M2/M3 BFV ENGINE STARTING/CHARGING SYS - OD1603 - LESSON 1/TASK 1
charged, the vehicle charging system is used to restore to the battery the electric
current used for starting the engine.
The charging system is described in the
(3) The function of the charging system is to restore to the battery the
electrical power used by the starter to crank the engine and to keep the battery in
a charged condition.
In addition, the charging system provides the power to
operate the electrical components, such as headlights and windshield wipers. The
an alternator, a voltage regulator, and the electrical wiring that connects these
components to each other and to the starting system.
(4) The material discussed thus far served to familiarize the student with the
components and functions of the starting and charging systems.
paragraphs describe the troubleshooting, fault isolating, and correction of
malfunctions occurring in these two systems.
Troubleshooting is a series of steps used to diagnose and
detect defects that cause a vehicle system or component to malfunction.
steps consist of actually checking the performance of components of a system.
Depending on the type check to be performed, these checks are performed with
various items of test equipment, such as a multimeter. The test equipment used to
troubleshoot and isolate faults in the starting/charging system of the BFV is
listed in paragraph 2 on page 2.
When the malfunction is isolated, the next
procedure is to correct the defect. Correcting the malfunction involves adjusting,
repairing, or replacing the defective component.
After correcting the fault, the
system should be checked again to ensure that it works correctly.
a defective part or
component that is causing a malfunction of a system.
are two methods of
isolating a fault.
One method requires the performance of an
inspection and the
other the performance of certain troubleshooting procedures.
using the senses of sight,