Paccar PX-9, Operator'S Manual

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CAUTION
The installation of electronic devices to
the On Board Diagnostics (OBD) con-
nector, the vehicle Controller Area Net-
work (CAN), or their associated wiring
is not permitted. Doing so can ad-
versely affect vehicle performance
and/or cause fault codes to be record-
ed. The OBD connector is provided for
temporary connection of service tools
and for diagnostic purposes only.
Stop Engine Lamp
1
2
The stop engine warning lamp will
illuminate, and an audible tone will sound,
when a major engine problem exists. Your
vehicle will be equipped with one of the
indicators above, 1 or 2, depending on the
engine model.
WARNING
If the Stop Engine warning lamp illumi-
nates, it means you have a serious en-
gine system problem. This should be
considered an emergency. You should
stop the vehicle as safely as possible
and turn OFF the ignition. The vehicle
must be serviced and the problem cor-
rected before driving again. Failure to
comply may result in death, personal
injury, equipment or property damage.
For engines with the engine-protection
shutdown feature enabled, the stop engine
lamp will begin to flash 30 seconds before
the engine automatically shuts down. The
warning lamp alerts the operator to the
impending shutdown.
The lamp will also illuminate when the DEF
tank is almost empty or the soot level in the
DPF is at full capacity. At this level
warning, regeneration cannot be performed
and engine power will be derated.
Engine may automatically shut down if the
check engine lamp and stop engine lamp
are illuminated and the operator does not
correct the condition.
Engine, Check Engine
Or
Illuminates when a non emissions related
problem exists, but the vehicle can still be
safely driven. Vehicle should be serviced to
correct the problem but the situation should
not be considered an emergency.
Malfunction Indicator Light (MIL)
This warning light turns on when an engine
emissions failure occurs. An emissions
failure is not an emergency, and the
vehicle can be safely driven, but should be
serviced to correct the problem. In some
cases, the MIL will activate in conjunction
with the High Exhaust System Temperature
ENGINE OPERATION - Operating Instructions
14 Y53-1185-1J1 (10/21)
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