PREVOST X3-45 COMMUTER User Manual

SECTION 06: ELECTRICAL
26
DOB 1300-1556 | X3-45 Commuter PA-1648 Maintenance Manual Section 06 revised release October 2021
4.3 ALTERNATOR TEST
Anytime an alternator is suspected of being
defective, this test will help you when performing
your own alternator power output test, without
the need to disconnect the alternator power
cable. A clamp-on current meter is required.
To initiate the test, use the Driver Information
Display (DID) DIAGNOSTICS menu. Select
VEHICLE TESTS submenu and then FORCE
ALTERNATORS TEST. Press ENTER button to
start the test. This feature will activate one
alternator at a time during 5 seconds, cycling
between alternator 1, 2 & 3.
Alt-1 (5 sec.)
Alt-2 (5 sec.)
Alt-3 (5 sec.)
To exit test, press ESCAPE button, select
TERMINATE TESTS & FORCED STATES
submenu and then press ENTER button twice.
4.4 FORCED ACTIVATION OF THE
COOLING FANS
To allow the technicians to visually check if all
the cooling fans are in working conditions or to
prevent the engine from overheating in case of
malfunction of the cooling fans activation
system, it is possible to force activation of the
CAC & radiator fans.
Prerequisite condition: The engine is running
(fast idle if at stand still).
1. On the Driver Information Display, select
DIAGNOSTICS menu. Select VEHICLE
TESTS submenu and then FORCE
RADIATOR FAN SPEED 50% or FORCE
RADIATOR FAN SPEED100% as required.
2. The DID status line will show TEST to
confirm the forced activation of the radiator
fan clutch. To cancel, turn the ignition
switch to the OFF position or press
ESCAPE button, select TERMINATE
TESTS & FORCED STATES submenu and
then press ENTER button twice. TEST will
disappear from the DID status line.
WARNING
Keep hands away from the cooling fans as
they may start running at any moment.
4.4.1 Cooling Fans Cleaning Mode Validation
In order to make sure the cleaning mode is
working, the following steps should be taken:
1. From the instrument panel DID, look for any
fault codes related to cooling fans in the
ELECTRICAL section.
Select: Diagnostics > View Active Faults >
Electrical

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