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TM 10-3930-673-20-1
VOLTAGE CHECK
(1) Set multimeter to volts dc.
(2) Connect multimeter positive lead (+) to
wire 35 where wire 35 connects to
washer switch.
(3) Connect multimeter negative lead () to
known good ground.
(4) Connect negative battery cable to
negative side of battery (Para 8-44).
(5) Turn engine start switch to ON position,
BUT DO NOT START ENGINE
(TM 10-3930-673-10).
(6) Depress washer switch
(TM 10-3930-673-10).
(a) If 24 vdc is present, go to Step 3 of
this fault.
(b) If 24 vdc is not present, replace
washer switch (Para 8-7).
(7) Turn engine start switch to OFF
position (TM 10-3930-673-10).
(8) Disconnect negative battery cable
(Para 8-44).
VOLTAGE CHECK
(1) Set multimeter to volts dc.
(2) Connect multimeter positive lead (+) to
wire 35 where wire 35 connects to
resistor assembly.
(3) Connect multimeter negative lead () to
known good ground.
(4) Connect negative battery cable to
negative side of battery (Para 8-44).
(5) Turn engine start switch to ON position,
BUT DO NOT START ENGINE
(TM 10-3930-673-10).
(6) Depress washer switch
(TM 10-3930-673-10).
(a) If 24 vdc is present, go to Step 4 of
this fault.
(b) If 24 vdc is not present, repair
wire 35.
(7) Turn engine start switch to OFF
position (TM 10-3930-673-10).
(8) Disconnect negative battery cable
(Para 8-44).
TR01106
2-439
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