Daytona L4-135 2.2L SOHC (1984)
Powertrain Control Module: Description and Operation
W/ Single Point Fuel Injection
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.
Power Module
The power module houses the circuits needed to power the ignition coil and fuel injector, and energizes the automatic shutdown (ASD) relay which
activates the fuel pump, ignition coil and power module itself. The module also receives a signal from the distributor and relays this signal to the logic
module. If no distributor signal is received, the ASD relay is not activated and power is shut off from the fuel pump and ignition coil. A voltage converter
in the power module reduces battery voltage to a regulated 8 volt output which powers the distributor as well as the module.