PREVOST X3-45 COMMUTER User Manual

SECTION 06: ELECTRICAL
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 06 revised release October 2021
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2. Defects in the charging system, such as
high wiring resistance, faulty alternator,
regulator or battery equalizer.
3. A vehicle electrical load exceeding the
alternator (or battery equalizer) capacity,
with the addition of electrical devices, such
as CB radio equipment, a cellular phone or
additional lighting systems.
4. Defects in the electrical system, such as
shorted or pinched wires.
5. Extended driving at a slow speed while
using many accessories.
6. Loose or poor battery cable-to-post
connections, previous improper charging of
a run-down battery, or loose hold-down
clamp bolts.
7. High-resistance connections or defects in
the cranking system.
9.15 "BATTERY VOLTAGE WARNING”
PICTOGRAM
If the “BATTERY VOLTAGE WARNING"
(Low Voltage – Connect Battery Charger)
pictogram shows up in the DID (Driver
Information Display), check the voltmeter gauge
to determine if the battery voltage is too high or
too low.
9.15.1 Voltage Gauge Definitions
Voltmeter drops below 24.4 volts dc
o Check alternator output.
o Check battery connections.
o Check battery equalizer connections.
Voltmeter exceeds 30 volts dc
o Check alternator output (voltage regulator
might be defective).
o Check battery connections.
Checking Battery Balance
NOTE
Allow at least 15 minutes to balance batteries
after any corrective measure has been taken.
1. Batteries out of balance (difference greater
than 1.5 volts between the two battery
banks).
o Check battery equalizer connections.
o Check equalizer cables for proper gauge.
o Check battery connections.
2. Demand for 12-volt power exceeding rated
amperage output of battery equalizers
causing batteries to go out of balance.
o Reduce 12-volt load or install additional
battery equalizer(s).
9.15.2 BATTERY warning Pictogram MAY
appear as a reminder
If you leave ignition ON, park brake set and
engine not running, this warning
may
appear after 20 minutes as a reminder to
connect the battery charger. The reminder will
appear even if the batteries are in the right
voltage range.
Confirm battery voltage is indeed correct with
the DID Gauges screen and if you do need to
leave the ignition ON for a prolonged period,
connect a battery charger.
10. BATTERY EQUALIZER
The Vanner “Vann-Bus 80 Series” 100amp
Battery equalizer with Power Management
System is installed inside the main power
compartment.
Refer to Vanner Vann-Guard 80 Series
Owner's Manual found on your Technical
Publications USB flash drive.
11. SUPERCAPACITOR STARTING MODULE
The vehicle may be equipped with a
supercapacitor starting module located in the
3rd luggage bay. (Figure 48)

PREVOST X3-45 COMMUTER Specifications

General

Engine	Volvo D13
Transmission	Allison B500
Fuel Type	Diesel
Length	45 ft (13.7 m)
Width	102 in (2.6 m)
Horsepower	500 hp
GVWR	54, 000 lbs
Height	141 in