All we need do is tell a little white lie to the scan tool or programming device! For this months column we will describe a quicker method than acquiring the As Built hex info to install a replacement powertrain control module (PCM) in a Ford vehicle where the old PCM is damaged and not communicating. We will describe this process for Ford ECUs in next month's column. This As Built data is actually multiple lines of hexadecimal numbers entered into dialogue boxes in the programming software. Once purchased you use the vehicle identification number (VIN) to acquire the As Built data for the particular ECU you are replacing.

This procedure requires purchasing a per use subscription for all ECUs, except the PCM, from the Ford Motorcraft website. If the information cannot be inhaled from the original module, As-built data must be used to properly configure module'

'Programmable Module Installation (PMI) must be performed when replacing module. The Ford recommended procedure for this is stated as: In this instance, you are going to have to use a different method of telling the replacement ECU what the needed As Built data information should be. The normal Ford programming procedure has you 'inhale' (read and store) the As Built data from the old ECU to the scan tool so that these As Built vehicle specific production and calibration details can then be transferred to a new, remanufactured or salvaged ECU you are installing.Ī complication arises when you are attempting to replace an ECU that is dead or not communicating with the scan tool or programming device. However, Ford does do one thing differently than most other OEMs. Programming Ford electronic control units (ECUs) is pretty straightforward and simple compared to many other OEMs. Scope & scan scopes PCM Ford PCM vehicle diagnostics repair shop training technician training automotive aftermarket

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