The ECU examines the condition of the transmission, the status of the entire control system, and performs a periodic self- check. ... In general, the diagnostic code remains stored in memory even if the anomaly disappears. ... This very flexible menu driven Figure 8 a Diagnostic Data Reader (DDR) Nomenclature DDR provides a common service tool for the Allison ATEC I and ATEC II systems and also foranbsp;...
|Title||:||Vehicle Electronics in the 90's|