Engine Controls - Theory & Operation: Introduction: Terminology
Due to Federal government requirements, manufacturers may use names and acronyms for systems and components different than those used in previous years. The following will help eliminate confusion when dealing with these components and systems.
SAE TERMINOLOGY
| Former Name Or Acronym | New Name Or Acronym |
|---|---|
| ALDL | Data Link Connector (DLC) |
| CHECK ENGINE Light | Malfunction Indicator Light (MIL) |
| CTS | Engine Coolant Temperature (ECT) |
| Diagnostic Circuit Check | On-Board Diagnostic System Check |
| ESC System | Knock Sensor (KS) System |
| EST System | Ignition Control (IC) Systems |
| MAT Sensor | Intake Air Temperature (IAT) Sensor |
| Park/Neutral (P/N) Switch | Park/Neutral Position (PNP) Switch |
| Service Engine Soon (SES) Light | Malfunction Indicator Light (MIL) |
| Thermostatic Air Cleaner (TAC) | Air Cleaner (ACL) |
| Throttle Position Switch | Closed Throttle Position (CTP) Switch |
| Throttle Position Switch | Wide Open Throttle (WOT) Switch |
| Viscous Converter Clutch | Torque Converter Clutch (TCC) |