ANDY3208
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« on: March 27, 2017, 10:10:56 AM »
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Hello,
I've been struggling to find the reason for the LTFT function to remain inactive. I have an 02 TT 225 AMU that I swapped an 8N0906018CB box into with the Unitronic swap harness [I know i took the easy way out]. Naturally this is coupled with a new Bosch wideband sensor.
Originally in the tuning process, I didn't notice this function not working. Since then, to troubleshoot this I flashed the original bin back to the ECU. Its an original file and the car has deletes (Rear O2 unplugged, SAP, and no VVT or EGT because of the swap) hence the fault codes are P1118,P1531,P1453,P1114. Found the LTFT function to not activate under these conditions.
Prior to flashing back to stock, I was running a file with just the deletes. As LTFT was not working on either the original or the "tuned" version, I am wondering if anyone has any ideas as to why I can't get this to work.
I appreciate any insite on this issue!
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« Last Edit: April 17, 2017, 07:34:21 PM by ANDY3208 »
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aef
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« Reply #1 on: March 28, 2017, 12:19:59 AM »
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have you used eskonf or just the errorclasses for the pcodes/dtc
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ANDY3208
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« Reply #2 on: March 28, 2017, 01:33:31 PM »
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ESKONF. The wiki page was used to code out the emission DTC's.
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KasperH
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« Reply #3 on: March 28, 2017, 02:40:33 PM »
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Just removing the DTCs isn't going to make it work right. You're just removing the permission for the ECU to tell you that there is a problem. The problem persists, you just don't know it. ESKONF tells the ECU if the corresponding option is installed or not  |
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ANDY3208
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« Reply #4 on: March 28, 2017, 05:42:32 PM »
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Stored DTC's are causing the function to remain inactive? I'd like to go a step further and ask if one or all three (VVT, o2, and EGT) have an effect on this function directly?
Please bear in mind that I've tried a couple files that had these functions coded out to the extent that I am currently aware of. Past just modifying ESKONF. There was not much information on defeating VVT directly however. KFNW and KFNWWL I originally left undisturbed when I only changed ESKONF.
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« Last Edit: April 08, 2017, 05:03:33 PM by ANDY3208 »
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ANDY3208
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« Reply #5 on: March 28, 2017, 05:49:57 PM »
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Ultimately, I asked this question because I had a couple individuals that I asked help with claim that on an original file, and these sensors unplugged, LTFT would not be effected. Thats why I went back to a stock file for testing. If the methods on the wiki page are not completely conclusive on performing these deletes on this ecu, then I imagine that I'll need to do more digging into what is involved in properly deleting those guys. Any help would be appreciated  haha |
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prj
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« Reply #6 on: March 29, 2017, 12:13:16 AM »
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Too much talk.
Did you zero any CL**** ID's? Fault classes?
If yes - that's your problem. Revert them to stock and code things out properly.
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ANDY3208
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« Reply #7 on: March 29, 2017, 10:56:11 AM »
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Example of CL id please. I have not deleted any pcodes. As stated, used the procedure on S4tuning wiki to delete B2 sensor.
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prj
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« Reply #8 on: March 30, 2017, 12:05:59 AM »
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CLAHSH - Error Class: Bank 1 post cat O2 sensor heater
CLAHSH2 - Error Class: Bank 2 post cat O2 sensor heater
CLAHSHE - Error Class: Bank 1 post cat O2 sensor heater amplifier
CLAHSHE2 - Error Class: Bank 2 post cat O2 sensor heater amplifier
CLALSH (0x10717) - Error Class: Lambda Probe post Kat Bank 1: set to 0
CLALSH2 (0x10718) - Error Class: Lambda Probe Post Kat Bank 2: set to 0[63]
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ANDY3208
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« Reply #9 on: April 03, 2017, 09:03:21 PM »
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I appreciate that! Revisited a few threads and grabbed some elements I previously overlooked. Currently, have LTFT working. As for rediness, everything but the "Oxygen Sensors" block passed.
For completeness sake, here is what I've altered/verified to perform the deletes so far (VVT, SAI, rear 02, and EGT):
VVT:
CDNWS = 0
KFNWSE @ 18's
ESKONF, Byte 6 = 3C => 3F
SAI:
MSLUB @ 0's
MSLBAS = 0
O2:
CDKAT = 0 (Original)
CWDLSAHK = 0 (Originally 9)
CDHSH = 0 (Original)
CDHSHE = 0 (Original)
CDLATV = 0 (Originally 1)
CDLASH = 0 (Originally 1)
CDLSH = 0 (Originally 1)
CLRSHK = 11 (Originally 10)
CWKONLS = 1 (Originally 3)
CLRSKA = 0 (Originally 1)
FKHABMN = 0
ESKONF, Byte 3 = 30 => F0
EGT:
CDATR = 0
CDATS = 0
CATR = 0
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« Last Edit: April 17, 2017, 04:58:02 PM by ANDY3208 »
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sonique
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« Reply #10 on: April 04, 2017, 04:58:25 AM »
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sai need eskonf and cdsls
not correct sai off kill ltft
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ANDY3208
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« Reply #11 on: April 04, 2017, 12:23:24 PM »
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I did not remove the relays for the SAI, why would I need to modify ESKONF any further? Also, it's shown as passed.
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ANDY3208
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« Reply #12 on: April 08, 2017, 04:43:26 PM »
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I've tried every iteration of CLRSHK that was advisable on the forum and still cant set o2 rediness. Anyone see issues with the changes above?
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ANDY3208
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« Reply #13 on: April 15, 2017, 06:37:49 PM »
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CDLSV and CDHSV did the trick. Every test runs and completes now!
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prj
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« Reply #14 on: April 16, 2017, 12:50:42 PM »
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Except you turned off front O2 diagnosis. So if your front O2 goes bad, ECU will not detect it and your engine will go kaboom.
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