Appendix C - Glossary
- accessories
- features that are not originally equipped by the manufacturer
- alternator voltage regulator (AVR)
- refers to a device that is used to test generators/alternators for electrical output, voltage and amperage
- controller area network (CAN)
- a protocol for communication between electronic/computer modules
- digital multimeter (DMM)
- a digital electronic measuring instrument that combines several functions in one unit
- inclinometer
- device used to measure the incline of an object, measured in degrees
- J2534 standard
- an interface standard designed by SAE (Society of Automotive Engineers) for vehicle electronics reprogramming
- low voltage
- for automotive applications, this refers to 12 volt systems
- manometer
- a graduated tube containing water which measures pressure/vacuum in units of water column
- micrometer
- a precision measuring device for small distances
- Ohm’s Law
- the relationship between current, resistance and voltage in any electrical circuit
- on-board diagnostics
- part of a vehicle’s engine
- system (OBD)
- management software used to monitor system performance
- options
- features that are originally equipped at time of manufacture
- pneumatic
- operated by compressed air
- pyrometer
- instrument used to measure temperatures using infrared light
- refractometer
- test instrument used to measure the strength of antifreeze or specific gravity of electrolyte in a cell of a lead/acid battery
- sensory inspection
- using one or more senses to perform an inspection
- Watt’s Law
- the relationship of power to current, voltage and resistance in any electrical circuit