FTB与DTC的含义如下: FTB:在DTC(诊断故障码)的语境中,FTB代表故障类型字节(Failure Type Byte)。它是用于进一步细分和描述故障具体类型的信息。在3字节的DTC中,最后一个字节通常用于表示FTB,根据SAE J2012-DA等标准,这个字节中的不同位(Bit)组合代表了不同的故障类型。 DTC:全称为Diagnostic Trouble Code,即诊断...
第三位数字表示故障所属的子系统码，而最后两位数字则提供了关于故障对象和类型的详细信息。例如，在故障码“P080081”中，“P08”指动力系统的传动系统控制故障，“00”代表传感器，“81”则表示信号无效。因此，这个DTC具体指的是动力系统的传动系统控制的传感器信号无效的问题。此外，LowByte字节用于表示Failure Type...
-When 3-byte DTCs are used in accordance with this specification, the two most significant bytes are decoded based upon the DTC Format Identifier (0016 or 0416) specified by the implemented diagnostic protocol; the least significant byte is decoded based upon SAE J2012-DA failure type byte (FT...
or when some other value is expected.0405060708090A – 0F101112circuit short to batteryThis sub type is used for failures, where the server measures vehicle system (battery positive) potential for greater than a specified time period or when some other value is expected.Failure Type Byte(hex) ...
Failure TypeByte (hex) ThissubtypeisusedforfailureswherethebaseDTCtextstringprovidesthecompletedescriptionofthefailureitself(noCategoryandnoSub Typeinformationused,e.g.emissions-relatedDTC(012700hex):P0127IntakeAirTemperatureTooHigh). ThissubtypeisusedforGeneralElectricalFailuresthatcannotbeassignedtoaspecificsubtype...
If this test is to check the CPU, the DTC may read “internal failure,” and the diagnostic trouble tree would instruct you to replace the control unit. What needs to be understood here is that the instructions did not account for someone putting in an extra fuse or relay in a spare ...
Under Failure Mode Identifier, choose the FMI table which you created before. After that, when moving to your DTC list, the FMI column is displayed. Note: The same steps are to be applied for the 1 byte long FTB. Copy Permalink Helpful? Yes No _ Featured Articles Software ...
If this test is to check the CPU, the DTC may read “internal failure,” and the diagnostic trouble tree would instruct you to replace the control unit. What needs to be understood here is that the instructions did not account for someone putting in an extra fuse or relay in a spare ...
The cbLength field of the DTCLU_VARLEN_BYTEARRAY structure (contained in the OurLogName field) MUST be set to the number of bytes in the Local Log Name field of the LU Pair object referenced by the connection. The first cbLength bytes of the rgbBlob field of the DTCLU_VARLEN_BYTEARRA...
LowByte表示故障类型,包含了DTC故障类别和DTC故障子类型,它代表了电路或系统中的故障类型(比如传感器开路,传感器对地短路等),具体可参考ISO15031-6 ISO15031-6 其中DTC故障类别的定义如下: ISO15031-6 当故障类型为一般故障信息(General failure information)时,DTC故障子类型有如下多种: ...