CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS
TM 9-2350-256-20
2-19 ELECTRICAL TROUBLESHOOTING-Continued
MASTER WARNING LIGHT--Continued
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.
Q Remove powerplant and groundhop (see paragraphs
3-1 and 3-2). Disconnect wire 509 from engine high oil
temperature switch. Place red lead of multimeter in wire
509 and black lead to ground. Turn MASTER switch on,
start engine, and check for voltage. Turn engine and
MASTER switch OFF. If voltage is present, replace
engine high oil temp switch. If voltage is not present,
repair/replace wire 509 of engine wiring harness from
engine high oil temperature switch to engine disconnect
(see paragraph 6-58 for dual voltage; 6-59 for single
voltage).
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