Region a - Total signal input range possible that can be seen by an electronic l t i module d l Region b - Total signal range physically possible as defined by an application. memory access in J1939J1939-73 – Change g engine g rating g calibration – Change engine and or vehicle configuration 22-24 September 2009 22 Injector 1 voltage above normal (SPN / FMI) Boost sensor voltage below normal Oil filter replacement needed Read or clear DTCs found in J1939J1939-71 g coolant temperature p – Engine = 175 oF – MPH = 63 mph – Fuel economy = 8.2 mpgĭiagnostics / Service. found in J1939J1939-71 – Cab controller reads cruise control switches Sends on network – Engine performs cruise control Uses switch values from networkĪpplication Layer pp y Messages g ((cont.)) Information Sharing. found in J1939J1939-71 – Transmission commands engine to 0% torque – ABS commands retarder to -100% torque Shift or brake assist Labels / messages g assigned g and (available)Īpplication Layer pp y Messages g Control. Synopsis of Application Layers Subject AreaĬontrol, multiplexing, information sharing, diagnostics and proprietary Parameters per label/message (min to max)ĬAN Extended Data Frame as Defined by b J1939 J1939-21 (CAN Data D t Link Li k L Layer)) CAN Extended Data Frame Synopsis of Data Link Layer Subject Area Message / PDU format I t ll d OBD C Installed Connector t 22-24 September 2009 22
#J1939 71 2013 iso
MIL OBD Connector SAE J1939-13 OBD Connector ISO 15031-3 Proprietary OEM Use or Implement Bus CAN_L CAN L
Proprietary OEM Use or Implement Bus CAN_H J1939 Diagnostic Connector Heavy Duty 9 Pin Connector Pin Numberīattery (+) (allows 12 and 24 volt systems)ĬAN_SHLD (J1939-11) or No Connect (J1939-12) Topology Linear Bus Bus Length 40 meters (131 feet) Stub Length 1 meter (3.3 feet) Stub Connector 3-pin Termination 2 required: passive resistors (optional internal to ECU) Cabling Diagnostic C Connector tĤ0 meters (inc stub length) 3 meter 2-pin 2 required: passive resistors (optonal internal to ECU) SLOT – Scaling, Limits, Offset and Transfer Function SPN – Suspect Parameter Number FMI – Failure Mode Identifier OC – Occurrence Count CM – Conversion Method
#J1939 71 2013 code
PGN – Parameter Group Number DM – Diagnostic Message DTC – Diagnostic g Trouble Code – – – – OBD Communications Compliance Test Cases For Heavy Duty Veh.ĭefinition of Terms PDU – Protocol Data Unit – PDUF – PDU Format – PDUS – PDU Specific – GE – Group Extension Physical Layer – Twisted Quad, Active Terminators (ISO 11783 11783-2)Īpplication pp Layer Layer- y -Generator Sets and Industrial Physical Layer – Shielded Twisted Pair with Drain OBD for Marine SparkSpark-Ignition Sterndrive and Inboard Engines On Board Diagnostics Implementation Guide
#J1939 71 2013 serial
RP for f S Serial i C Control and C Communications i i Vehicle i NetworkĬonstruction and Agriculture Specific (same as ISO 1178311783-1)
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