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
Vehicle Speed Signal
The vehicle speed signal is sent as a direct input from the
TCM to PCM. The output speed sensor signal is sent to the TCM and used as the vehicle speed signal. The TCM converts the output speed sensor signal to an 8000 pulse-per-mile signal. The signal is then sent directly to the PCM. The PCM receives this signal and broadcasts it on the communication bus to be used by other modules.