[{"data":1,"prerenderedAt":148},["ShallowReactive",2],{"connector:obd2-j1962:en":3},{"connector":4,"prose":124,"confirmations":147},{"schemaVersion":5,"governance":6,"meta":20,"pins":52},"1.0.0",{"publication":7,"verification":10,"provenance":15},{"status":8,"publishedDate":9},"published","2026-10-19",{"status":11,"verifiedDate":9,"verifiedBy":12,"checklist":13},"verified","Antigravity (LLM review against cited primary sources authorized by owner GO)",{"schema":14,"technicalFacts":14,"relationships":14,"sources":14},true,{"sourceUrls":16},[17,18,19],"https:\u002F\u002Fwww.scantool.net\u002Fscantool\u002Fdownloads\u002F206\u002Fstn21xx_ds_c.pdf","https:\u002F\u002Fwww.scantool.net\u002Fscantool\u002Fdownloads\u002F98\u002Fstn1100-frpm.pdf","https:\u002F\u002Fcdn.sparkfun.com\u002Fassets\u002Flearn_tutorials\u002F8\u002F3\u002FELM327DS.pdf",{"slug":21,"name":22,"title":23,"standard":24,"positionCount":25,"layout":26,"category":27,"source":28,"specs":39,"overview":42},"obd2-j1962","OBD-II Connector","OBD-II Connector Pinout (SAE J1962) — Interactive Explorer","SAE J1962",16,"trapezoid","automotive",[29,34,36],{"label":30,"url":17,"authority":31,"documentType":32,"publisher":33},"OBD Solutions STN21xx Multiprotocol OBD to UART Interpreter datasheet, rev C (2019), §6.2.5 Figure 10 \"STN2120 OBD Port Connector\"","primary","manufacturer_documentation","OBD Solutions",{"label":35,"url":18,"authority":31,"documentType":32,"publisher":33},"OBD Solutions OBDLink Family Reference and Programming Manual (FRPM), protocol tables for HS-CAN, MS-CAN and SW-CAN",{"label":37,"url":19,"authority":31,"documentType":32,"publisher":38},"Elm Electronics ELM327 OBD to RS232 Interpreter datasheet v2.0 (2013), Figure 8 and Figure 9","Elm Electronics",{"standard":24,"positions":25,"noteKeys":40},[41],"pages.obd2-j1962.overview.notes.vehicleSocket",{"summaryKey":43,"useCaseKeys":44,"beforeYouWireKeys":48},"pages.obd2-j1962.overview.summary",[45,46,47],"pages.obd2-j1962.overview.useCases.diagnostics","pages.obd2-j1962.overview.useCases.scan","pages.obd2-j1962.overview.useCases.telemetry",[49,50,51],"pages.obd2-j1962.overview.before.power","pages.obd2-j1962.overview.before.oem","pages.obd2-j1962.overview.before.protocol",[53,61,66,70,75,79,84,89,93,96,100,104,107,110,114,118],{"n":54,"category":55,"signal":56,"role":57,"standardized":58,"warningCodes":59},1,"oem","OEM","Manufacturer discretionary (e.g. GM single-wire CAN)",false,[60],"manufacturerDiscretionary",{"n":62,"category":63,"signal":64,"role":65,"standardized":14},2,"j1850","J1850 Bus+","J1850 Bus+ (PWM and VPW)",{"n":67,"category":55,"signal":56,"role":68,"standardized":58,"warningCodes":69},3,"Discretionary (e.g. Ford MS-CAN+)",[60],{"n":71,"category":72,"signal":73,"role":74,"standardized":14},4,"gnd","CGND","Chassis ground",{"n":76,"category":72,"signal":77,"role":78,"standardized":14},5,"SGND","Signal ground",{"n":80,"category":81,"signal":82,"role":83,"standardized":14},6,"can","CAN-H","CAN High (ISO 15765-4)",{"n":85,"category":86,"signal":87,"role":88,"standardized":14},7,"iso","K-line","ISO 9141-2 \u002F ISO 14230-4 K-line",{"n":90,"category":55,"signal":56,"role":91,"standardized":58,"warningCodes":92},8,"Manufacturer discretionary",[60],{"n":94,"category":55,"signal":56,"role":91,"standardized":58,"warningCodes":95},9,[60],{"n":97,"category":63,"signal":98,"role":99,"standardized":14},10,"J1850 Bus−","J1850 Bus− (PWM only)",{"n":101,"category":55,"signal":56,"role":102,"standardized":58,"warningCodes":103},11,"Discretionary (e.g. Ford MS-CAN−)",[60],{"n":105,"category":55,"signal":56,"role":91,"standardized":58,"warningCodes":106},12,[60],{"n":108,"category":55,"signal":56,"role":91,"standardized":58,"warningCodes":109},13,[60],{"n":111,"category":81,"signal":112,"role":113,"standardized":14},14,"CAN-L","CAN Low (ISO 15765-4)",{"n":115,"category":86,"signal":116,"role":117,"standardized":14},15,"L-line","ISO 9141-2 \u002F ISO 14230-4 L-line",{"n":25,"category":119,"signal":120,"role":121,"standardized":14,"warningCodes":122},"power","BAT+","Battery positive (12 V; 24 V on heavy vehicles), stays live with the vehicle off",[123],"alwaysOn12V",{"title":125,"description":126,"card":127,"intro":128,"signalsTitle":129,"signals":130,"safetyTitle":131,"safety":132,"legacyTitle":133,"legacy":134,"overview":135},"OBD-II Connector Pinout (SAE J1962)","OBD-II (SAE J1962) diagnostic connector pinout: CAN bus, J1850 PWM\u002FVPW, ISO 9141-2 K-line, chassis and signal grounds, +12V battery power, and OEM positions.","Sixteen-position SAE J1962 diagnostic connector with protocol and safety notes.","The SAE J1962 diagnostic socket has 16 positions. Select a contact to identify its standardized signal or see that the position is left to the vehicle manufacturer.","CAN, grounds and power","Modern diagnostics commonly use CAN on pins 6 and 14. Pin 4 is chassis ground, pin 5 is signal ground and pin 16 is an always-live battery supply. Treat the two grounds according to their assigned purpose and protect any connection to pin 16 with appropriate current limiting or a fuse.","Manufacturer-discretionary pins","Pins 1, 3, 8, 9 and 11–13 are not assigned a universal diagnostic signal by this layout. A manufacturer may use them for another network or leave them unused. Never infer a signal from the connector position alone; consult service information for the exact vehicle.","Legacy diagnostic protocols","Pins 2 and 10 carry SAE J1850 on vehicles that implement it. Pin 7 is the ISO 9141-2 or ISO 14230-4 K-line, and pin 15 is the optional L-line. These older protocols are not expected on every vehicle and must not be confused with the CAN pair.",{"summary":136,"notes":137,"useCases":139,"before":143},"SAE J1962 defines the 16-position diagnostic connector used for OBD communication between a vehicle and test equipment. The connector can expose CAN, legacy diagnostic buses, grounds, battery power and manufacturer-discretionary positions.",{"vehicleSocket":138},"The diagram is a view into the vehicle-side socket.",{"diagnostics":140,"scan":141,"telemetry":142},"Vehicle fault-code and live-data diagnostics","Connecting a compliant scan tool","Read-only vehicle telemetry with protocol-aware hardware",{"power":144,"oem":145,"protocol":146},"Pin 16 is an always-live battery supply and must be fused appropriately.","Do not assume a function for manufacturer-discretionary positions.","Identify the supported protocol before attaching interface electronics.",null,1793836415321]