Manuals through 2025 now available!
Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.
LEMON is the logical successor to CHARM, I recommend you try it!
Link:
lemon-manuals.la
Circuit Operation
The Powertrain Control Module (PCM) receives inputs from the engine sensors and switches, controlling the functions of the engine. The
PCM also turns on the "CHECK ENGINE" malfunction indicator lamp whenever a malfunction or abnormal engine performance is detected, and allows for diagnostic testing through the data link connector (DLC).