Ignition System: Description and Operation

Digital motor electronics (DME) is used to control engine operation. Using sensor input, it is able to monitor engine speed, load, temperature, fuel mixture and, through the knock/charging pressure (K/CP) control unit, preignition. These inputs are applied to preprogrammed "maps" to determine ignition output characteristics necessary for optimum fuel economy and performance. Timing is then advanced or retarded as necessary to comply with the ignition map.

NOTE: All DME related components are covered under COMPUTERIZED ENGINE CONTROLS.