Instruments and Programming
4-17
4
P/N 6525032M1 - X6
Validation phase of the AdBlue™ or DEF system
The validation phase is provided for technical problems and of poor quality of AdBlue™ or DEF fluid with heavy or very
heavy limitations. When the error level becomes "heavy" or "very heavy", the system enters the validation phase. In this
phase, and until it is stopped, the engine keeps on running on reduced power and torque curves, as previously described.
After starting the engine, the validation phase detects any faults in the system.
If it should detect a fault, the system goes into an emergency phase, that only allows a programmed number of starts,
namely 3. If after 30 minutes running the problem is not solved, the system begins applying the reduced power and
torque curves, eventually entering the next phase of emergency start.
After 3 consecutive starts (even shorter than 30 minutes), if the problem is still unsolved the system goes into the emer-
gency start phase anyhow.
Emergency starting
The system goes into the emergency start phase in two cases:
– When during the previous session a class 1 error (e.g. liquid level) was detected and the system has undergone a
Very heavy limitation. In this case the system turns the engine off after 30 seconds until the problem is solved. If the
problem is solved, the engine is turned off after 30 seconds in every case. At the next start the engine will return to
normal operation.
– When during the previous session the system entered the validation phase and performed 3 starts in the presence
of class 3 errors or poor quality fluid, without solving the problems. In this case the system is unable to eliminate the
error signal and the engine stop after 30 seconds. Therefore it will remain in this state even after solving the problem.
Only authorised technical personnel of your Argo Tractors Dealer are able to remove the error signals.
WARNING: There are no limits to the number of starts. The only limit consists in the engine stopping after 30
seconds.
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