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.

Engine Start Signals

Engine start signal, sent from starter circuit, is used by ECM to determine whether engine is cranking or not. Based on this determination, ECM calculates fuel injection timing, ISC solenoid valve operation, throttle opener and Positive Temperature Coefficient (PTC) operation (Tracker A/T).