SECTlON V: TROUBLESHOOTING
TM 9-2350-256-20
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.
A Remove powerplant and groundhop (see
paragraphs 3-1 and 3-2). Disconnect engine wiring
harness connector from control module. Place red
lead of multimeter in socket A of wire K and black
lead to ground. Turn MASTER switch on and check
for voltage. Turn MASTER switch OFF. If voltage
is present, go to step B. If voltage is not present, go
to step E.
B Place red lead of multimeter in socket B and black
lead to ground. If continuity is present, go to step C.
If continuity is not present, repair/replace GND
wire of engine wiring harness (see paragraph 6-58
for dual voltage; 6-59 for single voltage).
C Reconnect engine wiring harness connector to control
module. Disconnect fuel/water separator control
module to solenoid drain valve wiring harness from
control module. Place red lead of multimeter on pin
A of control module and black lead to ground. Turn
MASTER switch on and check for voltage. Turn
MASTER switch OFF. If voltage is present, go to
step D. If voltage is not present, replace fuel/water
separator control module (see paragraph 4-17).
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