TM 9-6115-647-14&P
c.
P12, J11 Wiring Harness Testing. (See figure 4-3.) Wiring harness P12, J11 runs between P41
and J41 on the generator set control system and circuit breaker and TB2 on the adapter plate
assembly.
(1)
Set multimeter controls for continuity testing.
(2)
Disconnect connectors P12 and J11 from generator set.
(3)
Check each wire in harness by touching one multimeter test probe to each contact on
connector J1 1 or P12 and touching second probe to its associated contact on opposite
connector or on TB2, as applicable. Refer to figure 4-3 for the correct origin and destination of
each wire.
(4)
If multimeter does not indicate continuity for each wire in harness, replace wiring harness or
notify higher level of maintenance for repair.
(5)
If replacement is required, disconnect wires from terminal board TB2 on adapter plate
assembly Refer to figure 4-3 when installing repaired or replacement wiring harness.
d.
P4, P7 Low Fuel Cable Testing. (See figure 4-3) Low fuel cable P4, P7 runs from connector J4
on the adapter plate assembly to fuel level sensor J7 on the fuel tank.
(1)
Set multimeter controls for continuity testing.
(2)
Disconnect cable from adapter plate assembly and fuel tank.
(3)
Touch one multimeter test probe to connector P4 contact A and touch remaining probe to
connector P7. contact A Multimeter must indicate continuity If it doesn't, there is an open in
one or both connectors or in wire.
(4)
With first probe still touching connector P4 contact A, touch second probe to P7 contacts B, C,
and D In each of these positions, multimeter should not indicate continuity If it does, cable is
shorted.
(5)
Test for continuity between P4 on contact A and P4 connector housing, and between P7
contact A and P7. connector housing Multimeter should indicate no continuity in either of
these positions.
(6)
Repeat steps (3) through (5) for wire between P4 contact C and P7 contact C.
(7)
If an open or short is detected in cable, replace cable or notify higher level of maintenance for
repair.
Change 1
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