Volvo VNL 780 Operator's Manual page 349

The engine shut-down system will automatically derate or stop the engine when one or more
of the systems listed below reaches a critical stage:
•
High Coolant Temperature
•
Low Oil Pressure
•
Low Coolant Level
•
High Crankcase Pressure
•
High Diesel Particulate Filter Soot Level
Derate and shut-down functions may be applied differently, or added to, depending on the
engine manufacturer. See the engine operator's manual for more information.
When the shut-down is activated, the tell-tales come on and the buzzer is also activated.
From that time it will take 30 seconds before the engine shuts down. In this time period, find
a safe place to pull off of the road.
After the engine has been shut down by the system, the override will allow a restart of the
engine for 30 seconds. This is so the vehicle may be pulled off the road, if necessary. The
alarm will remain activated until repairs have been made to correct the problem.
The operator should not continually override the system as this can cause serious damage to
the vehicle's engine.
OPERATION 339