Fuel Injectors & Pumps – Section 5.1 DDEC Abbreviations and Terms

Acronyms‪

Descriptions/Terms‪

BOI‪

Beginning of Injection: The number of crank angle degrees, before top-dead-center (TDC), where the ECU is requesting the injectors to be turned on‪

CEL‪

Check Engine Light‪

DDDL‪

Detroit Diesel Diagnostic Link: PC software package supporting DDEC‪

DDEC‪

Detroit Diesel Electronic Controls‪

DDEC III‪

Third generation Detroit Diesel Electronic Controls‪

DDEC IV‪

Fourth generation Detroit Diesel Electronic Controls‪

DDEC V‪

Fifth generation Detroit Diesel Electronic Controls‪

DDL‪

Diagnostic Data Link: The lines (wires) over which the ECU transmits information that can be read by a Diagnostic Data Reader‪

DDR‪

Diagnostic Data Reader: The hand held tool used for troubleshooting the DDEC system‪

DTC‪

Diagnostic Trouble Code‪

ECU‪

Electronic Control Unit‪

SFT Sensor‪

Supply Fuel Temperature Sensor‪

EUI‪

Electronic Unit Injector‪

FMI‪

Failure Mode Identifier‪

INJ‪

Injector (fuel)‪

IRT‪

Injector Response Time‪

kPa‪

Kilopascals‪

MPG‪

Miles Per Gallon‪

PID‪

Parameter Identification‪

PSI‪

Pounds per Square Inch‪

PW‪

Pulse Width‪

RPM‪

Revolutions Per Minute‪

RSL‪

Red Stop Light‪

SID‪

System Identification‪

VCU‪

Vehicle Control Unit‪

Former Acronyms‪

DDEC V‪

(ECM) Electronic Control Module‪

(ECU) Electronic Control Unit: It reads the engine and vehicle inputs, sensors and switches, calculates injector firing and duration, and fires injectors at appropriate times‪

(EFPA) Electronic Foot Pedal Assembly‪

(AP) Accelerator Pedal: Contains the throttle position sensor‪

(LSG) Limiting Speed Governor‪

(ALSG) Automotive Limiting Speed Governor‪

(TPS) Throttle Position Sensor‪

(AP Sensor) Accelerator Pedal Sensor: Used to detect throttle request.‪