iCarsoft HD V3.0, Руководство пользователя

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Heavy Duty & OBDII Diagnostic Tool HD V3.0
4
ECU has failed.

Failure Mode Indicator (FMI)
– Indicates in what way the function
failed.

Occurrence (OC)
– Indicates the occurrence times of fault codes.
2 .3 J1708/J1587/J1939
SAE J1708, SAE J1587 and SAE J1939 are automotive diagnostic
protocol standard developed by the Society of Automotive Engineers (SAE).
SAE J1708
SAE J1708 is a standard used for serial communications between ECUs
on a heavy duty vehicle and also between a computer and the vehicle. With
respect to Open System Interconnection model (OSI), J1708 defines the
physical layer. Common higher layer protocols that operate on top of J1708
are SAE J1587 and SAE J1922.
SAE J1587
SAE J1587 is an automotive diagnostic protocol standard developed by
the Society of Automotive Engineers (SAE) for heavy-duty and most
medium
– duty vehicles built after 1985. The J1587 protocol uses different
diagnostic connectors. Up to 1995, individual OEMs used their own
connectors. From 1996 to 2001, the 6-pin Deutsch-connector was standard.
Beginning in 2001, most OEMs converted to the 9-pin Deutsch. Some OEMs
still use the 6-pin Deutsch. It has mostly been used for US made vehicles,
and also by Volvo. SAE J1708 makes up the physical and data link layers
while SAE J1587 makes up the transport and application layers with respect
to the OSI model.
SAE J1587 is used in conjunction with SAE J1708 for
automobile communication.
SAEJ1939
SAE J1939 is the vehicle bus standard used for communication and
diagnostics among vehicle components, originally by the car and heavy duty
truck industry in the United States.
SAE J1939 is used in the commercial vehicle area for communication
throughout the vehicle. With a different physical layer it is used between the
tractor and trailer. This is specified in ISO 11992.