October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

SCI Transmit

PURPOSE
Powertrain Control Module (PCM) sends data to the scan tool through this circuit, including;

^ Sensor input values
^ Diagnostic Trouble Codes (DTC's) stored in memory
^ Last deactivation cause (i.e.. speed control last shut off by; speed control switch, brake switch or no crank sensor signal).