My ECM has a long blue module (Memcal) but no EPROM. What do I do?
The EPROMs used is these ECMs are located in the Memcal. (You can see the EPROM through one of the holes in the top of the Memcal.) To gain access to the EPROM, carefully remove the blue (sometimes it’s tan) plastic cover. The Memcals generally also contain the ‘limp-home mode’ resistor network and some knock sensor signal conditioning circuitry. There are several ways to work with these Memcals.
