Common tech Abbreviations and Acronyms

[EvansBlue]

Here is a start on untangling these codes. If you run across acronyms or jargon you don't understand, send them in. AFC - Air Flow Control ALDL - Assembly Line Diagnostic Link. Former name for GM (only) Data Link Connector, the connector socket into which the scan tool plug is inserted; sometimes used to refer to any pre-OBD II computer signals ASE- Automotive Service Excellence. To become fully ASE certified, there are 12 areas of expertise a mechanic is tested on. BCM- Body Control Module (systematic controls lighting(DRL/AHL), climate controls, radio, automatic intermittent wipers, etc) CAN - Controller Area Network CARB - California Air Resources Board CFI - Central Fuel Injection (a.k.a. Throttle Body Fuel Injection TBI) CFI - Continuous Fuel Injection CO - Carbon Monoxide CPS-crank position sensor DLC - Data Link Connector Driving Cycle - A specific sequence of start-up, warm-up and driving tasks that tests all OBD II functions (Details) DTC - Diagnostic Trouble Code ECM - Engine Control Module- usually the main in-car computer controlling emissions and engine operation ECT - Engine Coolant Temperature ECU- Engine Control Unit- same as ECM, but usually called ECU in imports. EEC - Electronic Engine Control EEPROM or E2PROM - Electrically Erasable Programmable Read Only Memory EFI - Electronic Fuel Injection EGR - Exhaust Gas Recirculation EMR - Electronic Module Retard EPA - Environmental Protection Agency. Federal agency. Office of Mobile Sources is the branch concerned with auto emissions. ESC - Electronic Spark Control EST - Electronic Spark Timing DPFE - Differential Pressure Feedback EGR sensor ( On Ford OBDII systems). DTC - Diagnostic Trouble Code FLI - Fuel Level Indicator Fuel Trim - Engine computer function that keeps the air/fuel mixture as close to the ideal 14.7:1 stoichiometric ratio as possible HC - Hydrocarbons HEI - High Energy Ignition HO2S - Heated Oxygen Sensor IAC- Idle Air Control IAT - Intake Air Temperature ICM- Ignition control module ISO 9141 - International Standards Organization OBDII communication mode, used by Chrysler and most foreign cars. One of three hardware layers defined by OBD II J1850PWM - (Pulse Width Modulated) SAE-established OBD II communication standard used by Ford domestic cars and light trucks. One of three hardware layers defined by OBD II J1850VPW - (Variable Pulse Width Modulated) SAE-established OBD II communication standard used by GM cars and light trucks. One of three hardware layers defined by OBD II J1962 - SAE-established standard for the connector plug layout used for all OBD II scan tools J1978 - SAE-established standard for OBD II scan tools J1979 - SAE-established standard for diagnostic test modes J2012 - SAE-established standard accepted by EPA as the standard test report language for emission tests MAF - Mass Air Flow MAP - Manifold Absolute Pressure MAT - Manifold Air Temperature MFG - Manufacturer MIL - Malfunction Indicator Light. The "Check Engine Light" on your dash. NOx - Oxides of Nitrogen O2 - Oxygen OBD - On-Board Diagnostics OBDII or OBD II - Updated On-Board Diagnostics standard effective in cars sold in the US after 1-1-96 Parameters - Readings on scan tools representing functions measured by OBD II and proprietary readings PCM - Powertrain Control Module, the on-board computer that controls engine and drive train PCV - Positive Crankcase Ventilation PID - Parameter ID Proprietary Readings - Parameters shown by on-board computers which are not required by OBD II, but included by manufacturer to assist in trouble-shooting specific vehicles. PTC - Pending Trouble Code RPM - Revolutions Per Minute SAE - Society of Automotive Engineers, professional organization that set the standards that EPA adopted for OBD and OBD II Scan Tool - Computer based read-out equipment to display OBD II parameters SES - Service Engine Soon dash light, now referred to as MIL SFI - Sequential Fuel Injection Stoichiometric ( Stoy'-kee-o-metric) Ratio - Theoretical perfect combustion ratio of 1 part gas to 14.7 parts air TBI - Throttle Body Injection TPI - Tuned Port Injection TPS - Throttle Position Sensor TPMS- Tire Pressure Monitoring System TV- as in Trottle valve VAC - Vacuum VCM - Vehicle Control Module, the in-car computer that oversees engine management, transmission operation, anti-lock brakes, and other functions not directly related to emissions control VIN - Vehicle Identification Number VSS - Vehicle Speed Sensor WMS= wheel mounting surface. WOT - Wide Open Throttle 700R4/4L60- are basically the same thing. 4L60E is an electronically controlled 700R4/4L60. 4x4x4=4wheels x 4driven wheels x 4 doors 4x2x2=4wheels x 2driven wheels x 2 doors 4x2x4 4x4x2 4.3/700R4/207= example of: Engine size/ transmission/ transfer case

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[TransAm Man]

MPFI stands for multi port fuel injection

[bespoke]

Hi,
Well this is very important in student life or in professional life that learn lot of abbreviation for writing short forms for understanding.

[MDTAHOE]

CKP- Crank position sensor
CMP- Cam position sensor
EBCM- Electronic brake control module

[unicorn]

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[aja72]

Originally Posted by unicorn

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Interesting suggestion.