TM 9-6115-647-14&P
4-17.
Adapter Plate Assembly Testing . Continuity testing is used to detect faults in the wiring harnesses,
surge protectors, and cables associated with the adapter plate assembly. When performing continuity tests,
refer to the wiring diagram, figure 4-3, for harness and cable routing information.
a.
J3 Wining Harness Testing. (See figure 4-3.). Wiring harness J3 runs from connector P3 on the
adapter plate assembly to the generator set load terminals and to terminal board TB2 on the adapter
plate assembly.
(1)
Set multimeter for continuity testing.
(2)
Disconnect P3 cable connector from J3 connector.
(3)
Touch one multimeter test probe to connector J3 contact A and touch remaining test probe to
load terminal LI on the generator set. Multimeter must indicate continuity. If it doesn't, there is
an open in connector or associated wire.
(4)
Repeat step (3) for each remaining wire in wiring harness. Refer to figure 4-3 for correct
ongoing and destination of each wire.
(5)
Disconnect the wire from L1. Touch one multimeter test probe to connector J3 contact A and
touch the remaining test probe to J3 contact E. Multimeter must indicate resistance of infinity
If it doesn't there is a short in the surge protector.
(6)
Disconnect the wire from L2. Touch one multimeter test probe to connector J3 contact C and
touch the remaining test probe to J3 contact E. Multimeter must indicate resistance of infinity.
If it doesn't, there is a short in the surge protector.
(7)
Disconnect the wire from L3. Touch one multimeter test probe to connector J3 contact G and
touch the remaining test probe to J3 contact E. Multimeter must indicate resistance of infinity.
If it doesn't, there is a short in the surge protector.
(8)
If an open is detected in wiring harness, or a short is detected in a surge protector, replace the
adapter plate assembly (paragraph 4-18) or notify higher level of maintenance for repair.
b.
J4 Wining Harness Testing. (See figure 4-3.). Wiring harness J4 runs from connector P4 on the
adapter plate assembly to terminal board TB2.
(1)
Set multimeter controls for continuity testing.
(2)
Disconnect P4 cable connector from J4 connector.
(3)
Touch one multimeter test probe to connector J4 contact A and touch remaining probe to TB2
terminal 2. Multimeter must indicate continuity If it doesn't there is an open in connector or
associated wire.
(4)
Touch one multimeter test probe to connector J4 contact C and touch second probe to TB2
terminal 5. Multimeter must indicate continuity If it doesn't there is an open in connector or
wire.
(5)
If an open is detected in wiring harness, replace adapter plate assembly (paragraph 4-18) or
notify higher level of maintenance for repair.
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