CHAPTER 2: VEHICLE MAINTENANCE INSTRUCTIONS
TM 9-2350-256-20
2-19 ELECTRICAL TROUBLESHOOTING-Continued
ENGINE OIL PRESSURE GAGE-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.
F
Reconnect bulkhead to engine bracket and rear fuel
tank wiring harness to bulkhead. Remove engine deck
(see paragraph 9-51). Disconnect bulkhead to engine
bracket and rear fuel tank wiring harness to engine
disconnect. Place red lead of multimeter in socket F of
wire 36 and black lead to ground. Turn MASTER
switch on and check for voltage. Turn MASTER switch
OFF. If voltage is present, go to step G. If voltage is
not present, repair/replace wire 36 of bulkhead to
engine bracket and rear fuel tank transmitter wiring
harness (see paragraph 6-73 for dual voltage; 6-74 for
single voltage).
G
Reconnect bulkhead to engine bracket and rear fuel
tank transmitter wiring harness to engine disconnect.
Remove powerplant (see paragraph 3-1). Disconnect
wire 36 from engine oil pressure sending unit. Place
red lead of multimeter in wire 36 and black lead to
ground. Turn MASTER switch on and check for
voltage. Turn MASTER switch OFF. If voltage is
present, replace engine oil pressure sending unit (see
paragraph
6-22).
If
voltage
is
not
present,
repair/replace wire 36 of engine wiring harness (see
paragraph 6-58 for dual voltage; 6-59 for single
voltage).
2-108