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Operation
Engine Features
HD-OBD Overview
The HD-OBD system uses many individual pre-programmed
monitors to ensure the vehicle is meeting emissions standards.
An HD-OBD monitor is a strategy to evaluate the performance
of an emissions related system or component.
All monitors
are designed for execution in a prescribed frequency; some
monitors run continuously, while some run a specific ratio
against the number of drive cycles.
The operator will be alerted to emissions or other system
problems when the Malfunction Indicator Lamp (MIL) illuminates.
When the MIL illuminates, bring the vehicle in for service at
the next available opportunity. The HD-OBD system does not
change the way the vehicle should be driven, the recommended
driving style, or the way you use the vehicle.
Self Diagnostics
All warning lamps are located on the instrument panel gauge
cluster. When the ignition switch is turned ON, the warning
lamps are illuminated and remain on while the ECM runs normal
start-up tests, then goes OFF. If a warning lamp stays on or
comes on while operating the vehicle, it is an indication that the
vehicle needs service. When the warning lamp is illuminated,
a Diagnostic Trouble Code (DTC) will be generated. Take the
vehicle to a service center as soon as possible as some optional
features and / or engine power may be lost while the indicator
is lit.
Fuel
NOTE: For specific fuel system information, refer to the
vehicle Engine Operation and Maintenance Manual.
This vehicle is equipped with a PSI 8.8L gasoline engine which
is fitted with a Electronic Fuel Injection (EFI) fuel system.
This system utilizes gasoline fuel injection to improve power,
efficiency, and operating characteristics.
The EFI system injects gasoline into each intake port. A typical
gasoline fuel system requires a rich mixture that is very dense
and dependent on ambient temperature.
The EFI system utilizes three main components: a fuel tank, the
fuel lines, and the fuel injectors. The vehicle comes equipped
with 60 or 100 gallon fuel tank that is located near the back of
the vehicle. The fuel lines run from the tank to the fuel rails that
are mounted on each side of the PSI 8.8L gasoline engine.
California Emission Standards
The PSI 8.8L gasoline engine is in compliance and certified
to meet California emission standards.
This engine is
manufactured to be compliant with all California specifications.
Refer to the Engine Operators Manual and / or the emission
control label under the hood of the vehicle.
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