TM 9-2350-256-20-1
0065 00
Troubleshooting Procedure
Master Warning Light
Symptom
Master warning light malfunctioning.
Malfunction
Master warning light fails to operate with engine off. Do steps 1 thru 12.
Master warning light does not go out after starting engine. Do step 8 thru 12.
Master warning light does not light with high transmission oil temp, but lights with engine off. Do step 16.
Master warning light does not light with high engine oil temp, but lights with engine off. Do step 17.
CORRECTIVE ACTION
WARNING
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry contacts a metal surface a direct
short may result in instant heating of tools, damage to equipment, and injury or death to personnel.
1.
Remove three screws (1), three lockwashers (2), two screws (3), two lockwashers (4), and ground strap
(5) and release gage panel (6) from mounting bracket. Disconnect connector from master warning
light. Place red lead of multimeter in wire 27G and black lead to ground. Turn MASTER switch on,
and check for voltage. Turn MASTER switch OFF. If voltage is present, go to step 9. If voltage is not
present, go to step 2.
0065 00-3
