Power Module

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 1987 Plymouth Sundance, 1987 Plymouth Caravelle, 1987 Dodge Shadow, 1987 Dodge Lancer, and 1987 Dodge Daytona. However, it is still accessible from the selected car via links, so may be relevant.

The power module contains the circuits necessary to power 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 energizes 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 of the power module, but is turned on and off by the logic module. 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 powers the distributor pick-up and also powers the logic module.