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.

ECM "Ed99" Data Code

The ECM Programmable Read-Only Memory (PROM) identification number is displayed as a number up to 3 digits long which can be used to verify that proper PROM is installed in ECM.

Fig 1: ECM Diagnostics/Basic Operation & Status Light Displays

Fig 2: ECM Diagnostics/Data,Input,Output Tests/Fixed Spark Mode