TM 9-2320-272-10
Change 2
1-49
1-19. ELECTRICAL SYSTEMS OPERATION (Contd)
b. Starting System Operation.
The starting system is identical for all models covered in this manual and
consists of the following major components and circuitry:
H
BATTERY SWITCH
– Completes circuit 459, closing a relay in the
protective control box to supply power to the ignition switch through circuits
5 and 5B.
I
PROTECTIVE CONTROL BOX
– Locks out starter circuit, which prevents
starter from reengaging while engine is running.
J
IGNITION SWITCH
– Provides battery power through circuit 54 and
antilock brake system (ABS) to the fuel solenoid and through circuit 498 to
the neutral start safety switch.
L
STARTER SOLENOID
– A magnetic relay that is powered by circuit 74 to
transmit 24-volt battery power to the starter motor through circuit 6.
M
NEUTRAL START SAFETY SWITCH
– Prevents starter from energizing
when vehicle is not in neutral, by deenergizing circuit 499 and a relay in the
protective control box, which disconnects power from circuit 74 and the
starter solenoid.
N
STARTER MOTOR
– Cranks the engine for starting. Supplied with 24-volt
battery power through circuit 6.
K
(ABS) WARNING LAMP
– Intended to give the operator visual signal that
the antilock brake system has a malfunction if warning lamp is lit for more
then three seconds after ignition switch is place in ON position.