Changement ECM

Un soucis qui risque d apparaitre lorque l on change d ECM, programmé au bon VIN, est l apparition d un defaut MIL avec code DTC 1336. Ce serait normal pour 1% des vehicule GM dixi SpareECM
" The CKP requirement is based on the individual vehicle and not the computer. Only about 1 in 100 GM vehicles require it."

Voici une explication venant des US.


"The 1336 code is indicating the requirement of a CKP Relearn. The requirement of this procedure is dependent upon the vehicle itself and not the replacement computer. What this is indicating is that the vehicle is requiring a procedure to determine what the manufacturing tolerance is between the camshaft and the crankshaft. To clear the code you will have to perform the CKP relearn. This will require a TECH 2 from the dealer or any good repair facility will have the proper scan tool (non-dealer tool OBD2 Tool). The whole procedure takes less then 10 minutes once it is hooked to the scan tool. Until you have the CKP done the vehicle will run and operate.

Your oem computer is storing the information from a previous CKP learn which is why the code is not present with the oem computer. "

C est bon a savoir, mais quelqu un connaitrait il cette procedure ?

apparemment faut un tech2 ...

je regarde si je peux faire quelque chose avec hp tuner.
En tout cas il n'y a apparemment rien que tu puisses faire

yep hp tuners peux le faire
http://www.ls1tech.com/forums/showthread.php?t=463173&highlight=CKP

bien vu,