freightliner BUSINESS CLASS M2, Руководство пользователя

Страница: 16 / 86

Voltmeter
The voltmeter indicates the vehicle charging system
voltage when the engine is running and the battery
voltage when the engine is off. By monitoring the
voltmeter, the driver can stay aware of potential bat-
tery charging problems and have them fixed before
the batteries discharge enough to create starting diffi-
culties. Cascadia vehicles are equipped with either a
voltmeter gauge, or a digital voltmeter readout lo-
cated on the bottom line of the dash message center.
The voltmeter will normally show approximately 13.7
to 14.1 volts when the engine is running. The voltage
of a fully charged battery is 12.7 to 12.8 volts when
the engine is off. Battery voltage under 12.0 volts is
considered a low battery, and a completely dis-
charged battery will produce only about 11.0 volts.
If the voltmeter shows an undercharged or over-
charged condition for an extended period, have the
charging system and batteries checked at an autho-
rized Freightliner service facility.
On a vehicle equipped with a battery isolator system,
the voltmeter measures the average voltage of all the
batteries when the engine is running. When the en-
gine is off, the voltmeter shows only the isolated bat-
tery voltage and does not indicate the voltage of the
engine-starting batteries.
Overhead Instrument Panel
The optional overhead instrument panel, shown in
Fig. 3.16 , may hold a citizen’s band (C/B) radio, a
microphone clip, and any switches that can not be
accommodated on the driver’s or auxiliary dash
panels.
The underside of the overhead console also holds
the sun visors and the optional dome/reading light
assembly. For more information on the dome/reading
light assembly, see
Chapter 4 .
Instruments
3.14