General 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 and reprogramming of the PCM. The PCM has no serviceable parts, but does contain an Erasable Programmable Read Only Memory (EPROM) chip that requires recalibration. Replace the PCM as a complete assembly if the PCM is determined to be faulty.