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Hãng khác Hiểu cái này trước khi hiểu về Code OBD II

Thảo luận trong 'Ô tô' bắt đầu bởi hyundai, 7/10/11.

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  1. hyundai

    hyundai Bằng lái Hạng F

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    OBD-II terminology consists of acronyms, jargon, shorthand and code phrases that have meaning to the select few and sometimes seem for the rest of us. Here is a chance to untangling these symbols.
    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
    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
    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
    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
    IAT - Intake Air Temperature
    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 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
    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
    WOT - Wide Open Throttle

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