Power Modules

The power module contains the circuits necessary to drive the ignition coil, fuel injector and the alternator field. These are high current devices and have been isolated to minimize any electrical noise in the passenger compartment. The power module also houses the automatic shut-down relay (ASD), which activates the fuel pump, ignition coil, injector and portions of the power module.

The ASD relay is inside the power module, but is turned on and off by the logic module. The distributor pick-up signal goes to the logic module only. In the event of no distributor signal the ASD relay is not activated and power is shut off from the fuel and ignition coil. The power module contains a voltage converter which converts battery voltage to a regulated 8-volt output. This voltage output powers the distributor pick-up and also power the logic module.