{"id":683165,"date":"2024-11-06T04:44:14","date_gmt":"2024-11-06T04:44:14","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/sae-j-19782022\/"},"modified":"2024-11-06T04:44:14","modified_gmt":"2024-11-06T04:44:14","slug":"sae-j-19782022","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/sae\/sae-j-19782022\/","title":{"rendered":"SAE J 1978:2022"},"content":{"rendered":"
SAE J1978\/ISO 15031-4 specifies a complementary set of functions to be provided by an OBD-II scan tool. These functions provide complete, efficient, and safe access to all regulated OBD (on-board diagnostic) services on any vehicle which is compliant with SAE J1978\/ISO 15031-4.<\/div>\n
The SAE J1978 content of this document is intended to satisfy the requirements of an OBD-II scan tool as required by current U.S. on-board diagnostic (OBD) regulations.<\/div>\n
The ISO 15031-4 content of this document is intended to satisfy the requirements of OBD requirements in countries other than the U.S., and includes functionality not required or not allowed in the U.S.<\/div>\n
This document specifies:<\/div>\n
    \n
  • \n
    A means of establishing communications between an OBD-equipped vehicle and an OBD-II scan tool.<\/div>\n<\/li>\n
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    A set of diagnostic services to be provided by an OBD-II scan tool in order to exercise the services defined in SAE J1979\/ISO 15031-5.<\/div>\n<\/li>\n<\/ul>\n
    SAE J1978\/ISO 15031-4 does not preclude the inclusion of additional capabilities or functions in an OBD-II scan tool. However, it is the responsibility of the OBD-II scan tool designer to ensure that no such capability or function can adversely affect either an OBD-equipped vehicle, which may be connected to the OBD-II scan tool, or to the OBD-II scan tool itself.<\/div>\n
    Differences in the SAE J1978 and ISO 15031-4 requirements are highlighted by bold italic text<\/i><\/b> in the technical requirements sections of this document. Notable examples are:<\/div>\n
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      Current U.S. OBD regulations will permit ISO 15765-4 as an allowable OBD serial data link at 500 kbps only.<\/i><\/b> Only those provisions of ISO 15765-4 that pertain to 500 kbps are required to be supported by an SAE J1978 diagnostic scan tool.<\/div>\n<\/li>\n
    • \n
      Current U.S. OBD regulations will not allow greater than 20 V at the SAE J1962 connector.<\/i><\/b> Only the Type A connector as defined in SAE J1962\/ISO 15031-3 needs to be supported by an SAE J1978 diagnostic scan tool.<\/div>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

      OBD-II Scan Tool<\/b><\/p>\n\n\n\n\n
      Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
      SAE<\/b><\/a><\/td>\n2022-05-26<\/td>\n34<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":683173,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2639],"product_tag":[],"class_list":{"0":"post-683165","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-sae","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/683165","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/683173"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=683165"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=683165"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=683165"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}