How To Use Fcar Jumper To Diagnose Connectors In Different Shapes Of Pin For Most Vehicles
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    • How to use Fcar Jumper to diagnose connectors in different shapes of pin for most vehicles
    Fcar automotive diagnostic tool is equipped with various kinds of diagnostic connectors in different shapes of pin for most vehicles. Yet for part of models, Connection failure occurs although used corresponding diagnostic connectors due to disunity of diagnostic connector connection methods or artificial damage, refitting or wrong connection of diagnostic connector. For such cases, you can use jumper box for jumper connection

    Introduction of Jumper box and jumper

    Introduction of Jumper box：
    There are 15 jacks on jumper box 15：1、2、3、GND、6、7、8、9、10、11、12、13、14、15、VCC。
      Definition of each jack on jumper as below：
      1#：K line； 2#：K line；
      3#：K line； 6#：CAN-H；
      7#：RSR232+、J1708+、K line； 8#：K line；
      9#：K line； 10#：K line；
      11#：K line； 12#：K line；
      13#：K line； 14#：CAN-L；
      15#：RSR232-、J1708-、L line GND: Ground wire（Negative）
      VCC：Power line（Positive）； POWER:Power indicator

     

    Introduction of jumper：
    There are 16 jumpers of red, black and yellow color in total in assembly box. 
    For the convenience of distinguish ,
    red jumper normally connect to power positive; 
    black jumper connect to power negative, 
    yellow jumper connect to signal wire. There are 4 kinds of jumper pins: sheet pin, cylindrical, square hole, 
    round hole, for convenient use to various kinds of diagnostic port pin shape.
    Choose appropriate one according to pin of vehicle diagnostic connector pin

    Various kinds of Communication Protocols

    Name of Protocol Name of communication line Reference voltage range Hole number of jumper 
    box to be connected 
    K line communication K 1V lower than battery voltage 7
    CAN communication CAN-H 2.5V＋0.25V 6
    CAN-L 2.5V－0.25V 14
    J1708 communication J1708-A 3V～5V 7
    J1708-B 0V～2V 15
    RS232 communication RS232-TD （-9V）～（-5V） 7
    RS232-RD 0V～0.7V 15

     
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