Crank Relearn

[Big ‘G’]

Can crank relearn be done with a script using logger? I have a 4.3 s10 with p01 and am having intermitent missing at 2000 rpm and below but i get no missfire codes. I see posted here to send 6C 10 F1 AE 01 00 00 00 00 08 00 And then monitor pid 12fo. I tried this, i get 6C F1 10 EE 01 E1 as reply, not sure how to interpit the 01 E1 at the end of the message. Also trying to monotor pid 12fo with logger, 12fo isn't listed in the profile but is in patcher. I can add 12f0 to the profile but only as a custom pid and the value does not change from 00. probably not set up corectly, i'm monitoring it as a pid mabey needs to be an adress. any insight would be helpful. thsnks

[geep]

pcmhammer android test version has a option for it but i haven"t tried it yet so it may not work at all you will have to sign up for github to download it. https://github.com/PcmHammer/PcmHammer/ ... kBuild.yml

[antus]

I would call the android version experimental. At this end it is not working well and isn't maintained as pcm hammer is under heavy development. It may work for you but expect a clunky experience. It's not clear if that android version will ever be finished or released. I also don't know if there is any code behind that button at all. If anyone wanted to take a look at a feature like crank re-learn with a view to putting it in pcmlibrary and makeing it available to all user interfaces, that would be welcome.

[kur4o]

sequence is:

Monitor pids fe4b 000c 0005 for condition to start crank relearn.

you need coolant at least 70*C, ac off, brake pedal applied, vehicle in park neutral, dtc cleared, and no dtc set.

The command to initiate relearn is

6C 10 F1 AE 01 00 00 00 00 08 00

response that command was accepted is

6C F1 10 EE 01 E1


When conditions are met accelerate to fuel cutoff around 4000-5000 rpm.

test is considered successful when pid 12f0 changes state from 00 to 40 and than 80

After test is complete, switch off ignition for at least 1 min so new data gets saved to eeprom.

[MPC001]

Quick question @kur4o, do you know if the crank learn PID's are the same for E40, E38, E67 over CAN?

[kur4o]

Quick question @kur4o, do you know if the crank learn PID's are the same for E40, E38, E67 over CAN?

rpm and coolant are definitely the same,

Command that initiate relearn might be different. The status pid is very likely to be the same. However there might be some changes how it is done.

The above sequence is taken from ls1 pcm.


A log how it is done will be needed.

[Big ‘G’]

Had a chance to try relearn again using kur40 guide. I believe i'm not monitoring pid 12f0 correctly, looking at the code 12f0 is a flag, bit 6 = relearn in progress, bit 7 relearn complete. S0 with engine above 80c, at idle, brake on, enter 6c 10 f1 ae 01 00 00 00 00 08 00, do not see any change in pid 12f0. rev engine to fuel cut off, then back to idle still no change in pid 12f0, turn key off for 2 min, read back the bin and compare. there are changes to the 4000 parameter block which is why i'm not sure 12f0 is being monotored corectly.
pid set up as follows

pid 12f0
ubyte

unit expression format bit mapped bit index value value
boolean x x 6 on off
raw x x 6 on off

bitmapped bit index value value
x 6 on off

units format expression
boolean x

[MPC001]

Quick question @kur4o, do you know if the crank learn PID's are the same for E40, E38, E67 over CAN?

rpm and coolant are definitely the same,

Command that initiate relearn might be different. The status pid is very likely to be the same. However there might be some changes how it is done.

The above sequence is taken from ls1 pcm.


A log how it is done will be needed.