A53 Z0 9 0020 L En Technical documentation
5/ J1939 Alarm/Message
The GENSYS 2.0 is able to monitor diagnostic messages (DM1) from the J1939 engine ECU. Only relevant
diagnostic messages are taken into account and used in the GENSYS 2.0 fault/alarm system. GENSYS 2.0 is
able to understand and interpret messages for display, process, and protection.
RESET message (DM3) is sent to the engine when internal GENSYS 2.0 RESET is activated ([RESET] button or
internal variable).
If the diagnostic message is not sent by the J1939 ECU for more than 3 seconds, the corresponding
fault/alarm is automatically reset to OFF.
Each of the following J1939 messages/alarms can be configured to serve one of GENSYS 2.0 protections
(see §12 for more details on protections).
J1939Alarm/Message
(0 : / 1 : active)
Alarm/Message description
(1)
The engine speed is above the least severe
high level threshold set.
The engine speed is above the most severe
high level threshold set.
High water temperature
[E0343]
The coolant temperature is above the least
severe high level threshold set/
Very high water temperature
[E0356]
The coolant temperature is above the most
severe high level threshold set.
The oil pressure is below the least severe
low level threshold set.
Very low oil pressure
[E0355]
The oil pressure is below the most severe
low level threshold set.
Malfunction « lamp »
[E0359]
Message used when there is an emission-
related trouble code active.
Protection « lamp »
[E0363]
Message used to relay trouble code
information that is reporting a problem
with an engine system that is most
probably not electronic subsystem related.
For instance, engine coolant temperature is
exceeding its prescribed temperature
range.
Message used to relay trouble code
information that is reporting a problem
with the engine system where the engine
need not be immediately stopped.
Message used to relay trouble code
information that is of a severe enough
condition that it warrants stopping the
engine.
Table 67 - J1939: Alarms/faults list
(1) All thresholds are those set in the ECU.
Note: When the J1939 engine has been selected, all control parameters are settable in the
« Configuration/Engine/J1939-MDEC » menu.