TM 5-5420-226-20-1
(
—
Symptom-27
DETAILED
TROUBLESHOOTING
PROCEDURE
T
VEHICLE
OPERATION
- HULL POWER
(Continued)
Check for electrical power at output of MASTER
RELAY (CKT 81-5).
Second Technician
(Operator’s
Station)
l Set MASTER BATTERY switch OFF.
First Technician
(Commander’s
Station)
l Remove floor access cover (page 17-9).
l Disconnect hull power harness connector (CKT 81-5)
from master relay.
l Set multimeter to measure 18 to 30 volts dc, or use STE/
ICE Test No. 89 (page 4-81 ).
l Connect red probe of meter to center contact of master
relay connector (CKT 81-5) and black probe to ground.
Second Technician
(Operator’s
Station)
l Set MASTER BATTERY switch ON.
First Technician
(Commander’s
Station)
l Check if meter indicates 18 to 30 volts dc.
Does meter indicate 18 to 30 volts dc?
9
o-
n
n
0
/
TO VEHICLE
GROUND
\
/!)
,ix.z~+=–=
‘-y--+
l Check hull power harness
(CKT 10) at basket disconnect
for electrical power.
l See Step 17
r
.
TA107O62
4-373
.
