Engine Control System - Self-Diagnostics: Programming

CAUTION: Turn the ignition OFF when installing or removing the PCM connectors and disconnecting or reconnecting the power to the PCM (battery cable, PCM pigtail, PCM fuse, jumper cables, etc.) to prevent internal PCM damage.

NOTE: Service of the Powertrain Control Module (PCM) consists of a complete replacement of the PCM. There are no serviceable parts, such as programmable read-only memory (PROM) or erasable programmable read-only memory (EPROM) to replace inside the PCM. If PCM is determined to be faulty, the PCM is to be replaced as a complete assembly.