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Author Topic: Emissions delete and setting actual readiness  (Read 158694 times)
DJGonzo
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« on: May 13, 2011, 08:21:41 PM »

These forums have been moving fast lately, and I like it.

Let's start a thread on how to set actual readiness on emission items, setting them as unsupported and also forcing readiness.

I will share a list of maps I use for setting them as unsupported:
SAI
CDSLS - Eurobyte (self explanatory)
CLASLVE - Plug
CLASLPE - Pump plug

EVAP

CDTES - Eurobyte - LDP Diagnosis
CDLDP - Eurobyte - EVAP diagnosis
CLATEVE - EVAP plug
CLALDPE - LDP plug

This is off my notes and the German to English translation I could get.

From the S4 wiki:
Rear O2 Sensors

    CDKAT - Cat diagnosis in OBDII-Mode. Set to zero to disable rear cat DTC

If you want to remove your rear O2s entirely, also set these to zero:

    CDHSH - Post cat O2 heater diagnosis
    CDHSHE - Post cat O2 heater amplifier diagnosis
    CDLSH - Post cat O2 sensor diagnosis
    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

You may also have to change these to disable rear catalyst lambda control (untested)

    CLRHK - Code word for Lambda - Control post cat on/off: set to odd? (original value 72)
    CLRHKA - Code word for Lambda - Control post cat: set to 1? (original value 0)

EGT

If you want to remove your EGT sensors:

    CDATR - Configuration byte diagnosis exhaust gas temperature regulation
    CDATS - Configuration byte diagnosis exhaust gas temperature sensor
    CLAATR - Error class exhaust gas temperature regulation
    CLAATR2 - Error class exhaust gas temperature regulation bank 2
    CLAATS - Error class exhaust gas temperature sensor
    CLAATS2 - Error class exhaust gas temperature sensor bank 2

---------------------------------------------------------------------------------------------

As far as setting readiness, I have a few ideas. There must be lambda maps for SAI. Maybe Tony or someone else that's more knowledgeable than me can pitch in.

I will update my posts with any info you guys share.

Thanks Smiley
« Last Edit: May 14, 2011, 07:20:58 AM by DJGonzo » Logged
nehalem
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« Reply #1 on: June 22, 2011, 11:45:36 PM »

great thread.  we should definitely all coordinate until this is certain information!

let me ask you something about oxygen sensor(s) readiness.

from the 10 codes in the emissions dtc's, i have every one set to zero except two.
currently i have CDHSHE set to 1 and CLRHK set to 72.

a few questions:
a)  if i set CDHSHE to 0 would my readiness come up OK for the oxygen sensor(s)?
i'm not sure why CDHSHE is set to 1 when all of the other values are set to 0, but it currently is--- i should probably just diagnose this myself, but just thought it safest to ask first.
b)  do we know what to do with CLRHK?  a value of 72 seems quite strange.  do you suspect we just set it to an odd value, so 73?  thoughts?

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DJGonzo
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« Reply #2 on: June 23, 2011, 10:24:04 AM »

In my experience, to disable anything completely you just set it to 0 ignoring what value it had previously  Wink
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phila_dot
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« Reply #3 on: June 23, 2011, 12:11:09 PM »

In my experience, to disable anything completely you just set it to 0 ignoring what value it had previously  Wink

^^^Not always true.

I will post what I have changed in my file next time I get on the laptop.
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DJGonzo
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« Reply #4 on: June 23, 2011, 05:27:24 PM »

9/10 times  Tongue
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phila_dot
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« Reply #5 on: July 09, 2011, 03:45:34 PM »

VCDS displays "Passed" for all readiness checks. See below for secondary O2 changes in my file.

All set to zero:
CLAHSH
CLAHSH2
CLAHSHE
CLAHSHE2
CLALSH
CLALSH2
CDHSH
CDHSHE
CDKAT
CDLASH
CDLSH
CDLSHV
CWDLSAHK

After flashing these changes, I ran the readiness checks for the O2 sensors per the Ross tech wiki.
http://wiki.ross-tech.com/wiki/index.php/Readiness_-_APB_Engine_Code
« Last Edit: July 10, 2011, 05:56:56 PM by phila_dot » Logged
nehalem
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« Reply #6 on: July 09, 2011, 11:21:55 PM »

wow... OK this is awesome.

in nyet's most recent XDF i'm not finding definitions for:

CLALSH
CLALSH2
CWLSAHK


also not to nit-pick, but straight from that link - did you run all of these:

O2 sensor heater test
Post-cat O2 sensors readiness test
Pre-cat O2 sensors response time test
O2 sensor control test
Post-cat O2 sensor aging test

These 5 tests?

Cheers!
« Last Edit: July 09, 2011, 11:35:24 PM by nehalem » Logged
phila_dot
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« Reply #7 on: July 10, 2011, 05:25:37 PM »

CWDLSAHK
Code word CWDLSAHK for probe aging after KAT
0x18663

CLALSH
Error Class: Lambda Probe post Kat Bank 1
0x10717

CLALSH2
Error Class: Lambda Probe Post Kat Bank 2
0x10718

Honestly, some of the parameters listed may be overkill, but I don't have time to play around with it too much.

I'm not really sure which tests I ran, I just started with the first one and clicked through them all. I was trying to check if any were failing. All of the post kat tests (everything coded out)should already display "OK" without running them.
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nehalem
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« Reply #8 on: July 10, 2011, 05:32:21 PM »

i'll send this link to nyet to also add these 3 to his next map-pack...
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phila_dot
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« Reply #9 on: July 10, 2011, 05:33:44 PM »

I was looking into possibly disabling all readiness testing and came across some interesting codewords. I stopped working on it once I had my readiness set, but I am still curious. Has anyone else looked into these?

CWCDCUM
0x1843B
Code word to switch the CDC's on the market
1 = OBDII (NA)
2 = EOBD (EURO)

CWOBD
0x181BE
Codeword for configuration OBD certification has proven
CWOBD in dec:  Certification by:
01                      OBDII-CARB
02                      OBD-EPA
03                      OBDII-CARB + OBD-EPA
04                      OBDI
05                      no OBD requirements
06                      EOBD

CWSCTMDE
0x181BF
Code word to switch off certain scan tool modes / Services (bit = 0 -> OUT)

Scan tool mode codeword actually seemed very promising, but also somewhat dangerous.
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nehalem
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« Reply #10 on: July 10, 2011, 05:41:29 PM »

Wait a sec.  Is it CWLSAHK like in your earlier post

or

CWDLSAHK
Code word CWDLSAHK for probe aging after KAT
0x18663

like in your most recent post?  Are there actually two things?
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phila_dot
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« Reply #11 on: July 10, 2011, 05:59:48 PM »

Wait a sec.  Is it CWLSAHK like in your earlier post

or

CWDLSAHK
Code word CWDLSAHK for probe aging after KAT
0x18663

like in your most recent post?  Are there actually two things?

Fixed. It's CWDLSAHK.
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NOTORIOUS VR
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« Reply #12 on: July 19, 2011, 07:07:06 AM »


I will update my posts with any info you guys share.

Thanks Smiley

All that info was available in the S4 Wiki anyways...
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Gonzo
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« Reply #13 on: August 01, 2011, 02:17:09 PM »


I will update my posts with any info you guys share.

Thanks Smiley

All that info was available in the S4 Wiki anyways...
False. The SAI & EVAP were not there. Also there is some NOP code floating around that disables all the emissions but that's not in the wiki either Cheesy
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nyet
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« Reply #14 on: August 01, 2011, 02:51:09 PM »

Gonzo: thanks for the info btw Smiley

I'll be updating the wiki and xdf with SAI/EVAP information provided time permitting...

Are the NOPs you refer to required for readiness and rear O2 delete?
« Last Edit: August 01, 2011, 02:52:53 PM by nyet » Logged

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Do not PM me technical questions! Please, ask all questions on the forums! Doing so will ensure the next person with the same issue gets the opportunity to learn from your experience.
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