TM 5-3800-205-23-1
TESTS, INSPECTIONS, AND ADJUSTMENTS - CONTINUED
0005 00
TROUBLESHOOTING USING MULTIMETER - CONTINUED
4.
Alternator Circuit Breaker Voltage Test.
NOTE
Tachometer will indicate zero for this test.
This test measures a voltage drop of either polarity across alternator circuit breaker.
a.
Ensure engine is OFF.
b.
Place battery disconnect switch in ON position.
c.
Turn all accessories OFF.
d.
Remove protective cap from test connector receptacle.
e.
Select VDC on multimeter.
f.
Connect positive (red) lead from multimeter to test connector pin 1.
g.
Connect negative (black) lead from multimeter to test connector pin 9.
NOTE
A thirty (30) minute cool down time may be required before circuit breaker can be reset.
h.
Observe multimeter for an indication of more than 0.45 volts. If indication is more than 0.45 volts, problem could
be:
(1)
A tripped circuit breaker. If circuit breaker is tripped, reset circuit breaker and retest.
(2)
A closed circuit breaker with excessive voltage drop. Replace circuit breaker (WP 0038 00).
i.
Remove test leads from test connector.
j.
Install test connector protective cap.
5.
Key Start Switch Circuit Breaker Voltage Test.
NOTE
Tachometer will indicate zero for this test.
This test measures voltage drop across key start switch circuit breaker.
a.
Ensure engine is OFF.
b.
Place battery disconnect switch in ON position.
c.
Turn all accessories OFF.
d.
Remove wire from upper terminal (GND Negative) on engine fuel shutoff solenoid.
e.
Remove protective cap from test connector receptacle.
f.
Select VDC on multimeter.
g.
Connect positive (red) lead from multimeter to test connector pin 1.
h.
Connect negative (black) lead from multimeter to test connector pin 5.
0005 00-4
