Engine Control Module: Testing and Inspection

Powertrain Control Module Diagnosis
The powertrain control module (PCM) is an advanced electronic component that requires careful handling and diagnosis. The PCM can be damaged by improper testing procedures or equipment. The PCM's performance can be affected by the use and operation of other components.
Service of the PCM consists of the replacement of the PCM. The PCM has no serviceable parts. The PCM does not have a programmable read only memory (PROM) chip to replace inside the PCM. The PCM does not have an erasable programmable read only memory (EPROM) chip to recalibrate. Replace the PCM as a complete assembly if the PCM is determined to be faulty.