B:1}
However, I haven't tested this yet. Note that those green things that look like curly braces in the equation are, in fact, curly braces and not parentheses.

Does anyone else feel like entering these custom PIDs is akin to having a GameGenie for their Jeep?
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