General Diagnosis

The Powertrain Control Module (PCM) is an advanced electronic component that requires careful handling and diagnosis. Incorrect testing procedures or the use of incorrect equipment can damage the PCM. The operation of other components can affect the PCM performance.

Service of the PCM consists of the replacement of the PCM. The PCM does not contain serviceable parts. The PCM does not have a Programmable Read-Only Memory (PROM) chip. The PCM does not have an Erasable Programmable Read Only Memory (EPROM) to calibrate. Replace the PCM as a complete assembly if the PCM is faulty.