Technician A says that before performing proprietary reprogramming of an engine ECM, any fault codes should be cleared. Technician B says that in some cases following a proprietary data reprogramming procedure, a verification file has to be uploaded to the OEM data huB. ho is right?
A) Technician A only
B) Technician B only
C) Both A and B.
D) Neither A nor B

Question

Quizplus · Accepted Answer

Both technicians are correct. Clearing fault codes before reprogramming ensures that old errors do not interfere with the update process. Uploading a verification file after reprogramming is often required to confirm the update was successful and to maintain a record with the OEM.

Technician a Says That Before Performing Proprietary Reprogramming of an Engine