FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

Logic Module


The logic module is a digital computer which contains a microprocessor. Input signals from various switches, sensors and components are sent to the module, which then computes the fuel injector pulse width, spark advance, ignition coil dwell, idle speed and purge and EGR control solenoid cycles.