That is my purpose - to uncloak the EEC-IV so that we can play with what we bought! The sections titled EEC DIAGNOSTICS, FUEL CONTROL, IGNITION & TIMING CONTROL, FUNCTIONS, SCALARS AND TABLES are departures from the goals stated above - but I felt it was informative and hated to discard it. The EEC MCU probably controls one or more vehicles you own plus it contains all the components necessary to build an efi system for any vehicle - if only we could program and modify it.

Software algorithms and automotive control techniques are purposely absent as the EEC hardware and chip set are what I'm primarily interested in figuring out. INTRODUCTION THE MCU/ECU THE MICROPROCESSOR CPU, ROM, RAM PINOUT 8061 MEMORY MAP 8061 INSTRUCTION SET MCU PARTS LIST ECM TEST PORT (J3) PINOUT ECM CABLE PINOUT EEC DIAGNOSTICS EEC FUEL CONTROL EEC IGNITION and TIMING CONTROL EEC FUNCTIONS EEC SCALARS EEC TABLES MAF CONVERSION TERMS EEC APPLICATIONS EEC-IV REFERENCE SOURCES AFTERMARKET SUPPLIERS CONTENTS: INTRODUCTION I've collected and compiled data to help you decipher the EEC-IV inner workings. DISCLAIMER: Beware - none of this data is guaranteed to be accurate! Use it at your own risk and please let me know what you learn so that I can add to and correct this. There were many contributors who didn't want me to remember them, so I chose to delete most original corresponcences, hence the high probability that I may have failed to acknowledge someone who wanted to be given credit. If it helps you, great! If you learn more about the EEC, please return the favor by sharing what you learn with me and others.) If you were a contributor and didn't get acknowledged, flame me and I'll get it right in the 'next' edition.

1 Technical Notes on The EEC-IV MCU Compiled by Tom Cloud (all fonts are Courier New) (EECtechnical.doc ) (The information supplied here was gotten through researching correspondence, technical publications and from information given to the author.

Eec iv pinout