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TM 9-4120-389-14
4-47. ELECTRICAL CONNECTOR (J1) HITH LEADS
Preliminary procedure: Remove junction box. (See para. 4-46).
WARNING
Voltages used can kill. Always disconnect power cord to air
conditioner before performing any internal maintenance.
Shutting unit off at its control module does not disconnect unit
power.
a.
Inspection (Installed)
(1)
Conduct continuity check on pins A, B, and C to ground (connector shell). Infinity reading on
all tests must be shown. Any reading other than infinity means the connector is shorted and must be replaced.
(2)
Check connector for general condition and loose, broken or missing contacts. Replace if
damaged.
(3)
Check individual wires for loose solder connections, loose terminal lug connections, cut or
frayed insulation, and cut or broken wires. Replace and repair as needed (See para. 4-36).
(4)
Check designation plate for readability. Replace if damaged.
(5)
Check cover for damage. Replace if defective.
4-145
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