{"id":3713,"date":"2025-10-17T10:46:31","date_gmt":"2025-10-17T08:46:31","guid":{"rendered":"https:\/\/diagzone.org\/?p=3713"},"modified":"2025-10-17T10:46:32","modified_gmt":"2025-10-17T08:46:32","slug":"iso-9141-2-standard-for-automotive-communication-protocols","status":"publish","type":"post","link":"https:\/\/diagzone.org\/cs\/iso-9141-2-standard-for-automotive-communication-protocols\/","title":{"rendered":"ISO 9141-2: Standard pro automobilov\u00e9 komunika\u010dn\u00ed protokoly"},"content":{"rendered":"

ISO 9141-2 je jedn\u00edm ze z\u00e1kladn\u00edch komunika\u010dn\u00edch protokol\u016f OBD-II, vyvinut\u00fdm pro propojen\u00ed elektronick\u00fdch \u0159\u00eddic\u00edch jednotek (ECU) ve vozidlech, zejm\u00e9na v evropsk\u00fdch a asijsk\u00fdch automobilech. Tento standard je zvl\u00e1\u0161t\u011b d\u016fle\u017eit\u00fd pro diagnostiku star\u0161\u00edch model\u016f, proto\u017ee umo\u017e\u0148uje spolehlivou v\u00fdm\u011bnu dat mezi vozidlem a diagnostick\u00fdm n\u00e1strojem.<\/p>\n\n\n\n

Jak funguje ISO 9141-2?<\/strong><\/p>\n\n\n\n

ISO 9141-2 vyu\u017e\u00edv\u00e1 asynchronn\u00ed s\u00e9riovou komunikaci p\u0159es jeden nebo dva vodi\u010de (linky K a L) pro p\u0159enos dat. P\u0159enosov\u00e1 rychlost je 10,4 kb\/s, co\u017e je dosta\u010duj\u00edc\u00ed pro z\u00e1kladn\u00ed diagnostiku, \u010dten\u00ed senzorov\u00fdch dat a z\u00edsk\u00e1v\u00e1n\u00ed chybov\u00fdch k\u00f3d\u016f DTC. Protokol tak\u00e9 zahrnuje handshake postupy, kter\u00e9 zaji\u0161\u0165uj\u00ed stabiln\u00ed p\u0159enos dat a sni\u017euj\u00ed pravd\u011bpodobnost chyb.<\/p>\n\n\n\n

OBD-II adapt\u00e9ry Launch podporuj\u00edc\u00ed tento protokol:<\/strong><\/p>\n\n\n\n

DBScar I, DBScar II, DBScar III, DBScar IV, DBScar V, DBScar VII<\/p>\n\n\n\n

Za\u0159\u00edzen\u00ed ThinkDiag podporuj\u00edc\u00ed tento protokol:<\/strong><\/p>\n\n\n\n

ThinkDiag, ThinkDiag 2<\/p>\n\n\n\n

Za\u0159\u00edzen\u00ed Ediag podporuj\u00edc\u00ed tento protokol:<\/strong><\/p>\n\n\n\n

Ediag YA-101, Ediag YA-201, Ediag Plus, Ediag Elite<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Typy vozidel a zna\u010dky podporovan\u00e9 protokolem:<\/strong><\/p>\n\n\n\n

Osobn\u00ed vozidla evropsk\u00fdch a asijsk\u00fdch v\u00fdrobc\u016f, p\u0159edev\u0161\u00edm Volkswagen, BMW, Mercedes-Benz, Audi, Honda, Toyota, Nissan, Mazda; modely z let 1996\u20132005.<\/p>\n\n\n\n

V\u00fdhody ISO 9141-2<\/strong><\/p>\n\n\n\n

    \n
  • Spolehliv\u00e1 komunikace u star\u0161\u00edch generac\u00ed vozidel<\/li>\n\n\n\n
  • Jednoduch\u00e1 implementace, zejm\u00e9na pro s\u00e9riov\u00e1 diagnostick\u00e1 za\u0159\u00edzen\u00ed<\/li>\n\n\n\n
  • Standardizovan\u00fd v r\u00e1mci syst\u00e9mu OBD-II, usnad\u0148uje z\u00e1kladn\u00ed diagnostiku<\/li>\n\n\n\n
  • Odoln\u00fd v\u016f\u010di elektromagnetick\u00e9mu ru\u0161en\u00ed, zejm\u00e9na u kr\u00e1tk\u00fdch kabelov\u00fdch veden\u00ed<\/li>\n<\/ul>\n\n\n\n

    Nev\u00fdhody a omezen\u00ed<\/strong><\/p>\n\n\n\n

      \n
    • N\u00edzk\u00e1 p\u0159enosov\u00e1 rychlost, kter\u00e1 omezuje monitorov\u00e1n\u00ed v re\u00e1ln\u00e9m \u010dase a pokro\u010dil\u00e9 funkce<\/li>\n\n\n\n
    • Zastaral\u00fd ve srovn\u00e1n\u00ed s modern\u00edmi protokoly CAN nebo UDS<\/li>\n\n\n\n
    • Omezen\u00e9 pou\u017eit\u00ed v nov\u011bj\u0161\u00edch vozidlech a elektrick\u00fdch syst\u00e9mech<\/li>\n\n\n\n
    • M\u00e9n\u011b flexibiln\u00ed pro komunikaci mezi v\u00edce moduly<\/li>\n<\/ul>\n\n\n\n

      Pou\u017eit\u00ed ISO 9141-2<\/strong><\/p>\n\n\n\n

      ISO 9141-2 se pou\u017e\u00edv\u00e1 ke \u010dten\u00ed a maz\u00e1n\u00ed chybov\u00fdch k\u00f3d\u016f DTC, kontrole senzorov\u00fdch dat a prov\u00e1d\u011bn\u00ed z\u00e1kladn\u00ed diagnostiky ECU u star\u0161\u00edch vozidel. P\u0159esto\u017ee je tento standard postupn\u011b nahrazov\u00e1n modern\u00edmi protokoly, jeho znalost z\u016fst\u00e1v\u00e1 nezbytn\u00e1 pro diagnostiky a techniky pracuj\u00edc\u00ed s \u0161irokou \u0161k\u00e1lou vozidel.<\/p>\n\n\n\n

      Z\u00e1v\u011br<\/strong><\/p>\n\n\n\n

      ISO 9141-2 tvo\u0159\u00ed z\u00e1klad pro pochopen\u00ed s\u00e9riov\u00fdch protokol\u016f OBD-II. Jeho jednoduchost a spolehlivost jej \u010din\u00ed ide\u00e1ln\u00edm pro diagnostiku star\u0161\u00edch vozidel, i kdy\u017e jej modern\u00ed syst\u00e9my postupn\u011b nahrazuj\u00ed rychlej\u0161\u00edmi a flexibiln\u011bj\u0161\u00edmi protokoly, jako je CAN.<\/p>","protected":false},"excerpt":{"rendered":"

      ISO 9141-2 is one of the basic OBD-II communication protocols, developed for connecting electronic control units (ECUs) in vehicles, particularly in European and Asian cars. This standard is especially important for diagnosing older models, as it enables reliable data exchange between the vehicle and a diagnostic tool. How Does ISO 9141-2 Work? ISO 9141-2 uses…<\/p>","protected":false},"author":1,"featured_media":3715,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"ISO 9141-2: standard for automotive communication protocols","_seopress_titles_desc":"ISO 9141-2 forms the foundation for understanding serial OBD-II protocols. Its simplicity and reliability make it ideal for diagnosing older cars.","_seopress_robots_index":"","inline_featured_image":false,"_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_themeisle_gutenberg_block_has_review":false,"_kad_post_transparent":"","_kad_post_title":"","_kad_post_layout":"","_kad_post_sidebar_id":"","_kad_post_content_style":"","_kad_post_vertical_padding":"","_kad_post_feature":"","_kad_post_feature_position":"","_kad_post_header":false,"_kad_post_footer":false,"iawp_total_views":166,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3713","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"acf":[],"taxonomy_info":{"category":[{"value":1,"label":"Uncategorized"}]},"featured_image_src_large":["https:\/\/diagzone.org\/wp-content\/uploads\/2025\/10\/ISO-9141-2.jpg",600,600,false],"author_info":{"display_name":"diagzone","author_link":"https:\/\/diagzone.org\/cs\/author\/xpro5\/"},"comment_info":0,"category_info":[{"term_id":1,"name":"Uncategorized","slug":"uncategorized","term_group":0,"term_taxonomy_id":1,"taxonomy":"category","description":"","parent":0,"count":33,"filter":"raw","cat_ID":1,"category_count":33,"category_description":"","cat_name":"Uncategorized","category_nicename":"uncategorized","category_parent":0}],"tag_info":false,"_links":{"self":[{"href":"https:\/\/diagzone.org\/cs\/wp-json\/wp\/v2\/posts\/3713","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/diagzone.org\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/diagzone.org\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/diagzone.org\/cs\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/diagzone.org\/cs\/wp-json\/wp\/v2\/comments?post=3713"}],"version-history":[{"count":1,"href":"https:\/\/diagzone.org\/cs\/wp-json\/wp\/v2\/posts\/3713\/revisions"}],"predecessor-version":[{"id":3718,"href":"https:\/\/diagzone.org\/cs\/wp-json\/wp\/v2\/posts\/3713\/revisions\/3718"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/diagzone.org\/cs\/wp-json\/wp\/v2\/media\/3715"}],"wp:attachment":[{"href":"https:\/\/diagzone.org\/cs\/wp-json\/wp\/v2\/media?parent=3713"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/diagzone.org\/cs\/wp-json\/wp\/v2\/categories?post=3713"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/diagzone.org\/cs\/wp-json\/wp\/v2\/tags?post=3713"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}