TM 5-3805-281-24-1
Sub-System Diagnostics
ALTERNATOR VOLTAGE
Turn key switch ON.
YES: Go to next step.
INDICATOR LIGHT (H18)
CHECK
Engine OFF.
NO: Check indicator
lamp. If OK go to next
Is alternator voltage indicator light ON?
check.
T6768CR
UN18OCT88
Start engine.
YES: Indicator light is
OK.
Does alternator voltage indicator light go OFF?
NO: Go to next check1/1
.
ALTERNATOR VOLTAGE
YES: Monitor controller
INDICATOR LIGHT
may have failed.
9015
HARNESS CHECK
15
NO: Harness has failed.
56
Repair.
T118386 UN21NOV98
Turn key switch OFF.
Disconnect 20-pin harness connector from monitor controller and display.
Check wire from alternator terminal D+ to pin 42 of 20-pin harness connector for
continuity and for short to ground.
Is continuity measured and no short found?
1/1
4-124