TM 5-3805-280-24-1
Sub-System Diagnostics
ALTERNATOR VOLTAGE
B+--Alternator Output
YES: Go to next step.
INDICATOR LIGHT (H18)
D+--Alternator Excitation
CHECK
NO: Go to next check.
Turn key switch ON.
Engine OFF.
Is alternator voltage indicator light on?
T8322AC
UN10OCT94
Start engine.
YES: Alternator voltage
indicator light and
harness are OK.
Does alternator voltage indicator light go off.
NO: Check alternator
harness for short circuit
between alternator and
monitor controller. Also
9015
check alternator output.
15
T6768CR
UN18OCT88
12
1/1
ALTERNATOR VOLTAGE
YES: Check indicator
INDICATOR LIGHT
lamp.
HARNESS CHECK
NO: Harness has failed.
Repair.
T118386 UN21NOV98
Key switch OFF.
Disconnect 20-pin harness connector from monitor controller and display.
Measure continuity from alternator terminal D+ to pin 42 in harness side of 20-pin
monitor controller and display connector.
Is continuity measured?
1/1
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